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extract framing from RelpFrame to FrameClock (#186)
* extract framing from RelpFrame to FrameClock * give private methods of RelpReadImpl better names: innerLoop -> attemptFrameCompletion, processFrame -> delegateFrame * remove left over comment
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123 changes: 123 additions & 0 deletions
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src/main/java/com/teragrep/rlp_03/frame/FrameClock.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| /* | ||
| * Java Reliable Event Logging Protocol Library Server Implementation RLP-03 | ||
| * Copyright (C) 2021-2024 Suomen Kanuuna Oy | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| * | ||
| * | ||
| * Additional permission under GNU Affero General Public License version 3 | ||
| * section 7 | ||
| * | ||
| * If you modify this Program, or any covered work, by linking or combining it | ||
| * with other code, such other code is not for that reason alone subject to any | ||
| * of the requirements of the GNU Affero GPL version 3 as long as this Program | ||
| * is the same Program as licensed from Suomen Kanuuna Oy without any additional | ||
| * modifications. | ||
| * | ||
| * Supplemented terms under GNU Affero General Public License version 3 | ||
| * section 7 | ||
| * | ||
| * Origin of the software must be attributed to Suomen Kanuuna Oy. Any modified | ||
| * versions must be marked as "Modified version of" The Program. | ||
| * | ||
| * Names of the licensors and authors may not be used for publicity purposes. | ||
| * | ||
| * No rights are granted for use of trade names, trademarks, or service marks | ||
| * which are in The Program if any. | ||
| * | ||
| * Licensee must indemnify licensors and authors for any liability that these | ||
| * contractual assumptions impose on licensors and authors. | ||
| * | ||
| * To the extent this program is licensed as part of the Commercial versions of | ||
| * Teragrep, the applicable Commercial License may apply to this file if you as | ||
| * a licensee so wish it. | ||
| */ | ||
| package com.teragrep.rlp_03.frame; | ||
|
|
||
| import com.teragrep.rlp_03.frame.fragment.Fragment; | ||
| import com.teragrep.rlp_03.frame.fragment.FragmentImpl; | ||
| import com.teragrep.rlp_03.frame.fragment.FragmentStub; | ||
| import com.teragrep.rlp_03.frame.function.*; | ||
|
|
||
| import java.nio.ByteBuffer; | ||
|
|
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| public class FrameClock { | ||
|
|
||
| private final RelpFrame relpFrameStub; | ||
|
|
||
| private Fragment txn; | ||
| private Fragment command; | ||
| private Fragment payloadLength; | ||
| private Fragment payload; | ||
| private Fragment endOfTransfer; | ||
|
|
||
| public FrameClock() { | ||
| this.relpFrameStub = new RelpFrameStub(); | ||
| clear(); | ||
| } | ||
|
|
||
| private void clear() { | ||
| this.txn = new FragmentImpl(new TransactionFunction()); | ||
| this.command = new FragmentImpl(new CommandFunction()); | ||
| this.payloadLength = new FragmentImpl(new PayloadLengthFunction()); | ||
| this.payload = new FragmentStub(); | ||
| this.endOfTransfer = new FragmentImpl(new EndOfTransferFunction()); | ||
| } | ||
|
|
||
| public synchronized RelpFrame submit(ByteBuffer input) { | ||
| boolean ready = false; | ||
|
|
||
| while (input.hasRemaining() && !ready) { | ||
|
|
||
| if (!txn.isComplete()) { | ||
| txn.accept(input); | ||
| } | ||
| else if (!command.isComplete()) { | ||
| command.accept(input); | ||
| } | ||
| else if (!payloadLength.isComplete()) { | ||
| payloadLength.accept(input); | ||
|
|
||
| if (payloadLength.isComplete()) { | ||
| // PayloadFunction depends on payload length and needs to by dynamically created | ||
| int payloadSize = payloadLength.toInt(); | ||
| payload = new FragmentImpl(new PayloadFunction(payloadSize)); | ||
| } | ||
| } | ||
