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Merge pull request #2093 from tronprotocol/native_eventqueue
Native eventqueue
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67 changes: 67 additions & 0 deletions
67
src/main/java/org/tron/common/logsfilter/nativequeue/NativeMessageQueue.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package org.tron.common.logsfilter.nativequeue; | ||
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| import org.zeromq.SocketType; | ||
| import org.zeromq.ZContext; | ||
| import org.zeromq.ZMQ; | ||
| import java.util.Objects; | ||
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| public class NativeMessageQueue { | ||
| ZContext context = null; | ||
| private ZMQ.Socket publisher = null; | ||
| private static NativeMessageQueue instance; | ||
| private static final int DEFAULT_BIND_PORT = 5555; | ||
| private static final int DEFAULT_QUEUE_LENGTH = 1000; | ||
| public static NativeMessageQueue getInstance() { | ||
| if (Objects.isNull(instance)) { | ||
| synchronized (NativeMessageQueue.class) { | ||
| if (Objects.isNull(instance)) { | ||
| instance = new NativeMessageQueue(); | ||
| } | ||
| } | ||
| } | ||
| return instance; | ||
| } | ||
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| public boolean start(int bindPort, int sendQueueLength) { | ||
| context = new ZContext(); | ||
| publisher = context.createSocket(SocketType.PUB); | ||
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| if (Objects.isNull(publisher)){ | ||
| return false; | ||
| } | ||
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| if (bindPort == 0 || bindPort < 0) { | ||
| bindPort = DEFAULT_BIND_PORT; | ||
| } | ||
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| if (sendQueueLength ==0 || sendQueueLength < 0){ | ||
| sendQueueLength = DEFAULT_QUEUE_LENGTH; | ||
| } | ||
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| context.setSndHWM(sendQueueLength); | ||
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| String bindAddress = String.format("tcp://*:%d", bindPort); | ||
| publisher.bind(bindAddress); | ||
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| return true; | ||
| } | ||
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| public void stop(){ | ||
| if (Objects.nonNull(publisher)){ | ||
| publisher.close(); | ||
| } | ||
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| if (Objects.nonNull(context)){ | ||
| context.close(); | ||
| } | ||
| } | ||
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| public void publishTrigger(String data, String topic){ | ||
| if (Objects.isNull(publisher) || Objects.isNull(context.isClosed()) || context.isClosed()) { | ||
| return; | ||
| } | ||
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| publisher.sendMore(topic); | ||
| publisher.send(data); | ||
| } | ||
| } |
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