Changed expected datatype of various options to number:

`auto_commit_interval_ms`, `connections_max_idle_ms`, `fetch_max_bytes`, `fetch_max_wait_ms`,
`fetch_min_bytes`, `heartbeat_interval_ms`, `max_partition_fetch_bytes`, `max_poll_interval_ms`,
`max_poll_records`, `metadata_max_age_ms`, `receive_buffer_bytes`, `reconnect_backoff_ms`,
`request_timeout_ms`, `retry_backoff_ms`, `send_buffer_bytes`, `session_timeout_ms`

CHANGELOG.md

@@ -1,3 +1,11 @@
+## 10.0.0
+  - Changed expected datatype of various options to number:
+    `auto_commit_interval_ms`, `connections_max_idle_ms`, `fetch_max_bytes`, `fetch_max_wait_ms`, 
+    `fetch_min_bytes`, `heartbeat_interval_ms`, `max_partition_fetch_bytes`, `max_poll_interval_ms`, 
+    `max_poll_records`, `metadata_max_age_ms`, `receive_buffer_bytes`, `reconnect_backoff_ms`, 
+    `request_timeout_ms`, `retry_backoff_ms`, `send_buffer_bytes`, `session_timeout_ms`
+    [#309](https://github.com/logstash-plugins/logstash-input-kafka/pull/309)
+
 ## 9.0.0
   - Removed obsolete `ssl` option
 

docs/index.asciidoc

@@ -77,39 +77,39 @@ https://kafka.apache.org/documentation for more details.
 [cols="<,<,<",options="header",]
 |=======================================================================
 |Setting |Input type|Required
-| <<plugins-{type}s-{plugin}-auto_commit_interval_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-auto_commit_interval_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-auto_offset_reset>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-bootstrap_servers>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-check_crcs>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-client_id>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-connections_max_idle_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-connections_max_idle_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-consumer_threads>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-decorate_events>> |<<boolean,boolean>>|No
 | <<plugins-{type}s-{plugin}-enable_auto_commit>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-exclude_internal_topics>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-fetch_max_bytes>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-fetch_max_wait_ms>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-fetch_min_bytes>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-fetch_max_bytes>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-fetch_max_wait_ms>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-fetch_min_bytes>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-group_id>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-heartbeat_interval_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-heartbeat_interval_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-jaas_path>> |a valid filesystem path|No
 | <<plugins-{type}s-{plugin}-kerberos_config>> |a valid filesystem path|No
 | <<plugins-{type}s-{plugin}-key_deserializer_class>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-max_partition_fetch_bytes>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-max_poll_interval_ms>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-max_poll_records>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-metadata_max_age_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-max_partition_fetch_bytes>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-max_poll_interval_ms>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-max_poll_records>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-metadata_max_age_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-partition_assignment_strategy>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-poll_timeout_ms>> |<<number,number>>|No
-| <<plugins-{type}s-{plugin}-receive_buffer_bytes>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-reconnect_backoff_ms>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-request_timeout_ms>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-retry_backoff_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-receive_buffer_bytes>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-reconnect_backoff_ms>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-request_timeout_ms>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-retry_backoff_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-sasl_kerberos_service_name>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-sasl_mechanism>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-security_protocol>> |<<string,string>>, one of `["PLAINTEXT", "SSL", "SASL_PLAINTEXT", "SASL_SSL"]`|No
-| <<plugins-{type}s-{plugin}-send_buffer_bytes>> |<<string,string>>|No
-| <<plugins-{type}s-{plugin}-session_timeout_ms>> |<<string,string>>|No
+| <<plugins-{type}s-{plugin}-send_buffer_bytes>> |<<number,number>>|No
+| <<plugins-{type}s-{plugin}-session_timeout_ms>> |<<number,number>>|No
 | <<plugins-{type}s-{plugin}-ssl_endpoint_identification_algorithm>> |<<string,string>>|No
 | <<plugins-{type}s-{plugin}-ssl_key_password>> |<<password,password>>|No
 | <<plugins-{type}s-{plugin}-ssl_keystore_location>> |a valid filesystem path|No
@@ -131,8 +131,8 @@ input plugins.
 [id="plugins-{type}s-{plugin}-auto_commit_interval_ms"]
 ===== `auto_commit_interval_ms` 
 
-  * Value type is <<string,string>>
-  * Default value is `"5000"`
+  * Value type is <<number,number>>
+  * Default value is `5000`
 
 The frequency in milliseconds that the consumer offsets are committed to Kafka.
 
