co.cask.cdap.common.MasterUtils.java Source code

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Here is the source code for co.cask.cdap.common.MasterUtils.java

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/*
 * Copyright  2014-2016 Cask Data, Inc.
 *
 * 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 co.cask.cdap.common;

import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.conf.Constants;
import co.cask.cdap.master.startup.ExploreServiceResourceKeys;
import co.cask.cdap.master.startup.ServiceResourceKeys;
import com.google.common.collect.ImmutableSet;

import java.util.Set;

/**
 * Provides utility methods for CDAP master checks
 */
public final class MasterUtils {

    /**
     * Explicitly disallow default constructor for utility class
     */
    private MasterUtils() {
    }

    /**
     * Creates a set of system service resource keys
     * @param cConf the configured CDAP settings
     * @return a set of {@link ServiceResourceKeys} for all system services
     */
    public static Set<ServiceResourceKeys> createSystemServicesResourceKeysSet(CConfiguration cConf) {
        ImmutableSet.Builder<ServiceResourceKeys> builder = ImmutableSet.<ServiceResourceKeys>builder()
                .add(new ServiceResourceKeys(cConf, Constants.Service.TRANSACTION,
                        Constants.Transaction.Container.MEMORY_MB, Constants.Transaction.Container.NUM_CORES,
                        Constants.Transaction.Container.NUM_INSTANCES,
                        Constants.Transaction.Container.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.STREAMS, Constants.Stream.CONTAINER_MEMORY_MB,
                        Constants.Stream.CONTAINER_VIRTUAL_CORES, Constants.Stream.CONTAINER_INSTANCES,
                        Constants.Stream.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.METRICS, Constants.Metrics.MEMORY_MB,
                        Constants.Metrics.NUM_CORES, Constants.Metrics.NUM_INSTANCES,
                        Constants.Metrics.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.METRICS_PROCESSOR,
                        Constants.MetricsProcessor.MEMORY_MB, Constants.MetricsProcessor.NUM_CORES,
                        Constants.MetricsProcessor.NUM_INSTANCES, Constants.MetricsProcessor.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.LOGSAVER, Constants.LogSaver.MEMORY_MB,
                        Constants.LogSaver.NUM_CORES, Constants.LogSaver.NUM_INSTANCES,
                        Constants.LogSaver.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.DATASET_EXECUTOR,
                        Constants.Dataset.Executor.CONTAINER_MEMORY_MB,
                        Constants.Dataset.Executor.CONTAINER_VIRTUAL_CORES,
                        Constants.Dataset.Executor.CONTAINER_INSTANCES, Constants.Dataset.Executor.MAX_INSTANCES))
                .add(new ServiceResourceKeys(cConf, Constants.Service.MESSAGING_SERVICE,
                        Constants.MessagingSystem.CONTAINER_MEMORY_MB,
                        Constants.MessagingSystem.CONTAINER_VIRTUAL_CORES,
                        Constants.MessagingSystem.CONTAINER_INSTANCES, Constants.MessagingSystem.MAX_INSTANCES));
        if (cConf.getBoolean(Constants.Explore.EXPLORE_ENABLED)) {
            builder.add(new ExploreServiceResourceKeys(cConf, Constants.Service.EXPLORE_HTTP_USER_SERVICE,
                    Constants.Explore.CONTAINER_MEMORY_MB, Constants.Explore.CONTAINER_VIRTUAL_CORES));
        }
        return builder.build();
    }
}