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/*
* Copyright 2013 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.resolveengine.result;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import org.gradle.api.artifacts.VersionConstraint;
import org.gradle.api.artifacts.component.BuildIdentifier;
import org.gradle.api.artifacts.component.ComponentSelector;
import org.gradle.api.artifacts.component.LibraryComponentSelector;
import org.gradle.api.artifacts.component.ModuleComponentSelector;
import org.gradle.api.attributes.AttributeContainer;
import org.gradle.api.capabilities.Capability;
import org.gradle.api.internal.artifacts.DefaultModuleIdentifier;
import org.gradle.api.internal.artifacts.ImmutableVersionConstraint;
import org.gradle.api.internal.artifacts.dependencies.DefaultImmutableVersionConstraint;
import org.gradle.api.internal.attributes.ImmutableAttributes;
import org.gradle.internal.component.external.model.DefaultModuleComponentSelector;
import org.gradle.internal.component.external.model.ImmutableCapability;
import org.gradle.internal.component.local.model.DefaultLibraryComponentSelector;
import org.gradle.internal.component.local.model.DefaultProjectComponentSelector;
import org.gradle.internal.serialize.AbstractSerializer;
import org.gradle.internal.serialize.Decoder;
import org.gradle.internal.serialize.Encoder;
import org.gradle.util.Path;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class ComponentSelectorSerializer extends AbstractSerializer {
private final OptimizingAttributeContainerSerializer attributeContainerSerializer;
private final BuildIdentifierSerializer buildIdentifierSerializer;
public ComponentSelectorSerializer(AttributeContainerSerializer attributeContainerSerializer) {
this.attributeContainerSerializer = new OptimizingAttributeContainerSerializer(attributeContainerSerializer);
this.buildIdentifierSerializer = new BuildIdentifierSerializer();
}
void reset() {
attributeContainerSerializer.reset();
}
public ComponentSelector read(Decoder decoder) throws IOException {
byte id = decoder.readByte();
if (Implementation.ROOT_PROJECT.getId() == id) {
BuildIdentifier buildIdentifier = buildIdentifierSerializer.read(decoder);
String projectName = decoder.readString();
return new DefaultProjectComponentSelector(buildIdentifier, Path.ROOT, Path.ROOT, projectName, readAttributes(decoder), readCapabilities(decoder));
} else if (Implementation.ROOT_BUILD_PROJECT.getId() == id) {
BuildIdentifier buildIdentifier = buildIdentifierSerializer.read(decoder);
Path projectPath = Path.path(decoder.readString());
return new DefaultProjectComponentSelector(buildIdentifier, projectPath, projectPath, projectPath.getName(), readAttributes(decoder), readCapabilities(decoder));
} else if (Implementation.OTHER_BUILD_ROOT_PROJECT.getId() == id) {
BuildIdentifier buildIdentifier = buildIdentifierSerializer.read(decoder);
Path identityPath = Path.path(decoder.readString());
return new DefaultProjectComponentSelector(buildIdentifier, identityPath, Path.ROOT, identityPath.getName(), readAttributes(decoder), readCapabilities(decoder));
} else if (Implementation.OTHER_BUILD_PROJECT.getId() == id) {
BuildIdentifier buildIdentifier = buildIdentifierSerializer.read(decoder);
Path identityPath = Path.path(decoder.readString());
Path projectPath = Path.path(decoder.readString());
return new DefaultProjectComponentSelector(buildIdentifier, identityPath, projectPath, projectPath.getName(), readAttributes(decoder), readCapabilities(decoder));
} else if (Implementation.MODULE.getId() == id) {
return DefaultModuleComponentSelector.newSelector(DefaultModuleIdentifier.newId(decoder.readString(), decoder.readString()), readVersionConstraint(decoder), readAttributes(decoder), readCapabilities(decoder));
} else if (Implementation.LIBRARY.getId() == id) {
return new DefaultLibraryComponentSelector(decoder.readString(), decoder.readNullableString(), decoder.readNullableString());
}
throw new IllegalArgumentException("Unable to find component selector with id: " + id);
}
private ImmutableAttributes readAttributes(Decoder decoder) throws IOException {
