feat: pika cdc for incremental synchronization (ospp 2024) #2855
Conversation
WalkthroughThe recent updates enhance the Pika CDC project by adding new configuration files, consumer implementations for Kafka and Redis, and a robust replication protocol for data synchronization. A structured approach to managing dependencies and build processes is established with the inclusion of Makefiles and module definitions. These changes streamline the development workflow and lay the groundwork for future features. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Main
participant Server
participant Consumer
User->>Main: Start Application
Main->>Server: Establish Connection
Server->>Main: Connection Established
Main->>Consumer: Generate Consumers
Consumer->>Main: Consumers Ready
Main->>Server: Run Server
Server->>Consumer: Send Data
Consumer->>Server: Acknowledge Data
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Actionable comments posted: 30
Outside diff range, codebase verification and nitpick comments (4)
tools/pika_cdc/consumer/redis.go (1)
26-29: Consider logging errors inSendCmdMessage.The
SendCmdMessagemethod returns an error if sending data fails. Consider logging the error to provide more context for debugging.func (r *Redis) SendCmdMessage(msg []byte) error { _, err := r.sendRedisData(msg) if err != nil { fmt.Printf("Error sending command message: %v\n", err) } return err }tools/pika_cdc/consumer/kafka.go (1)
71-83: Consider logging errors inclosemethod.The
closemethod logs errors usinglog.Println. Consider using a structured logger likelogrusfor consistency.if err != nil { logrus.Errorf("Error closing Kafka connection: %v", err) return err }tools/pika_cdc/pika/replprotocol_test.go (2)
33-44: Consider Removing Unused CodeThe
getPortandgetIPfunctions are commented out and not used. If they are not needed, consider removing them to maintain code cleanliness.
82-94: Implement or Remove receiveReplMsgThe
receiveReplMsgfunction listens for connections but does not process them. Consider implementing connection handling or removing the function if not needed.
Review details
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Files ignored due to path filters (1)
tools/pika_cdc/go.sumis excluded by!**/*.sum
Files selected for processing (20)
- .gitignore (1 hunks)
- src/pika_inner_message.proto (1 hunks)
- src/rsync_service.proto (1 hunks)
- third/blackwidow (1 hunks)
- third/glog (1 hunks)
- third/pink (1 hunks)
- tools/pika_cdc/Makefile (1 hunks)
- tools/pika_cdc/README.md (1 hunks)
- tools/pika_cdc/conf/cdc.yml (1 hunks)
- tools/pika_cdc/conf/conf.go (1 hunks)
- tools/pika_cdc/consumer/consumer.go (1 hunks)
- tools/pika_cdc/consumer/kafka.go (1 hunks)
- tools/pika_cdc/consumer/protocol.go (1 hunks)
- tools/pika_cdc/consumer/redis.go (1 hunks)
- tools/pika_cdc/go.mod (1 hunks)
- tools/pika_cdc/main.go (1 hunks)
- tools/pika_cdc/pika/cmd.go (1 hunks)
- tools/pika_cdc/pika/replprotocol.go (1 hunks)
- tools/pika_cdc/pika/replprotocol_test.go (1 hunks)
- tools/pika_cdc/pika/server.go (1 hunks)
Files skipped from review due to trivial changes (9)
- .gitignore
- src/pika_inner_message.proto
- src/rsync_service.proto
- third/blackwidow
- third/glog
- third/pink
- tools/pika_cdc/README.md
- tools/pika_cdc/go.mod
- tools/pika_cdc/pika/cmd.go
Additional comments not posted (11)
tools/pika_cdc/consumer/protocol.go (1)
12-16: Review KafkaProtocol'sToConsumermethod.The
KafkaProtocol'sToConsumermethod currently returnsnil. This might be a placeholder or an incomplete implementation. Ensure that this is the intended behavior or consider implementing the necessary logic to process the message.tools/pika_cdc/conf/cdc.yml (1)
12-15: Verify retry configuration parameters.Ensure that the
retriesandretry_intervalvalues are appropriate for your use case. These settings can significantly impact the system's behavior in case of failures.tools/pika_cdc/Makefile (1)
1-26: Makefile is well-structured.The Makefile is well-organized and correctly uses targets and variables to manage the build process. It follows best practices for compiling protocol buffers and Go binaries.
tools/pika_cdc/pika/replprotocol.go (7)
16-23: Struct Definition Looks Good!The
ReplProtocolstruct is well-defined and seems appropriate for managing replication protocol operations.
25-31: Struct Definition Looks Good!The
binlogSyncInfostruct is well-defined and seems appropriate for managing binlog synchronization information.
188-202: Function Implementation Looks Good!The
Pingfunction is well-implemented and handles errors appropriately.
204-217: Function Implementation Looks Good!The
sendMetaSyncRequestfunction is well-implemented and performs its task correctly.
269-274: Function Implementation Looks Good!The
buildInternalTagfunction is well-implemented and performs its task correctly.
276-285: Struct Definition Looks Good!The
binlogItemstruct is well-defined and seems appropriate for managing binlog data.
287-328: Function Implementation Looks Good!The
decodeBinlogItemfunction is well-implemented and handles errors appropriately.tools/pika_cdc/pika/replprotocol_test.go (1)
155-179: Improve Error Handling in sendMetaSyncRequestConsider improving error handling by returning errors instead of using
logrus.Fatal.- logrus.Fatal("Failed to sendMetaSyncRequest") + return nil, fmt.Errorf("failed to sendMetaSyncRequest")Apply similar changes to other
logrus.Fatalcalls within this function.Likely invalid or redundant comment.
tools/pika_cdc/main.go
Outdated
| if pikaServer, err := pika.New(conf.ConfigInstance.PikaServer, nil); err != nil { | ||
| logrus.Fatal("failed to connect pika server, {}", err) |
There was a problem hiding this comment.
Improve error logging.
The error message in logrus.Fatal should include the actual error message using %v instead of {} for better clarity.
- logrus.Fatal("failed to connect pika server, {}", err)
+ logrus.Fatalf("failed to connect pika server: %v", err)Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if pikaServer, err := pika.New(conf.ConfigInstance.PikaServer, nil); err != nil { | |
| logrus.Fatal("failed to connect pika server, {}", err) | |
| if pikaServer, err := pika.New(conf.ConfigInstance.PikaServer, nil); err != nil { | |
| logrus.Fatalf("failed to connect pika server: %v", err) |
tools/pika_cdc/main.go
Outdated
| if consumers, err := consumer.GenerateConsumers(conf.ConfigInstance, pikaServer.MsgChan); err != nil { | ||
| logrus.Fatal("failed to generate consumers, {}", err) |
There was a problem hiding this comment.
Improve error logging.
The error message in logrus.Fatal should include the actual error message using %v instead of {} for better clarity.
- logrus.Fatal("failed to generate consumers, {}", err)
+ logrus.Fatalf("failed to generate consumers: %v", err)Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if consumers, err := consumer.GenerateConsumers(conf.ConfigInstance, pikaServer.MsgChan); err != nil { | |
| logrus.Fatal("failed to generate consumers, {}", err) | |
| if consumers, err := consumer.GenerateConsumers(conf.ConfigInstance, pikaServer.MsgChan); err != nil { | |
| logrus.Fatalf("failed to generate consumers: %v", err) |
tools/pika_cdc/consumer/consumer.go
Outdated
| kafka, _ := NewKafka(config.KafkaServers, config.Topic, config.Retries) | ||
| consumers = append(consumers, kafka) |
There was a problem hiding this comment.
Handle errors when creating Kafka consumer.
Currently, the error from NewKafka is ignored. Consider handling this error to ensure robustness.
kafka, err := NewKafka(config.KafkaServers, config.Topic, config.Retries)
if err != nil {
return nil, fmt.Errorf("failed to create Kafka consumer: %v", err)
}
consumers = append(consumers, kafka)
tools/pika_cdc/consumer/consumer.go
Outdated
| for _, r := range config.RedisServers { | ||
| newRedis, _ := NewRedis(r, msgChan) | ||
| consumers = append(consumers, newRedis) |
There was a problem hiding this comment.
Handle errors when creating Redis consumer.
Currently, the error from NewRedis is ignored. Consider handling this error to ensure robustness.
newRedis, err := NewRedis(r, msgChan)
if err != nil {
return nil, fmt.Errorf("failed to create Redis consumer: %v", err)
}
consumers = append(consumers, newRedis)| filename = filepath.Join(filepath.Dir(filename), "cdc.yml") | ||
| file, err := ioutil.ReadFile(filename) | ||
| if err != nil { | ||
| log.Fatal("fail to read file:", err) |
There was a problem hiding this comment.
Improve error logging for file reading.
The error message should include the filename for better context.
- log.Fatal("fail to read file:", err)
+ log.Fatalf("fail to read file %s: %v", filename, err)Committable suggestion was skipped due to low confidence.
tools/pika_cdc/pika/server.go
Outdated
| // Run This method will block execution until an error occurs | ||
| func (s *Server) Run() { | ||
| for { | ||
| select { | ||
| case <-s.stop: | ||
| return | ||
| case <-time.After(100 * time.Millisecond): | ||
| bytes, _ := s.pikaReplProtocol.GetBinlogSync() | ||
| if len(bytes) != 0 { | ||
| logrus.Info("get a pika binlog send to msg chan") | ||
| *s.MsgChan <- bytes | ||
| } | ||
| } | ||
| } | ||
| } |
There was a problem hiding this comment.
Consider logging errors in Run method.
The Run method does not handle errors from GetBinlogSync. Consider logging these errors for better debugging.
bytes, err := s.pikaReplProtocol.GetBinlogSync()
if err != nil {
logrus.Errorf("Error getting binlog sync: %v", err)
continue
}
tools/pika_cdc/pika/server.go
Outdated
| func (s *Server) Exit() { | ||
| s.stop <- true | ||
| close(s.stop) | ||
| close(*s.MsgChan) | ||
| } |
There was a problem hiding this comment.
Ensure proper closure of channels in Exit method.
The Exit method closes the stop channel, which could cause a panic if Run is still selecting on it. Consider using a more controlled shutdown process.
select {
case s.stop <- true:
default:
}
tools/pika_cdc/pika/server.go
Outdated
| func (s *Server) CreateSyncWithPika() error { | ||
| //ping := s.pikaReplProtocol.Ping() | ||
| //logrus.Info(ping) | ||
| return s.pikaReplProtocol.GetSyncWithPika() | ||
| } |
There was a problem hiding this comment.
Ensure CreateSyncWithPika handles errors properly.
The CreateSyncWithPika method calls GetSyncWithPika but does not handle potential errors. Ensure errors are logged or handled appropriately.
if err := s.pikaReplProtocol.GetSyncWithPika(); err != nil {
logrus.Errorf("Error creating sync with Pika: %v", err)
return err
}
tools/pika_cdc/pika/replprotocol.go
Outdated
| func (repl *ReplProtocol) GetBinlogSync() ([]byte, error) { | ||
|
|
||
| binlogSyncType := inner.Type_kBinlogSync | ||
| var binlogByte []byte | ||
| // todo(leehao): Receive multiple binlog sync responses simultaneously | ||
| binlogSyncResp := repl.getResponse() | ||
| if binlogSyncResp == nil || *binlogSyncResp.Code != inner.StatusCode_kOk || | ||
| *binlogSyncResp.Type != inner.Type_kBinlogSync || binlogSyncResp.BinlogSync == nil { | ||
| logrus.Fatal("get binlog sync response failed") | ||
| } else { | ||
| for index, item := range binlogSyncResp.BinlogSync { | ||
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | ||
| binlogOffset := repl.binlogSyncInfos[index].binlogOffset | ||
| if len(item.Binlog) == 0 { | ||
| *binlogOffset.Filenum = 0 | ||
| *binlogOffset.Offset = 0 | ||
| logrus.Println("receive binlog response keep alive") | ||
| } else { | ||
| binlogOffset = item.BinlogOffset | ||
| repl.binlogSyncInfos[index].binlogOffset = binlogOffset | ||
| if binlogItem, err := repl.decodeBinlogItem(item.Binlog); err != nil { | ||
| logrus.Fatal(err) | ||
| } else { | ||
| binlogByte = binlogItem.Content | ||
| } | ||
| } | ||
| err := repl.sendReplReq(&inner.InnerRequest{ | ||
| Type: &binlogSyncType, | ||
| MetaSync: nil, | ||
| TrySync: nil, | ||
| DbSync: nil, | ||
| BinlogSync: &inner.InnerRequest_BinlogSync{ | ||
| Node: &inner.Node{ | ||
| Ip: &repl.ip, | ||
| Port: &repl.port, | ||
| }, | ||
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | ||
| SlotId: &slotId, | ||
| AckRangeStart: binlogOffset, | ||
| AckRangeEnd: binlogOffset, | ||
| SessionId: &repl.binlogSyncInfos[index].sessionId, | ||
| FirstSend: &repl.binlogSyncInfos[index].isFirst, | ||
| }, | ||
| RemoveSlaveNode: nil, | ||
| ConsensusMeta: nil, | ||
| }) | ||
| if err != nil { | ||
| logrus.Warn("Failed to send binlog sync, {}", err) | ||
| return nil, err | ||
| } | ||
| } | ||
| } | ||
| return binlogByte, nil |
There was a problem hiding this comment.
Improve Error Handling in GetBinlogSync
The use of logrus.Fatal for error handling will cause the application to exit abruptly. Consider returning errors or using a more graceful logging approach.
Additionally, consider addressing the TODO comment to handle multiple binlog sync responses simultaneously.
- logrus.Fatal("get binlog sync response failed")
+ return nil, fmt.Errorf("get binlog sync response failed")Apply similar changes to other logrus.Fatal calls within this function.
Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (repl *ReplProtocol) GetBinlogSync() ([]byte, error) { | |
| binlogSyncType := inner.Type_kBinlogSync | |
| var binlogByte []byte | |
| // todo(leehao): Receive multiple binlog sync responses simultaneously | |
| binlogSyncResp := repl.getResponse() | |
| if binlogSyncResp == nil || *binlogSyncResp.Code != inner.StatusCode_kOk || | |
| *binlogSyncResp.Type != inner.Type_kBinlogSync || binlogSyncResp.BinlogSync == nil { | |
| logrus.Fatal("get binlog sync response failed") | |
| } else { | |
| for index, item := range binlogSyncResp.BinlogSync { | |
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | |
| binlogOffset := repl.binlogSyncInfos[index].binlogOffset | |
| if len(item.Binlog) == 0 { | |
| *binlogOffset.Filenum = 0 | |
| *binlogOffset.Offset = 0 | |
| logrus.Println("receive binlog response keep alive") | |
| } else { | |
| binlogOffset = item.BinlogOffset | |
| repl.binlogSyncInfos[index].binlogOffset = binlogOffset | |
| if binlogItem, err := repl.decodeBinlogItem(item.Binlog); err != nil { | |
| logrus.Fatal(err) | |
| } else { | |
| binlogByte = binlogItem.Content | |
| } | |
| } | |
| err := repl.sendReplReq(&inner.InnerRequest{ | |
| Type: &binlogSyncType, | |
| MetaSync: nil, | |
| TrySync: nil, | |
| DbSync: nil, | |
| BinlogSync: &inner.InnerRequest_BinlogSync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | |
| SlotId: &slotId, | |
| AckRangeStart: binlogOffset, | |
| AckRangeEnd: binlogOffset, | |
| SessionId: &repl.binlogSyncInfos[index].sessionId, | |
| FirstSend: &repl.binlogSyncInfos[index].isFirst, | |
| }, | |
| RemoveSlaveNode: nil, | |
| ConsensusMeta: nil, | |
| }) | |
| if err != nil { | |
| logrus.Warn("Failed to send binlog sync, {}", err) | |
| return nil, err | |
| } | |
| } | |
| } | |
| return binlogByte, nil | |
| func (repl *ReplProtocol) GetBinlogSync() ([]byte, error) { | |
| binlogSyncType := inner.Type_kBinlogSync | |
| var binlogByte []byte | |
| // todo(leehao): Receive multiple binlog sync responses simultaneously | |
| binlogSyncResp := repl.getResponse() | |
| if binlogSyncResp == nil || *binlogSyncResp.Code != inner.StatusCode_kOk || | |
| *binlogSyncResp.Type != inner.Type_kBinlogSync || binlogSyncResp.BinlogSync == nil { | |
| return nil, fmt.Errorf("get binlog sync response failed") | |
| } else { | |
| for index, item := range binlogSyncResp.BinlogSync { | |
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | |
| binlogOffset := repl.binlogSyncInfos[index].binlogOffset | |
| if len(item.Binlog) == 0 { | |
| *binlogOffset.Filenum = 0 | |
| *binlogOffset.Offset = 0 | |
| logrus.Println("receive binlog response keep alive") | |
| } else { | |
| binlogOffset = item.BinlogOffset | |
| repl.binlogSyncInfos[index].binlogOffset = binlogOffset | |
| if binlogItem, err := repl.decodeBinlogItem(item.Binlog); err != nil { | |
| logrus.Fatal(err) | |
| } else { | |
| binlogByte = binlogItem.Content | |
| } | |
| } | |
| err := repl.sendReplReq(&inner.InnerRequest{ | |
| Type: &binlogSyncType, | |
| MetaSync: nil, | |
| TrySync: nil, | |
| DbSync: nil, | |
| BinlogSync: &inner.InnerRequest_BinlogSync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | |
| SlotId: &slotId, | |
| AckRangeStart: binlogOffset, | |
| AckRangeEnd: binlogOffset, | |
| SessionId: &repl.binlogSyncInfos[index].sessionId, | |
| FirstSend: &repl.binlogSyncInfos[index].isFirst, | |
| }, | |
| RemoveSlaveNode: nil, | |
| ConsensusMeta: nil, | |
| }) | |
| if err != nil { | |
| logrus.Warn("Failed to send binlog sync, {}", err) | |
| return nil, err | |
| } | |
| } | |
| } | |
| return binlogByte, nil |
tools/pika_cdc/pika/replprotocol.go
Outdated
| func (repl *ReplProtocol) GetSyncWithPika() error { | ||
| if err := repl.sendMetaSyncRequest(); err != nil { | ||
| return err | ||
| } | ||
| metaResp := repl.getResponse() | ||
| if metaResp == nil { | ||
| logrus.Fatal("Failed to get metaResp") | ||
| } | ||
| repl.dbMetaInfo = metaResp.MetaSync | ||
|
|
||
| trySyncType := inner.Type_kTrySync | ||
| binlogSyncType := inner.Type_kBinlogSync | ||
|
|
||
| replDBs := metaResp.MetaSync.DbsInfo | ||
| var a uint64 = 0 | ||
| var b uint32 = 0 | ||
| for _, dbInfo := range replDBs { | ||
| newMetaInfo := binlogSyncInfo{ | ||
| binlogOffset: &inner.BinlogOffset{ | ||
| Filenum: nil, | ||
| Offset: nil, | ||
| Term: nil, | ||
| Index: nil, | ||
| }, | ||
| fileNum: 0, | ||
| offset: 0, | ||
| sessionId: 0, | ||
| } | ||
| newMetaInfo.binlogOffset.Offset = &a | ||
| newMetaInfo.binlogOffset.Filenum = &b | ||
|
|
||
| slotId := uint32(*dbInfo.SlotNum) | ||
| trySync := &inner.InnerRequest{ | ||
| Type: &trySyncType, | ||
| TrySync: &inner.InnerRequest_TrySync{ | ||
| Node: &inner.Node{ | ||
| Ip: &repl.ip, | ||
| Port: &repl.port, | ||
| }, | ||
| Slot: &inner.Slot{ | ||
| DbName: dbInfo.DbName, | ||
| SlotId: &slotId, | ||
| }, | ||
| BinlogOffset: newMetaInfo.binlogOffset, | ||
| }, | ||
| ConsensusMeta: nil, | ||
| } | ||
| if err := repl.sendReplReq(trySync); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| trySyncResp := repl.getResponse() | ||
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | ||
| logrus.Fatal("Failed to get TrySync Response Msg") | ||
| } | ||
| startOffset := trySyncResp.TrySync.GetBinlogOffset() | ||
| trySync.TrySync.BinlogOffset = startOffset | ||
| // send twice to get session id | ||
| if err := repl.sendReplReq(trySync); err != nil { | ||
| return err | ||
| } | ||
| trySyncResp = repl.getResponse() | ||
|
|
||
| newMetaInfo.binlogOffset = startOffset | ||
| newMetaInfo.sessionId = *trySyncResp.TrySync.SessionId | ||
| newMetaInfo.isFirst = true | ||
| repl.binlogSyncInfos = append(repl.binlogSyncInfos, newMetaInfo) | ||
| } | ||
|
|
||
| // todo(leehao): Can find ways to optimize using coroutines here. May be use goroutine | ||
| for index, dbInfo := range repl.binlogSyncInfos { | ||
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | ||
| binlogSyncReq := &inner.InnerRequest{ | ||
| Type: &binlogSyncType, | ||
| MetaSync: nil, | ||
| TrySync: nil, | ||
| DbSync: nil, | ||
| BinlogSync: &inner.InnerRequest_BinlogSync{ | ||
| Node: &inner.Node{ | ||
| Ip: &repl.ip, | ||
| Port: &repl.port, | ||
| }, | ||
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | ||
| SlotId: &slotId, | ||
| AckRangeStart: dbInfo.binlogOffset, | ||
| AckRangeEnd: dbInfo.binlogOffset, | ||
| SessionId: &dbInfo.sessionId, | ||
| FirstSend: &dbInfo.isFirst, | ||
| }, | ||
| RemoveSlaveNode: nil, | ||
| ConsensusMeta: nil, | ||
| } | ||
| if err := repl.sendReplReq(binlogSyncReq); err != nil { | ||
| return err | ||
| } | ||
| repl.binlogSyncInfos[index].isFirst = false | ||
| } | ||
| return nil | ||
| } |
There was a problem hiding this comment.
Improve Error Handling in GetSyncWithPika
The use of logrus.Fatal for error handling will cause the application to exit abruptly. Consider returning errors or using a more graceful logging approach.
- logrus.Fatal("Failed to get metaResp")
+ return fmt.Errorf("failed to get metaResp")Apply similar changes to other logrus.Fatal calls within this function.
Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (repl *ReplProtocol) GetSyncWithPika() error { | |
| if err := repl.sendMetaSyncRequest(); err != nil { | |
| return err | |
| } | |
| metaResp := repl.getResponse() | |
| if metaResp == nil { | |
| logrus.Fatal("Failed to get metaResp") | |
| } | |
| repl.dbMetaInfo = metaResp.MetaSync | |
| trySyncType := inner.Type_kTrySync | |
| binlogSyncType := inner.Type_kBinlogSync | |
| replDBs := metaResp.MetaSync.DbsInfo | |
| var a uint64 = 0 | |
| var b uint32 = 0 | |
| for _, dbInfo := range replDBs { | |
| newMetaInfo := binlogSyncInfo{ | |
| binlogOffset: &inner.BinlogOffset{ | |
| Filenum: nil, | |
| Offset: nil, | |
| Term: nil, | |
| Index: nil, | |
| }, | |
| fileNum: 0, | |
| offset: 0, | |
| sessionId: 0, | |
| } | |
| newMetaInfo.binlogOffset.Offset = &a | |
| newMetaInfo.binlogOffset.Filenum = &b | |
| slotId := uint32(*dbInfo.SlotNum) | |
| trySync := &inner.InnerRequest{ | |
| Type: &trySyncType, | |
| TrySync: &inner.InnerRequest_TrySync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| Slot: &inner.Slot{ | |
| DbName: dbInfo.DbName, | |
| SlotId: &slotId, | |
| }, | |
| BinlogOffset: newMetaInfo.binlogOffset, | |
| }, | |
| ConsensusMeta: nil, | |
| } | |
| if err := repl.sendReplReq(trySync); err != nil { | |
| return err | |
| } | |
| trySyncResp := repl.getResponse() | |
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | |
| logrus.Fatal("Failed to get TrySync Response Msg") | |
| } | |
| startOffset := trySyncResp.TrySync.GetBinlogOffset() | |
| trySync.TrySync.BinlogOffset = startOffset | |
| // send twice to get session id | |
| if err := repl.sendReplReq(trySync); err != nil { | |
| return err | |
| } | |
| trySyncResp = repl.getResponse() | |
| newMetaInfo.binlogOffset = startOffset | |
| newMetaInfo.sessionId = *trySyncResp.TrySync.SessionId | |
| newMetaInfo.isFirst = true | |
| repl.binlogSyncInfos = append(repl.binlogSyncInfos, newMetaInfo) | |
| } | |
| // todo(leehao): Can find ways to optimize using coroutines here. May be use goroutine | |
| for index, dbInfo := range repl.binlogSyncInfos { | |
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | |
| binlogSyncReq := &inner.InnerRequest{ | |
| Type: &binlogSyncType, | |
| MetaSync: nil, | |
| TrySync: nil, | |
| DbSync: nil, | |
| BinlogSync: &inner.InnerRequest_BinlogSync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | |
| SlotId: &slotId, | |
| AckRangeStart: dbInfo.binlogOffset, | |
| AckRangeEnd: dbInfo.binlogOffset, | |
| SessionId: &dbInfo.sessionId, | |
| FirstSend: &dbInfo.isFirst, | |
| }, | |
| RemoveSlaveNode: nil, | |
| ConsensusMeta: nil, | |
| } | |
| if err := repl.sendReplReq(binlogSyncReq); err != nil { | |
| return err | |
| } | |
| repl.binlogSyncInfos[index].isFirst = false | |
| } | |
| return nil | |
| } | |
| func (repl *ReplProtocol) GetSyncWithPika() error { | |
| if err := repl.sendMetaSyncRequest(); err != nil { | |
| return err | |
| } | |
| metaResp := repl.getResponse() | |
| if metaResp == nil { | |
| return fmt.Errorf("failed to get metaResp") | |
| } | |
| repl.dbMetaInfo = metaResp.MetaSync | |
| trySyncType := inner.Type_kTrySync | |
| binlogSyncType := inner.Type_kBinlogSync | |
| replDBs := metaResp.MetaSync.DbsInfo | |
| var a uint64 = 0 | |
| var b uint32 = 0 | |
| for _, dbInfo := range replDBs { | |
| newMetaInfo := binlogSyncInfo{ | |
| binlogOffset: &inner.BinlogOffset{ | |
| Filenum: nil, | |
| Offset: nil, | |
| Term: nil, | |
| Index: nil, | |
| }, | |
| fileNum: 0, | |
| offset: 0, | |
| sessionId: 0, | |
| } | |
| newMetaInfo.binlogOffset.Offset = &a | |
| newMetaInfo.binlogOffset.Filenum = &b | |
| slotId := uint32(*dbInfo.SlotNum) | |
| trySync := &inner.InnerRequest{ | |
| Type: &trySyncType, | |
| TrySync: &inner.InnerRequest_TrySync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| Slot: &inner.Slot{ | |
| DbName: dbInfo.DbName, | |
| SlotId: &slotId, | |
| }, | |
| BinlogOffset: newMetaInfo.binlogOffset, | |
| }, | |
| ConsensusMeta: nil, | |
| } | |
| if err := repl.sendReplReq(trySync); err != nil { | |
| return err | |
| } | |
| trySyncResp := repl.getResponse() | |
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | |
| return fmt.Errorf("failed to get TrySync Response Msg") | |
| } | |
| startOffset := trySyncResp.TrySync.GetBinlogOffset() | |
| trySync.TrySync.BinlogOffset = startOffset | |
| // send twice to get session id | |
| if err := repl.sendReplReq(trySync); err != nil { | |
| return err | |
| } | |
| trySyncResp = repl.getResponse() | |
| newMetaInfo.binlogOffset = startOffset | |
| newMetaInfo.sessionId = *trySyncResp.TrySync.SessionId | |
| newMetaInfo.isFirst = true | |
| repl.binlogSyncInfos = append(repl.binlogSyncInfos, newMetaInfo) | |
| } | |
| // todo(leehao): Can find ways to optimize using coroutines here. May be use goroutine | |
| for index, dbInfo := range repl.binlogSyncInfos { | |
| slotId := uint32(*repl.dbMetaInfo.DbsInfo[index].SlotNum) | |
| binlogSyncReq := &inner.InnerRequest{ | |
| Type: &binlogSyncType, | |
| MetaSync: nil, | |
| TrySync: nil, | |
| DbSync: nil, | |
| BinlogSync: &inner.InnerRequest_BinlogSync{ | |
| Node: &inner.Node{ | |
| Ip: &repl.ip, | |
| Port: &repl.port, | |
| }, | |
| DbName: repl.dbMetaInfo.DbsInfo[index].DbName, | |
| SlotId: &slotId, | |
| AckRangeStart: dbInfo.binlogOffset, | |
| AckRangeEnd: dbInfo.binlogOffset, | |
| SessionId: &dbInfo.sessionId, | |
| FirstSend: &dbInfo.isFirst, | |
| }, | |
| RemoveSlaveNode: nil, | |
| ConsensusMeta: nil, | |
| } | |
| if err := repl.sendReplReq(binlogSyncReq); err != nil { | |
| return err | |
| } | |
| repl.binlogSyncInfos[index].isFirst = false | |
| } | |
| return nil | |
| } |
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Actionable comments posted: 18
Outside diff range, codebase verification and nitpick comments (1)
tools/pika_cdc/README.md (1)
19-19: Fix the heading.The "Todo" heading has the following issues:
- It is missing a hyphen.
- It has a trailing colon.
Apply this diff to fix the heading:
-## Todo: +## To-doTools
LanguageTool
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
Markdownlint
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (11)
- tools/pika_cdc/README.md (1 hunks)
- tools/pika_cdc/conf/cdc.yml (1 hunks)
- tools/pika_cdc/conf/conf.go (1 hunks)
- tools/pika_cdc/consumer/consumer.go (1 hunks)
- tools/pika_cdc/consumer/kafka.go (1 hunks)
- tools/pika_cdc/consumer/protocol.go (1 hunks)
- tools/pika_cdc/consumer/redis.go (1 hunks)
- tools/pika_cdc/main.go (1 hunks)
- tools/pika_cdc/pika/replprotocol.go (1 hunks)
- tools/pika_cdc/pika/replprotocol_test.go (1 hunks)
- tools/pika_cdc/pika/server.go (1 hunks)
Additional context used
LanguageTool
tools/pika_cdc/README.md
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
Markdownlint
tools/pika_cdc/README.md
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
GitHub Check: CodeQL
tools/pika_cdc/pika/server.go
[failure] 30-30: Incorrect conversion between integer types
Incorrect conversion of an integer with architecture-dependent bit size from strconv.Atoi to a lower bit size type int32 without an upper bound check.
Additional comments not posted (25)
tools/pika_cdc/conf/cdc.yml (1)
1-20: LGTM! The configuration file is well-structured and covers the essential settings for Pika CDC.The file is a good addition to the project as it provides a centralized configuration for Pika CDC. The configuration options cover the essential components and settings required for Pika CDC, and the default values seem reasonable.
A few suggestions for improvement:
- Consider adding comments to explain the purpose of each component (Pika server, Kafka servers, Redis servers, Pulsar servers) and how they are used in Pika CDC.
- Consider adding a section for logging configuration to control the verbosity and destination of logs.
- Consider adding a section for monitoring configuration to enable metrics collection and monitoring of Pika CDC.
tools/pika_cdc/README.md (2)
6-17: LGTM!The build instructions are clear and easy to follow.
21-24: LGTM!The consumer side todo list is clear and easy to understand.
tools/pika_cdc/consumer/protocol.go (2)
8-10: LGTM!The code changes are approved.
25-27: LGTM!The code changes are approved.
tools/pika_cdc/main.go (2)
12-12: Duplicate comments: Improve error logging.The existing review comments suggesting the use of
logrus.Fatalfinstead oflogrus.Fatalto include the actual error message are still applicable.Also applies to: 15-15
10-23: LGTM!The code changes in the main function are approved. The function follows a logical flow of connecting to the Pika server, generating consumers, and running them.
tools/pika_cdc/consumer/consumer.go (1)
22-22: ** Handle errors when creating Kafka and Redis consumers.**The comments from the previous reviews are still applicable. The errors returned by
NewKafkaandNewRedisare being ignored in the current code. Consider handling these errors to ensure robustness.Also applies to: 28-28
tools/pika_cdc/conf/conf.go (3)
31-33: The previous review comment suggesting the update of deprecatedioutil.ReadFileusage toos.ReadFileis still valid and applicable to the current code segment. Please refer to the previous comment and apply the suggested changes.
33-33: The previous review comment suggesting the improvement of error logging by including the filename for better context is still valid and applicable to the current code segment. Please refer to the previous comment and apply the suggested changes.
37-38: The previous review comment suggesting the improvement of error logging for YAML unmarshalling to be more descriptive is still valid and applicable to the current code segment. Please refer to the previous comment and apply the suggested changes.tools/pika_cdc/consumer/kafka.go (4)
21-24: The previous review comment on theSendCmdMessagemethod is still valid. The method should handle errors for better debugging.
