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/*
 * 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.build;

import org.gradle.api.internal.GradleInternal;
import org.gradle.api.internal.SettingsInternal;
import org.gradle.internal.concurrent.Stoppable;

import javax.annotation.Nullable;
import java.util.function.Consumer;

/**
 * Controls the lifecycle of an individual build in the build tree.
 */
public interface BuildLifecycleController extends Stoppable {
    /**
     * Returns the current state of the mutable model for this build.
     */
    GradleInternal getGradle();

    /**
     * Configures the settings for this build, if not already available.
     *
     * @return The loaded settings instance.
     */
    SettingsInternal getLoadedSettings();

    /**
     * Configures the build, if not already available.
     *
     * @return The configured Gradle build instance.
     */
    GradleInternal getConfiguredBuild();

    /**
     * Schedules the specified tasks for this build. Configures the build, if necessary.
     */
    void scheduleTasks(final Iterable tasks);

    /**
     * Schedule requested tasks, as defined in the {@link org.gradle.StartParameter} for this build. Configures the build, if necessary.
     */
    void scheduleRequestedTasks();

    /**
     * Executes the tasks scheduled for this build. Does not automatically configure the build or schedule any tasks.
     */
    void executeTasks();

    /**
     * Calls the `buildFinished` hooks and other user code clean up.
     * Failures to finish the build are passed to the given consumer rather than thrown.
     *
     * @param failure The build failure that should be reported to the buildFinished hooks. When null, this launcher may use whatever failure it has already collected.
     */
    void finishBuild(@Nullable Throwable failure, Consumer collector);

    /**
     * Adds a listener to this build instance. Receives events for this build only.
     */
    void addListener(Object listener);
}