-
Notifications
You must be signed in to change notification settings - Fork 4.6k
/
DefaultListenerBuildOperationDecorator.java
270 lines (228 loc) · 10.9 KB
/
DefaultListenerBuildOperationDecorator.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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
/*
* Copyright 2018 the original author or authors.
*
* 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 org.gradle.configuration.internal;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableSet;
import groovy.lang.Closure;
import org.apache.commons.lang.ClassUtils;
import org.gradle.BuildListener;
import org.gradle.api.Action;
import org.gradle.api.ProjectEvaluationListener;
import org.gradle.api.execution.TaskExecutionGraphListener;
import org.gradle.configuration.internal.ExecuteListenerBuildOperationType.DetailsImpl;
import org.gradle.internal.InternalListener;
import org.gradle.internal.operations.BuildOperationContext;
import org.gradle.internal.operations.BuildOperationDescriptor;
import org.gradle.internal.operations.BuildOperationExecutor;
import org.gradle.internal.operations.RunnableBuildOperation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
import java.util.List;
import static org.gradle.configuration.internal.ExecuteListenerBuildOperationType.RESULT;
public class DefaultListenerBuildOperationDecorator implements ListenerBuildOperationDecorator {
private static final ImmutableSet<Class<?>> SUPPORTED_INTERFACES = ImmutableSet.of(
BuildListener.class,
ProjectEvaluationListener.class,
TaskExecutionGraphListener.class
);
// we don't decorate everything in BuildListener, just projectsLoaded/projectsEvaluated
private static final ImmutableSet<String> UNDECORATED_METHOD_NAMES = ImmutableSet.of(
"buildStarted",
"settingsEvaluated",
"buildFinished"
);
private final BuildOperationExecutor buildOperationExecutor;
@VisibleForTesting
final DefaultUserCodeApplicationContext userCodeApplicationContext = new DefaultUserCodeApplicationContext();
public DefaultListenerBuildOperationDecorator(BuildOperationExecutor buildOperationExecutor) {
this.buildOperationExecutor = buildOperationExecutor;
}
public UserCodeApplicationContext getUserCodeApplicationContext() {
return userCodeApplicationContext;
}
public <T> Action<T> decorate(String registrationPoint, Action<T> action) {
UserCodeApplicationId applicationId = userCodeApplicationContext.current();
if (applicationId == null || action instanceof InternalListener) {
return action;
}
return new BuildOperationEmittingAction<T>(applicationId, registrationPoint, action);
}
public <T> Closure<T> decorate(String registrationPoint, Closure<T> closure) {
UserCodeApplicationId applicationId = userCodeApplicationContext.current();
if (applicationId == null) {
return closure;
}
return new BuildOperationEmittingClosure<T>(applicationId, registrationPoint, closure);
}
@SuppressWarnings("unchecked")
public <T> T decorate(String registrationPoint, Class<T> targetClass, T listener) {
if (listener instanceof InternalListener || !isSupported(listener)) {
return listener;
}
UserCodeApplicationId applicationId = userCodeApplicationContext.current();
if (applicationId == null) {
return listener;
}
Class<?> listenerClass = listener.getClass();
List<Class<?>> allInterfaces = ClassUtils.getAllInterfaces(listenerClass);
BuildOperationEmittingInvocationHandler handler = new BuildOperationEmittingInvocationHandler(applicationId, registrationPoint, listener);
return targetClass.cast(Proxy.newProxyInstance(listenerClass.getClassLoader(), allInterfaces.toArray(new Class[0]), handler));
}
public Object decorateUnknownListener(String registrationPoint, Object listener) {
return decorate(registrationPoint, Object.class, listener);
}
private static boolean isSupported(Object listener) {
for (Class<?> i : SUPPORTED_INTERFACES) {
if (i.isInstance(listener)) {
return true;
}
}
return false;
}
private static abstract class Operation implements RunnableBuildOperation {
private final UserCodeApplicationId applicationId;
private final String registrationPoint;
protected Operation(UserCodeApplicationId applicationId, String registrationPoint) {
this.applicationId = applicationId;
this.registrationPoint = registrationPoint;
}
@Override