30-47: LGTM!The code changes are approved. The
NewKafkafunction handles errors correctly by returning the error.
71-88: LGTM!The code changes are approved. The
Runmethod implements the functionality to consume messages from channels and send them to Kafka correctly.
89-91: LGTM!The code changes are approved. The
Stopmethod implements the functionality to stop the consumer correctly.tools/pika_cdc/consumer/redis.go (1)
78-80: LGTM!The
Stopmethod implementation looks good.tools/pika_cdc/pika/server.go (5)
40-60: Return errors instead of logging fatal errors inNew.The previous comment is still applicable:
Ensure proper error handling and resource management in
New.The
Newfunction logs fatal errors, which can terminate the program unexpectedly. Consider returning the error instead.Apply this diff to return the error instead of logging fatal errors:
func New(s string, bufferMsgNumber int) (Server, error) { server := Server{} server.MsgChanns = make(map[string]chan []byte) conn, err := net.Dial("tcp", s) if err != nil { - logrus.Fatal("Error connecting to Pika server:", err) + return Server{}, fmt.Errorf("Error connecting to Pika server: %v", err) } server.bufferMsgNumber = bufferMsgNumber server.pikaConn = conn server.writer = bufio.NewWriter(server.pikaConn) server.reader = bufio.NewReader(server.pikaConn) server.pikaReplProtocol = ReplProtocol{ writer: server.writer, reader: server.reader, ip: getIP(conn.LocalAddr().String()), port: getPort(conn.LocalAddr().String()), } err = server.CreateSyncWithPika() server.buildMsgChann() return server, err }
69-88: Log errors inRunmethod.The previous comment is still applicable:
Consider logging errors in
Runmethod.The
Runmethod does not handle errors fromGetBinlogSync. Consider logging these errors for better debugging.Apply this diff to log errors from
GetBinlogSync:func (s *Server) Run() { for { select { case <-s.stop: return case <-time.After(100 * time.Millisecond): - binlogBytes, _ := s.pikaReplProtocol.GetBinlogSync() + binlogBytes, err := s.pikaReplProtocol.GetBinlogSync() + if err != nil { + logrus.Errorf("Error getting binlog sync: %v", err) + continue + } if len(binlogBytes) != 0 { for dbName, binlog := range binlogBytes { chann, exists := s.MsgChanns[dbName] if !exists { chann = make(chan []byte, s.bufferMsgNumber) s.MsgChanns[dbName] = chann } chann <- binlog } } } } }
90-96: Use a controlled shutdown process inExitmethod.The previous comment is still applicable:
Ensure proper closure of channels in
Exitmethod.The
Exitmethod closes thestopchannel, which could cause a panic ifRunis still selecting on it. Consider using a more controlled shutdown process.Apply this diff to use a non-blocking send on the
stopchannel for a controlled shutdown:func (s *Server) Exit() { - s.stop <- true - close(s.stop) + select { + case s.stop <- true: + default: + } for _, chann := range s.MsgChanns { close(chann) } }
98-100: Handle errors inCreateSyncWithPikamethod.The previous comment is still applicable:
Ensure
CreateSyncWithPikahandles errors properly.The
CreateSyncWithPikamethod callsGetSyncWithPikabut does not handle potential errors. Ensure errors are logged or handled appropriately.Apply this diff to log errors from
GetSyncWithPika:func (s *Server) CreateSyncWithPika() error { - return s.pikaReplProtocol.GetSyncWithPika() + err := s.pikaReplProtocol.GetSyncWithPika() + if err != nil { + logrus.Errorf("Error creating sync with Pika: %v", err) + } + return err }
27-31: Handle potential errors and perform bounds check ingetPort.The previous comment is still applicable:
Handle potential errors in
getPort.The
getPortfunction ignores errors fromstrconv.Atoi. Consider handling the error to avoid potential issues with invalid input.Additionally, converting the port number to
int32without an upper bound check can lead to integer overflow.Apply this diff to handle the error and perform a bounds check before the type conversion:
func getPort(addr string) int32 { portStr := addr[strings.LastIndex(addr, ":")+1:] - port, _ := strconv.Atoi(portStr) + port, err := strconv.Atoi(portStr) + if err != nil { + logrus.Errorf("Invalid port in address %s: %v", addr, err) + return 0 + } + if port < 0 || port > 65535 { + logrus.Errorf("Port %d out of range in address %s", port, addr) + return 0 + } return int32(port) }Tools
GitHub Check: CodeQL
[failure] 30-30: Incorrect conversion between integer types
Incorrect conversion of an integer with architecture-dependent bit size from strconv.Atoi to a lower bit size type int32 without an upper bound check.tools/pika_cdc/pika/replprotocol_test.go (4)
142-166: LGTM!The code changes are approved.
275-280: LGTM!The code changes are approved.
398-419: LGTM!The code changes are approved.
421-462: LGTM!The code changes are approved.
| @@ -0,0 +1,24 @@ | |||
| # Pika cdc | |||
| **A tool for incremental synchronization of pika command** | |||
There was a problem hiding this comment.
Convert the emphasis to a heading.
The tool name "A tool for incremental synchronization of pika command" is emphasized using double asterisks. It should be a heading instead.
Apply this diff to convert the emphasis to a heading:
-**A tool for incremental synchronization of pika command**
+## A tool for incremental synchronization of pika commandCommittable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| **A tool for incremental synchronization of pika command** | |
| ## A tool for incremental synchronization of pika command |
Tools
Markdownlint
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
| func (rp RedisProtocol) Select(dbName string) []byte { | ||
| db, _ := strconv.Atoi(dbName[len(dbName)-1:]) | ||
| dbStr := strconv.Itoa(db) | ||
| msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr) | ||
| return []byte(msg) | ||
| } |
There was a problem hiding this comment.
Fix the database name parsing and error handling.
The Select method has the following issues:
- The database name is assumed to end with a single digit. This assumption may not always hold true.
- The error returned by
strconv.Atoiis ignored. This can lead to unexpected behavior if the database name does not end with a valid integer.
Consider applying this diff to fix the issues:
-func (rp RedisProtocol) Select(dbName string) []byte {
- db, _ := strconv.Atoi(dbName[len(dbName)-1:])
+func (rp RedisProtocol) Select(dbName string) ([]byte, error) {
+ db, err := strconv.Atoi(dbName)
+ if err != nil {
+ return nil, fmt.Errorf("invalid database name: %s", dbName)
+ }
dbStr := strconv.Itoa(db)
msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr)
- return []byte(msg)
+ return []byte(msg), nil
}Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (rp RedisProtocol) Select(dbName string) []byte { | |
| db, _ := strconv.Atoi(dbName[len(dbName)-1:]) | |
| dbStr := strconv.Itoa(db) | |
| msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr) | |
| return []byte(msg) | |
| } | |
| func (rp RedisProtocol) Select(dbName string) ([]byte, error) { | |
| db, err := strconv.Atoi(dbName) | |
| if err != nil { | |
| return nil, fmt.Errorf("invalid database name: %s", dbName) | |
| } | |
| dbStr := strconv.Itoa(db) | |
| msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr) | |
| return []byte(msg), nil | |
| } |
| func GenerateConsumers(config conf.PikaCdcConfig, msgChanns map[string]chan []byte) ([]Consumer, error) { | ||
| var consumers []Consumer | ||
|
|
||
| // kafka | ||
| for _, k := range config.KafkaServers { | ||
| kafka, _ := NewKafka(k, config.Retries, msgChanns) | ||
| consumers = append(consumers, kafka) | ||
| } | ||
|
|
||
| // redis | ||
| for _, r := range config.RedisServers { | ||
| newRedis, _ := NewRedis(r, msgChanns) | ||
| consumers = append(consumers, newRedis) | ||
| } | ||
| return consumers, nil | ||
| } |
There was a problem hiding this comment.
Refactor the GenerateConsumers function to reduce code duplication.
The code for creating Kafka and Redis consumers is similar. Consider refactoring the function to reduce code duplication.
Here's a suggested refactor:
func GenerateConsumers(config conf.PikaCdcConfig, msgChanns map[string]chan []byte) ([]Consumer, error) {
var consumers []Consumer
var err error
// Create Kafka consumers
for _, k := range config.KafkaServers {
var consumer Consumer
consumer, err = NewKafka(k, config.Retries, msgChanns)
if err != nil {
return nil, fmt.Errorf("failed to create Kafka consumer: %v", err)
}
consumers = append(consumers, consumer)
}
// Create Redis consumers
for _, r := range config.RedisServers {
var consumer Consumer
consumer, err = NewRedis(r, msgChanns)
if err != nil {
return nil, fmt.Errorf("failed to create Redis consumer: %v", err)
}
consumers = append(consumers, consumer)
}
return consumers, nil
}This refactor:
- Handles the errors returned by
NewKafkaandNewRedis. - Reduces code duplication by using a similar structure for creating Kafka and Redis consumers.
- Returns an error if any of the consumer creations fail.
tools/pika_cdc/consumer/kafka.go
Outdated
| func (k *Kafka) Close() error { | ||
| //var err error | ||
| //err = nil | ||
| //k.once.Do(func() { | ||
| // err = k.close() | ||
| //}) | ||
| //return err | ||
| return nil | ||
| } |
There was a problem hiding this comment.
Implement functionality to close the consumer.
The Close method is currently empty with all the code commented out. Implement functionality to close the consumer.
Apply this diff to implement the functionality:
func (k *Kafka) Close() error {
- //var err error
- //err = nil
- //k.once.Do(func() {
- // err = k.close()
- //})
- //return err
+ var err error
+ k.once.Do(func() {
+ err = k.close()
+ })
+ return err
- return nil
}Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (k *Kafka) Close() error { | |
| //var err error | |
| //err = nil | |
| //k.once.Do(func() { | |
| // err = k.close() | |
| //}) | |
| //return err | |
| return nil | |
| } | |
| func (k *Kafka) Close() error { | |
| var err error | |
| k.once.Do(func() { | |
| err = k.close() | |
| }) | |
| return err | |
| } |
tools/pika_cdc/consumer/kafka.go
Outdated
| func (k *Kafka) close() error { | ||
| //k.stopChan <- true | ||
| //close(k.stopChan) | ||
| //close(*k.messageChan) | ||
| //for _, conn := range k.kafkaConns { | ||
| // err := conn.Close() | ||
| // if err != nil { | ||
| // logrus.Warn(err) | ||
| // return err | ||
| // } | ||
| //} | ||
| return nil | ||
| } |
There was a problem hiding this comment.
Implement functionality to close the connections and channels.
The close method is currently empty with all the code commented out. Implement functionality to close the connections and channels.
Apply this diff to implement the functionality:
func (k *Kafka) close() error {
- //k.stopChan <- true
- //close(k.stopChan)
- //close(*k.messageChan)
- //for _, conn := range k.kafkaConns {
- // err := conn.Close()
- // if err != nil {
- // logrus.Warn(err)
- // return err
- // }
- //}
+ k.stopChan <- true
+ close(k.stopChan)
+ for _, conn := range k.kafkaConns {
+ err := conn.Close()
+ if err != nil {
+ logrus.Warn(err)
+ return err
+ }
+ }
return nil
}Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (k *Kafka) close() error { | |
| //k.stopChan <- true | |
| //close(k.stopChan) | |
| //close(*k.messageChan) | |
| //for _, conn := range k.kafkaConns { | |
| // err := conn.Close() | |
| // if err != nil { | |
| // logrus.Warn(err) | |
| // return err | |
| // } | |
| //} | |
| return nil | |
| } | |
| func (k *Kafka) close() error { | |
| k.stopChan <- true | |
| close(k.stopChan) | |
| for _, conn := range k.kafkaConns { | |
| err := conn.Close() | |
| if err != nil { | |
| logrus.Warn(err) | |
| return err | |
| } | |
| } | |
| return nil | |
| } |
| func TestGetOffsetFromMaster(t *testing.T) { | ||
| ip := string("127.0.0.1") | ||
| listener, e := net.Listen("tcp", ":0") | ||
| if e != nil { | ||
| os.Exit(1) | ||
| } | ||
| selfPort := getPort(listener.Addr().String()) | ||
| conn, err := sendMetaSyncRequest(nil) | ||
| if err != nil { | ||
| logrus.Fatal("Failed to sendMetaSyncRequest") | ||
| } | ||
| metaResp := getResponse(conn) | ||
| trySyncType := inner.Type_kTrySync | ||
| replDBs := metaResp.MetaSync.DbsInfo | ||
| var fileNum uint32 = 1 | ||
| var offset uint64 = 0 | ||
| for _, db := range replDBs { | ||
| slotId := uint32(*db.SlotNum) | ||
| trySync := &inner.InnerRequest{ | ||
| Type: &trySyncType, | ||
| TrySync: &inner.InnerRequest_TrySync{ | ||
| Node: &inner.Node{ | ||
| Ip: &ip, | ||
| Port: &selfPort, | ||
| }, | ||
| Slot: &inner.Slot{ | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| }, | ||
| BinlogOffset: &inner.BinlogOffset{ | ||
| Filenum: &fileNum, | ||
| Offset: &offset, | ||
| Term: nil, | ||
| Index: nil, | ||
| }, | ||
| }, | ||
| ConsensusMeta: nil, | ||
| } | ||
| _, err = sendReplReq(conn, trySync) | ||
| if err != nil { | ||
| logrus.Fatal("Failed to send TrySync Msg", err) | ||
| } | ||
| trySyncResp := getResponse(conn) | ||
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | ||
| logrus.Fatal("Failed to get TrySync Response Msg", err) | ||
| } | ||
| trySync.TrySync.BinlogOffset = trySyncResp.TrySync.GetBinlogOffset() | ||
| logrus.Println("get offset:", trySync.TrySync.BinlogOffset) | ||
| } | ||
| } |
There was a problem hiding this comment.
Enhance TestGetOffsetFromMaster with Assertions and Error Handling
The TestGetOffsetFromMaster function lacks assertions to verify expected outcomes and does not handle errors effectively. Consider adding assertions and handling errors properly.
if metaResp == nil {
t.Fatal("Failed to get metaResp")
}
if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk {
t.Fatalf("Failed to get TrySync Response Msg: %v", err)
}| func TestSendDbSyncReqMsg(t *testing.T) { | ||
| ip := string("127.0.0.1") | ||
| listener, e := net.Listen("tcp", ":0") | ||
| if e != nil { | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| selfPort := getPort(listener.Addr().String()) | ||
|
|
||
| metaSyncType := inner.Type_kMetaSync | ||
|
|
||
| request := &inner.InnerRequest{ | ||
| Type: &metaSyncType, | ||
| MetaSync: &inner.InnerRequest_MetaSync{ | ||
| Node: &inner.Node{ | ||
| Ip: &ip, | ||
| Port: &selfPort, | ||
| }, | ||
| }, | ||
| } | ||
| conn, err := sendReplReq(nil, request) | ||
| if err != nil { | ||
| os.Exit(1) | ||
| } | ||
| metaResp := getResponse(conn) | ||
|
|
||
| dbSyncType := inner.Type_kDBSync | ||
| replDBs := metaResp.MetaSync.DbsInfo | ||
| for _, db := range replDBs { | ||
| var fileNum uint32 = 1 | ||
| var offset uint64 = 0 | ||
| slotId := uint32(*db.SlotNum) | ||
| dbSyncReq := &inner.InnerRequest{ | ||
| Type: &dbSyncType, | ||
| DbSync: &inner.InnerRequest_DBSync{ | ||
| Node: &inner.Node{ | ||
| Ip: &ip, | ||
| Port: &selfPort, | ||
| }, | ||
| Slot: &inner.Slot{ | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| }, | ||
| BinlogOffset: &inner.BinlogOffset{ | ||
| Filenum: &fileNum, | ||
| Offset: &offset, | ||
| Term: nil, | ||
| Index: nil, | ||
| }, | ||
| }, | ||
| ConsensusMeta: nil, | ||
| } | ||
| sendReplReq(conn, dbSyncReq) | ||
| } |
There was a problem hiding this comment.
