An asynchronous callback object that manages timeouts
-----------------------------------------------------
Key: XMLRPC-56
URL: http://issues.apache.org/jira/browse/XMLRPC-56
Project: XML-RPC
Type: New Feature
Reporter: Ken Weiner
I have created an object that helps clients to XmlRpcClient impose a timeout
value onto a call to send an XML-RPC message.
I want to propose that this callback object be added to the XML-RPC codebase.
Feel free to change the name of the class or any of its variables or methods.
Here is example client code for the class:
TimingOutAsyncCallback callback = new TimingOutAsyncCallback(10000);
XmlRpcClient client = new XmlRpcClient(url);
client.executeAsync(methodName, aVector, callback);
callback.waitForResponse();
if (callback.getException() != null) {
throw callback.getException();
}
Object result = callback.getResult();
Here is the code for TimingOutAsyncCallback:
/**
* A callback object that can wait up to a specified amount
* of time for the XML-RPC response.
*/
protected class TimingOutAsyncCallback implements AsyncCallback {
private long timeout = 10 * 1000; // default to 10 seconds
private Object result;
private Exception exception;
public TimingOutAsyncCallback() {
super();
}
public TimingOutAsyncCallback(long timeout) {
this.timeout = timeout;
}
public void setTimeout(long timeout) {
this.timeout = timeout;
}
public long getTimeout() {
return this.timeout;
}
public Object getResult() {
return this.result;
}
public Exception getException() {
return this.exception;
}
public synchronized void handleError(Exception exception, URL url, String
method) {
this.exception = exception;
this.notify();
}
public synchronized void handleResult(Object result, URL url, String
method) {
this.result = result;
this.notify();
}
public synchronized void waitForResponse() throws InterruptedException {
this.wait(timeout);
}
}
Please comment if you have any questions or comments.
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