#5155

Committed 03 Dec 2025 02:00AM UTC coverage: 0.0% (-100.0%) from 100.0%

Build # #5155

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github

Committed by

ben-manes

Commit Message

add loading type to parameterized test dimensions to reduce task size

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/caffeine/src/main/java/com/github/benmanes/caffeine/cache/LocalCache.java

/*
 * Copyright 2015 Ben Manes. 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.
 */
package com.github.benmanes.caffeine.cache;

import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Executor;
import java.util.function.BiFunction;
import java.util.function.Function;

import org.jspecify.annotations.Nullable;

import com.github.benmanes.caffeine.cache.stats.StatsCounter;

/**
 * An in-memory cache providing thread safety and atomicity guarantees. This interface provides an
 * extension to {@link ConcurrentMap} for use with skeletal implementations.
 *
 * @author ben.manes@gmail.com (Ben Manes)
 */
interface LocalCache<K, V> extends ConcurrentMap<K, V> {

  /** Returns whether this cache is asynchronous. */
  boolean isAsync();

  /** Returns whether this cache has statistics enabled. */
  boolean isRecordingStats();

  /** Returns the {@link StatsCounter} used by this cache. */
  StatsCounter statsCounter();

  /** Asynchronously sends a removal notification to the listener. */
  void notifyRemoval(@Nullable K key, @Nullable V value, RemovalCause cause);

  /** Returns the {@link Executor} used by this cache. */
  Executor executor();

  /** Returns the map of in-flight refresh operations. */
  ConcurrentMap<Object, CompletableFuture<?>> refreshes();

  /** Returns the {@link Expiry} used by this cache. */
  @Nullable Expiry<K, V> expiry();

  /** Returns the {@link Ticker} used by this cache for statistics. */
  Ticker statsTicker();

  /** See {@link Cache#estimatedSize()}. */
  long estimatedSize();

  /** Returns the reference key. */
  Object referenceKey(K key);

  /**
   * Returns whether an absent entry has expired or has been reference collected but has not yet
   * been removed from the cache.
   */
  boolean isPendingEviction(K key);

  /**
   * See {@link Cache#getIfPresent(K)}. This method differs by accepting a parameter of whether
   * to record the hit-and-miss statistics based on the success of this operation.
   */
  @Nullable
  V getIfPresent(K key, boolean recordStats);

  /**
   * See {@link Cache#getIfPresent(K)}. This method differs by not recording the access with
   * the statistics nor the eviction policy.
   */
  @Nullable
  V getIfPresentQuietly(Object key);

  /** See {@link Cache#getAllPresent}. */
  Map<K, V> getAllPresent(Iterable<? extends K> keys);

  /**
   * See {@link ConcurrentMap#replace(K, K, V)}. This method differs by optionally not discarding an
   * in-flight refresh for the entry if replaced.
   */
  boolean replace(K key, V oldValue, V newValue, boolean shouldDiscardRefresh);

  @Override
  default @Nullable V compute(K key,
      BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
    return compute(key, remappingFunction, expiry(),
        /* recordLoad= */ true, /* recordLoadFailure= */ true);
  }

  /**
   * See {@link ConcurrentMap#compute}. This method differs by accepting parameters indicating
   * whether to record load statistics based on the success of this operation.
   */
  @Nullable V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction,
      @Nullable Expiry<? super K, ? super V> expiry, boolean recordLoad, boolean recordLoadFailure);

  @Override
  default @Nullable V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) {
    return computeIfAbsent(key, mappingFunction, /* recordStats= */ true, /* recordLoad= */ true);
  }

  /**
   * See {@link ConcurrentMap#computeIfAbsent}. This method differs by accepting parameters
   * indicating how to record statistics.
   */
  @Nullable V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction,
      boolean recordStats, boolean recordLoad);

  /** See {@link Cache#invalidateAll(Iterable)}. */
  default void invalidateAll(Iterable<?> keys) {
    for (Object key : keys) {
      remove(key);
    }
  }

  /** See {@link Cache#cleanUp}. */
  void cleanUp();

  /** Notify the removal listener of a replacement if the value reference was changed. */
  @SuppressWarnings("FutureReturnValueIgnored")
  default void notifyOnReplace(K key, @Nullable V oldValue, V newValue) {
    if ((oldValue == null) || (oldValue == newValue)) {
      return;
    } else if (isAsync()) {
      var oldFuture = (CompletableFuture<?>) oldValue;
      var newFuture = (CompletableFuture<?>) newValue;
      newFuture.whenCompleteAsync((nv, e) -> {
        if (e == null) {
          oldFuture.thenAcceptAsync(ov -> {
            if (nv != ov) {
              notifyRemoval(key, oldValue, RemovalCause.REPLACED);
            }
          }, executor());
        } else {
          notifyRemoval(key, oldValue, RemovalCause.REPLACED);
        }
      }, executor());
    } else {
      notifyRemoval(key, oldValue, RemovalCause.REPLACED);
    }
  }

