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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.transport;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.core.Releasable;
import org.elasticsearch.core.Releasables;
import org.elasticsearch.tasks.CancellableTask;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.tasks.TaskManager;
import java.io.IOException;
public class RequestHandlerRegistry {
private final String action;
private final TransportRequestHandler handler;
private final boolean forceExecution;
private final boolean canTripCircuitBreaker;
private final String executor;
private final TaskManager taskManager;
private final Writeable.Reader requestReader;
public RequestHandlerRegistry(
String action,
Writeable.Reader requestReader,
TaskManager taskManager,
TransportRequestHandler handler,
String executor,
boolean forceExecution,
boolean canTripCircuitBreaker
) {
this.action = action;
this.requestReader = requestReader;
this.handler = handler;
this.forceExecution = forceExecution;
this.canTripCircuitBreaker = canTripCircuitBreaker;
this.executor = executor;
this.taskManager = taskManager;
}
public String getAction() {
return action;
}
public Request newRequest(StreamInput in) throws IOException {
return requestReader.read(in);
}
public void processMessageReceived(Request request, TransportChannel channel) throws Exception {
final Task task = taskManager.register(channel.getChannelType(), action, request);
Releasable unregisterTask = () -> taskManager.unregister(task);
try {
if (channel instanceof TcpTransportChannel && task instanceof CancellableTask) {
final TcpChannel tcpChannel = ((TcpTransportChannel) channel).getChannel();
final Releasable stopTracking = taskManager.startTrackingCancellableChannelTask(tcpChannel, (CancellableTask) task);
unregisterTask = Releasables.wrap(unregisterTask, stopTracking);
}
final TaskTransportChannel taskTransportChannel = new TaskTransportChannel(channel, unregisterTask);
handler.messageReceived(request, taskTransportChannel, task);
unregisterTask = null;
} finally {
Releasables.close(unregisterTask);
}
}
public boolean isForceExecution() {
return forceExecution;
}
public boolean canTripCircuitBreaker() {
return canTripCircuitBreaker;
}
public String getExecutor() {
return executor;
}
public TransportRequestHandler getHandler() {
return handler;
}
@Override
public String toString() {
return handler.toString();
}
public static RequestHandlerRegistry replaceHandler(
RequestHandlerRegistry registry,
TransportRequestHandler handler
) {
return new RequestHandlerRegistry<>(
registry.action,
registry.requestReader,
registry.taskManager,
handler,
registry.executor,
registry.forceExecution,
registry.canTripCircuitBreaker
);
}
}