co.cask.tigon.guice.ConfigModule.java Source code

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Here is the source code for co.cask.tigon.guice.ConfigModule.java

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/*
 * Copyright  2014 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.tigon.guice;

import co.cask.tigon.conf.CConfiguration;
import com.google.inject.AbstractModule;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.conf.YarnConfiguration;

/**
 * Guice module to provide bindings for configurations.
 */
public final class ConfigModule extends AbstractModule {

    private final CConfiguration cConf;
    private final Configuration hConf;

    public ConfigModule() {
        this(CConfiguration.create(), new Configuration());
    }

    public ConfigModule(Configuration hConf) {
        this(CConfiguration.create(), hConf);
    }

    public ConfigModule(CConfiguration cConf) {
        this(cConf, new Configuration());
    }

    public ConfigModule(CConfiguration cConf, Configuration hConf) {
        this.cConf = cConf;
        this.hConf = hConf;
        cConf.copyTxProperties(hConf);
    }

    @Override
    protected void configure() {
        bind(CConfiguration.class).toInstance(cConf);
        bind(Configuration.class).toInstance(hConf);
        bind(YarnConfiguration.class).toInstance(new YarnConfiguration(hConf));
    }
}