ConfigModule.java

/*
 * 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.cdap.common.guice;

import co.cask.cdap.common.conf.CConfiguration;
import co.cask.cdap.common.conf.CConfigurationUtil;
import co.cask.cdap.common.conf.SConfiguration;
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;
  private final SConfiguration sConf;

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

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

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


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

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

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