org.apache.twill.internal.DefaultResourceReport.java Source code

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Here is the source code for org.apache.twill.internal.DefaultResourceReport.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.twill.internal;

import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Multimaps;
import com.google.common.collect.SetMultimap;
import org.apache.twill.api.ResourceReport;
import org.apache.twill.api.TwillRunResources;

import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicReference;

/**
 * Implementation of {@link org.apache.twill.api.ResourceReport} with some
 * additional methods for maintaining the report.
 */
public final class DefaultResourceReport implements ResourceReport {
    private final SetMultimap<String, TwillRunResources> usedResources;
    private final TwillRunResources appMasterResources;
    private final String applicationId;
    private final AtomicReference<List<String>> services;

    public DefaultResourceReport(String applicationId, TwillRunResources masterResources) {
        this(applicationId, masterResources, Collections.<String, Collection<TwillRunResources>>emptyMap(),
                Collections.<String>emptyList());
    }

    public DefaultResourceReport(String applicationId, TwillRunResources masterResources,
            Map<String, Collection<TwillRunResources>> resources, List<String> services) {
        this.applicationId = applicationId;
        this.appMasterResources = masterResources;
        this.usedResources = HashMultimap.create();
        for (Map.Entry<String, Collection<TwillRunResources>> entry : resources.entrySet()) {
            this.usedResources.putAll(entry.getKey(), entry.getValue());
        }
        this.services = new AtomicReference<>(services);
    }

    /**
     * Add resources used by an instance of the runnable.
     *
     * @param runnableName name of runnable.
     * @param resources resources to add.
     */
    public void addRunResources(String runnableName, TwillRunResources resources) {
        usedResources.put(runnableName, resources);
    }

    /**
     * Remove the resource corresponding to the given runnable and container.
     *
     * @param runnableName name of runnable.
     * @param containerId container id of the runnable.
     */
    public void removeRunnableResources(String runnableName, String containerId) {
        TwillRunResources toRemove = null;
        // could be faster if usedResources was a Table, but that makes returning the
        // report a little more complex, and this does not need to be terribly fast.
        for (TwillRunResources resources : usedResources.get(runnableName)) {
            if (resources.getContainerId().equals(containerId)) {
                toRemove = resources;
                break;
            }
        }
        usedResources.remove(runnableName, toRemove);
    }

    /**
     * Get all the run resources being used by all instances of the specified runnable.
     *
     * @param runnableName the runnable name.
     * @return resources being used by all instances of the runnable.
     */
    @Override
    public Collection<TwillRunResources> getRunnableResources(String runnableName) {
        return usedResources.get(runnableName);
    }

    /**
     * Get all the run resources being used across all runnables.
     *
     * @return all run resources used by all instances of all runnables.
     */
    @Override
    public Map<String, Collection<TwillRunResources>> getResources() {
        return Multimaps.unmodifiableSetMultimap(usedResources).asMap();
    }

    /**
     * Get the resources application master is using.
     *
     * @return resources being used by the application master.
     */
    @Override
    public TwillRunResources getAppMasterResources() {
        return appMasterResources;
    }

    /**
     * Get the id of the application master.
     *
     * @return id of the application master.
     */
    @Override
    public String getApplicationId() {
        return applicationId;
    }

    /**
     * Set the list of services of the application master.
     *
     * @param services list of services to set.
     */
    public void setServices(List<String> services) {
        this.services.set(ImmutableList.copyOf(services));
    }

    /**
     * Get the list of services of the application master.
     *
     * @return list of services of the application master.
     */
    @Override
    public List<String> getServices() {
        return services.get();
    }

    @Override
    public String toString() {
        return "DefaultResourceReport{" + "usedResources=" + usedResources + ", appMasterResources="
                + appMasterResources + ", applicationId='" + applicationId + '\'' + ", services=" + services + '}';
    }
}