  /** Decorates the mapping function to record statistics if enabled, recording a miss if called. */
  default <T, R> Function<? super T, ? extends R> statsAware(
      Function<? super T, ? extends R> mappingFunction, boolean recordLoad) {
    if (!isRecordingStats()) {
      return mappingFunction;
    }
    return key -> {
      R value;
      statsCounter().recordMisses(1);
      long startTime = statsTicker().read();
      try {
        value = mappingFunction.apply(key);
      } catch (Throwable t) {
        statsCounter().recordLoadFailure(statsTicker().read() - startTime);
        throw t;
      }
      long loadTime = statsTicker().read() - startTime;
      if (recordLoad) {
        if (value == null) {
          statsCounter().recordLoadFailure(loadTime);
        } else {
          statsCounter().recordLoadSuccess(loadTime);
        }
      }
      return value;
    };
  }

  /** Decorates the remapping function to record statistics if enabled. */
  default <T, U, R> BiFunction<? super T, ? super U, ? extends R> statsAware(
      BiFunction<? super T, ? super U, ? extends R> remappingFunction) {
    return statsAware(remappingFunction, /* recordLoad= */ true, /* recordLoadFailure= */ true);
  }

  /** Decorates the remapping function to record statistics if enabled. */
  default <T, U, R> BiFunction<? super T, ? super U, ? extends R> statsAware(
      BiFunction<? super T, ? super U, ? extends R> remappingFunction,
      boolean recordLoad, boolean recordLoadFailure) {
    if (!isRecordingStats()) {
      return remappingFunction;
    }
    return (t, u) -> {
      R result;
      long startTime = statsTicker().read();
      try {
        result = remappingFunction.apply(t, u);
      } catch (RuntimeException | Error e) {
        if (recordLoadFailure) {
          statsCounter().recordLoadFailure(statsTicker().read() - startTime);
        }
        throw e;
      }
      long loadTime = statsTicker().read() - startTime;
      if (recordLoad) {
        if (result == null) {
          statsCounter().recordLoadFailure(loadTime);
        } else {
          statsCounter().recordLoadSuccess(loadTime);
        }
      }
      return result;
    };
  }
}