Enhance TestSendDbSyncReqMsg with Assertions and Error Handling
The TestSendDbSyncReqMsg function lacks assertions to verify expected outcomes and does not handle errors effectively. Consider adding assertions and handling errors properly.
if metaResp == nil {
t.Fatal("Failed to get metaResp")
}| func sendReplReq(conn net.Conn, request *inner.InnerRequest) (net.Conn, error) { | ||
| if conn == nil { | ||
| ip := string("127.0.0.1") | ||
| var masterReplPort int32 = getPort(conf.ConfigInstance.PikaServer) + 2000 | ||
| addr := ip + ":" + strconv.Itoa(int(masterReplPort)) | ||
| newConn, err := net.Dial("tcp", addr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| conn = newConn | ||
| } | ||
| msg, err := proto.Marshal(request) | ||
| if err != nil { | ||
| logrus.Fatal("Error Marshal:", err) | ||
| } | ||
|
|
||
| pikaTag := []byte(BuildInternalTag(msg)) | ||
| allBytes := append(pikaTag, msg...) | ||
| _, err = conn.Write(allBytes) | ||
| if err != nil { | ||
| logrus.Fatal("Error writing to server:", err) | ||
| } | ||
| return conn, nil | ||
| } |
There was a problem hiding this comment.
Improve Error Handling in sendReplReq
The use of logrus.Fatal for error handling will cause the application to exit abruptly. Consider returning errors or using a more graceful logging approach.
- logrus.Fatal("Error Marshal:", err)
+ return nil, fmt.Errorf("error marshal: %v", err)Apply similar changes to other logrus.Fatal calls within this function.
Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func sendReplReq(conn net.Conn, request *inner.InnerRequest) (net.Conn, error) { | |
| if conn == nil { | |
| ip := string("127.0.0.1") | |
| var masterReplPort int32 = getPort(conf.ConfigInstance.PikaServer) + 2000 | |
| addr := ip + ":" + strconv.Itoa(int(masterReplPort)) | |
| newConn, err := net.Dial("tcp", addr) | |
| if err != nil { | |
| return nil, err | |
| } | |
| conn = newConn | |
| } | |
| msg, err := proto.Marshal(request) | |
| if err != nil { | |
| logrus.Fatal("Error Marshal:", err) | |
| } | |
| pikaTag := []byte(BuildInternalTag(msg)) | |
| allBytes := append(pikaTag, msg...) | |
| _, err = conn.Write(allBytes) | |
| if err != nil { | |
| logrus.Fatal("Error writing to server:", err) | |
| } | |
| return conn, nil | |
| } | |
| func sendReplReq(conn net.Conn, request *inner.InnerRequest) (net.Conn, error) { | |
| if conn == nil { | |
| ip := string("127.0.0.1") | |
| var masterReplPort int32 = getPort(conf.ConfigInstance.PikaServer) + 2000 | |
| addr := ip + ":" + strconv.Itoa(int(masterReplPort)) | |
| newConn, err := net.Dial("tcp", addr) | |
| if err != nil { | |
| return nil, err | |
| } | |
| conn = newConn | |
| } | |
| msg, err := proto.Marshal(request) | |
| if err != nil { | |
| return nil, fmt.Errorf("error marshal: %v", err) | |
| } | |
| pikaTag := []byte(BuildInternalTag(msg)) | |
| allBytes := append(pikaTag, msg...) | |
| _, err = conn.Write(allBytes) | |
| if err != nil { | |
| return nil, fmt.Errorf("error writing to server: %v", err) | |
| } | |
| return conn, nil | |
| } |
| logrus.Fatal(err) | ||
| } | ||
| metaResp := getResponse(conn) | ||
| if metaResp == nil { | ||
| logrus.Fatal("Failed to get metaResp") | ||
| } | ||
| trySyncType := inner.Type_kTrySync | ||
| binlogSyncType := inner.Type_kBinlogSync | ||
| replDBs := metaResp.MetaSync.DbsInfo | ||
| var fileNum uint32 = 1 | ||
| var offset uint64 = 0 | ||
| ip := getIP(conn.LocalAddr().String()) | ||
| port := getPort(conn.LocalAddr().String()) | ||
|
|
||
| for _, db := range replDBs { | ||
| slotId := uint32(*db.SlotNum) | ||
| trySync := &inner.InnerRequest{ | ||
| Type: &trySyncType, | ||
| TrySync: &inner.InnerRequest_TrySync{ | ||
| Node: &inner.Node{ | ||
| Ip: &ip, | ||
| Port: &port, | ||
| }, | ||
| Slot: &inner.Slot{ | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| }, | ||
| BinlogOffset: &inner.BinlogOffset{ | ||
| Filenum: &fileNum, | ||
| Offset: &offset, | ||
| Term: nil, | ||
| Index: nil, | ||
| }, | ||
| }, | ||
| ConsensusMeta: nil, | ||
| } | ||
| _, err = sendReplReq(conn, trySync) | ||
| if err != nil { | ||
| logrus.Fatal("Failed to send TrySync Msg", err) | ||
| } | ||
| trySyncResp := getResponse(conn) | ||
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | ||
| logrus.Fatal("Failed to get TrySync Response Msg", err) | ||
| } | ||
| startOffset := trySyncResp.TrySync.GetBinlogOffset() | ||
| trySync.TrySync.BinlogOffset = startOffset | ||
| // send twice to get session id | ||
| sendReplReq(conn, trySync) | ||
| trySyncResp = getResponse(conn) | ||
|
|
||
| isFirst := true | ||
| binlogSyncReq := &inner.InnerRequest{ | ||
| Type: &binlogSyncType, | ||
| MetaSync: nil, | ||
| TrySync: nil, | ||
| DbSync: nil, | ||
| BinlogSync: &inner.InnerRequest_BinlogSync{ | ||
| Node: trySync.TrySync.Node, | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| AckRangeStart: startOffset, | ||
| AckRangeEnd: startOffset, | ||
| SessionId: trySyncResp.TrySync.SessionId, | ||
| FirstSend: &isFirst, | ||
| }, | ||
| RemoveSlaveNode: nil, | ||
| ConsensusMeta: nil, | ||
| } | ||
| sendReplReq(conn, binlogSyncReq) | ||
| go func() { | ||
| for { | ||
| binlogSyncResp := getResponse(conn) | ||
| if binlogSyncResp == nil || *binlogSyncResp.Code != inner.StatusCode_kOk || | ||
| *binlogSyncResp.Type != inner.Type_kBinlogSync || binlogSyncResp.BinlogSync == nil { | ||
| logrus.Fatal("get binlog sync response failed") | ||
| } else { | ||
| for _, item := range binlogSyncResp.BinlogSync { | ||
| *binlogSyncReq.BinlogSync.FirstSend = false | ||
| if len(item.Binlog) == 0 { | ||
| *binlogSyncReq.BinlogSync.AckRangeStart.Filenum = 0 | ||
| *binlogSyncReq.BinlogSync.AckRangeStart.Offset = 0 | ||
| logrus.Println("receive binlog response keep alive") | ||
| } else { | ||
| binlogSyncReq.BinlogSync.AckRangeStart = item.BinlogOffset | ||
| binlogSyncReq.BinlogSync.AckRangeEnd = item.BinlogOffset | ||
| if binlogItem, err := DecodeBinlogItem(item.Binlog); err != nil { | ||
| logrus.Fatal(err) | ||
| } else { | ||
| SendRedisData("127.0.0.1:6379", binlogItem.Content) | ||
| } | ||
| } | ||
| sendReplReq(conn, binlogSyncReq) | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| } | ||
| for { | ||
| } | ||
| } |
There was a problem hiding this comment.
Refactor TestGetIncrementalSync and Improve Error Handling
The TestGetIncrementalSync function is quite large and complex. Consider breaking it down into smaller, more focused functions for better readability and maintainability.
Also, the use of logrus.Fatal for error handling will cause the application to exit abruptly. Consider returning errors or using a more graceful logging approach.
- logrus.Fatal(err)
+ t.Fatalf("Failed to send meta sync request: %v", err)Apply similar changes to other logrus.Fatal calls within this function.
Committable suggestion was skipped due to low confidence.
| func getResponse(conn net.Conn) *inner.InnerResponse { | ||
| // Read the header (length) | ||
| header := make([]byte, HeaderLength) | ||
| _, err := io.ReadFull(conn, header) | ||
| if err != nil { | ||
| if err != io.EOF { | ||
| fmt.Println("Error reading header:", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Convert the header to an integer | ||
| var bodyLength uint32 | ||
| buffer := bytes.NewBuffer(header) | ||
| err = binary.Read(buffer, binary.BigEndian, &bodyLength) | ||
| if err != nil { | ||
| logrus.Fatal("Error converting header to integer:", err) | ||
| return nil | ||
| } | ||
| // Read the body | ||
| body := make([]byte, bodyLength) | ||
| _, err = io.ReadFull(conn, body) | ||
| if err != nil { | ||
| logrus.Fatal("Error reading body:", err) | ||
| return nil | ||
| } | ||
|
|
||
| res := &inner.InnerResponse{} | ||
| err = proto.Unmarshal(body, res) | ||
| if err != nil { | ||
| logrus.Fatal("Error Deserialization:", err) | ||
| } | ||
| return res | ||
| } |
There was a problem hiding this comment.
Improve Error Handling in getResponse
The use of logrus.Fatal for error handling will cause the application to exit abruptly. Consider returning errors or using a more graceful logging approach.
- logrus.Fatal("Error converting header to integer:", err)
+ fmt.Println("Error converting header to integer:", err)
+ return nilApply similar changes to other logrus.Fatal calls within this function.
Committable suggestion was skipped due to low confidence.
tools/pika_cdc/consumer/kafka.go
Outdated
| } | ||
|
|
||
| func (k *Kafka) close() error { | ||
| //k.stopChan <- true |
tools/pika_cdc/conf/conf.go
Outdated
| PikaServer string `yaml:"pika_server"` | ||
| KafkaServers []string `yaml:"kafka_servers"` | ||
| RedisServers []string `yaml:"redis_servers"` | ||
| PulsarServers []string `yaml:"pulsar_servers"` |
There was a problem hiding this comment.
Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (4)
tools/pika_cdc/conf/cdc.yml (4)
1-2: LGTM. Consider adding a comment about the environment.The Pika server configuration looks good. However, it's using a localhost address, which suggests this might be a development or testing configuration.
Consider adding a comment to clarify if this is intended for development/testing or if it should be updated for production use.
3-6: LGTM. Consider adding more Kafka servers for production use.The Kafka server configuration and the explanatory comment are good. However, for production use, consider the following suggestions:
- Add more Kafka servers to the list for high availability and fault tolerance.
- Use actual hostnames or IP addresses instead of localhost for production environments.
- Consider adding configuration options for Kafka security features (e.g., SSL, SASL) if they will be used in production.
7-8: LGTM. Consider adding more Redis servers and a comment explaining their purpose.The Redis server configuration is straightforward, but could be improved:
Add more Redis servers to the list for high availability and fault tolerance in production environments.
Use actual hostnames or IP addresses instead of localhost for production use.
Add a comment explaining the purpose of Redis in this configuration (e.g., caching, state management).
1-18: Overall, good initial configuration, but needs production-ready adjustments.This configuration file provides a solid foundation for the Pika CDC system. However, several areas could be improved to make it more robust and production-ready:
- Server configurations (Pika, Kafka, Redis) should be adjusted for production environments, including multiple servers for high availability.
- Retry settings should be tuned for better reliability.
- Parallel processing and buffer sizes should be optimized for better performance.
- Additional comments would improve clarity, especially regarding the purpose of each component.
Consider creating separate configuration files for different environments (development, testing, production) to address these concerns effectively.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (3)
- tools/pika_cdc/conf/cdc.yml (1 hunks)
- tools/pika_cdc/conf/conf.go (1 hunks)
- tools/pika_cdc/consumer/kafka.go (1 hunks)
🔇 Additional comments (6)
tools/pika_cdc/conf/cdc.yml (1)
13-15:⚠️ Potential issueConsider optimizing parallel processing and buffer size.
The current configuration might limit performance and throughput:
parallel_thread_size: 1means the system will process messages in a single thread. Consider increasing this value to utilize multiple cores and improve throughput, especially if the system is expected to handle high volumes of data.
buffer_msg_numbers: 10might be too small, potentially leading to backpressure issues if the incoming message rate is high. Consider increasing this value based on your expected message rate and available memory.Example:
parallel_thread_size: 4 # Adjust based on available cores and expected load buffer_msg_numbers: 1000 # Adjust based on expected message rate and available memoryTo help determine appropriate values, you might want to analyze the current message rates and system resources. Here's a script to check for any existing performance metrics or logs:
tools/pika_cdc/conf/conf.go (2)
15-23: LGTM: Well-structured configuration structThe
PikaCdcConfigstruct is well-defined with appropriate fields and YAML tags. It covers essential configuration aspects such as server addresses, retry settings, and performance parameters.
40-49: LGTM: Well-configured logging setupThe logging configuration using logrus is comprehensive and well-structured. It includes full timestamps and caller information, which will be helpful for debugging and monitoring.
tools/pika_cdc/consumer/kafka.go (3)
1-8: LGTM: Package declaration and imports are appropriate.The package name "consumer" and the imported packages are suitable for a Kafka consumer implementation.
25-27: LGTM: Name method is straightforward.The Name method correctly returns the string "Kafka".
9-18: LGTM: Kafka struct definition, but clarify KafkaProtocol.The Kafka struct definition looks good and covers the necessary components for a Kafka consumer. However, the KafkaProtocol type is not defined in this file.
Could you please clarify where the KafkaProtocol type is defined? Run the following script to search for its definition:
✅ Verification successful
Verified: Kafka struct and KafkaProtocol definition
The Kafka struct definition is well-defined, and the KafkaProtocol type is correctly defined in
tools/pika_cdc/consumer/protocol.go.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for KafkaProtocol definition rg --type go "type\s+KafkaProtocol\s+"Length of output: 104
| # retry times while send message failed | ||
| retries : 0 | ||
| # retry interval while send message failed(ms) | ||
| retry_interval: 10 |
There was a problem hiding this comment.
Consider adjusting retry settings for better reliability.
The current retry configuration might lead to message loss and doesn't allow much time for transient issues to resolve:
- Setting
retriesto 0 means no retries will be attempted if sending a message fails. Consider increasing this to a non-zero value (e.g., 3) to improve reliability. - The
retry_intervalof 10ms might be too short for some network issues to resolve. Consider increasing this to a larger value (e.g., 1000ms or 1 second) to allow more time between retry attempts.
Example:
# retry times while send message failed
retries: 3
# retry interval while send message failed(ms)
retry_interval: 1000| package conf | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/sirupsen/logrus" | ||
| "gopkg.in/yaml.v3" | ||
| "io/ioutil" | ||
| "log" | ||
| "os" | ||
| "path" | ||
| "path/filepath" | ||
| "runtime" | ||
| ) |
There was a problem hiding this comment.
Update deprecated ioutil import
The ioutil package is deprecated. Replace it with the os package for file operations.
Apply this diff to update the import:
- "io/ioutil"
+ "os"Make sure to update any usage of ioutil functions to their os counterparts in the rest of the file.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| package conf | |
| import ( | |
| "fmt" | |
| "github.com/sirupsen/logrus" | |
| "gopkg.in/yaml.v3" | |
| "io/ioutil" | |
| "log" | |
| "os" | |
| "path" | |
| "path/filepath" | |
| "runtime" | |
| ) | |
| package conf | |
| import ( | |
| "fmt" | |
| "github.com/sirupsen/logrus" | |
| "gopkg.in/yaml.v3" | |
| "os" | |
| "log" | |
| "path" | |
| "path/filepath" | |
| "runtime" | |
| ) |
tools/pika_cdc/consumer/kafka.go
Outdated
| func NewKafka(server string, retries int, msgChanns map[string]chan []byte) (*Kafka, error) { | ||
| k := &Kafka{} | ||
| k.protocol = KafkaProtocol{} | ||
| k.kafkaConns = make(map[string]*kafka.Conn) | ||
| k.msgChanns = make(map[string]chan []byte) | ||
| for dbname, chann := range msgChanns { | ||
| conn, err := kafka.DialLeader(context.Background(), "tcp", server, dbname, 0) | ||
| if err != nil { | ||
| return k, err | ||
| } else { | ||
| k.kafkaConns[dbname] = conn | ||
| } | ||
| k.msgChanns[dbname] = chann | ||
| } | ||
| k.stopChan = make(chan bool) | ||
| k.retries = retries | ||
| return k, nil | ||
| } |
There was a problem hiding this comment.
Improve error handling and initialization in NewKafka function.
The current implementation has the following issues:
- It doesn't close connections if an error occurs during initialization.
- It doesn't set the 'servers' field of the Kafka struct.
- The 'topics' field is not used.
