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A quick developing framewort for internet company
/**
* Copyright (C) 2016 - 2030 youtongluan.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.yx.rpc.client;
import java.util.Objects;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.LockSupport;
import java.util.function.Consumer;
import org.apache.mina.core.future.IoFutureListener;
import org.apache.mina.core.future.WriteFuture;
import org.yx.common.Host;
import org.yx.exception.SoaException;
import org.yx.log.Log;
import org.yx.rpc.RpcErrorCode;
import org.yx.rpc.SoaExcutors;
import org.yx.rpc.client.route.HostChecker;
import org.yx.rpc.log.RpcLogs;
public final class RpcLocker implements IoFutureListener {
private final AtomicReference result = new AtomicReference<>();
final Req req;
private Host url;
final Consumer callback;
private final AtomicReference awaitThread = new AtomicReference<>();
RpcLocker(Req req, Consumer callback) {
this.req = req;
this.callback = callback;
}
public void url(Host url) {
this.url = url;
}
public Host url() {
return url;
}
public boolean isWaked() {
return this.result.get() != null;
}
public void wakeup(RpcResult result) {
long receiveTime = System.currentTimeMillis();
Objects.requireNonNull(result, "result cannot be null");
if (this.isWaked()) {
return;
}
if (!this.result.compareAndSet(null, result)) {
return;
}
Thread thread = awaitThread.getAndSet(null);
if (thread != null) {
LockSupport.unpark(thread);
}
if (this.callback != null) {
try {
callback.accept(result);
} catch (Throwable e) {
Log.printStack("sumk.rpc", e);
}
}
RpcLogs.clientLog(this.url, this.req, result, receiveTime);
}
@Override
public void operationComplete(final WriteFuture future) {
if (future.getException() == null) {
return;
}
SoaExcutors.getClientThreadPool().execute(() -> {
if (LockHolder.remove(req.getSn()) == null) {
return;
}
if (url != null) {
HostChecker.get().addDownUrl(url);
}
wakeup(RpcResult.sendFailed(req, future.getException()));
});
}
public RpcResult awaitForResponse() {
RpcResult rpcResult = this.result.get();
if (rpcResult != null) {
return rpcResult;
}
Thread currentThread = Thread.currentThread();
if (!awaitThread.compareAndSet(null, currentThread)) {
throw new SoaException(RpcErrorCode.TIMEOUT, "cannot await twice", new TimeoutException());
}
while (result.get() == null) {
LockSupport.parkUntil(System.currentTimeMillis() + 10000);
}
rpcResult = this.result.get();
if (rpcResult == null) {
rpcResult = RpcResult.timeout(req);
}
return rpcResult;
}
}
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