return attributeContainerSerializer.read(decoder);
}
ImmutableVersionConstraint readVersionConstraint(Decoder decoder) throws IOException {
String requires = decoder.readString();
String prefers = decoder.readString();
String strictly = decoder.readString();
int rejectCount = decoder.readSmallInt();
List rejects = Lists.newArrayListWithCapacity(rejectCount);
for (int i = 0; i < rejectCount; i++) {
rejects.add(decoder.readString());
}
return new DefaultImmutableVersionConstraint(prefers, requires, strictly, rejects);
}
private List readCapabilities(Decoder decoder) throws IOException {
int size = decoder.readSmallInt();
if (size == 0) {
return Collections.emptyList();
}
ImmutableList.Builder builder = ImmutableList.builderWithExpectedSize(size);
for (int i=0; i capabilities) throws IOException {
encoder.writeSmallInt(capabilities.size());
for (Capability capability : capabilities) {
encoder.writeString(capability.getGroup());
encoder.writeString(capability.getName());
encoder.writeNullableString(capability.getVersion());
}
}
public void write(Encoder encoder, ComponentSelector value) throws IOException {
if (value == null) {
throw new IllegalArgumentException("Provided component selector may not be null");
}
Implementation implementation = resolveImplementation(value);
encoder.writeByte(implementation.getId());
if (implementation == Implementation.MODULE) {
ModuleComponentSelector moduleComponentSelector = (ModuleComponentSelector) value;
encoder.writeString(moduleComponentSelector.getGroup());
encoder.writeString(moduleComponentSelector.getModule());
VersionConstraint versionConstraint = moduleComponentSelector.getVersionConstraint();
writeVersionConstraint(encoder, versionConstraint);
writeAttributes(encoder, moduleComponentSelector.getAttributes());
writeCapabilities(encoder, moduleComponentSelector.getRequestedCapabilities());
} else if (implementation == Implementation.ROOT_PROJECT) {
DefaultProjectComponentSelector projectComponentSelector = (DefaultProjectComponentSelector) value;
buildIdentifierSerializer.write(encoder, projectComponentSelector.getBuildIdentifier());
encoder.writeString(projectComponentSelector.getProjectName());
writeAttributes(encoder, projectComponentSelector.getAttributes());
writeCapabilities(encoder, projectComponentSelector.getRequestedCapabilities());
} else if (implementation == Implementation.ROOT_BUILD_PROJECT) {
DefaultProjectComponentSelector projectComponentSelector = (DefaultProjectComponentSelector) value;
buildIdentifierSerializer.write(encoder, projectComponentSelector.getBuildIdentifier());
encoder.writeString(projectComponentSelector.getProjectPath());
writeAttributes(encoder, projectComponentSelector.getAttributes());
writeCapabilities(encoder, projectComponentSelector.getRequestedCapabilities());
} else if (implementation == Implementation.OTHER_BUILD_ROOT_PROJECT) {
DefaultProjectComponentSelector projectComponentSelector = (DefaultProjectComponentSelector) value;
buildIdentifierSerializer.write(encoder, projectComponentSelector.getBuildIdentifier());
encoder.writeString(projectComponentSelector.getIdentityPath().getPath());
writeAttributes(encoder, projectComponentSelector.getAttributes());
writeCapabilities(encoder, projectComponentSelector.getRequestedCapabilities());
} else if (implementation == Implementation.OTHER_BUILD_PROJECT) {
DefaultProjectComponentSelector projectComponentSelector = (DefaultProjectComponentSelector) value;
buildIdentifierSerializer.write(encoder, projectComponentSelector.getBuildIdentifier());
encoder.writeString(projectComponentSelector.getIdentityPath().getPath());
encoder.writeString(projectComponentSelector.getProjectPath());
writeAttributes(encoder, projectComponentSelector.getAttributes());
writeCapabilities(encoder, projectComponentSelector.getRequestedCapabilities());
} else if (implementation == Implementation.LIBRARY) {
LibraryComponentSelector libraryComponentSelector = (LibraryComponentSelector) value;
encoder.writeString(libraryComponentSelector.getProjectPath());
encoder.writeNullableString(libraryComponentSelector.getLibraryName());
