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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master.procedure;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">025</span><span id="line-25"></span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;</span> |
| <span class="source-line-no">028</span><span id="line-28"></span> |
| <span class="source-line-no">029</span><span id="line-29">/**</span> |
| <span class="source-line-no">030</span><span id="line-30"> * Base class for all the Region procedures that want to use a StateMachine. It provides some basic</span> |
| <span class="source-line-no">031</span><span id="line-31"> * helpers like basic locking, sync latch, and toStringClassDetails(). Defaults to holding the lock</span> |
| <span class="source-line-no">032</span><span id="line-32"> * for the life of the procedure.</span> |
| <span class="source-line-no">033</span><span id="line-33"> */</span> |
| <span class="source-line-no">034</span><span id="line-34">@InterfaceAudience.Private</span> |
| <span class="source-line-no">035</span><span id="line-35">public abstract class AbstractStateMachineRegionProcedure<TState></span> |
| <span class="source-line-no">036</span><span id="line-36"> extends AbstractStateMachineTableProcedure<TState> {</span> |
| <span class="source-line-no">037</span><span id="line-37"> private RegionInfo hri;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> protected AbstractStateMachineRegionProcedure(MasterProcedureEnv env, RegionInfo hri) {</span> |
| <span class="source-line-no">040</span><span id="line-40"> super(env);</span> |
| <span class="source-line-no">041</span><span id="line-41"> this.hri = hri;</span> |
| <span class="source-line-no">042</span><span id="line-42"> }</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> protected AbstractStateMachineRegionProcedure(MasterProcedureEnv env, RegionInfo hri,</span> |
| <span class="source-line-no">045</span><span id="line-45"> ProcedurePrepareLatch latch) {</span> |
| <span class="source-line-no">046</span><span id="line-46"> super(env, latch);</span> |
| <span class="source-line-no">047</span><span id="line-47"> this.hri = hri;</span> |
| <span class="source-line-no">048</span><span id="line-48"> }</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> protected AbstractStateMachineRegionProcedure() {</span> |
| <span class="source-line-no">051</span><span id="line-51"> // Required by the Procedure framework to create the procedure on replay</span> |
| <span class="source-line-no">052</span><span id="line-52"> super();</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> /** Returns The RegionInfo of the region we are operating on. */</span> |
| <span class="source-line-no">056</span><span id="line-56"> public RegionInfo getRegion() {</span> |
| <span class="source-line-no">057</span><span id="line-57"> return this.hri;</span> |
| <span class="source-line-no">058</span><span id="line-58"> }</span> |
| <span class="source-line-no">059</span><span id="line-59"></span> |
| <span class="source-line-no">060</span><span id="line-60"> /**</span> |
| <span class="source-line-no">061</span><span id="line-61"> * Used when deserializing. Otherwise, DON'T TOUCH IT!</span> |
| <span class="source-line-no">062</span><span id="line-62"> */</span> |
| <span class="source-line-no">063</span><span id="line-63"> protected void setRegion(final RegionInfo hri) {</span> |
| <span class="source-line-no">064</span><span id="line-64"> this.hri = hri;</span> |
| <span class="source-line-no">065</span><span id="line-65"> }</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> @Override</span> |
| <span class="source-line-no">068</span><span id="line-68"> public TableName getTableName() {</span> |
| <span class="source-line-no">069</span><span id="line-69"> return getRegion().getTable();</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> @Override</span> |
| <span class="source-line-no">073</span><span id="line-73"> public abstract TableOperationType getTableOperationType();</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> @Override</span> |
| <span class="source-line-no">076</span><span id="line-76"> public void toStringClassDetails(final StringBuilder sb) {</span> |
| <span class="source-line-no">077</span><span id="line-77"> super.toStringClassDetails(sb);</span> |
| <span class="source-line-no">078</span><span id="line-78"> sb.append(", region=").append(getRegion().getShortNameToLog());</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> @Override</span> |
| <span class="source-line-no">082</span><span id="line-82"> protected boolean holdLock(MasterProcedureEnv env) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> return true;</span> |
| <span class="source-line-no">084</span><span id="line-84"> }</span> |
| <span class="source-line-no">085</span><span id="line-85"></span> |
| <span class="source-line-no">086</span><span id="line-86"> @Override</span> |
| <span class="source-line-no">087</span><span id="line-87"> protected LockState acquireLock(final MasterProcedureEnv env) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> if (env.getProcedureScheduler().waitRegions(this, getTableName(), getRegion())) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> return LockState.LOCK_EVENT_WAIT;</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"> return LockState.LOCK_ACQUIRED;</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> @Override</span> |
| <span class="source-line-no">095</span><span id="line-95"> protected void releaseLock(final MasterProcedureEnv env) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> env.getProcedureScheduler().wakeRegions(this, getTableName(), getRegion());</span> |
| <span class="source-line-no">097</span><span id="line-97"> }</span> |
| <span class="source-line-no">098</span><span id="line-98"></span> |
| <span class="source-line-no">099</span><span id="line-99"> protected void setFailure(Throwable cause) {</span> |
| <span class="source-line-no">100</span><span id="line-100"> super.setFailure(getClass().getSimpleName(), cause);</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> @Override</span> |
| <span class="source-line-no">104</span><span id="line-104"> protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">105</span><span id="line-105"> super.serializeStateData(serializer);</span> |
| <span class="source-line-no">106</span><span id="line-106"> serializer.serialize(ProtobufUtil.toRegionInfo(getRegion()));</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> @Override</span> |
| <span class="source-line-no">110</span><span id="line-110"> protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {</span> |
| <span class="source-line-no">111</span><span id="line-111"> super.deserializeStateData(serializer);</span> |
| <span class="source-line-no">112</span><span id="line-112"> this.hri = ProtobufUtil.toRegionInfo(serializer.deserialize(HBaseProtos.RegionInfo.class));</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114">}</span> |
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| </pre> |
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