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Lazily acquire JDK storage locations (#2263)
More lazily acquire JDK storage locations
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| type: fix | ||
| fix: | ||
| description: More lazily acquire JDK storage locations | ||
| links: | ||
| - https://github.com/palantir/gradle-baseline/pull/2263 |
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89 changes: 89 additions & 0 deletions
89
...a/src/main/groovy/com/palantir/baseline/plugins/javaversions/LazilyConfiguredMapping.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * (c) Copyright 2022 Palantir Technologies Inc. All rights reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package com.palantir.baseline.plugins.javaversions; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
| import java.util.function.Supplier; | ||
| import org.gradle.api.Action; | ||
|
|
||
| final class LazilyConfiguredMapping<K, V, A> { | ||
| private final Supplier<V> valueFactory; | ||
| private final List<LazyValues<K, V, A>> values = new ArrayList<>(); | ||
| private final Map<K, Optional<V>> computedValues = new HashMap<>(); | ||
| private boolean finalized = false; | ||
|
|
||
| LazilyConfiguredMapping(Supplier<V> valueFactory) { | ||
| this.valueFactory = valueFactory; | ||
| } | ||
|
|
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| public void put(LazyValues<K, V, A> lazyValues) { | ||
| ensureNotFinalized(); | ||
|
|
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| values.add(lazyValues); | ||
| } | ||
|
|
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| public void put(K key, Action<V> value) { | ||
| ensureNotFinalized(); | ||
|
|
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| put((requestedKey, _ignored) -> { | ||
| if (requestedKey.equals(key)) { | ||
| return Optional.of(value); | ||
| } | ||
|
|
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| return Optional.empty(); | ||
| }); | ||
| } | ||
|
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| private void ensureNotFinalized() { | ||
| if (finalized) { | ||
| throw new IllegalStateException(String.format( | ||
| "This %s has already been finalized as get() hase been called. " | ||
| + "No further elements can be added to it", | ||
| LazilyConfiguredMapping.class.getSimpleName())); | ||
| } | ||
| } | ||
|
|
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| public Optional<V> get(K key, A additionalData) { | ||
| finalized = true; | ||
|
|
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| return computedValues.computeIfAbsent(key, _ignored -> { | ||
| V value = valueFactory.get(); | ||
| AtomicBoolean created = new AtomicBoolean(false); | ||
| values.forEach(lazyValues -> { | ||
| lazyValues.compute(key, additionalData).ifPresent(action -> { | ||
| created.set(true); | ||
| action.execute(value); | ||
| }); | ||
| }); | ||
|
|
||
| if (created.get()) { | ||
| return Optional.of(value); | ||
| } | ||
|
|
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| return Optional.empty(); | ||
| }); | ||
| } | ||
|
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| public interface LazyValues<K, V, A> { | ||
| Optional<Action<V>> compute(K key, A additionalData); | ||
| } | ||
| } |
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2 changes: 1 addition & 1 deletion
2
.../src/main/resources/META-INF/gradle-plugins/com.palantir.baseline-java-version.properties
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| implementation-class=com.palantir.baseline.plugins.BaselineJavaVersion | ||
| implementation-class=com.palantir.baseline.plugins.javaversions.BaselineJavaVersion |
2 changes: 1 addition & 1 deletion
2
...src/main/resources/META-INF/gradle-plugins/com.palantir.baseline-java-versions.properties
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| implementation-class=com.palantir.baseline.plugins.BaselineJavaVersions | ||
| implementation-class=com.palantir.baseline.plugins.javaversions.BaselineJavaVersions |
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