@@ -184,7 +184,7 @@ a logical application name to be included.
 [id="plugins-{type}s-{plugin}-connections_max_idle_ms"]
 ===== `connections_max_idle_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 Close idle connections after the number of milliseconds specified by this config.
@@ -235,7 +235,7 @@ If set to true the only way to receive records from an internal topic is subscri
 [id="plugins-{type}s-{plugin}-fetch_max_bytes"]
 ===== `fetch_max_bytes` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The maximum amount of data the server should return for a fetch request. This is not an 
@@ -245,7 +245,7 @@ than this value, the message will still be returned to ensure that the consumer
 [id="plugins-{type}s-{plugin}-fetch_max_wait_ms"]
 ===== `fetch_max_wait_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The maximum amount of time the server will block before answering the fetch request if
@@ -255,7 +255,7 @@ should be less than or equal to the timeout used in `poll_timeout_ms`
 [id="plugins-{type}s-{plugin}-fetch_min_bytes"]
 ===== `fetch_min_bytes` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The minimum amount of data the server should return for a fetch request. If insufficient
@@ -275,7 +275,7 @@ Logstash instances with the same `group_id`
 [id="plugins-{type}s-{plugin}-heartbeat_interval_ms"]
 ===== `heartbeat_interval_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The expected time between heartbeats to the consumer coordinator. Heartbeats are used to ensure 
@@ -326,7 +326,7 @@ Java Class used to deserialize the record's key
 [id="plugins-{type}s-{plugin}-max_partition_fetch_bytes"]
 ===== `max_partition_fetch_bytes` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The maximum amount of data per-partition the server will return. The maximum total memory used for a
@@ -338,7 +338,7 @@ to fetch a large message on a certain partition.
 [id="plugins-{type}s-{plugin}-max_poll_interval_ms"]
 ===== `max_poll_interval_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The maximum delay between invocations of poll() when using consumer group management. This places 
@@ -350,15 +350,15 @@ The value of the configuration `request_timeout_ms` must always be larger than m
 [id="plugins-{type}s-{plugin}-max_poll_records"]
 ===== `max_poll_records` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The maximum number of records returned in a single call to poll().
 
 [id="plugins-{type}s-{plugin}-metadata_max_age_ms"]
 ===== `metadata_max_age_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The period of time in milliseconds after which we force a refresh of metadata even if
@@ -386,15 +386,15 @@ Time kafka consumer will wait to receive new messages from topics
 [id="plugins-{type}s-{plugin}-receive_buffer_bytes"]
 ===== `receive_buffer_bytes` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The size of the TCP receive buffer (SO_RCVBUF) to use when reading data.
 
 [id="plugins-{type}s-{plugin}-reconnect_backoff_ms"]
 ===== `reconnect_backoff_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The amount of time to wait before attempting to reconnect to a given host.
@@ -404,7 +404,7 @@ This backoff applies to all requests sent by the consumer to the broker.
 [id="plugins-{type}s-{plugin}-request_timeout_ms"]
 ===== `request_timeout_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The configuration controls the maximum amount of time the client will wait
@@ -415,7 +415,7 @@ retries are exhausted.
 [id="plugins-{type}s-{plugin}-retry_backoff_ms"]
 ===== `retry_backoff_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The amount of time to wait before attempting to retry a failed fetch request
@@ -451,15 +451,15 @@ Security protocol to use, which can be either of PLAINTEXT,SSL,SASL_PLAINTEXT,SA
 [id="plugins-{type}s-{plugin}-send_buffer_bytes"]
 ===== `send_buffer_bytes` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The size of the TCP send buffer (SO_SNDBUF) to use when sending data
 
 [id="plugins-{type}s-{plugin}-session_timeout_ms"]
 ===== `session_timeout_ms` 
 
-  * Value type is <<string,string>>
+  * Value type is <<number,number>>
   * There is no default value for this setting.
 
 The timeout after which, if the `poll_timeout_ms` is not invoked, the consumer is marked dead

lib/logstash/inputs/kafka.rb

@@ -53,7 +53,7 @@ class LogStash::Inputs::Kafka < LogStash::Inputs::Base
   default :codec, 'plain'
 