public BuildOperationDescriptor.Builder description() {
return BuildOperationDescriptor
.displayName("Execute " + registrationPoint + " listener")
.details(new DetailsImpl(applicationId, registrationPoint));
}
}
private class BuildOperationEmittingAction<T> implements Action<T> {
private final UserCodeApplicationId applicationId;
private final String registrationPoint;
private final Action<T> delegate;
private BuildOperationEmittingAction(UserCodeApplicationId applicationId, String registrationPoint, Action<T> delegate) {
this.applicationId = applicationId;
this.delegate = delegate;
this.registrationPoint = registrationPoint;
}
@Override
public void execute(final T arg) {
buildOperationExecutor.run(new Operation(applicationId, registrationPoint) {
@Override
public void run(final BuildOperationContext context) {
userCodeApplicationContext.reapply(applicationId, new Runnable() {
@Override
public void run() {
delegate.execute(arg);
}
});
context.setResult(RESULT);
}
});
}
}
private class BuildOperationEmittingClosure<T> extends Closure<T> {
private final UserCodeApplicationId applicationId;
private final String registrationPoint;
private final Closure<T> delegate;
private BuildOperationEmittingClosure(UserCodeApplicationId application, String registrationPoint, Closure<T> delegate) {
super(delegate.getOwner(), delegate.getThisObject());
this.applicationId = application;
this.delegate = delegate;
this.registrationPoint = registrationPoint;
}
public void doCall(final Object... args) {
buildOperationExecutor.run(new Operation(applicationId, registrationPoint) {
@Override
public void run(final BuildOperationContext context) {
userCodeApplicationContext.reapply(applicationId, new Runnable() {
@Override
public void run() {
int numClosureArgs = delegate.getMaximumNumberOfParameters();
Object[] finalArgs = numClosureArgs < args.length ? Arrays.copyOf(args, numClosureArgs) : args;
delegate.call(finalArgs);
context.setResult(RESULT);
}
});
}
});
}
@Override
public void setDelegate(Object delegateObject) {
delegate.setDelegate(delegateObject);
}
@Override
public void setResolveStrategy(int resolveStrategy) {
delegate.setResolveStrategy(resolveStrategy);
}
@Override
public int getMaximumNumberOfParameters() {
return delegate.getMaximumNumberOfParameters();
}
}
private class BuildOperationEmittingInvocationHandler implements InvocationHandler {
private final UserCodeApplicationId applicationId;
private final String registrationPoint;
private final Object delegate;
private BuildOperationEmittingInvocationHandler(UserCodeApplicationId applicationId, String registrationPoint, Object delegate) {
this.applicationId = applicationId;
this.registrationPoint = registrationPoint;
this.delegate = delegate;
}
@Override
public Object invoke(Object proxy, final Method method, final Object[] args) throws Throwable {
final String methodName = method.getName();
if (methodName.equals("toString") && (args == null || args.length == 0)) {
return "BuildOperationEmittingBuildListenerInvocationHandler{delegate: " + delegate + "}";
} else if (methodName.equals("hashCode") && (args == null || args.length == 0)) {
return delegate.hashCode();
} else if (methodName.equals("equals") && args.length == 1) {
return proxy == args[0] || isSame(args[0]);
} else if (!SUPPORTED_INTERFACES.contains(method.getDeclaringClass()) || UNDECORATED_METHOD_NAMES.contains(methodName)) {
return method.invoke(delegate, args);
} else {
buildOperationExecutor.run(new Operation(applicationId, registrationPoint) {
@Override
public void run(final BuildOperationContext context) {
userCodeApplicationContext.reapply(applicationId, new Runnable() {
@Override
public void run() {
try {
method.invoke(delegate, args);
context.setResult(RESULT);
} catch (Exception e) {
context.failed(e);
}
}
});
}
});
// all of the interfaces that we decorate have 100% void methods
//noinspection ConstantConditions
return null;
}
}
private boolean isSame(Object arg) {
if (Proxy.isProxyClass(arg.getClass())) {
InvocationHandler invocationHandler = Proxy.getInvocationHandler(arg);
if (getClass() == invocationHandler.getClass()) {
BuildOperationEmittingInvocationHandler cast = (BuildOperationEmittingInvocationHandler) invocationHandler;
return cast.delegate.equals(delegate);
}
}
return false;
}
}
}