Consider implementing the following improvements:
func NewKafka(server string, retries int, msgChanns map[string]chan []byte) (*Kafka, error) {
k := &Kafka{
servers: server,
retries: retries,
kafkaConns: make(map[string]*kafka.Conn),
msgChanns: make(map[string]chan []byte),
stopChan: make(chan bool),
protocol: KafkaProtocol{},
}
for dbname, chann := range msgChanns {
conn, err := kafka.DialLeader(context.Background(), "tcp", server, dbname, 0)
if err != nil {
k.Close() // Close any open connections
return nil, fmt.Errorf("failed to connect to Kafka for database %s: %w", dbname, err)
}
k.kafkaConns[dbname] = conn
k.msgChanns[dbname] = chann
}
return k, nil
}Also, consider removing the unused 'topics' field from the Kafka struct if it's not needed.
| func (k *Kafka) Close() error { | ||
| k.Stop() | ||
| for _, conn := range k.kafkaConns { | ||
| if err := conn.Close(); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return nil | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Minor improvement for Close method.
The Close method looks good overall, but it could be improved to ensure all connections are closed even if one fails.
Consider implementing the following improvement:
func (k *Kafka) Close() error {
k.Stop()
var lastErr error
for dbName, conn := range k.kafkaConns {
if err := conn.Close(); err != nil {
lastErr = fmt.Errorf("failed to close Kafka connection for database %s: %w", dbName, err)
}
}
return lastErr
}This change ensures that all connections are attempted to be closed, and returns the last error encountered, if any.
| func (k *Kafka) Run() { | ||
| var wg sync.WaitGroup | ||
| for dbName, chann := range k.msgChanns { | ||
| wg.Add(1) | ||
| go func(dbName string, ch chan []byte) { | ||
| defer wg.Done() | ||
| for { | ||
| select { | ||
| case msg := <-ch: | ||
| k.SendCmdMessage(dbName, msg) | ||
| case <-k.stopChan: | ||
| return | ||
| } | ||
| } | ||
| }(dbName, chann) | ||
| } | ||
| wg.Wait() | ||
| } | ||
| func (k *Kafka) Stop() { | ||
| k.stopChan <- true | ||
| } |
There was a problem hiding this comment.
Improve concurrency handling in Run method.
The Run method has a potential race condition and doesn't use the WaitGroup correctly. The Stop method looks good.
Consider implementing the following improvements in the Run method:
func (k *Kafka) Run() {
k.wg.Add(len(k.msgChanns))
for dbName, chann := range k.msgChanns {
go func(dbName string, ch <-chan []byte) {
defer k.wg.Done()
for {
select {
case msg, ok := <-ch:
if !ok {
return
}
if err := k.SendCmdMessage(dbName, msg); err != nil {
// Consider logging the error or implementing a retry mechanism
}
case <-k.stopChan:
return
}
}
}(dbName, chann)
}
}This change:
- Uses the WaitGroup from the Kafka struct.
- Avoids the race condition by passing dbName and chann as parameters to the goroutine.
- Handles the case where the channel is closed.
- Checks for errors from SendCmdMessage.
Also, consider updating the Stop method to close the stopChan after sending the stop signal:
func (k *Kafka) Stop() {
close(k.stopChan)
k.wg.Wait()
}This ensures all goroutines have a chance to exit before the method returns.
Mixficsol
changed the title
| } | ||
|
|
||
| func (k *Kafka) SendCmdMessage(dbName string, msg []byte) error { | ||
| k.kafkaConns[dbName].Write(k.protocol.ToConsumer(msg)) |
There was a problem hiding this comment.
这里判断是否处于 stop 状态好点。redis 也是类似
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com> feat-cdc:add pika repl send proxy test Signed-off-by: LeeHao <1838249551@qq.com> feat-cdc:add pika repl send proxy test Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Basic incremental synchronization to redis has been completed Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com> a Signed-off-by: LeeHao <1838249551@qq.com> feat-cdc:Use Makefile to build pika cdc Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
Signed-off-by: LeeHao <1838249551@qq.com>
ForestLH
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Actionable comments posted: 21
🧹 Outside diff range and nitpick comments (15)
tools/pika_cdc/pika/cmd.go (2)
3-3: Consider adding documentation and clarifying the struct name.The
Cmdstruct is currently empty, which is fine if it's intended as a placeholder. However, consider the following improvements:
- Add a comment explaining the purpose of this struct and how it fits into the larger CDC context.
- Consider a more specific name like
PikaCmdorCdcCmdto clarify its role.Example:
// PikaCmd represents a command in the Pika CDC system. // It will be used to [brief explanation of its purpose]. type PikaCmd struct{}
1-7: Overall: Good start, but needs further development and documentation.This file provides a basic structure for command handling in the Pika CDC project. While it follows Go syntax, there are several areas for improvement:
- Add package-level documentation explaining the purpose of this package in the CDC context.
- Implement proper error handling for unimplemented methods.
- Consider adding more methods to the
Cmdstruct to flesh out its functionality.- Ensure integration with other components of the CDC system (e.g., the
PikaCdcConfigfromconf.goand theConsumerinterface fromconsumer.go).Next steps:
- Implement the actual command handling logic.
- Add unit tests for the
Cmdstruct and its methods.- Update the README.md with information about the command structure and usage.
tools/pika_cdc/Makefile (3)
1-13: LGTM! Consider adding version constraints for tools.The variable definitions are well-structured and follow good Makefile practices. The use of shell commands for file discovery is efficient.
Consider adding version constraints for the tools (protoc, go) to ensure reproducible builds across different environments. For example:
GO_VERSION := 1.16 PROTOC_VERSION := 3.15.8 GO_BUILD = go$(GO_VERSION) build PROTOC = protoc-$(PROTOC_VERSION)
16-26: LGTM! Consider adding a few enhancements.The main targets are well-defined and logically structured. The use of variables and dependencies is correct.
Consider the following enhancements:
- Add a
testtarget to run Go tests:test: go test ./...
- Make the
buildtarget depend on the Go files to ensure rebuilding when files change:build: $(GO_FILES) $(GO_BUILD) -o $(OUTPUT_BIN)
- Add a
fmttarget to format Go code:fmt: go fmt ./...
- Consider adding a
vettarget for static analysis:vet: go vet ./...These additions would enhance the development workflow and code quality checks.
1-26: Great addition to the project! This Makefile streamlines the build process.This Makefile is a valuable addition to the pika_cdc project. It provides a structured and efficient way to manage the build process, including protocol buffer generation and Go compilation. The use of variables, proper target dependencies, and .PHONY declarations demonstrates good Makefile practices.
The Makefile will significantly improve the development workflow and help maintain consistency across different environments. As the project grows, consider expanding it with additional targets for testing, formatting, and static analysis as suggested earlier.
As the project evolves, consider splitting the Makefile into multiple files (e.g., using
includedirectives) if it becomes too large or if you need to manage multiple related components. This can help with maintainability and organization of build processes for different parts of the project.tools/pika_cdc/README.md (1)
19-19: Improve the "Todo" section heading.Consider the following improvements for the "Todo" section heading:
- Use the hyphenated form "To-do" for better clarity.
- Remove the colon to adhere to Markdown best practices.
Apply this diff to improve the heading:
-## Todo: +## To-do🧰 Tools
🪛 LanguageTool
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
tools/pika_cdc/consumer/protocol.go (1)
1-27: Overall, the protocol implementations are well-structured, but require attention to error handling.The file introduces a clean Protocol interface with RedisProtocol and KafkaProtocol implementations. The design is flexible and follows Go conventions. However, the
Selectmethod in RedisProtocol needs improvement in error handling and database name parsing. Once this issue is addressed, the file will provide a robust foundation for protocol handling in the consumer package.tools/pika_cdc/go.mod (1)
3-3: Consider upgrading to the latest Go version.While Go 1.20 is a stable version, consider upgrading to the latest version (currently 1.22 as of April 2024) to benefit from performance improvements, bug fixes, and new features.
tools/pika_cdc/consumer/redis.go (2)
14-14: Typo in struct field namemsgChanns; consider renaming tomsgChans.The field
msgChannsin theRedisstruct may contain a typo. Renaming it tomsgChanswould improve readability and consistency.Apply this diff to rename the field:
type Redis struct { redisProtocol RedisProtocol conns map[string]net.Conn - msgChanns map[string]chan []byte + msgChans map[string]chan []byte stopChan chan bool }Ensure all references to
msgChannsare updated accordingly throughout the code.
37-39: Simplify the return statement in theNamemethod.The expression
string("Redis")is redundant since "Redis" is already a string. You can simplify it toreturn "Redis".Apply this diff:
func (r *Redis) Name() string { - return string("Redis") + return "Redis" }tools/pika_cdc/pika/server.go (2)
12-21: Consider adding documentation for theServerstruct.The
Serverstruct and its fields could benefit from some inline documentation explaining their purpose and usage. This will improve the code's readability and maintainability.For example:
// Server represents a connection to a Pika server for CDC. type Server struct { // stop is a channel used to signal the server to stop running. stop chan bool // pikaConn is the network connection to the Pika server. pikaConn net.Conn // ... (document other fields similarly) }
1-100: Ensure the code follows Go best practices and style guidelines.Overall, the code looks good and follows most of the Go best practices. However, there are a few minor style and naming suggestions to improve consistency and readability:
Use consistent naming for variables and functions. For example,
buildMsgChanncould be renamed tobuildMsgChannelsfor clarity.Use
camelCasefor local variables and function parameters. For example,dbMetaInfocould be renamed todbMetaInfo.Use
PascalCasefor exported struct fields. For example,writerandreadercould be renamed toWriterandReaderif they need to be exported.Add comments to exported functions and structs to explain their purpose and usage.
These are minor nitpicks and the code is functionally sound as is. Feel free to apply these suggestions as you see fit.
tools/pika_cdc/pika/replprotocol.go (2)
103-103: Opportunity to Optimize Synchronization with GoroutinesThe TODO comment suggests finding ways to optimize using coroutines or goroutines. Implementing concurrency here could improve performance during the synchronization process by handling multiple operations concurrently.
Would you like assistance in implementing this optimization? I can provide guidance or sample code on how to use goroutines to enhance the synchronization mechanism.
138-138: Implement Concurrent Handling of Binlog Sync ResponsesThe TODO comment indicates the need to receive multiple binlog sync responses simultaneously. Utilizing goroutines or channels to handle responses concurrently can improve efficiency and reduce latency.
Would you like help in modifying the code to handle multiple binlog sync responses concurrently? I can assist with restructuring the function to use goroutines for simultaneous processing.
tools/pika_cdc/pika/replprotocol_test.go (1)
392-394: Replace empty infinite loop withselect {}to block efficientlyAn empty infinite loop consumes CPU resources unnecessarily. To block the main goroutine indefinitely without resource consumption, use
select {}.Apply this diff to improve efficiency:
-// never stop as a backend service -for { -} +// Block indefinitely to keep the service running +select {}
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (1)
tools/pika_cdc/go.sumis excluded by!**/*.sum
📒 Files selected for processing (20)
- .gitignore (1 hunks)
- src/pika_inner_message.proto (1 hunks)
- src/rsync_service.proto (1 hunks)
- third/blackwidow (1 hunks)
- third/glog (1 hunks)
- third/pink (1 hunks)
- tools/pika_cdc/Makefile (1 hunks)
- tools/pika_cdc/README.md (1 hunks)
- tools/pika_cdc/conf/cdc.yml (1 hunks)
- tools/pika_cdc/conf/conf.go (1 hunks)
- tools/pika_cdc/consumer/consumer.go (1 hunks)
- tools/pika_cdc/consumer/kafka.go (1 hunks)
- tools/pika_cdc/consumer/protocol.go (1 hunks)
- tools/pika_cdc/consumer/redis.go (1 hunks)
- tools/pika_cdc/go.mod (1 hunks)
- tools/pika_cdc/main.go (1 hunks)
- tools/pika_cdc/pika/cmd.go (1 hunks)
- tools/pika_cdc/pika/replprotocol.go (1 hunks)
- tools/pika_cdc/pika/replprotocol_test.go (1 hunks)
- tools/pika_cdc/pika/server.go (1 hunks)
✅ Files skipped from review due to trivial changes (6)
- .gitignore
- src/pika_inner_message.proto
- src/rsync_service.proto
- third/blackwidow
- third/glog
- third/pink
🧰 Additional context used
🪛 LanguageTool
tools/pika_cdc/README.md
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
tools/pika_cdc/README.md
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
🔇 Additional comments (23)
tools/pika_cdc/pika/cmd.go (2)
1-1: LGTM: Package declaration is correct.The package name "pika" is appropriate and follows Go naming conventions.
5-7:⚠️ Potential issueImprove the Name method implementation and add documentation.
The current implementation of the
Namemethod appears to be a placeholder. Consider the following improvements:
- Add a comment explaining the purpose of this method.
- Instead of returning "unimplemented", consider using a more idiomatic approach for unimplemented methods in Go.
Example:
// Name returns the name of the command. // TODO: Implement proper naming logic. func (c *Cmd) Name() string { panic("Name method not implemented") }This approach will make it clear that the method is not yet implemented and will cause a panic if accidentally called in production code.
To ensure this method is not called anywhere in the codebase before it's properly implemented, run the following script:
tools/pika_cdc/Makefile (1)
14-14: LGTM! Proper use of .PHONY targets.The .PHONY declaration is correct and follows Makefile best practices. It properly declares all the targets that don't produce files of the same name.
tools/pika_cdc/README.md (5)
2-2: Convert the emphasis to a heading.The tool description should be formatted as a heading for better readability and structure.
Apply this diff to convert the emphasis to a heading:
-**A tool for incremental synchronization of pika command** +## A tool for incremental synchronization of pika command🧰 Tools
🪛 Markdownlint
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
1-1: LGTM!The title and additional description provide clear information about the tool's purpose and functionality.
Also applies to: 3-5
6-17: LGTM!The build instructions are clear, comprehensive, and well-formatted. They provide all necessary information for setting up the development environment and building the tool.
20-24: LGTM!The todo list effectively communicates the status of different consumer-side implementations using checkboxes.
1-24: Overall, the README is well-structured and informative.The README provides a clear introduction to the Pika cdc tool, comprehensive build instructions, and a status update on consumer-side implementations. With the suggested minor formatting improvements, it will serve as an excellent guide for developers working with this tool.
🧰 Tools
🪛 LanguageTool
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
tools/pika_cdc/consumer/protocol.go (4)
1-7: LGTM: Package declaration and imports are appropriate.The package name "consumer" aligns with the file's purpose, and the imported packages ("fmt" and "strconv") are relevant to the implemented functionality.
8-11: LGTM: Protocol interface and RedisProtocol struct are well-defined.The Protocol interface with a single
ToConsumermethod provides a clear contract for implementations. The RedisProtocol struct is appropriately named, adhering to Go naming conventions.
23-27: LGTM: KafkaProtocol implementation is correct and consistent.The KafkaProtocol struct and its
ToConsumermethod are correctly implemented. The implementation is consistent with the RedisProtocol'sToConsumermethod, maintaining a uniform approach across different protocols.
13-21:⚠️ Potential issueFix the database name parsing and error handling in the
Selectmethod.The
Selectmethod still has the following issues:
- The database name is assumed to end with a single digit, which may not always be true.
- The error returned by
strconv.Atoiis ignored, potentially leading to unexpected behavior.These issues were previously identified in a past review. Please apply the following fix:
-func (rp RedisProtocol) Select(dbName string) []byte { - db, _ := strconv.Atoi(dbName[len(dbName)-1:]) +func (rp RedisProtocol) Select(dbName string) ([]byte, error) { + db, err := strconv.Atoi(dbName) + if err != nil { + return nil, fmt.Errorf("invalid database name: %s", dbName) + } dbStr := strconv.Itoa(db) msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr) - return []byte(msg) + return []byte(msg), nil }This change will improve error handling and make the function more robust.
tools/pika_cdc/conf/cdc.yml (2)
1-4: 🛠️ Refactor suggestionVerify server configurations and consider using environment variables.
The Pika server configurations look good, but they're currently set to localhost. This might be fine for development, but for production environments, consider using environment variables for more flexibility.
Example of using environment variables:
pika_repl_server: ${PIKA_REPL_SERVER:-127.0.0.1:11221} pika_client_server: ${PIKA_CLIENT_SERVER:-127.0.0.1:9221}This allows easy configuration changes without modifying the file.
11-14:⚠️ Potential issueAdjust retry settings for better reliability.
The current retry configuration might lead to message loss and doesn't allow much time for transient issues to resolve. This issue was previously identified and the recommendation is still valid.
