-
-
Notifications
You must be signed in to change notification settings - Fork 722
/
RateLimiter.java
136 lines (115 loc) · 4.06 KB
/
RateLimiter.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
/*
* Copyright 2015-2018 Austin Keener & Michael Ritter & Florian Spieß
*
* 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.core.requests;
import net.dv8tion.jda.core.entities.impl.JDAImpl;
import net.dv8tion.jda.core.requests.ratelimit.IBucket;
import org.slf4j.MDC;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;
public abstract class RateLimiter
{
//Implementations of this class exist in the net.dv8tion.jda.core.requests.ratelimit package.
protected final Requester requester;
protected final ScheduledThreadPoolExecutor pool;
protected volatile boolean isShutdown = false;
protected volatile ConcurrentHashMap<String, IBucket> buckets = new ConcurrentHashMap<>();
protected volatile ConcurrentLinkedQueue<IBucket> submittedBuckets = new ConcurrentLinkedQueue<>();
protected RateLimiter(Requester requester, int poolSize)
{
this.requester = requester;
this.pool = new ScheduledThreadPoolExecutor(poolSize, new RateLimitThreadFactory(requester.getJDA()));
}
protected boolean isSkipped(Iterator<Request> it, Request request)
{
try
{
if (request.isCanceled() || !request.runChecks())
{
cancel(it, request, new CancellationException("RestAction has been cancelled"));
return true;
}
}
catch (Throwable exception)
{
cancel(it, request, exception);
return true;
}
return false;
}
private void cancel(Iterator<Request> it, Request request, Throwable exception)
{
request.onFailure(exception);
it.remove();
}
// -- Required Implementations --
public abstract Long getRateLimit(Route.CompiledRoute route);
protected abstract void queueRequest(Request request);
protected abstract Long handleResponse(Route.CompiledRoute route, okhttp3.Response response);
// --- Default Implementations --
public boolean isRateLimited(Route.CompiledRoute route)
{
return getRateLimit(route) != null;
}
public List<IBucket> getRouteBuckets()
{
synchronized (buckets)
{
return Collections.unmodifiableList(new ArrayList<>(buckets.values()));
}
}
public List<IBucket> getQueuedRouteBuckets()
{
synchronized (submittedBuckets)
{
return Collections.unmodifiableList(new ArrayList<>(submittedBuckets));
}
}
protected void shutdown(long time, TimeUnit unit)
{
isShutdown = true;
pool.setKeepAliveTime(time, unit);
pool.allowCoreThreadTimeOut(true);
}
public void forceShutdown()
{
pool.shutdownNow();
}
private class RateLimitThreadFactory implements ThreadFactory
{
final String identifier;
final AtomicInteger threadCount = new AtomicInteger(1);
public RateLimitThreadFactory(JDAImpl api)
{
identifier = api.getIdentifierString() + " RateLimit-Queue Pool";
}
@Override
public Thread newThread(Runnable r)
{
Thread t = new Thread(() ->
{
if (requester.api.getContextMap() != null)
MDC.setContextMap(requester.api.getContextMap());
r.run();
}, identifier + " - Thread " + threadCount.getAndIncrement());
t.setDaemon(true);
return t;
}
}
}