org.gradle.api.internalrepositories.metadata.DefaultMetadataFileSourceCodec Maven / Gradle / Ivy
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/*
* Copyright 2019 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.repositories.metadata;
import org.gradle.api.artifacts.component.ModuleComponentIdentifier;
import org.gradle.api.internal.artifacts.ImmutableModuleIdentifierFactory;
import org.gradle.api.internal.filestore.ArtifactIdentifierFileStore;
import org.gradle.internal.component.external.model.DefaultModuleComponentIdentifier;
import org.gradle.internal.component.external.model.ModuleComponentArtifactIdentifier;
import org.gradle.internal.component.external.model.ModuleComponentFileArtifactIdentifier;
import org.gradle.internal.component.model.PersistentModuleSource;
import org.gradle.internal.hash.HashCode;
import org.gradle.internal.serialize.Decoder;
import org.gradle.internal.serialize.Encoder;
import java.io.File;
import java.io.IOException;
/**
* A codec for {@link MetadataFileSource}. This codec is particular because of the persistent cache
* which must be relocatable. As a consequence, it would be an error to serialize the file path because
* it would contain an absolute path to the descriptor file.
*
* Therefore, the deserialized metadata file source reconstructs the file path from the component
* module artifact identifier.
*/
public class DefaultMetadataFileSourceCodec implements PersistentModuleSource.Codec {
private final ImmutableModuleIdentifierFactory moduleIdentifierFactory;
private final ArtifactIdentifierFileStore fileStore;
public DefaultMetadataFileSourceCodec(ImmutableModuleIdentifierFactory moduleIdentifierFactory, ArtifactIdentifierFileStore fileStore) {
this.moduleIdentifierFactory = moduleIdentifierFactory;
this.fileStore = fileStore;
}
@Override
public void encode(MetadataFileSource moduleSource, Encoder encoder) throws IOException {
ModuleComponentArtifactIdentifier artifactId = moduleSource.getArtifactId();
ModuleComponentIdentifier componentIdentifier = artifactId.getComponentIdentifier();
encoder.writeString(componentIdentifier.getGroup());
encoder.writeString(componentIdentifier.getModule());
encoder.writeString(componentIdentifier.getVersion());
encoder.writeString(artifactId.getFileName());
encoder.writeBinary(moduleSource.getSha1().toByteArray());
}
@Override
public MetadataFileSource decode(Decoder decoder) throws IOException {
String group = decoder.readString();
String module = decoder.readString();
String version = decoder.readString();
String name = decoder.readString();
byte[] sha1 = decoder.readBinary();
DefaultMetadataFileSource source = createSource(sha1, group, module, version, name);
return source;
}
private DefaultMetadataFileSource createSource(byte[] sha1, String group, String module, String version, String name) {
ModuleComponentArtifactIdentifier artifactId = createArtifactId(group, module, version, name);
HashCode hashCode = HashCode.fromBytes(sha1);
File metadataFile = fileStore.whereIs(artifactId, hashCode.toString());
return new DefaultMetadataFileSource(
artifactId,
metadataFile,
hashCode);
}
private ModuleComponentFileArtifactIdentifier createArtifactId(String group, String module, String version, String name) {
return new ModuleComponentFileArtifactIdentifier(
DefaultModuleComponentIdentifier.newId(
moduleIdentifierFactory.module(group, module),
version
),
name
);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
return o != null && getClass() == o.getClass();
}
@Override
public int hashCode() {
return moduleIdentifierFactory.hashCode();
}
}