/**
    * 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.hadoop.hbase.replication;
  
  import com.google.common.base.Splitter;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.TreeMap;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.hbase.TableName;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.classification.InterfaceStability;
  import org.apache.hadoop.hbase.util.Bytes;
  
  /**
   * A configuration for the replication peer cluster.
   */
  @InterfaceAudience.Public
  @InterfaceStability.Evolving
  public class ReplicationPeerConfig {
  
    private String clusterKey;
    private String replicationEndpointImpl;
    private final Map<byte[], byte[]> peerData;
    private final Map<String, String> configuration;
    private Map<TableName, ? extends Collection<String>> tableCFsMap = null;
    private long bandwidth = 0;
  
    public static final String HBASE_REPLICATION_PEER_BASE_CONFIG =
      "hbase.replication.peer.base.config";
  
    public ReplicationPeerConfig() {
      this.peerData = new TreeMap<byte[], byte[]>(Bytes.BYTES_COMPARATOR);
      this.configuration = new HashMap<String, String>(0);
    }
  
    /**
     * Set the clusterKey which is the concatenation of the slave cluster's:
     *          hbase.zookeeper.quorum:hbase.zookeeper.property.clientPort:zookeeper.znode.parent
     */
    public ReplicationPeerConfig setClusterKey(String clusterKey) {
      this.clusterKey = clusterKey;
      return this;
    }
  
    /**
     * Sets the ReplicationEndpoint plugin class for this peer.
     * @param replicationEndpointImpl a class implementing ReplicationEndpoint
     */
    public ReplicationPeerConfig setReplicationEndpointImpl(String replicationEndpointImpl) {
      this.replicationEndpointImpl = replicationEndpointImpl;
      return this;
    }
  
    public String getClusterKey() {
      return clusterKey;
    }
  
    public String getReplicationEndpointImpl() {
      return replicationEndpointImpl;
    }
  
    public Map<byte[], byte[]> getPeerData() {
      return peerData;
    }
  
    public Map<String, String> getConfiguration() {
      return configuration;
    }
  
    public Map<TableName, List<String>> getTableCFsMap() {
      return (Map<TableName, List<String>>) tableCFsMap;
    }
  
    public void setTableCFsMap(Map<TableName, ? extends Collection<String>> tableCFsMap) {
      this.tableCFsMap = tableCFsMap;
    }
  
    public long getBandwidth() {
     return this.bandwidth;
   }
 
   public ReplicationPeerConfig setBandwidth(long bandwidth) {
     this.bandwidth = bandwidth;
     return this;
   }
 
   /**
    * Helper method to add base peer configs from Configuration to ReplicationPeerConfig
    * if not present in latter.
    *
    * This merges the user supplied peer configuration
    * {@link org.apache.hadoop.hbase.replication.ReplicationPeerConfig} with peer configs
    * provided as property hbase.replication.peer.base.configs in hbase configuration.
    * Expected format for this hbase configuration is "k1=v1;k2=v2,v2_1". Original value
    * of conf is retained if already present in ReplicationPeerConfig.
    *
    * @param conf Configuration
    */
   public void addBasePeerConfigsIfNotPresent(Configuration conf) {
     String basePeerConfigs = conf.get(HBASE_REPLICATION_PEER_BASE_CONFIG, "");
 
     if (basePeerConfigs.length() != 0) {
       Map<String, String> basePeerConfigMap = Splitter.on(';').trimResults().omitEmptyStrings()
         .withKeyValueSeparator("=").split(basePeerConfigs);
       for (Map.Entry<String,String> entry : basePeerConfigMap.entrySet()) {
         String configName = entry.getKey();
         String configValue = entry.getValue();
         // Only override if base config does not exist in existing replication peer configs
         if (!this.getConfiguration().containsKey(configName)) {
           this.getConfiguration().put(configName, configValue);
         }
       }
     }
   }
 
   @Override
   public String toString() {
     StringBuilder builder = new StringBuilder("clusterKey=").append(clusterKey).append(",");
     builder.append("replicationEndpointImpl=").append(replicationEndpointImpl);
     if (tableCFsMap != null) {
       builder.append(tableCFsMap.toString()).append(",");
     }
     builder.append("bandwidth=").append(bandwidth);
     return builder.toString();
   }
 }