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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.transport.nio.channel;
import org.elasticsearch.common.util.concurrent.BaseFuture;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class ConnectFuture extends BaseFuture<NioSocketChannel> {
public boolean awaitConnectionComplete(long timeout, TimeUnit unit) throws InterruptedException {
try {
super.get(timeout, unit);
return true;
} catch (ExecutionException | TimeoutException e) {
return false;
}
}
public Exception getException() {
if (isDone()) {
try {
// Get should always return without blocking as we already checked 'isDone'
// We are calling 'get' here in order to throw the ExecutionException
super.get();
return null;
} catch (ExecutionException e) {
// We only make a public setters for IOException or RuntimeException
return (Exception) e.getCause();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return null;
}
} else {
return null;
}
}
public boolean isConnectComplete() {
return getChannel() != null;
}
public boolean connectFailed() {
return getException() != null;
}
void setConnectionComplete(NioSocketChannel channel) {
set(channel);
}
void setConnectionFailed(IOException e) {
setException(e);
}
void setConnectionFailed(RuntimeException e) {
setException(e);
}
private NioSocketChannel getChannel() {
if (isDone()) {
try {
// Get should always return without blocking as we already checked 'isDone'
return super.get(0, TimeUnit.NANOSECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return null;
} catch (ExecutionException e) {
return null;
} catch (TimeoutException e) {
throw new AssertionError("This should never happen as we only call get() after isDone() is true.");
}
} else {
return null;
}
}
}
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