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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 org.apache.commons.lang3.builder.ToStringBuilder;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.commons.lang3.builder.ToStringStyle;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.procedure2.LockStatus;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.procedure2.Procedure;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">026</span><span id="line-26"></span> |
| <span class="source-line-no">027</span><span id="line-27">@InterfaceAudience.Private</span> |
| <span class="source-line-no">028</span><span id="line-28">class TableQueue extends Queue<TableName> {</span> |
| <span class="source-line-no">029</span><span id="line-29"> private final LockStatus namespaceLockStatus;</span> |
| <span class="source-line-no">030</span><span id="line-30"></span> |
| <span class="source-line-no">031</span><span id="line-31"> public TableQueue(TableName tableName, int priority, LockStatus tableLock,</span> |
| <span class="source-line-no">032</span><span id="line-32"> LockStatus namespaceLockStatus) {</span> |
| <span class="source-line-no">033</span><span id="line-33"> super(tableName, priority, tableLock);</span> |
| <span class="source-line-no">034</span><span id="line-34"> this.namespaceLockStatus = namespaceLockStatus;</span> |
| <span class="source-line-no">035</span><span id="line-35"> }</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37"> @Override</span> |
| <span class="source-line-no">038</span><span id="line-38"> public boolean isAvailable() {</span> |
| <span class="source-line-no">039</span><span id="line-39"> return !isEmpty() && !namespaceLockStatus.hasExclusiveLock();</span> |
| <span class="source-line-no">040</span><span id="line-40"> }</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42"> @Override</span> |
| <span class="source-line-no">043</span><span id="line-43"> public boolean requireExclusiveLock(Procedure<?> proc) {</span> |
| <span class="source-line-no">044</span><span id="line-44"> return requireTableExclusiveLock((TableProcedureInterface) proc);</span> |
| <span class="source-line-no">045</span><span id="line-45"> }</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> /**</span> |
| <span class="source-line-no">048</span><span id="line-48"> * @param proc must not be null</span> |
| <span class="source-line-no">049</span><span id="line-49"> */</span> |
| <span class="source-line-no">050</span><span id="line-50"> static boolean requireTableExclusiveLock(TableProcedureInterface proc) {</span> |
| <span class="source-line-no">051</span><span id="line-51"> switch (proc.getTableOperationType()) {</span> |
| <span class="source-line-no">052</span><span id="line-52"> case CREATE:</span> |
| <span class="source-line-no">053</span><span id="line-53"> case DELETE:</span> |
| <span class="source-line-no">054</span><span id="line-54"> case DISABLE:</span> |
| <span class="source-line-no">055</span><span id="line-55"> case SNAPSHOT:</span> |
| <span class="source-line-no">056</span><span id="line-56"> case ENABLE:</span> |
| <span class="source-line-no">057</span><span id="line-57"> case RESTORE_BACKUP_SYSTEM_TABLE:</span> |
| <span class="source-line-no">058</span><span id="line-58"> return true;</span> |
| <span class="source-line-no">059</span><span id="line-59"> case EDIT:</span> |
| <span class="source-line-no">060</span><span id="line-60"> // we allow concurrent edit on the ns family in meta table</span> |
| <span class="source-line-no">061</span><span id="line-61"> return !proc.getTableName().equals(TableProcedureInterface.DUMMY_NAMESPACE_TABLE_NAME);</span> |
| <span class="source-line-no">062</span><span id="line-62"> case READ:</span> |
| <span class="source-line-no">063</span><span id="line-63"> case FLUSH:</span> |
| <span class="source-line-no">064</span><span id="line-64"> return false;</span> |
| <span class="source-line-no">065</span><span id="line-65"> // region operations are using the shared-lock on the table</span> |
| <span class="source-line-no">066</span><span id="line-66"> // and then they will grab an xlock on the region.</span> |
| <span class="source-line-no">067</span><span id="line-67"> case REGION_SPLIT:</span> |
| <span class="source-line-no">068</span><span id="line-68"> case REGION_MERGE:</span> |
| <span class="source-line-no">069</span><span id="line-69"> case REGION_ASSIGN:</span> |
| <span class="source-line-no">070</span><span id="line-70"> case REGION_UNASSIGN:</span> |
| <span class="source-line-no">071</span><span id="line-71"> case REGION_EDIT:</span> |
| <span class="source-line-no">072</span><span id="line-72"> case REGION_GC:</span> |
| <span class="source-line-no">073</span><span id="line-73"> case MERGED_REGIONS_GC:</span> |
| <span class="source-line-no">074</span><span id="line-74"> case REGION_SNAPSHOT:</span> |
| <span class="source-line-no">075</span><span id="line-75"> case REGION_TRUNCATE:</span> |
| <span class="source-line-no">076</span><span id="line-76"> return false;</span> |
| <span class="source-line-no">077</span><span id="line-77"> default:</span> |
| <span class="source-line-no">078</span><span id="line-78"> break;</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"> throw new UnsupportedOperationException("unexpected type " + proc.getTableOperationType());</span> |
| <span class="source-line-no">081</span><span id="line-81"> }</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> @Override</span> |
| <span class="source-line-no">084</span><span id="line-84"> public String toString() {</span> |
| <span class="source-line-no">085</span><span id="line-85"> return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString())</span> |
| <span class="source-line-no">086</span><span id="line-86"> .append("namespaceLockStatus", namespaceLockStatus.describeLockStatus()).build();</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88">}</span> |
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