   # The frequency in milliseconds that the consumer offsets are committed to Kafka.
-  config :auto_commit_interval_ms, :validate => :string, :default => "5000"
+  config :auto_commit_interval_ms, :validate => :number, :default => 5000
   # What to do when there is no initial offset in Kafka or if an offset is out of range:
   #
   # * earliest: automatically reset the offset to the earliest offset
@@ -76,7 +76,7 @@ class LogStash::Inputs::Kafka < LogStash::Inputs::Base
   # a logical application name to be included.
   config :client_id, :validate => :string, :default => "logstash"
   # Close idle connections after the number of milliseconds specified by this config.
-  config :connections_max_idle_ms, :validate => :string
+  config :connections_max_idle_ms, :validate => :number
   # Ideally you should have as many threads as the number of partitions for a perfect
   # balance — more threads than partitions means that some threads will be idle
   config :consumer_threads, :validate => :number, :default => 1
@@ -90,15 +90,15 @@ class LogStash::Inputs::Kafka < LogStash::Inputs::Base
   # The maximum amount of data the server should return for a fetch request. This is not an 
   # absolute maximum, if the first message in the first non-empty partition of the fetch is larger 
   # than this value, the message will still be returned to ensure that the consumer can make progress.
-  config :fetch_max_bytes, :validate => :string
+  config :fetch_max_bytes, :validate => :number
   # The maximum amount of time the server will block before answering the fetch request if
   # there isn't sufficient data to immediately satisfy `fetch_min_bytes`. This
   # should be less than or equal to the timeout used in `poll_timeout_ms`
-  config :fetch_max_wait_ms, :validate => :string
+  config :fetch_max_wait_ms, :validate => :number
   # The minimum amount of data the server should return for a fetch request. If insufficient
   # data is available the request will wait for that much data to accumulate
   # before answering the request.
-  config :fetch_min_bytes, :validate => :string
+  config :fetch_min_bytes, :validate => :number
   # The identifier of the group this consumer belongs to. Consumer group is a single logical subscriber
   # that happens to be made up of multiple processors. Messages in a topic will be distributed to all
   # Logstash instances with the same `group_id`
@@ -108,48 +108,48 @@ class LogStash::Inputs::Kafka < LogStash::Inputs::Base
   # consumers join or leave the group. The value must be set lower than
   # `session.timeout.ms`, but typically should be set no higher than 1/3 of that value.
   # It can be adjusted even lower to control the expected time for normal rebalances.
-  config :heartbeat_interval_ms, :validate => :string
+  config :heartbeat_interval_ms, :validate => :number
   # Java Class used to deserialize the record's key
   config :key_deserializer_class, :validate => :string, :default => "org.apache.kafka.common.serialization.StringDeserializer"
   # The maximum delay between invocations of poll() when using consumer group management. This places 
   # an upper bound on the amount of time that the consumer can be idle before fetching more records. 
   # If poll() is not called before expiration of this timeout, then the consumer is considered failed and 
   # the group will rebalance in order to reassign the partitions to another member.
   # The value of the configuration `request_timeout_ms` must always be larger than max_poll_interval_ms
-  config :max_poll_interval_ms, :validate => :string
+  config :max_poll_interval_ms, :validate => :number
   # The maximum amount of data per-partition the server will return. The maximum total memory used for a
   # request will be <code>#partitions * max.partition.fetch.bytes</code>. This size must be at least
   # as large as the maximum message size the server allows or else it is possible for the producer to
   # send messages larger than the consumer can fetch. If that happens, the consumer can get stuck trying
   # to fetch a large message on a certain partition.
-  config :max_partition_fetch_bytes, :validate => :string
+  config :max_partition_fetch_bytes, :validate => :number
   # The maximum number of records returned in a single call to poll().
-  config :max_poll_records, :validate => :string
+  config :max_poll_records, :validate => :number
   # The period of time in milliseconds after which we force a refresh of metadata even if
   # we haven't seen any partition leadership changes to proactively discover any new brokers or partitions
-  config :metadata_max_age_ms, :validate => :string
+  config :metadata_max_age_ms, :validate => :number
   # The class name of the partition assignment strategy that the client will use to distribute
   # partition ownership amongst consumer instances
   config :partition_assignment_strategy, :validate => :string
   # The size of the TCP receive buffer (SO_RCVBUF) to use when reading data.
-  config :receive_buffer_bytes, :validate => :string
+  config :receive_buffer_bytes, :validate => :number
   # The amount of time to wait before attempting to reconnect to a given host.
   # This avoids repeatedly connecting to a host in a tight loop.
   # This backoff applies to all requests sent by the consumer to the broker.
-  config :reconnect_backoff_ms, :validate => :string
+  config :reconnect_backoff_ms, :validate => :number
   # The configuration controls the maximum amount of time the client will wait
   # for the response of a request. If the response is not received before the timeout
   # elapses the client will resend the request if necessary or fail the request if
   # retries are exhausted.
-  config :request_timeout_ms, :validate => :string
+  config :request_timeout_ms, :validate => :number
   # The amount of time to wait before attempting to retry a failed fetch request
   # to a given topic partition. This avoids repeated fetching-and-failing in a tight loop.
-  config :retry_backoff_ms, :validate => :string
+  config :retry_backoff_ms, :validate => :number
   # The size of the TCP send buffer (SO_SNDBUF) to use when sending data
-  config :send_buffer_bytes, :validate => :string
+  config :send_buffer_bytes, :validate => :number
   # The timeout after which, if the `poll_timeout_ms` is not invoked, the consumer is marked dead
   # and a rebalance operation is triggered for the group identified by `group_id`
-  config :session_timeout_ms, :validate => :string
+  config :session_timeout_ms, :validate => :number
   # Java Class used to deserialize the record's value
   config :value_deserializer_class, :validate => :string, :default => "org.apache.kafka.common.serialization.StringDeserializer"
   # A list of topics to subscribe to, defaults to ["logstash"].

logstash-input-kafka.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name            = 'logstash-input-kafka'
-  s.version         = '9.0.0'
+  s.version         = '10.0.0'
   s.licenses        = ['Apache-2.0']
   s.summary         = "Reads events from a Kafka topic"
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"