/*
* Copyright 2011 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.api.internal.artifacts.ivyservice.dynamicversions;
import org.gradle.api.artifacts.ModuleIdentifier;
import org.gradle.api.internal.artifacts.DefaultModuleIdentifier;
import org.gradle.api.internal.artifacts.ivyservice.CacheLockingManager;
import org.gradle.api.internal.artifacts.ivyservice.ivyresolve.*;
import org.gradle.cache.PersistentIndexedCache;
import org.gradle.internal.resolve.result.DefaultModuleVersionListing;
import org.gradle.internal.resolve.result.ModuleVersionListing;
import org.gradle.messaging.serialize.Decoder;
import org.gradle.messaging.serialize.Encoder;
import org.gradle.messaging.serialize.Serializer;
import org.gradle.util.BuildCommencedTimeProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Set;
public class SingleFileBackedModuleVersionsCache implements ModuleVersionsCache {
private static final Logger LOGGER = LoggerFactory.getLogger(SingleFileBackedModuleVersionsCache.class);
private final BuildCommencedTimeProvider timeProvider;
private final CacheLockingManager cacheLockingManager;
private PersistentIndexedCache<ModuleKey, ModuleVersionsCacheEntry> cache;
public SingleFileBackedModuleVersionsCache(BuildCommencedTimeProvider timeProvider, CacheLockingManager cacheLockingManager) {
this.timeProvider = timeProvider;
this.cacheLockingManager = cacheLockingManager;
}
private PersistentIndexedCache<ModuleKey, ModuleVersionsCacheEntry> getCache() {
if (cache == null) {
cache = initCache();
}
return cache;
}
private PersistentIndexedCache<ModuleKey, ModuleVersionsCacheEntry> initCache() {
return cacheLockingManager.createCache("module-versions", new ModuleKeySerializer(), new ModuleVersionsCacheEntrySerializer());
}
public void cacheModuleVersionList(ModuleComponentRepository repository, ModuleIdentifier moduleId, ModuleVersionListing listedVersions) {
LOGGER.debug("Caching version list in module versions cache: Using '{}' for '{}'", listedVersions, moduleId);
getCache().put(createKey(repository, moduleId), createEntry(listedVersions));
}
public CachedModuleVersionList getCachedModuleResolution(ModuleComponentRepository repository, ModuleIdentifier moduleId) {
ModuleVersionsCacheEntry moduleVersionsCacheEntry = getCache().get(createKey(repository, moduleId));
if (moduleVersionsCacheEntry == null) {
return null;
}
return new DefaultCachedModuleVersionList(moduleVersionsCacheEntry, timeProvider);
}
private ModuleKey createKey(ModuleComponentRepository repository, ModuleIdentifier moduleId) {
return new ModuleKey(repository.getId(), moduleId);
}
private ModuleVersionsCacheEntry createEntry(ModuleVersionListing listedVersions) {
return new ModuleVersionsCacheEntry(listedVersions, timeProvider.getCurrentTime());
}
private static class ModuleKey {
private final String repositoryId;
private final ModuleIdentifier moduleId;
private ModuleKey(String repositoryId, ModuleIdentifier moduleId) {
this.repositoryId = repositoryId;
this.moduleId = moduleId;
}
@Override
public boolean equals(Object o) {
if (o == null || !(o instanceof ModuleKey)) {
return false;
}
ModuleKey other = (ModuleKey) o;
return repositoryId.equals(other.repositoryId) && moduleId.equals(other.moduleId);
}
@Override
public int hashCode() {
return repositoryId.hashCode() ^ moduleId.hashCode();
}
}
private static class ModuleKeySerializer implements Serializer<ModuleKey> {
public void write(Encoder encoder, ModuleKey value) throws Exception {
encoder.writeString(value.repositoryId);
encoder.writeString(value.moduleId.getGroup());
encoder.writeString(value.moduleId.getName());
}
public ModuleKey read(Decoder decoder) throws Exception {
String resolverId = decoder.readString();
String group = decoder.readString();
String module = decoder.readString();
return new ModuleKey(resolverId, new DefaultModuleIdentifier(group, module));
}
}
private static class ModuleVersionsCacheEntrySerializer implements Serializer<ModuleVersionsCacheEntry> {
public void write(Encoder encoder, ModuleVersionsCacheEntry value) throws Exception {
Set<Versioned> versions = value.moduleVersionListing.getVersions();
encoder.writeInt(versions.size());
for (Versioned version : versions) {
encoder.writeString(version.getVersion());
}
encoder.writeLong(value.createTimestamp);
}
public ModuleVersionsCacheEntry read(Decoder decoder) throws Exception {
int size = decoder.readInt();
DefaultModuleVersionListing versions = new DefaultModuleVersionListing();
for (int i = 0; i < size; i++) {
versions.add(decoder.readString());
}
long createTimestamp = decoder.readLong();
return new ModuleVersionsCacheEntry(versions, createTimestamp);
}
}
}