Java – Timeout webservice call from client side

javarestresteasytimeout

I'm calling a webservice using RestEasy Client. One requirement is to abort/timeout the call if it runs for more that 5 seconds. How would I achieve this with RestEasy Client? I have only seen server side timeout, i.e. the Rest Easy websevice will timeout the request if it's not fulfilled within a certain time.

Best Answer

A RESTEasy client typically uses Apache HttpClient to handle the network conversation.

You can override the HttpClient properties with your own custom timeout parameters:

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpParams params = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, connectionTimeoutMillis);
HttpConnectionParams.setSoTimeout(params, socketTimeoutMillis);

The first param allows you to specify timeout establishing the initial connection and the second allows you to specify the maximum period of time in which a socket will wait while no data is sent.

You can use the modified HttpClient to build your ClientExecutor:

ClientExecutor executor = new ApacheHttpClient4Executor(httpClient);

Which can be used in turn to build a ClientRequest object. Or you can inject it into a RestClientProxyFactoryBean if you are using a Spring configuration for RESTEasy.

It's not exactly the same as an absolute 5 second timeout, but depending on what you are trying to accomplish, tweaking these two properties will usually fill the bill.

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Yes, it is possible:

public class Foo {
    private int x;

    public Foo() {
        this(1);
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    public Foo(int x) {
        this.x = x;
    }
}

To chain to a particular superclass constructor instead of one in the same class, use super instead of this. Note that you can only chain to one constructor, and it has to be the first statement in your constructor body.

See also this related question, which is about C# but where the same principles apply.

Best Answer

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