encoder.writeNullableString(libraryComponentSelector.getVariant());
} else {
throw new IllegalStateException("Unsupported implementation type: " + implementation);
}
}
private void writeAttributes(Encoder encoder, AttributeContainer attributes) throws IOException {
attributeContainerSerializer.write(encoder, attributes);
}
private void writeVersionConstraint(Encoder encoder, VersionConstraint versionConstraint) throws IOException {
encoder.writeString(versionConstraint.getRequiredVersion());
encoder.writeString(versionConstraint.getPreferredVersion());
encoder.writeString(versionConstraint.getStrictVersion());
List rejectedVersions = versionConstraint.getRejectedVersions();
encoder.writeSmallInt(rejectedVersions.size());
for (String rejectedVersion : rejectedVersions) {
encoder.writeString(rejectedVersion);
}
}
private ComponentSelectorSerializer.Implementation resolveImplementation(ComponentSelector value) {
Implementation implementation;
if (value instanceof DefaultModuleComponentSelector) {
implementation = Implementation.MODULE;
} else if (value instanceof DefaultProjectComponentSelector) {
DefaultProjectComponentSelector projectComponentSelector = (DefaultProjectComponentSelector) value;
// Special case some common combinations of names and paths
boolean isARootProject = projectComponentSelector.projectPath().equals(Path.ROOT);
if (projectComponentSelector.getIdentityPath().equals(Path.ROOT) && isARootProject) {
return Implementation.ROOT_PROJECT;
}
if (projectComponentSelector.getIdentityPath().equals(projectComponentSelector.projectPath()) && projectComponentSelector.projectPath().getName().equals(projectComponentSelector.getProjectName())) {
return Implementation.ROOT_BUILD_PROJECT;
}
if (isARootProject && projectComponentSelector.getProjectName().equals(projectComponentSelector.getIdentityPath().getName())) {
return Implementation.OTHER_BUILD_ROOT_PROJECT;
}
return Implementation.OTHER_BUILD_PROJECT;
} else if (value instanceof DefaultLibraryComponentSelector) {
implementation = Implementation.LIBRARY;
} else {
throw new IllegalArgumentException("Unsupported component selector class: " + value.getClass());
}
return implementation;
}
private enum Implementation {
MODULE(1), ROOT_PROJECT(2), ROOT_BUILD_PROJECT(3), OTHER_BUILD_ROOT_PROJECT(4), OTHER_BUILD_PROJECT(5), LIBRARY(6), SNAPSHOT(7);
private final byte id;
Implementation(int id) {
this.id = (byte) id;
}
byte getId() {
return id;
}
}
private static class OptimizingAttributeContainerSerializer implements AttributeContainerSerializer {
// We use an identity hashmap for performance, because we know that our attributes
// are generated by a factory which guarantees same instances
private final Map writeIndex = Maps.newIdentityHashMap();
private final List readIndex = Lists.newArrayList();
private final AttributeContainerSerializer delegate;
private OptimizingAttributeContainerSerializer(AttributeContainerSerializer delegate) {
this.delegate = delegate;
}
/**
* If the cache expired, or that it contains too many entries,
* it is possible for the same file to be read multiple times, in which
* case the internal state of the reader _must_ be reset.
*/
public void reset() {
writeIndex.clear();
readIndex.clear();
}
@Override
public ImmutableAttributes read(Decoder decoder) throws IOException {
boolean empty = decoder.readBoolean();
if (empty) {
return ImmutableAttributes.EMPTY;
}
int idx = decoder.readSmallInt();
ImmutableAttributes attributes;
if (idx == readIndex.size()) {
// new entry
attributes = delegate.read(decoder);
readIndex.add(attributes);
} else {
attributes = readIndex.get(idx);
}
return attributes;
}
@Override
public void write(Encoder encoder, AttributeContainer container) throws IOException {
if (container.isEmpty()) {
encoder.writeBoolean(true);
return;
} else {
encoder.writeBoolean(false);
}
Integer idx = writeIndex.get(container);
if (idx == null) {
// new value
encoder.writeSmallInt(writeIndex.size());
writeIndex.put(container, writeIndex.size());
delegate.write(encoder, container);
} else {
// known value, only write index
encoder.writeSmallInt(idx);
}
}
}
}