1	/*
2	* Copyright 2015 Ben Manes. All Rights Reserved.
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package com.github.benmanes.caffeine.cache;
17
18	import java.util.Map;
19	import java.util.concurrent.CompletableFuture;
20	import java.util.concurrent.ConcurrentMap;
21	import java.util.concurrent.Executor;
22	import java.util.function.BiFunction;
23	import java.util.function.Function;
24
25	import org.jspecify.annotations.Nullable;
26
27	import com.github.benmanes.caffeine.cache.stats.StatsCounter;
28
29	/**
30	* An in-memory cache providing thread safety and atomicity guarantees. This interface provides an
31	* extension to {@link ConcurrentMap} for use with skeletal implementations.
32	*
33	* @author ben.manes@gmail.com (Ben Manes)
34	*/
35	interface LocalCache<K, V> extends ConcurrentMap<K, V> {
36
37	/** Returns whether this cache is asynchronous. */
38	boolean isAsync();
39
40	/** Returns whether this cache has statistics enabled. */
41	boolean isRecordingStats();
42
43	/** Returns the {@link StatsCounter} used by this cache. */
44	StatsCounter statsCounter();
45
46	/** Asynchronously sends a removal notification to the listener. */
47	void notifyRemoval(@Nullable K key, @Nullable V value, RemovalCause cause);
48
49	/** Returns the {@link Executor} used by this cache. */
50	Executor executor();
51
52	/** Returns the map of in-flight refresh operations. */
53	ConcurrentMap<Object, CompletableFuture<?>> refreshes();
54
55	/** Returns the {@link Expiry} used by this cache. */
56	@Nullable Expiry<K, V> expiry();
57
58	/** Returns the {@link Ticker} used by this cache for statistics. */
59	Ticker statsTicker();
60
61	/** See {@link Cache#estimatedSize()}. */
62	long estimatedSize();
63
64	/** Returns the reference key. */
65	Object referenceKey(K key);
66
67	/**
68	* Returns whether an absent entry has expired or has been reference collected but has not yet
69	* been removed from the cache.
70	*/
71	boolean isPendingEviction(K key);
72
73	/**
74	* See {@link Cache#getIfPresent(K)}. This method differs by accepting a parameter of whether
75	* to record the hit-and-miss statistics based on the success of this operation.
76	*/
77	@Nullable
78	V getIfPresent(K key, boolean recordStats);
79
80	/**
81	* See {@link Cache#getIfPresent(K)}. This method differs by not recording the access with
82	* the statistics nor the eviction policy.
83	*/
84	@Nullable
85	V getIfPresentQuietly(Object key);
86
87	/** See {@link Cache#getAllPresent}. */
88	Map<K, V> getAllPresent(Iterable<? extends K> keys);
89
90	/**
91	* See {@link ConcurrentMap#replace(K, K, V)}. This method differs by optionally not discarding an
92	* in-flight refresh for the entry if replaced.
93	*/
94	boolean replace(K key, V oldValue, V newValue, boolean shouldDiscardRefresh);
95
96	@Override
97	default @Nullable V compute(K key,
98	BiFunction<? super K, ? super V, ? extends V> remappingFunction) {
99	return compute(key, remappingFunction, expiry(),	×
100	/* recordLoad= / true, / recordLoadFailure= */ true);
101	}
102
103	/**
104	* See {@link ConcurrentMap#compute}. This method differs by accepting parameters indicating
105	* whether to record load statistics based on the success of this operation.
106	*/
107	@Nullable V compute(K key, BiFunction<? super K, ? super V, ? extends V> remappingFunction,
108	@Nullable Expiry<? super K, ? super V> expiry, boolean recordLoad, boolean recordLoadFailure);
109
110	@Override
111	default @Nullable V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction) {
112	return computeIfAbsent(key, mappingFunction, /* recordStats= / true, / recordLoad= */ true);	×
113	}
114
115	/**
116	* See {@link ConcurrentMap#computeIfAbsent}. This method differs by accepting parameters
117	* indicating how to record statistics.
118	*/
119	@Nullable V computeIfAbsent(K key, Function<? super K, ? extends V> mappingFunction,
120	boolean recordStats, boolean recordLoad);
121
122	/** See {@link Cache#invalidateAll(Iterable)}. */
123	default void invalidateAll(Iterable<?> keys) {
124	for (Object key : keys) {	×
125	remove(key);	×
126	}	×
127	}	×
128
129	/** See {@link Cache#cleanUp}. */
130	void cleanUp();
131
132	/** Notify the removal listener of a replacement if the value reference was changed. */
133	@SuppressWarnings("FutureReturnValueIgnored")
134	default void notifyOnReplace(K key, @Nullable V oldValue, V newValue) {
135	if ((oldValue == null) \|\| (oldValue == newValue)) {	×
136	return;	×
137	} else if (isAsync()) {	×
138	var oldFuture = (CompletableFuture<?>) oldValue;	×
139	var newFuture = (CompletableFuture<?>) newValue;	×
140	newFuture.whenCompleteAsync((nv, e) -> {	×
141	if (e == null) {	×
142	oldFuture.thenAcceptAsync(ov -> {	×
143	if (nv != ov) {	×
144	notifyRemoval(key, oldValue, RemovalCause.REPLACED);	×
145	}
146	}, executor());	×
147	} else {
148	notifyRemoval(key, oldValue, RemovalCause.REPLACED);	×
149	}
150	}, executor());	×
151	} else {	×
152	notifyRemoval(key, oldValue, RemovalCause.REPLACED);	×
153	}
154	}	×
155
156	/** Decorates the mapping function to record statistics if enabled, recording a miss if called. */
157	default <T, R> Function<? super T, ? extends R> statsAware(
158	Function<? super T, ? extends R> mappingFunction, boolean recordLoad) {
159	if (!isRecordingStats()) {	×
160	return mappingFunction;	×
161	}
162	return key -> {	×
163	R value;
164	statsCounter().recordMisses(1);	×
165	long startTime = statsTicker().read();	×
166	try {
167	value = mappingFunction.apply(key);	×
168	} catch (Throwable t) {	×
169	statsCounter().recordLoadFailure(statsTicker().read() - startTime);	×
170	throw t;	×
171	}	×
172	long loadTime = statsTicker().read() - startTime;	×
173	if (recordLoad) {	×
174	if (value == null) {	×
175	statsCounter().recordLoadFailure(loadTime);	×
176	} else {
177	statsCounter().recordLoadSuccess(loadTime);	×
178	}
179	}
180	return value;	×
181	};
182	}
183
184	/** Decorates the remapping function to record statistics if enabled. */
185	default <T, U, R> BiFunction<? super T, ? super U, ? extends R> statsAware(
186	BiFunction<? super T, ? super U, ? extends R> remappingFunction) {
187	return statsAware(remappingFunction, /* recordLoad= / true, / recordLoadFailure= */ true);	×
188	}
189
190	/** Decorates the remapping function to record statistics if enabled. */
191	default <T, U, R> BiFunction<? super T, ? super U, ? extends R> statsAware(
192	BiFunction<? super T, ? super U, ? extends R> remappingFunction,
193	boolean recordLoad, boolean recordLoadFailure) {
194	if (!isRecordingStats()) {	×
195	return remappingFunction;	×
196	}
197	return (t, u) -> {	×
198	R result;
199	long startTime = statsTicker().read();	×
200	try {
201	result = remappingFunction.apply(t, u);	×
202	} catch (RuntimeException \| Error e) {	×
203	if (recordLoadFailure) {	×
204	statsCounter().recordLoadFailure(statsTicker().read() - startTime);	×
205	}
206	throw e;	×
207	}	×
208	long loadTime = statsTicker().read() - startTime;	×
209	if (recordLoad) {	×
210	if (result == null) {	×
211	statsCounter().recordLoadFailure(loadTime);	×
212	} else {
213	statsCounter().recordLoadSuccess(loadTime);	×
214	}
215	}
216	return result;	×
217	};
218	}
219	}

ben-manes / caffeine / #5155

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