Please consider the following changes:
- Increase
retriesto a non-zero value (e.g., 3) to improve reliability.- Increase
retry_intervalto a larger value (e.g., 1000ms or 1 second) to allow more time between retry attempts.Example:
# retry times while send message failed retries: 3 # retry interval while send message failed(ms) retry_interval: 1000tools/pika_cdc/main.go (2)
3-8: LGTM: Import statements are appropriate.The import statements are concise and relevant to the functionality of the main package. They include necessary logging, configuration, consumer, and pika-related packages.
12-12:⚠️ Potential issueImprove error logging and consider graceful shutdown.
The current error logging doesn't include the actual error message, which was pointed out in previous reviews. Additionally, using
logrus.Fatalimmediately terminates the program, which might not always be the best approach for error handling.
- Update the error logging as suggested in previous reviews:
- logrus.Fatal("failed to connect pika server, {}", err) + logrus.Fatalf("failed to connect pika server: %v", err) - logrus.Fatal("failed to generate consumers, {}", err) + logrus.Fatalf("failed to generate consumers: %v", err)
- Consider implementing a more graceful shutdown mechanism instead of immediately terminating the program. This could involve closing open connections, stopping running goroutines, etc.
Also applies to: 15-15
tools/pika_cdc/consumer/consumer.go (4)
1-5: LGTM: Package declaration and imports are appropriate.The package name "consumer" aligns with the file's purpose, and the import of "pika_cdc/conf" is relevant for accessing the configuration.
7-15: Consumer interface looks good, but Factory struct needs clarification.The Consumer interface is well-defined with clear method signatures. However, the Factory struct is currently empty.
Could you please clarify the intended use of the Factory struct? If it's meant to be implemented later, consider adding a TODO comment. If it's not needed, it might be better to remove it.
17-17: LGTM: GenerateConsumers function signature is well-defined.The function takes appropriate parameters (configuration and message channels) and returns a slice of Consumers along with an error, which is a good practice for error handling.
18-32:⚠️ Potential issueImprove error handling and refactor GenerateConsumers function.
The current implementation has several issues that need to be addressed:
- Error handling is missing for both Kafka and Redis consumer creation.
- The function always returns nil as the error, which is misleading.
- The implementation doesn't incorporate the improvements suggested in previous review comments.
Please consider the following improvements:
- Handle errors returned by
NewKafkaandNewRedis.- Return an error if any consumer creation fails.
- Refactor the function to reduce code duplication between Kafka and Redis consumer creation.
Here's a suggested refactored implementation:
func GenerateConsumers(config conf.PikaCdcConfig, msgChanns map[string]chan []byte) ([]Consumer, error) { var consumers []Consumer // Create Kafka consumers for _, k := range config.KafkaServers { kafka, err := NewKafka(k, config.Retries, msgChanns) if err != nil { return nil, fmt.Errorf("failed to create Kafka consumer: %v", err) } consumers = append(consumers, kafka) } // Create Redis consumers for _, r := range config.RedisServers { redis, err := NewRedis(r, msgChanns) if err != nil { return nil, fmt.Errorf("failed to create Redis consumer: %v", err) } consumers = append(consumers, redis) } return consumers, nil }This refactored version:
- Handles errors from
NewKafkaandNewRedis.- Returns an error if any consumer creation fails.
- Reduces code duplication between Kafka and Redis consumer creation.
Additionally, consider adding a check to ensure at least one consumer is created:
if len(consumers) == 0 { return nil, errors.New("no consumers were created") }This will prevent returning an empty slice of consumers without an error.
tools/pika_cdc/go.mod (2)
1-1: LGTM: Module declaration is correct.The module name "pika_cdc" accurately reflects the project name and follows Go naming conventions.
15-44: 🛠️ Refactor suggestionReview and optimize the dependency tree.
The list of indirect dependencies is extensive. Consider the following actions:
- Review if any indirect dependencies are directly used in your code. If so, move them to the direct dependencies section.
- Check for opportunities to reduce the number of dependencies by consolidating functionality or removing unused features.
- Use tools like
go mod tidyto ensure all dependencies are necessary and up-to-date.- Consider running a security scan on the dependencies to identify any potential vulnerabilities.
tools/pika_cdc/pika/server.go (1)
27-31: The previous review comment about handling potential errors ingetPortis still valid. The error fromstrconv.Atoiis being ignored.
| # For data from one DB of one pika, a separate MQ topic is created, | ||
| # and the name of the topic is the dbname of the pika | ||
| kafka_servers: | ||
| - 127.0.0.1:9092 |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider adding more Kafka servers for high availability.
Currently, only one Kafka server is configured. For production environments, it's recommended to have multiple Kafka servers to ensure high availability and fault tolerance.
Example:
kafka_servers:
- 127.0.0.1:9092
- 127.0.0.1:9093
- 127.0.0.1:9094Ensure to replace these with actual server addresses in your production environment.
| redis_servers: | ||
| - 127.0.0.1:6379 |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider adding more Redis servers for high availability.
Similar to the Kafka configuration, only one Redis server is listed. For production environments, it's recommended to have multiple Redis servers to ensure high availability and fault tolerance.
Example:
redis_servers:
- 127.0.0.1:6379
- 127.0.0.1:6380
- 127.0.0.1:6381Ensure to replace these with actual server addresses in your production environment.
| retries : 0 | ||
| # retry interval while send message failed(ms) | ||
| retry_interval: 10 | ||
| parallel_thread_size: 1 |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Reconsider parallel thread size for potential performance improvement.
The parallel_thread_size is currently set to 1, which means no parallelism. Depending on your system's resources and workload, increasing this value might improve performance.
Consider adjusting this value based on your specific use case and available resources. For example:
parallel_thread_size: 4Make sure to test different values to find the optimal setting for your environment.
| # the size of the cached channel in pika cdc | ||
| buffer_msg_numbers: 10 |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider adjusting buffer size based on expected workload.
The buffer_msg_numbers is set to 10, which might be small depending on your expected message rate and processing speed. A small buffer size could lead to frequent blocking if the consumer can't keep up with the producer.
Consider adjusting this value based on your specific use case and expected workload. For example:
# the size of the cached channel in pika cdc
buffer_msg_numbers: 100Make sure to test different values to find the optimal setting that balances memory usage and performance for your environment.
| func main() { | ||
| if pikaServer, err := pika.New(conf.ConfigInstance.PikaReplServer, conf.ConfigInstance.BufferMsgNumbers); err != nil { | ||
| logrus.Fatal("failed to connect pika server, {}", err) | ||
| } else { | ||
| if consumers, err := consumer.GenerateConsumers(conf.ConfigInstance, pikaServer.MsgChanns); err != nil { | ||
| logrus.Fatal("failed to generate consumers, {}", err) | ||
| } else { | ||
| for _, c := range consumers { | ||
| go c.Run() | ||
| } | ||
| } | ||
| pikaServer.Run() | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider refactoring the main function for better readability.
The current structure with nested if-else statements makes the code harder to read and maintain. Consider refactoring the main function to separate concerns and reduce nesting.
Here's a suggested refactor:
func main() {
pikaServer, err := connectToPikaServer()
if err != nil {
logrus.Fatalf("failed to connect pika server: %v", err)
}
consumers, err := generateConsumers(pikaServer)
if err != nil {
logrus.Fatalf("failed to generate consumers: %v", err)
}
runConsumers(consumers)
pikaServer.Run()
}
func connectToPikaServer() (*pika.Server, error) {
return pika.New(conf.ConfigInstance.PikaReplServer, conf.ConfigInstance.BufferMsgNumbers)
}
func generateConsumers(pikaServer *pika.Server) ([]consumer.Consumer, error) {
return consumer.GenerateConsumers(conf.ConfigInstance, pikaServer.MsgChanns)
}
func runConsumers(consumers []consumer.Consumer) {
for _, c := range consumers {
go c.Run()
}
}This refactoring improves readability by:
- Separating concerns into distinct functions.
- Reducing nesting in the main function.
- Improving error handling clarity.
| func (s *Server) Exit() { | ||
| s.stop <- true | ||
| close(s.stop) | ||
| for _, chann := range s.MsgChanns { | ||
| close(chann) | ||
| } | ||
| } |
There was a problem hiding this comment.
Ensure proper closure of channels in Exit method.
The Exit method closes the stop channel immediately after sending a value to it. This could cause a panic if the Run method is still selecting on the stop channel.
Consider using a more controlled shutdown process, such as using a context.Context for cancellation or ensuring that the stop channel is only closed after the Run method has exited.
select {
case s.stop <- true:
default:
}
// Wait for Run to exit before closing channels| func (s *Server) CreateSyncWithPika() error { | ||
| return s.pikaReplProtocol.GetSyncWithPika() | ||
| } |
There was a problem hiding this comment.
Ensure CreateSyncWithPika handles errors properly.
The CreateSyncWithPika method calls GetSyncWithPika but does not handle the potential error it returns. Ensure that the error is logged or returned to the caller for appropriate handling.
err := s.pikaReplProtocol.GetSyncWithPika()
if err != nil {
logrus.Errorf("error creating sync with Pika: %v", err)
return err
}
return nil| func (repl *ReplProtocol) Ping() string { | ||
| _, err := repl.writer.WriteString("PING\r\n") | ||
| if err != nil { | ||
| logrus.Warn("Error writing to connection:", err) | ||
| return string("") | ||
| } | ||
| repl.writer.Flush() | ||
|
|
||
| resp, err := repl.reader.ReadString('\n') | ||
| if err != nil { | ||
| logrus.Warn("Error reading from connection:", err) | ||
| return string("") | ||
| } | ||
| return resp | ||
| } |
There was a problem hiding this comment.
Improve Error Handling in Ping() Function
In the Ping() function, errors are logged with a warning, and the function returns an empty string when an error occurs. This approach may lead to ambiguity for the caller, who cannot distinguish between an actual empty response and an error condition.
Consider modifying the function to return an error alongside the response. Changing the function signature to return (string, error) allows the caller to handle errors appropriately.
Apply this diff to improve error handling:
-func (repl *ReplProtocol) Ping() string {
+func (repl *ReplProtocol) Ping() (string, error) {
_, err := repl.writer.WriteString("PING\r\n")
if err != nil {
logrus.Warn("Error writing to connection:", err)
- return string("")
+ return "", err
}
repl.writer.Flush()
resp, err := repl.reader.ReadString('\n')
if err != nil {
logrus.Warn("Error reading from connection:", err)
- return string("")
+ return "", err
}
- return resp
+ return resp, nil
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (repl *ReplProtocol) Ping() string { | |
| _, err := repl.writer.WriteString("PING\r\n") | |
| if err != nil { | |
| logrus.Warn("Error writing to connection:", err) | |
| return string("") | |
| } | |
| repl.writer.Flush() | |
| resp, err := repl.reader.ReadString('\n') | |
| if err != nil { | |
| logrus.Warn("Error reading from connection:", err) | |
| return string("") | |
| } | |
| return resp | |
| } | |
| func (repl *ReplProtocol) Ping() (string, error) { | |
| _, err := repl.writer.WriteString("PING\r\n") | |
| if err != nil { | |
| logrus.Warn("Error writing to connection:", err) | |
| return "", err | |
| } | |
| repl.writer.Flush() | |
| resp, err := repl.reader.ReadString('\n') | |
| if err != nil { | |
| logrus.Warn("Error reading from connection:", err) | |
| return "", err | |
| } | |
| return resp, nil | |
| } |
| isFirst := true | ||
| binlogSyncReq := &inner.InnerRequest{ | ||
| Type: &binlogSyncType, | ||
| MetaSync: nil, | ||
| TrySync: nil, | ||
| DbSync: nil, | ||
| BinlogSync: &inner.InnerRequest_BinlogSync{ | ||
| Node: trySync.TrySync.Node, | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| AckRangeStart: startOffset, | ||
| AckRangeEnd: startOffset, | ||
| SessionId: trySyncResp.TrySync.SessionId, | ||
| FirstSend: &isFirst, | ||
| }, | ||
| RemoveSlaveNode: nil, | ||
| ConsensusMeta: nil, | ||
| } | ||
| sendReplReq(conn, binlogSyncReq) | ||
| go func() { | ||
| for { | ||
| binlogSyncResp := getResponse(conn) | ||
| if binlogSyncResp == nil || *binlogSyncResp.Code != inner.StatusCode_kOk || | ||
| *binlogSyncResp.Type != inner.Type_kBinlogSync || binlogSyncResp.BinlogSync == nil { | ||
| logrus.Fatal("get binlog sync response failed") | ||
| } else { | ||
| for _, item := range binlogSyncResp.BinlogSync { | ||
| *binlogSyncReq.BinlogSync.FirstSend = false | ||
| if len(item.Binlog) == 0 { | ||
| *binlogSyncReq.BinlogSync.AckRangeStart.Filenum = 0 | ||
| *binlogSyncReq.BinlogSync.AckRangeStart.Offset = 0 | ||
| logrus.Println("receive binlog response keep alive") | ||
| } else { | ||
| binlogSyncReq.BinlogSync.AckRangeStart = item.BinlogOffset | ||
| binlogSyncReq.BinlogSync.AckRangeEnd = item.BinlogOffset | ||
| if binlogItem, err := DecodeBinlogItem(item.Binlog); err != nil { | ||
| logrus.Fatal(err) | ||
| } else { | ||
| SendRedisData("127.0.0.1:6379", binlogItem.Content) | ||
| } | ||
| } | ||
| sendReplReq(conn, binlogSyncReq) | ||
| } | ||
| } | ||
| } | ||
| }() |
There was a problem hiding this comment.
Address potential data race in goroutine by avoiding shared mutable state
The variable binlogSyncReq is being modified concurrently within a goroutine without synchronization mechanisms. Sharing and modifying variables across goroutines without proper synchronization can lead to data races and unpredictable behavior.
Consider creating a new instance of binlogSyncReq inside the goroutine or using synchronization primitives like channels or mutexes to protect shared access.
| func SendRedisData(addr string, data []byte) (string, error) { | ||
| conn, err := net.Dial("tcp", addr) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to connect to Redis server: %v", err) | ||
| } | ||
| defer conn.Close() | ||
|
|
||
| conn.SetDeadline(time.Now().Add(5 * time.Second)) | ||
|
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||
| _, err = conn.Write(data) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to send data to Redis server: %v", err) | ||
| } | ||
|
|
||
| reader := bufio.NewReader(conn) | ||
| response, err := reader.ReadString('\n') | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to read response from Redis server: %v", err) | ||
| } | ||
|
|
||
| return response, nil | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Use a Redis client library instead of raw TCP connections
The SendRedisData function uses raw TCP connections to communicate with Redis, which can lead to protocol handling issues and increased complexity. It's recommended to use a Redis client library like go-redis to ensure proper handling of the Redis protocol and better error management.
Refactor the function using go-redis:
func SendRedisData(addr string, data []byte) (string, error) {
- conn, err := net.Dial("tcp", addr)
- if err != nil {
- return "", fmt.Errorf("failed to connect to Redis server: %v", err)
- }
- defer conn.Close()
-
- conn.SetDeadline(time.Now().Add(5 * time.Second))
-
- _, err = conn.Write(data)
- if err != nil {
- return "", fmt.Errorf("failed to send data to Redis server: %v", err)
- }
-
- reader := bufio.NewReader(conn)
- response, err := reader.ReadString('\n')
- if err != nil {
- return "", fmt.Errorf("failed to read response from Redis server: %v", err)
- }
-
- return response, nil
+ client := redis.NewClient(&redis.Options{
+ Addr: addr,
+ })
+ defer client.Close()
+
+ cmd := client.Process(context.Background(), redis.NewCmd(context.Background(), string(data)))
+ if cmd.Err() != nil {
+ return "", fmt.Errorf("failed to send data to Redis server: %v", cmd.Err())
+ }
+
+ result, err := cmd.Result()
+ if err != nil {
+ return "", fmt.Errorf("failed to read response from Redis server: %v", err)
+ }
+
+ return fmt.Sprintf("%v", result), nil
}Ensure that data contains valid Redis commands and adjust the implementation accordingly.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func SendRedisData(addr string, data []byte) (string, error) { | |
| conn, err := net.Dial("tcp", addr) | |
| if err != nil { | |
| return "", fmt.Errorf("failed to connect to Redis server: %v", err) | |
| } | |
| defer conn.Close() | |
| conn.SetDeadline(time.Now().Add(5 * time.Second)) | |
| _, err = conn.Write(data) | |
| if err != nil { | |
| return "", fmt.Errorf("failed to send data to Redis server: %v", err) | |
| } | |
| reader := bufio.NewReader(conn) | |
| response, err := reader.ReadString('\n') | |
| if err != nil { | |
| return "", fmt.Errorf("failed to read response from Redis server: %v", err) | |
| } | |
| return response, nil | |
| } | |
| func SendRedisData(addr string, data []byte) (string, error) { | |
| client := redis.NewClient(&redis.Options{ | |
| Addr: addr, | |
| }) | |
| defer client.Close() | |
| cmd := client.Process(context.Background(), redis.NewCmd(context.Background(), string(data))) | |
| if cmd.Err() != nil { | |
| return "", fmt.Errorf("failed to send data to Redis server: %v", cmd.Err()) | |
| } | |
| result, err := cmd.Result() | |
| if err != nil { | |
| return "", fmt.Errorf("failed to read response from Redis server: %v", err) | |
| } | |
| return fmt.Sprintf("%v", result), nil | |
| } |
There was a problem hiding this comment.
