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Support configuration cache within a single daemon (JvmLocalCache) (#986
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99 changes: 99 additions & 0 deletions
99
plugin-gradle/src/main/java/com/diffplug/gradle/spotless/JvmLocalCache.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * Copyright 2021 DiffPlug | ||
| * | ||
| * 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 com.diffplug.gradle.spotless; | ||
|
|
||
| import java.io.File; | ||
| import java.io.Serializable; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
|
|
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| import org.gradle.api.GradleException; | ||
| import org.gradle.api.Task; | ||
|
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| import com.diffplug.spotless.FileSignature; | ||
|
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| class JvmLocalCache { | ||
| private static GradleException cacheIsStale() { | ||
| return new GradleException("Spotless JVM-local cache is stale. Regenerate the cache with\n" + | ||
| " " + (FileSignature.machineIsWin() ? "rmdir /q /s" : "rm -rf") + " .gradle/configuration-cache\n" + | ||
| "To make this workaround obsolete, please upvote https://github.com/diffplug/spotless/issues/987"); | ||
| } | ||
|
|
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| interface LiveCache<T> { | ||
| T get(); | ||
|
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| void set(T value); | ||
| } | ||
|
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| static <T> LiveCache<T> createLive(Task task, String propertyName) { | ||
| return new LiveCacheKeyImpl<T>(new InternalCacheKey(task.getProject().getProjectDir(), task.getPath(), propertyName)); | ||
| } | ||
|
|
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| static class LiveCacheKeyImpl<T> implements LiveCache<T>, Serializable { | ||
| InternalCacheKey internalKey; | ||
|
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| LiveCacheKeyImpl(InternalCacheKey internalKey) { | ||
| this.internalKey = internalKey; | ||
| } | ||
|
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| @Override | ||
| public void set(T value) { | ||
| daemonState.put(internalKey, value); | ||
| } | ||
|
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| @Override | ||
| public T get() { | ||
| Object value = daemonState.get(internalKey); | ||
| if (value == null) { | ||
| // TODO: throw TriggerConfigurationException(); (see https://github.com/diffplug/spotless/issues/987) | ||
| throw cacheIsStale(); | ||
| } else { | ||
| return (T) value; | ||
| } | ||
| } | ||
| } | ||
|
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| private static Map<InternalCacheKey, Object> daemonState = Collections.synchronizedMap(new HashMap<>()); | ||
|
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| private static class InternalCacheKey implements Serializable { | ||
| private File projectDir; | ||
| private String taskPath; | ||
| private String propertyName; | ||
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| InternalCacheKey(File projectDir, String taskPath, String keyName) { | ||
| this.projectDir = projectDir; | ||
| this.taskPath = taskPath; | ||
| this.propertyName = keyName; | ||
| } | ||
|
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) | ||
| return true; | ||
| if (o == null || getClass() != o.getClass()) | ||
| return false; | ||
| InternalCacheKey that = (InternalCacheKey) o; | ||
| return projectDir.equals(that.projectDir) && taskPath.equals(that.taskPath) && propertyName.equals(that.propertyName); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(projectDir, taskPath, propertyName); | ||
| } | ||
| } | ||
| } |
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