heron/uploaders/src/java/org/apache/heron/uploader/dlog/DLContext.java

/**
 * 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.heron.uploader.dlog;

import org.apache.heron.spi.common.Config;
import org.apache.heron.spi.common.Context;

final class DLContext extends Context {

  public static final String DL_TOPOLOGIES_NS_URI = "heron.uploader.dlog.topologies.namespace.uri";
  public static final String DL_TOPOLOGIES_NUM_REPLICAS =
      "heron.uploader.dlog.topologies.num.replicas";

  private DLContext() {
  }

  public static String dlTopologiesNamespaceURI(Config config) {
    return config.getStringValue(DL_TOPOLOGIES_NS_URI);
  }

  public static int dlTopologiesNumReplicas(Config config) {
    // by default save 3 replicas for each topology
    return config.getIntegerValue(DL_TOPOLOGIES_NUM_REPLICAS, 3);
  }

}