gson-comments/wsclient/src/main/java/com/google/gson/webservice/client/QueueConsumer.java
Inderjeet Singh e4e9254034 Added an asynchronous client for invoking Web-services. This client uses a queue to hold web-service requests and returns the control back to the caller. A separate thread executes these web-service requests and invokes a caller-suplied callback with the results.
Made WebServiceClient reusable across different type of Web-service calls.
Added configurable logging support in RequestSender, ResponseReceiver and WebServiceClients. Added some logging.
Throwing WebServiceSystemException instead of RuntimException.
2010-01-20 13:59:59 +00:00

60 lines
1.9 KiB
Java

/*
* Copyright (C) 2010 Google Inc.
*
* 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.google.gson.webservice.client;
import java.util.concurrent.BlockingQueue;
import com.google.gson.webservice.definition.WebServiceCall;
import com.google.gson.webservice.definition.WebServiceResponse;
import com.google.gson.webservice.definition.WebServiceSystemException;
/**
* A consumer that executes in its own thread consuming queue entries and invoking web-service calls
*
* @author inder
*/
final class QueueConsumer implements Runnable {
private final BlockingQueue<QueueEntry> queue;
private WebServiceClient client;
QueueConsumer(BlockingQueue<QueueEntry> queue, WebServiceClient client) {
this.queue = queue;
this.client = client;
}
@Override
public void run() {
try {
while(true) {
consume(queue.take());
}
} catch (InterruptedException e) {
// exit
}
}
private void consume(QueueEntry entry) {
try {
WebServiceResponse response = client.getResponse(entry.callSpec, entry.request);
WebServiceCall call = new WebServiceCall(entry.callSpec, entry.request, response);
entry.responseCallback.handleResponse(call);
} catch (WebServiceSystemException e) {
entry.responseCallback.handleError(e, entry.request, entry.callSpec);
}
}
}