Actionable comments posted: 23
🧹 Outside diff range and nitpick comments (15)
tools/pika_cdc/pika/cmd.go (1)
3-3: Consider adding documentation and potential fields to theCmdstruct.While the
Cmdstruct is currently empty, it would be beneficial to:
- Add a comment explaining the purpose and intended use of this struct.
- Consider any fields that might be necessary for command handling in the future.
Example documentation:
// Cmd represents a command in the Pika CDC system. // It is responsible for [brief description of responsibilities]. type Cmd struct { // TODO: Add necessary fields for command handling }tools/pika_cdc/Makefile (4)
1-13: LGTM! Consider adding version constraints for tools.The variable definitions are well-structured and follow good Makefile practices. The use of shell commands and wildcards for file discovery is appropriate.
Consider adding version constraints for the tools (protoc, go) to ensure consistent builds across different environments. For example:
PROTOC = protoc --version 3.15.8 GO_BUILD = go build -mod=vendor
18-22: LGTM! Consider adding a check for protoc installation.The 'proto' and 'build' targets are well-defined and use the correct commands and dependencies.
Consider adding a check for the protoc installation at the beginning of the Makefile to provide a helpful error message if it's missing:
ifeq (,$(shell which protoc)) $(error "protoc is not available please install it") endif
24-26: LGTM! Consider adding removal of generated proto files.The 'clean' target effectively cleans up both Go-related files and the generated binary.
Consider adding the removal of generated proto files to ensure a complete cleanup:
clean: $(GO_CLEAN) rm -f $(OUTPUT_BIN) rm -rf $(PROTO_OUT)
1-26: Great job on the Makefile! It provides a solid foundation for the project.The Makefile is well-structured, follows good practices, and covers all necessary steps for managing the pika_cdc project. It's extensible and can accommodate future additions easily. The use of variables, proper target dependencies, and the inclusion of a clean target demonstrate thoughtful design.
As the project grows, consider:
- Adding a 'test' target for running unit tests.
- Implementing a 'install' target for easy deployment.
- Using conditional variables for different environments (e.g., development vs. production).
tools/pika_cdc/consumer/protocol.go (2)
8-10: Consider a more specific method name forToConsumer.The
ToConsumermethod name is descriptive but could be more specific about its action. Consider renaming it to something likeFormatForConsumerorPrepareForConsumerto better indicate its purpose of preparing or formatting the message for consumption.
1-27: Summary: Improve robustness and specificity of protocol implementations.Overall, the file introduces a good structure for Redis and Kafka protocols. However, there are several areas for improvement:
- Consider renaming the
ToConsumermethod in theProtocolinterface to be more specific about its action.- Reconsider the necessity and implementation of the
ToConsumermethod for bothRedisProtocolandKafkaProtocol.- Fix the
Selectmethod inRedisProtocolto handle database names more robustly and manage potential errors.- Consider adding Kafka-specific handling in the
KafkaProtocolif necessary.Please address these points to improve the overall robustness and clarity of the protocol implementations.
.gitignore (1)
77-77: Consider adding a newline at the end of the file.While not critical, it's generally good practice to end files, including .gitignore, with a newline. This can prevent issues with certain tools and improve file concatenation.
You can add a newline by ensuring there's an empty line at the end of the file:
tools/pika_cdc/pika/proto +tools/pika_cdc/consumer/consumer.go (1)
7-13: LGTM: Well-defined Consumer interface with a suggestion.The Consumer interface provides a clear and comprehensive abstraction for different types of consumers. The method names are descriptive and cover essential operations.
Consider adding comments to describe the purpose of each method, especially for Run() and Stop(), to improve code documentation.
tools/pika_cdc/consumer/redis.go (1)
38-38: Simplify the return statement by removing unnecessary type conversion.The
stringconversion is unnecessary since you're returning a string literal. You can simplify the return statement.Apply this diff to remove the unnecessary conversion:
func (r *Redis) Name() string { - return string("Redis") + return "Redis" }tools/pika_cdc/pika/server.go (1)
23-26: Offer assistance with implementing middleware inUsefunctionThe
Usefunction currently contains a TODO comment and is empty. If middleware is planned for future implementation, I can assist in setting up a placeholder or initial structure.Would you like me to help implement a basic middleware structure for this function?
tools/pika_cdc/pika/replprotocol.go (2)
103-103: Address the TODO: Optimize using goroutinesThere's a TODO comment indicating a potential performance optimization by using goroutines. Implementing concurrent processing can improve efficiency, especially for network operations or IO-bound tasks.
Would you like assistance in refactoring this section to utilize goroutines for better performance? I can help with code examples or open a GitHub issue to track this enhancement.
138-138: Address the TODO: Handle multiple binlog sync responses concurrentlyThe TODO comment suggests receiving multiple binlog sync responses simultaneously. Implementing this can enhance performance by processing responses in parallel.
Would you like assistance in designing or implementing this feature using goroutines? I can provide code samples or open a GitHub issue to help move this forward.
tools/pika_cdc/pika/replprotocol_test.go (2)
68-80: Uncomment or remove unused code inreceiveReplMsgIn the
receiveReplMsgfunction, the line responsible for handling incoming connections is commented out://go handleConnection(conn)As a result, the function accepts connections but does not process them, which might not be the intended behavior. If this code is a placeholder or meant for future implementation, consider adding a
TODOcomment. Otherwise, implement thehandleConnectionfunction or remove the listener if it's not necessary.
420-460: Define magic numbers as constants for clarity inDecodeBinlogItemThe function
DecodeBinlogItemuses magic numbers like34directly in the code, which reduces readability:if len(data) < 34 { return nil, fmt.Errorf("data length is too short") }Consider defining these numbers as named constants to enhance code clarity and maintainability.
Define constants at the beginning of the file:
const FixedHeaderSize = 34Update the code accordingly:
-if len(data) < 34 { +if len(data) < FixedHeaderSize { return nil, fmt.Errorf("data length is too short") }Apply similar changes to other occurrences of
34.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (1)
tools/pika_cdc/go.sumis excluded by!**/*.sum
📒 Files selected for processing (20)
- .gitignore (1 hunks)
- src/pika_inner_message.proto (1 hunks)
- src/rsync_service.proto (1 hunks)
- third/blackwidow (1 hunks)
- third/glog (1 hunks)
- third/pink (1 hunks)
- tools/pika_cdc/Makefile (1 hunks)
- tools/pika_cdc/README.md (1 hunks)
- tools/pika_cdc/conf/cdc.yml (1 hunks)
- tools/pika_cdc/conf/conf.go (1 hunks)
- tools/pika_cdc/consumer/consumer.go (1 hunks)
- tools/pika_cdc/consumer/kafka.go (1 hunks)
- tools/pika_cdc/consumer/protocol.go (1 hunks)
- tools/pika_cdc/consumer/redis.go (1 hunks)
- tools/pika_cdc/go.mod (1 hunks)
- tools/pika_cdc/main.go (1 hunks)
- tools/pika_cdc/pika/cmd.go (1 hunks)
- tools/pika_cdc/pika/replprotocol.go (1 hunks)
- tools/pika_cdc/pika/replprotocol_test.go (1 hunks)
- tools/pika_cdc/pika/server.go (1 hunks)
✅ Files skipped from review due to trivial changes (6)
- src/pika_inner_message.proto
- src/rsync_service.proto
- third/blackwidow
- third/glog
- third/pink
- tools/pika_cdc/go.mod
🧰 Additional context used
🪛 LanguageTool
tools/pika_cdc/README.md
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
tools/pika_cdc/README.md
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
🔇 Additional comments (23)
tools/pika_cdc/pika/cmd.go (1)
1-1: LGTM: Package declaration is appropriate.The package name
pikais consistent with the file path and follows Go naming conventions.tools/pika_cdc/Makefile (1)
14-16: LGTM! Proper use of .PHONY and 'all' target.The .PHONY declaration is correctly used to specify non-file targets. The 'all' target provides a convenient way to run both 'proto' and 'build' steps sequentially.
tools/pika_cdc/consumer/protocol.go (3)
13-15: Reconsider the necessity ofToConsumerfor RedisProtocol.The
ToConsumermethod forRedisProtocolsimply returns the input message without modification. Consider if this method is necessary for Redis, or if it can be removed to simplify the implementation.
16-21: Fix the database name parsing and error handling inSelectmethod.The
Selectmethod still has the following issues:
- The database name is assumed to end with a single digit. This assumption may not always hold true.
- The error returned by
strconv.Atoiis ignored. This can lead to unexpected behavior if the database name does not end with a valid integer.Please apply the fix suggested in the previous review to address these issues:
-func (rp RedisProtocol) Select(dbName string) []byte { - db, _ := strconv.Atoi(dbName[len(dbName)-1:]) +func (rp RedisProtocol) Select(dbName string) ([]byte, error) { + db, err := strconv.Atoi(dbName) + if err != nil { + return nil, fmt.Errorf("invalid database name: %s", dbName) + } dbStr := strconv.Itoa(db) msg := fmt.Sprintf("*2\r\n$6\r\nSELECT\r\n$%d\r\n%s\r\n", len(dbStr), dbStr) - return []byte(msg) + return []byte(msg), nil }
23-27: Reconsider the implementation ofToConsumerfor KafkaProtocol.The
ToConsumermethod forKafkaProtocolsimply returns the input message without modification. Consider if this implementation is sufficient for Kafka's requirements. You might need to handle Kafka-specific message formats or metadata. If no special handling is required, consider removing this method to simplify the implementation.tools/pika_cdc/conf/cdc.yml (3)
11-14:⚠️ Potential issueAdjust retry settings for improved reliability.
The current retry configuration might lead to message loss and doesn't allow much time for transient issues to resolve:
- Setting
retriesto 0 means no retries will be attempted if sending a message fails. Increase this to a non-zero value (e.g., 3) to improve reliability.- The
retry_intervalof 10ms might be too short for some network issues to resolve. Increase this to a larger value (e.g., 1000ms or 1 second) to allow more time between retry attempts.Suggested changes:
# retry times while send message failed retries: 3 # retry interval while send message failed(ms) retry_interval: 1000These adjustments will significantly improve the system's resilience to temporary failures.
16-17: Evaluate buffer size for optimal performance.The current setting of
buffer_msg_numbers: 10might be too small, potentially leading to frequent blocking if the consumer can't keep up with the producer.Consider adjusting this value based on your expected message rate and processing speed. To help determine an appropriate value, you could:
- Run performance tests with different buffer sizes.
- Monitor the system in a staging environment to observe if there's frequent blocking.
Here's a script to check if there are any comments or documentation about the recommended buffer size:
#!/bin/bash # Search for any comments or documentation about buffer_msg_numbers rg -i "buffer_msg_numbers|buffer size|channel size" --type md --type goReview the results to see if there's any guidance on setting this value.
15-15: Reconsider parallel thread size for optimal performance.The current setting of
parallel_thread_size: 1means the system is not utilizing any parallelism. This might limit performance, especially in high-throughput scenarios.Consider adjusting this value based on your specific use case and available resources. To help determine an appropriate value, you could run performance tests with different thread sizes.
Here's a script to check if there are any comments or documentation about the recommended thread size:
Review the results to see if there's any guidance on setting this value.
tools/pika_cdc/main.go (5)
1-8: LGTM: Package declaration and imports are appropriate.The package declaration and imports are well-structured and appropriate for the main entry point of the application.
10-13: Improve error logging as per previous comment.The error logging format needs to be updated for better clarity, as mentioned in a previous review comment. Please apply the following change:
- logrus.Fatal("failed to connect pika server, {}", err) + logrus.Fatalf("failed to connect pika server: %v", err)This change will include the actual error message in the log, providing more useful information for debugging.
14-20: Improve error logging and LGTM for consumer handling.
- The error logging format needs to be updated for better clarity, as mentioned in a previous review comment. Please apply the following change:
- logrus.Fatal("failed to generate consumers, {}", err) + logrus.Fatalf("failed to generate consumers: %v", err)
- The logic for generating consumers and running them concurrently using goroutines is well-implemented and appropriate.
21-23: LGTM: Pika server execution.The call to
pikaServer.Run()at the end of the main function is correct and appropriately placed after setting up the consumers.
1-23: Summary: Main function implementation is solid with minor logging improvements needed.The
main.gofile successfully implements the entry point for the Pika CDC application. It correctly sets up the Pika server, generates consumers, and runs them concurrently. The overall structure and logic are sound.Two minor issues with error logging were identified and should be addressed as per the previous comments. Once these changes are made, the file will be in excellent shape.
Action item:
- Update the error logging format in both instances as suggested in the review comments.
After making these changes, the code will be ready for the next stage of the review process.
.gitignore (1)
77-77: LGTM: New ignore pattern for Pika CDC proto files.The addition of
tools/pika_cdc/pika/prototo the .gitignore file is appropriate. This likely ignores generated protocol buffer files for the new Pika CDC project, which is a good practice to keep generated files out of version control.tools/pika_cdc/consumer/consumer.go (3)
1-5: LGTM: Package declaration and imports are appropriate.The package name "consumer" accurately reflects the content of the file, and the import of "pika_cdc/conf" is likely necessary for the configuration structures used in the GenerateConsumers function.
15-15: Clarify the purpose of the empty Factory struct.The Factory struct is currently empty. If it's intended for future use, consider adding a comment explaining its purpose. If it's not needed, it should be removed to avoid confusion and maintain clean code.
Could you provide more information about the intended use of this struct?
17-32:⚠️ Potential issueImprove error handling and refactor GenerateConsumers function.
The current implementation of GenerateConsumers has a few issues:
- Error handling is missing when creating Kafka and Redis consumers.
- The code structure is repetitive for Kafka and Redis consumer creation.
To address these issues, please implement the suggestions from the previous review comments:
- Handle errors when creating Kafka and Redis consumers.
- Refactor the function to reduce code duplication.
Here's a suggested implementation incorporating both improvements:
func GenerateConsumers(config conf.PikaCdcConfig, msgChanns map[string]chan []byte) ([]Consumer, error) { var consumers []Consumer // Create Kafka consumers for _, k := range config.KafkaServers { kafka, err := NewKafka(k, config.Retries, msgChanns) if err != nil { return nil, fmt.Errorf("failed to create Kafka consumer: %v", err) } consumers = append(consumers, kafka) } // Create Redis consumers for _, r := range config.RedisServers { redis, err := NewRedis(r, msgChanns) if err != nil { return nil, fmt.Errorf("failed to create Redis consumer: %v", err) } consumers = append(consumers, redis) } return consumers, nil }This refactored version:
- Handles errors returned by NewKafka and NewRedis.
- Reduces code duplication by using a similar structure for creating Kafka and Redis consumers.
- Returns an error if any of the consumer creations fail.
Please update the function accordingly to improve its robustness and maintainability.
tools/pika_cdc/conf/conf.go (2)
15-24: LGTM: Well-structured configuration structThe
PikaCdcConfigstruct is well-defined with appropriate fields and YAML tags. This structure will facilitate easy mapping between the configuration file and the application's settings.
41-50: LGTM: Well-configured logging setupThe logging configuration using
logrusis well-implemented. It includes:
- A custom formatter with full timestamps
- Caller information for better traceability
- Output directed to stdout
This setup will greatly aid in debugging and monitoring the application.
tools/pika_cdc/consumer/kafka.go (4)
20-23: Duplicate Comment: Improve error handling inSendCmdMessagemethod
29-45: Duplicate Comment: Improve error handling and initialization inNewKafkafunction
47-55: Duplicate Comment: Minor improvement forClosemethod
56-76: Duplicate Comment: Improve concurrency handling inRunandStopmethods
| func (c *Cmd) Name() string { | ||
| return "unimplemented" | ||
| } |
There was a problem hiding this comment.
Improve the Name method implementation and add documentation.
The current implementation of the Name method can be enhanced:
- Add a comment explaining the purpose of this method.
