gradle-master/subprojects/dependency-management/src/main/java/org/gradle/internal/locking/NoOpDependencyLockingProvider.java
/*
 * Copyright 2018 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.internal.locking;

import org.gradle.api.artifacts.component.ModuleComponentIdentifier;
import org.gradle.api.artifacts.dsl.LockMode;
import org.gradle.api.file.RegularFileProperty;
import org.gradle.api.internal.artifacts.dsl.dependencies.DependencyLockingProvider;
import org.gradle.api.internal.artifacts.dsl.dependencies.DependencyLockingState;
import org.gradle.api.provider.ListProperty;
import org.gradle.api.provider.Property;

import java.util.Set;

public class NoOpDependencyLockingProvider implements DependencyLockingProvider {

    private static final NoOpDependencyLockingProvider INSTANCE = new NoOpDependencyLockingProvider();

    public static DependencyLockingProvider getInstance() {
        return INSTANCE;
    }

    private NoOpDependencyLockingProvider() {
        // Prevent construction
    }

    @Override
    public DependencyLockingState loadLockState(String configurationName) {
        return DefaultDependencyLockingState.EMPTY_LOCK_CONSTRAINT;
    }

    @Override
    public void persistResolvedDependencies(String configurationName, Set<ModuleComponentIdentifier> resolutionResult, Set<ModuleComponentIdentifier> changingResolvedModules) {
        // No-op
    }

    @Override
    public Property<LockMode> getLockMode() {
        throw new IllegalStateException("Should not be invoked on the no-op instance");
    }

    @Override
    public RegularFileProperty getLockFile() {
        throw new IllegalStateException("Should not be invoked on the no-op instance");
    }

    @Override
    public void buildFinished() {
        // No-op
    }

    @Override
    public ListProperty<String> getIgnoredDependencies() {
        throw new IllegalStateException("Should not be invoked on the no-op instance");
    }

    @Override
    public void confirmConfigurationNotLocked(String configurationName) {
        // No-op
    }
}
