org.janusgraph.hadoop.config.ModifiableHadoopConfiguration Maven / Gradle / Ivy
// Copyright 2017 JanusGraph 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.janusgraph.hadoop.config;
import com.google.common.base.Preconditions;
import org.apache.hadoop.conf.Configuration;
import org.janusgraph.diskstorage.configuration.ConfigElement;
import org.janusgraph.diskstorage.configuration.ConfigNamespace;
import org.janusgraph.diskstorage.configuration.ModifiableConfiguration;
import org.janusgraph.graphdb.configuration.GraphDatabaseConfiguration;
public class ModifiableHadoopConfiguration extends ModifiableConfiguration {
private final Configuration conf;
private ModifiableHadoopConfiguration(ConfigNamespace root, Configuration c) {
super(root, new HadoopConfiguration(c), Restriction.NONE);
this.conf = c;
}
public static ModifiableHadoopConfiguration of(ConfigNamespace root, Configuration c) {
Preconditions.checkNotNull(c);
return new ModifiableHadoopConfiguration(root, c);
}
public static ModifiableConfiguration prefixView(ConfigNamespace newRoot, ConfigNamespace prefixRoot,
ModifiableHadoopConfiguration mc) {
HadoopConfiguration prefixConf = new HadoopConfiguration(mc.getHadoopConfiguration(),
ConfigElement.getPath(prefixRoot, true) + ".");
return new ModifiableConfiguration(newRoot, prefixConf, Restriction.NONE);
}
public Configuration getHadoopConfiguration() {
return conf;
}
public ModifiableConfiguration getJanusGraphConf() {
return prefixView(GraphDatabaseConfiguration.ROOT_NS, JanusGraphHadoopConfiguration.GRAPH_CONFIG_KEYS, this);
}
}