/*
 * Copyright 2021 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.resources;

import java.util.function.Supplier;

class AllProjectsLock extends ExclusiveAccessResourceLock {
    private final Supplier<Iterable<ProjectLock>> cachedProjectLocks;

    public AllProjectsLock(String displayName, ResourceLockCoordinationService coordinationService, ResourceLockContainer owner, Supplier<Iterable<ProjectLock>> cachedProjectLocks) {
        super(displayName, coordinationService, owner);
        this.cachedProjectLocks = cachedProjectLocks;
    }

    @Override
    protected boolean canAcquire() {
        for (ProjectLock projectLock : cachedProjectLocks.get()) {
            if (projectLock.getAllProjectsLock() != this) {
                // We only care about locks that are associated with this "all projects" lock.
                continue;
            }
            if (projectLock.isLocked() && !projectLock.isLockedByCurrentThread()) {
                return false;
            }
        }
        return true;
    }
}
