001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.client; 019 020import java.util.HashMap; 021import java.util.Map; 022import java.util.TreeMap; 023import org.apache.hadoop.hbase.util.Bytes; 024import org.apache.yetus.audience.InterfaceAudience; 025 026import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos; 027 028/** 029 * A container for Result objects, grouped by regionName. 030 */ 031@InterfaceAudience.Private 032public class MultiResponse extends AbstractResponse { 033 034 // map of regionName to map of Results by the original index for that Result 035 private Map<byte[], RegionResult> results = new TreeMap<>(Bytes.BYTES_COMPARATOR); 036 037 /** 038 * The server can send us a failure for the region itself, instead of individual failure. It's a 039 * part of the protobuf definition. 040 */ 041 private Map<byte[], Throwable> exceptions = new TreeMap<>(Bytes.BYTES_COMPARATOR); 042 043 public MultiResponse() { 044 super(); 045 } 046 047 /** Returns Number of pairs in this container */ 048 public int size() { 049 int size = 0; 050 for (RegionResult result : results.values()) { 051 size += result.size(); 052 } 053 return size; 054 } 055 056 /** Add the pair to the container, grouped by the regionName. */ 057 public void add(byte[] regionName, int originalIndex, Object resOrEx) { 058 getResult(regionName).addResult(originalIndex, resOrEx); 059 } 060 061 public void addException(byte[] regionName, Throwable ie) { 062 exceptions.put(regionName, ie); 063 } 064 065 /** Returns the exception for the region, if any. Null otherwise. */ 066 public Throwable getException(byte[] regionName) { 067 return exceptions.get(regionName); 068 } 069 070 public Map<byte[], Throwable> getExceptions() { 071 return exceptions; 072 } 073 074 public void addStatistic(byte[] regionName, ClientProtos.RegionLoadStats stat) { 075 getResult(regionName).setStat(stat); 076 } 077 078 private RegionResult getResult(byte[] region) { 079 RegionResult rs = results.get(region); 080 if (rs == null) { 081 rs = new RegionResult(); 082 results.put(region, rs); 083 } 084 return rs; 085 } 086 087 public Map<byte[], RegionResult> getResults() { 088 return this.results; 089 } 090 091 @Override 092 public ResponseType type() { 093 return ResponseType.MULTI; 094 } 095 096 static class RegionResult { 097 Map<Integer, Object> result = new HashMap<>(); 098 ClientProtos.RegionLoadStats stat; 099 100 public void addResult(int index, Object result) { 101 this.result.put(index, result); 102 } 103 104 public void setStat(ClientProtos.RegionLoadStats stat) { 105 this.stat = stat; 106 } 107 108 public int size() { 109 return this.result.size(); 110 } 111 112 public ClientProtos.RegionLoadStats getStat() { 113 return this.stat; 114 } 115 } 116}