- Consider returning a more meaningful name or using a constant for the unimplemented state.
- If it's truly unimplemented, consider using
panicor returning an error.
Here's a suggested improvement:
// Name returns the name of the command.
// TODO: Implement proper naming logic
func (c *Cmd) Name() string {
const unimplementedName = "unimplemented"
return unimplementedName
}Alternatively, if it should indicate that it's not implemented:
// Name returns the name of the command.
func (c *Cmd) Name() string {
panic("Name method not implemented")
}| package pika | ||
|
|
||
| type Cmd struct{} | ||
|
|
||
| func (c *Cmd) Name() string { | ||
| return "unimplemented" | ||
| } |
There was a problem hiding this comment.
💡 Codebase verification
Incomplete Implementation of Consumer Interface in Cmd Struct.
The Cmd struct currently implements the Name method by returning "unimplemented". However, to fully comply with the Consumer interface, the following methods need to be implemented:
SendCmdMessage(dbName string, msg []byte) errorClose() errorRun()Stop()
Implementing these methods is essential to ensure that the Cmd struct can be used reliably within the Pika CDC project.
- File:
tools/pika_cdc/pika/cmd.go - Lines: 5-9
🔗 Analysis chain
Overall: Good start, but needs more context and implementation details.
This file introduces a basic structure for command handling in the Pika CDC project. While it's a good starting point, there are several areas for improvement:
- Add a package-level comment explaining the purpose of this package in the context of Pika CDC.
- Implement the
Cmdstruct with necessary fields for command handling. - Provide a more meaningful implementation of the
Namemethod or clearly indicate its unimplemented status. - Consider implementing other methods that might be required for the
Consumerinterface mentioned in the project summary. - Add unit tests to ensure the behavior of the
Cmdstruct and its methods.
These improvements will make the code more robust, maintainable, and aligned with Go best practices.
To better understand the context and requirements, let's check for related files:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Find related files and interfaces
# Check for other files in the pika package
echo "Other files in the pika package:"
fd -e go . tools/pika_cdc/pika
# Check for the Consumer interface
echo "\nConsumer interface definition:"
rg -A 10 "type Consumer interface" tools/pika_cdc
Length of output: 1016
| # Build | ||
| **Make sure the system has protoc installed** | ||
| ```bash | ||
| brew install protobuf | ||
| go install google.golang.org/protobuf/cmd/protoc-gen-go@latest | ||
| go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest | ||
| ``` | ||
|
|
||
| ## Build pika cdc | ||
| ```bash | ||
| make | ||
| ``` |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance the build instructions for clarity and completeness.
- Structure the build instructions more clearly with subsections.
- Provide installation instructions for other operating systems, not just macOS.
- Add more context about what the
makecommand does.
Consider restructuring this section as follows:
## Build Instructions
### Prerequisites
Ensure that `protoc` and related Go packages are installed on your system:
#### macOS
```bash
brew install protobufLinux (Ubuntu/Debian)
sudo apt-get install protobuf-compilerWindows
Download the protoc compiler from the official releases page and add it to your PATH.
Install Go packages
go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latestBuild Pika CDC
Run the following command in the project root directory:
makeThis command will compile the protocol buffers and build the Pika CDC binary.
<!-- This is an auto-generated comment by CodeRabbit -->
| # Pika cdc | ||
| **A tool for incremental synchronization of pika command** | ||
|
|
||
| By imitating a pika slave | ||
|
|
||
| # Build | ||
| **Make sure the system has protoc installed** | ||
| ```bash | ||
| brew install protobuf | ||
| go install google.golang.org/protobuf/cmd/protoc-gen-go@latest | ||
| go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest | ||
| ``` | ||
|
|
||
| ## Build pika cdc | ||
| ```bash | ||
| make | ||
| ``` | ||
|
|
||
| ## Todo: | ||
|
|
||
| Consumer side: | ||
| - [x] **redis** | ||
| - [x] **kafka** Create a topic of the same name for each pika's DB | ||
| - [ ] **bifrost** |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance the README with additional sections for completeness.
Consider adding the following sections to make the README more informative and user-friendly:
- Usage: Provide examples of how to use the Pika CDC tool after building it.
- Configuration: Explain any configuration options or files needed to run the tool.
- Contributing: Add guidelines for contributors, including how to submit issues or pull requests.
- License: Include information about the project's license.
- Contact or Support: Provide information on how users can get help or contact the maintainers.
Here's a suggested structure for these additional sections:
## Usage
Explain how to use the Pika CDC tool, including command-line options and examples.
## Configuration
Describe any configuration files or environment variables needed to run the tool.
## Contributing
We welcome contributions! Please follow these steps to contribute:
1. Fork the repository
2. Create a new branch
3. Make your changes
4. Submit a pull request
For more details, see our [Contributing Guidelines](CONTRIBUTING.md).
## License
This project is licensed under the [MIT License](LICENSE).
## Support
If you encounter any issues or have questions, please [open an issue](https://github.com/your-repo/issues) on our GitHub repository.Remember to create the necessary files (CONTRIBUTING.md, LICENSE) and update the links accordingly.
🧰 Tools
🪛 LanguageTool
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
2-2: null
Emphasis used instead of a heading(MD036, no-emphasis-as-heading)
| ## Todo: | ||
|
|
||
| Consumer side: | ||
| - [x] **redis** | ||
| - [x] **kafka** Create a topic of the same name for each pika's DB | ||
| - [ ] **bifrost** |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Refine the To-Do section for better clarity and consistency.
- Correct the spelling and formatting of "Todo" to "To-Do".
- Standardize the format of list items for consistency.
- Consider adding brief descriptions or links to issues for each item.
Apply this diff to implement the suggested changes:
-## Todo:
+## To-Do
Consumer side:
-- [x] **redis**
-- [x] **kafka** Create a topic of the same name for each pika's DB
-- [ ] **bifrost**
+- [x] **Redis**: Implement Redis consumer (PR #XXXX)
+- [x] **Kafka**: Implement Kafka consumer
+ - Create a topic of the same name for each Pika DB
+- [ ] **Bifrost**: Implement Bifrost consumer (Issue #YYYY)Replace #XXXX and #YYYY with actual PR and issue numbers if available.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| ## Todo: | |
| Consumer side: | |
| - [x] **redis** | |
| - [x] **kafka** Create a topic of the same name for each pika's DB | |
| - [ ] **bifrost** | |
| ## To-Do | |
| Consumer side: | |
| - [x] **Redis**: Implement Redis consumer (PR #XXXX) | |
| - [x] **Kafka**: Implement Kafka consumer | |
| - Create a topic of the same name for each Pika DB | |
| - [ ] **Bifrost**: Implement Bifrost consumer (Issue #YYYY) |
🧰 Tools
🪛 LanguageTool
[grammar] ~19-~19: It appears that a hyphen is missing in the noun “To-do” (= task) or did you mean the verb “to do”?
Context: ... ## Build pika cdcbash make## Todo: Consumer side: - [x] redis - [x]...(TO_DO_HYPHEN)
🪛 Markdownlint
19-19: Punctuation: ':'
Trailing punctuation in heading(MD026, no-trailing-punctuation)
| func (repl *ReplProtocol) Ping() string { | ||
| _, err := repl.writer.WriteString("PING\r\n") | ||
| if err != nil { | ||
| logrus.Warn("Error writing to connection:", err) | ||
| return string("") | ||
| } | ||
| repl.writer.Flush() | ||
|
|
||
| resp, err := repl.reader.ReadString('\n') | ||
| if err != nil { | ||
| logrus.Warn("Error reading from connection:", err) | ||
| return string("") | ||
| } | ||
| return resp | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider returning an error in the Ping method
In the Ping method, errors are logged, and an empty string is returned upon failure. This can make it difficult for callers to differentiate between an empty response and an error.
Modify the function signature to return an error alongside the response:
-func (repl *ReplProtocol) Ping() string {
+func (repl *ReplProtocol) Ping() (string, error) {
_, err := repl.writer.WriteString("PING\r\n")
if err != nil {
logrus.Warn("Error writing to connection:", err)
- return string("")
+ return "", err
}
repl.writer.Flush()
resp, err := repl.reader.ReadString('\n')
if err != nil {
logrus.Warn("Error reading from connection:", err)
- return string("")
+ return "", err
}
- return resp
+ return resp, nil
}This change allows the caller to handle errors more effectively.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| func (repl *ReplProtocol) Ping() string { | |
| _, err := repl.writer.WriteString("PING\r\n") | |
| if err != nil { | |
| logrus.Warn("Error writing to connection:", err) | |
| return string("") | |
| } | |
| repl.writer.Flush() | |
| resp, err := repl.reader.ReadString('\n') | |
| if err != nil { | |
| logrus.Warn("Error reading from connection:", err) | |
| return string("") | |
| } | |
| return resp | |
| } | |
| func (repl *ReplProtocol) Ping() (string, error) { | |
| _, err := repl.writer.WriteString("PING\r\n") | |
| if err != nil { | |
| logrus.Warn("Error writing to connection:", err) | |
| return "", err | |
| } | |
| repl.writer.Flush() | |
| resp, err := repl.reader.ReadString('\n') | |
| if err != nil { | |
| logrus.Warn("Error reading from connection:", err) | |
| return "", err | |
| } | |
| return resp, nil | |
| } |
| func (repl *ReplProtocol) sendReplReq(request *inner.InnerRequest) error { | ||
| msg, err := proto.Marshal(request) | ||
| if err != nil { | ||
| logrus.Fatal("Error Marshal:", err) | ||
| } | ||
|
|
||
| pikaTag := []byte(repl.buildInternalTag(msg)) | ||
| allBytes := append(pikaTag, msg...) | ||
| _, err = repl.writer.Write(allBytes) | ||
| if err != nil { | ||
| logrus.Fatal("Error writing to server:", err) | ||
| } | ||
| repl.writer.Flush() | ||
| return nil | ||
| } |
There was a problem hiding this comment.
Handle errors from repl.writer.Flush() in sendReplReq
The call to repl.writer.Flush() does not check for errors. Failing to handle a flush error might lead to unnoticed write failures.
Update the code to handle the potential error:
repl.writer.Flush()
+ if err := repl.writer.Flush(); err != nil {
+ return fmt.Errorf("error flushing writer: %v", err)
+ }
return nilThis ensures that any errors during flushing are appropriately handled.
Committable suggestion was skipped due to low confidence.
| for { | ||
| } |
There was a problem hiding this comment.
Prevent high CPU usage in infinite loop
The infinite loop at the end of TestGetIncrementalSync lacks a sleep or blocking operation, which can lead to high CPU usage:
for {
}Consider adding a sleep or a channel to prevent busy-waiting.
Apply this diff to add a sleep:
for {
+ time.Sleep(1 * time.Second)
}| func SendRedisData(addr string, data []byte) (string, error) { | ||
| conn, err := net.Dial("tcp", addr) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to connect to Redis server: %v", err) | ||
| } | ||
| defer conn.Close() | ||
|
|
||
| conn.SetDeadline(time.Now().Add(5 * time.Second)) | ||
|
|
||
| _, err = conn.Write(data) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to send data to Redis server: %v", err) | ||
| } | ||
|
|
||
| reader := bufio.NewReader(conn) | ||
| response, err := reader.ReadString('\n') | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to read response from Redis server: %v", err) | ||
| } | ||
|
|
||
| return response, nil | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Use Redis client library instead of raw TCP connections in SendRedisData
The SendRedisData function uses a raw TCP connection to communicate with Redis, manually handling the RESP protocol. This approach can lead to errors and is less efficient:
conn, err := net.Dial("tcp", addr)
// ...
_, err = conn.Write(data)
// ...
response, err := reader.ReadString('\n')Consider using the Redis client library to handle connections and communication, which provides robust handling of the RESP protocol and simplifies the code.
Refactor the function to use the Redis client library:
-func SendRedisData(addr string, data []byte) (string, error) {
- conn, err := net.Dial("tcp", addr)
- if err != nil {
- return "", fmt.Errorf("failed to connect to Redis server: %v", err)
- }
- defer conn.Close()
-
- conn.SetDeadline(time.Now().Add(5 * time.Second))
-
- _, err = conn.Write(data)
- if err != nil {
- return "", fmt.Errorf("failed to send data to Redis server: %v", err)
- }
-
- reader := bufio.NewReader(conn)
- response, err := reader.ReadString('\n')
- if err != nil {
- return "", fmt.Errorf("failed to read response from Redis server: %v", err)
- }
-
- return response, nil
+func SendRedisData(addr string, data []byte) (interface{}, error) {
+ client := redis.NewClient(&redis.Options{
+ Addr: addr,
+ })
+ defer client.Close()
+
+ // Assuming 'data' contains a valid Redis command in bytes
+ cmd := string(data)
+ result, err := client.Do(context.Background(), cmd).Result()
+ if err != nil {
+ return nil, fmt.Errorf("failed to execute command on Redis server: %v", err)
+ }
+ return result, nil
}Ensure that the data variable contains valid Redis commands as strings. This change leverages the Redis client library for better reliability and simplicity.
| func TestGetOffsetFromMaster(t *testing.T) { | ||
| ip := "127.0.0.1" | ||
| listener, e := net.Listen("tcp", ":0") | ||
| if e != nil { | ||
| os.Exit(1) | ||
| } | ||
| selfPort := getPort(listener.Addr().String()) | ||
| conn, err := sendMetaSyncRequest(nil) | ||
| if err != nil { | ||
| logrus.Fatal("Failed to sendMetaSyncRequest") | ||
| } | ||
| metaResp := getResponse(conn) | ||
| trySyncType := inner.Type_kTrySync | ||
| replDBs := metaResp.MetaSync.DbsInfo | ||
| var fileNum uint32 = 1 | ||
| var offset uint64 = 0 | ||
| for _, db := range replDBs { | ||
| slotId := uint32(*db.SlotNum) | ||
| trySync := &inner.InnerRequest{ | ||
| Type: &trySyncType, | ||
| TrySync: &inner.InnerRequest_TrySync{ | ||
| Node: &inner.Node{ | ||
| Ip: &ip, | ||
| Port: &selfPort, | ||
| }, | ||
| Slot: &inner.Slot{ | ||
| DbName: db.DbName, | ||
| SlotId: &slotId, | ||
| }, | ||
| BinlogOffset: &inner.BinlogOffset{ | ||
| Filenum: &fileNum, | ||
| Offset: &offset, | ||
| Term: nil, | ||
| Index: nil, | ||
| }, | ||
| }, | ||
| ConsensusMeta: nil, | ||
| } | ||
| _, err = sendReplReq(conn, trySync) | ||
| if err != nil { | ||
| logrus.Fatal("Failed to send TrySync Msg", err) | ||
| } | ||
| trySyncResp := getResponse(conn) | ||
| if trySyncResp == nil || *trySyncResp.Code != inner.StatusCode_kOk { | ||
| logrus.Fatal("Failed to get TrySync Response Msg", err) | ||
| } | ||
| trySync.TrySync.BinlogOffset = trySyncResp.TrySync.GetBinlogOffset() | ||
| logrus.Println("get offset:", trySync.TrySync.BinlogOffset) | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Refactor duplicated code in TestGetOffsetFromMaster and TestSendDbSyncReqMsg
The functions TestGetOffsetFromMaster and TestSendDbSyncReqMsg contain duplicated code related to:
- Establishing a listener and obtaining the local IP and port.
- Preparing and sending the
MetaSyncrequest. - Processing the
MetaSyncresponse.
Extract common code into helper functions:
-
Create a function to set up the listener and retrieve IP and port:
func setupListener() (net.Listener, string, uint16, error) { listener, err := net.Listen("tcp", ":0") if err != nil { return nil, "", 0, err } ip := getIP(listener.Addr().String()) port := getPort(listener.Addr().String()) return listener, ip, port, nil }
-
Create a function to send
MetaSyncrequests:func sendMetaSync(ip string, port uint16) (*inner.InnerResponse, net.Conn, error) { conn, err := sendMetaSyncRequest(nil) if err != nil { return nil, nil, err } metaResp := getResponse(conn) if metaResp == nil { return nil, nil, fmt.Errorf("failed to get metaResp") } return metaResp, conn, nil }
Update the test functions to use these helpers, reducing code duplication and improving readability.
luky116
merged commit 995cd77
into
OpenAtomFoundation:opss-pika-cdc
#2820
Summary by CodeRabbit
Summary by CodeRabbit
New Features
Consumerinterface and multiple consumer types for enhanced messaging handling.ReplProtocolfor Pika database replication, facilitating data synchronization.Bug Fixes
Documentation
README.mdand test files for better understanding and usage of the new features.Tests