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/**
* Copyright 2012 Kjetil Ørbekk <kjetil.orbekk@gmail.com>
*
* 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 com.orbekk.protobuf;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import com.google.protobuf.RpcCallback;
import com.google.protobuf.RpcController;
public class Rpc implements RpcController {
private CountDownLatch done = new CountDownLatch(1);
private volatile String errorText = "";
private volatile boolean hasFailed;
private volatile boolean canceled;
private volatile long timeoutMillis = 0;
private volatile List<RpcCallback<Object>> cancelNotificationListeners = null;
public Rpc() {
}
public Rpc(Rpc other) {
copyFrom(other);
}
public void copyFrom(Rpc other) {
errorText = other.errorText;
hasFailed = other.hasFailed;
canceled = other.canceled;
if (other.cancelNotificationListeners != null) {
for (RpcCallback<Object> listener :
other.cancelNotificationListeners) {
notifyOnCancel(listener);
}
}
}
public void writeTo(Data.Response.Builder response) {
response.setHasFailed(hasFailed);
response.setCanceled(canceled);
response.setErrorText(errorText);
}
public void readFrom(Data.Response response) {
hasFailed = response.getHasFailed();
canceled = response.getCanceled();
errorText = response.getErrorText();
}
@Override
public String errorText() {
return errorText;
}
public boolean isDone() {
return done.getCount() == 0;
}
public void await() throws InterruptedException {
done.await();
}
public void complete() {
done.countDown();
}
public boolean isOk() {
return !hasFailed && !canceled;
}
@Override
public boolean failed() {
return hasFailed;
}
@Override
public boolean isCanceled() {
return canceled;
}
@Override
public void notifyOnCancel(RpcCallback<Object> listener) {
if (cancelNotificationListeners == null) {
cancelNotificationListeners =
Collections.synchronizedList(
new ArrayList<RpcCallback<Object>>());
}
cancelNotificationListeners.add(listener);
}
@Override
public void reset() {
copyFrom(new Rpc());
}
@Override
public void setFailed(String message) {
hasFailed = true;
errorText = message;
}
public void cancel() {
canceled = true;
if (cancelNotificationListeners != null) {
for (RpcCallback<Object> listener :
cancelNotificationListeners) {
listener.run(null);
}
}
}
public long getTimeout() {
return timeoutMillis;
}
/** Set the timeout in number of milliseconds.
*
* The default timeout is 0, i.e. never time out.
*/
public void setTimeout(long milliseconds) {
timeoutMillis = milliseconds;
}
@Override
public void startCancel() {
}
}
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