blob: d5eda23a8d685a269121fa44e041e839cb7dcc8a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import com.yahoo.jdisc.Response;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
/**
* This class provides an implementation of {@link ResponseHandler} that allows you to wait for a {@link Response} to
* be returned.
*
* @author Simon Thoresen Hult
*/
public final class FutureResponse extends CompletableFuture<Response> implements ResponseHandler {
private final ResponseHandler handler;
/**
* <p>Constructs a new FutureResponse that returns a {@link NullContent} when {@link #handleResponse(Response)} is
* invoked.</p>
*/
public FutureResponse() {
this(NullContent.INSTANCE);
}
/**
* <p>Constructs a new FutureResponse that returns the given {@link ContentChannel} when {@link
* #handleResponse(Response)} is invoked.</p>
*
* @param content The content channel for the Response.
*/
public FutureResponse(final ContentChannel content) {
this(new ResponseHandler() {
@Override
public ContentChannel handleResponse(Response response) {
return content;
}
});
}
public void addListener(Runnable r, Executor e) { whenCompleteAsync((__, ___) -> r.run(), e); }
/**
* <p>Constructs a new FutureResponse that calls the given {@link ResponseHandler} when {@link
* #handleResponse(Response)} is invoked.</p>
*
* @param handler The ResponseHandler to invoke.
*/
public FutureResponse(ResponseHandler handler) {
this.handler = handler;
}
@Override
public ContentChannel handleResponse(Response response) {
complete(response);
return handler.handleResponse(response);
}
@Override
public final boolean cancel(boolean mayInterruptIfRunning) {
throw new UnsupportedOperationException();
}
@Override
public final boolean isCancelled() {
return false;
}
}
|
