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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.thrift.async;
import org.apache.thrift.protocol.TProtocolFactory;
import org.apache.thrift.transport.TNonblockingTransport;
public abstract class TAsyncClient {
protected final TProtocolFactory ___protocolFactory;
protected final TNonblockingTransport ___transport;
protected final TAsyncClientManager ___manager;
protected TAsyncMethodCall ___currentMethod;
private Exception ___error;
private long ___timeout;
public TAsyncClient(
TProtocolFactory protocolFactory,
TAsyncClientManager manager,
TNonblockingTransport transport) {
this(protocolFactory, manager, transport, 0);
}
public TAsyncClient(
TProtocolFactory protocolFactory,
TAsyncClientManager manager,
TNonblockingTransport transport,
long timeout) {
this.___protocolFactory = protocolFactory;
this.___manager = manager;
this.___transport = transport;
this.___timeout = timeout;
}
public TProtocolFactory getProtocolFactory() {
return ___protocolFactory;
}
public long getTimeout() {
return ___timeout;
}
public boolean hasTimeout() {
return ___timeout > 0;
}
public void setTimeout(long timeout) {
this.___timeout = timeout;
}
/**
* Is the client in an error state?
*
* @return If client in an error state?
*/
public boolean hasError() {
return ___error != null;
}
/**
* Get the client's error - returns null if no error
*
* @return Get the client's error.
* <p>returns null if no error
*/
public Exception getError() {
return ___error;
}
protected void checkReady() {
// Ensure we are not currently executing a method
if (___currentMethod != null) {
throw new IllegalStateException(
"Client is currently executing another method: " + ___currentMethod.getClass().getName());
}
// Ensure we're not in an error state
if (___error != null) {
throw new IllegalStateException("Client has an error!", ___error);
}
}
/** Called by delegate method when finished */
protected void onComplete() {
___currentMethod = null;
}
/**
* Called by delegate method on error.
*
* @param exception the exception indicating the current error condition.
*/
protected void onError(Exception exception) {
___transport.close();
___currentMethod = null;
___error = exception;
}
}
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