| else if (!payload.isComplete()) { | ||
| payload.accept(input); | ||
| } | ||
| else if (!endOfTransfer.isComplete()) { | ||
| endOfTransfer.accept(input); | ||
|
|
||
| if (endOfTransfer.isComplete()) { | ||
| // all complete | ||
| ready = true; | ||
| } | ||
| } | ||
| else { | ||
| throw new IllegalStateException("submit not allowed on a complete frame"); | ||
| } | ||
| } | ||
|
|
||
| if (ready) { | ||
| RelpFrame relpFrame = new RelpFrameImpl(txn, command, payloadLength, payload, endOfTransfer); | ||
| clear(); | ||
| return relpFrame; | ||
| } | ||
| else { | ||
| return relpFrameStub; | ||
| } | ||
| } | ||
| } |
83 changes: 83 additions & 0 deletions
83
src/main/java/com/teragrep/rlp_03/frame/FrameClockLeaseful.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /* | ||
| * Java Reliable Event Logging Protocol Library Server Implementation RLP-03 | ||
| * Copyright (C) 2021-2024 Suomen Kanuuna Oy | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| * | ||
| * | ||
| * Additional permission under GNU Affero General Public License version 3 | ||
| * section 7 | ||
| * | ||
| * If you modify this Program, or any covered work, by linking or combining it | ||
| * with other code, such other code is not for that reason alone subject to any | ||
| * of the requirements of the GNU Affero GPL version 3 as long as this Program | ||
| * is the same Program as licensed from Suomen Kanuuna Oy without any additional | ||
| * modifications. | ||
| * | ||
| * Supplemented terms under GNU Affero General Public License version 3 | ||
| * section 7 | ||
| * | ||
| * Origin of the software must be attributed to Suomen Kanuuna Oy. Any modified | ||
| * versions must be marked as "Modified version of" The Program. | ||
| * | ||
| * Names of the licensors and authors may not be used for publicity purposes. | ||
| * | ||
| * No rights are granted for use of trade names, trademarks, or service marks | ||
| * which are in The Program if any. | ||
| * | ||
| * Licensee must indemnify licensors and authors for any liability that these | ||
| * contractual assumptions impose on licensors and authors. | ||
| * | ||
| * To the extent this program is licensed as part of the Commercial versions of | ||
| * Teragrep, the applicable Commercial License may apply to this file if you as | ||
| * a licensee so wish it. | ||
| */ | ||
| package com.teragrep.rlp_03.frame; | ||
|
|
||
| import com.teragrep.rlp_03.channel.buffer.BufferLease; | ||
| import com.teragrep.rlp_03.channel.buffer.BufferLeasePool; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.LinkedList; | ||
| import java.util.List; | ||
|
|
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| public class FrameClockLeaseful { | ||
|
|
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| private final BufferLeasePool bufferLeasePool; | ||
| private final FrameClock frameClock; | ||
| private final List<BufferLease> leases; | ||
|
|
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| public FrameClockLeaseful(BufferLeasePool bufferLeasePool, FrameClock frameClock) { | ||
| this.bufferLeasePool = bufferLeasePool; | ||
| this.frameClock = frameClock; | ||
| this.leases = new ArrayList<>(); | ||
| } | ||
|
|
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| public RelpFrame submit(BufferLease bufferLease) { | ||
| leases.add(bufferLease); | ||
| RelpFrame relpFrame = frameClock.submit(bufferLease.buffer()); | ||
|
|
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| RelpFrame rv; | ||
| if (relpFrame.isStub()) { | ||
| rv = new RelpFrameLeaseful(bufferLeasePool, relpFrame, Collections.emptyList()); | ||
| } | ||
| else { | ||
| LinkedList<BufferLease> frameLeases = new LinkedList<>(leases); | ||
| rv = new RelpFrameLeaseful(bufferLeasePool, relpFrame, frameLeases); | ||
| leases.clear(); | ||
| } | ||
| return rv; | ||
| } | ||
| } |
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