org.apache.whirr.service.accumulo.AccumuloConfigurationBuilder.java Source code

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Here is the source code for org.apache.whirr.service.accumulo.AccumuloConfigurationBuilder.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.whirr.service.accumulo;

import java.io.IOException;

import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.whirr.Cluster;
import org.apache.whirr.ClusterSpec;
import org.apache.whirr.service.hadoop.HadoopConfigurationConverter;
import org.apache.whirr.service.zookeeper.ZooKeeperCluster;
import org.jclouds.scriptbuilder.domain.Statement;

public class AccumuloConfigurationBuilder {
    public static Statement buildAccumuloSite(String path, ClusterSpec clusterSpec, Cluster cluster)
            throws ConfigurationException, IOException {
        Configuration config = buildAccumuloSiteConfiguration(clusterSpec, cluster,
                new PropertiesConfiguration(AccumuloConfigurationBuilder.class
                        .getResource("/" + AccumuloConstants.FILE_ACCUMULO_DEFAULT_PROPERTIES)));
        return HadoopConfigurationConverter.asCreateXmlConfigurationFileStatement(path, config);
    }

    static Configuration buildAccumuloSiteConfiguration(ClusterSpec clusterSpec, Cluster cluster,
            Configuration defaults) throws ConfigurationException, IOException {
        Configuration config = build(clusterSpec, cluster, defaults, "accumulo-site");

        config.setProperty("instance.zookeeper.host", ZooKeeperCluster.getHosts(cluster));

        return config;
    }

    public static Statement buildAccumuloEnv(String path, ClusterSpec clusterSpec, Cluster cluster)
            throws ConfigurationException, IOException {
        Configuration config = buildAccumuloEnvConfiguration(clusterSpec, cluster,
                new PropertiesConfiguration(AccumuloConfigurationBuilder.class
                        .getResource("/" + AccumuloConstants.FILE_ACCUMULO_DEFAULT_PROPERTIES)));
        return HadoopConfigurationConverter.asCreateEnvironmentVariablesFileStatement(path, config);
    }

    static Configuration buildAccumuloEnvConfiguration(ClusterSpec clusterSpec, Cluster cluster,
            Configuration defaults) throws ConfigurationException, IOException {
        Configuration config = build(clusterSpec, cluster, defaults, "accumulo-env");

        return config;
    }

    private static Configuration build(ClusterSpec clusterSpec, Cluster cluster, Configuration defaults,
            String prefix) throws ConfigurationException {
        CompositeConfiguration config = new CompositeConfiguration();
        Configuration sub = clusterSpec.getConfigurationForKeysWithPrefix(prefix);
        config.addConfiguration(sub.subset(prefix)); // remove prefix
        config.addConfiguration(defaults.subset(prefix));
        return config;
    }
}