/
TriggerRestAction.java
158 lines (138 loc) · 4.79 KB
/
TriggerRestAction.java
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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/*
* Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
*
* 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 net.dv8tion.jda.internal.requests.restaction;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.exceptions.ContextException;
import net.dv8tion.jda.api.requests.Request;
import net.dv8tion.jda.api.requests.Response;
import net.dv8tion.jda.api.requests.Route;
import net.dv8tion.jda.api.utils.MiscUtil;
import net.dv8tion.jda.api.utils.data.DataObject;
import net.dv8tion.jda.internal.requests.RestActionImpl;
import okhttp3.RequestBody;
import javax.annotation.Nonnull;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.BiFunction;
import java.util.function.Consumer;
public class TriggerRestAction<T> extends RestActionImpl<T>
{
private final ReentrantLock mutex = new ReentrantLock();
private final List<Runnable> callbacks = new LinkedList<>();
private volatile boolean isReady;
private volatile Throwable exception;
public TriggerRestAction(JDA api, Route.CompiledRoute route)
{
super(api, route);
}
public TriggerRestAction(JDA api, Route.CompiledRoute route, DataObject data)
{
super(api, route, data);
}
public TriggerRestAction(JDA api, Route.CompiledRoute route, RequestBody data)
{
super(api, route, data);
}
public TriggerRestAction(JDA api, Route.CompiledRoute route, BiFunction<Response, Request<T>, T> handler)
{
super(api, route, handler);
}
public TriggerRestAction(JDA api, Route.CompiledRoute route, DataObject data, BiFunction<Response, Request<T>, T> handler)
{
super(api, route, data, handler);
}
public TriggerRestAction(JDA api, Route.CompiledRoute route, RequestBody data, BiFunction<Response, Request<T>, T> handler)
{
super(api, route, data, handler);
}
public void run()
{
MiscUtil.locked(mutex, () -> {
isReady = true;
callbacks.forEach(Runnable::run);
});
}
public void fail(Throwable throwable)
{
MiscUtil.locked(mutex, () -> {
exception = throwable;
callbacks.forEach(Runnable::run);
});
}
public void onReady(Runnable callback)
{
MiscUtil.locked(mutex, () -> {
if (isReady || exception != null)
callback.run();
else
callbacks.add(callback);
});
}
@Override
public void queue(Consumer<? super T> success, Consumer<? super Throwable> failure)
{
if (isReady)
{
super.queue(success, failure);
return;
}
Consumer<? super Throwable> onFailure = wrapContext(failure);
onReady(() -> {
if (this.exception != null)
onFailure.accept(exception);
else
super.queue(success, onFailure);
});
}
@Nonnull
@Override
public CompletableFuture<T> submit(boolean shouldQueue)
{
if (isReady)
return super.submit(shouldQueue);
CompletableFuture<T> future = new CompletableFuture<>();
Consumer<? super Throwable> onFailure = wrapContext(future::completeExceptionally);
onReady(() -> {
if (exception != null)
{
onFailure.accept(exception);
return;
}
CompletableFuture<T> handle = super.submit(shouldQueue);
handle.whenComplete((success, error) -> {
if (error != null)
onFailure.accept(error);
else
future.complete(success);
});
// Handle cancel forwarding
future.whenComplete((r, e) -> {
if (future.isCancelled())
handle.cancel(false);
});
});
return future;
}
private Consumer<? super Throwable> wrapContext(Consumer<? super Throwable> failure)
{
failure = failure == null ? getDefaultFailure() : failure;
if (!isPassContext() || (failure instanceof ContextException.ContextConsumer))
return failure;
return ContextException.here(failure);
}
}