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1   /*
2    * Copyright (c) 2011.  The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.hadoop.hbase.hbql.executor;
22  
23  import org.apache.hadoop.hbase.hbql.client.HBqlException;
24  import org.apache.hadoop.hbase.hbql.client.QueryExecutorPoolManager;
25  
26  import java.util.List;
27  
28  public class QueryExecutorPoolDefinition {
29  
30      private final String                 poolName;
31      private final List<ExecutorProperty> executorPropertyList;
32  
33      private ExecutorProperty maxExecutorPoolSize = null;
34      private ExecutorProperty minThreadCount      = null;
35      private ExecutorProperty maxThreadCount      = null;
36      private ExecutorProperty keepAliveSecs       = null;
37      private ExecutorProperty threadsReadResults  = null;
38      private ExecutorProperty completionQueueSize = null;
39  
40      public QueryExecutorPoolDefinition(final String poolName, final List<ExecutorProperty> executorPropertyList) {
41          this.poolName = poolName;
42          this.executorPropertyList = executorPropertyList;
43      }
44  
45      public String getPoolName() {
46          return this.poolName;
47      }
48  
49      private List<ExecutorProperty> getExecutorPoolPropertyList() {
50          return this.executorPropertyList;
51      }
52  
53      private ExecutorProperty validateProperty(final ExecutorProperty assignee,
54                                                final ExecutorProperty value) throws HBqlException {
55          if (assignee != null)
56              throw new HBqlException("Multiple " + value.getPropertyType().getDescription()
57                                      + " values for " + this.getPoolName() + " not allowed");
58          return value;
59      }
60  
61      public void validateExecutorPoolPropertyList() throws HBqlException {
62  
63          if (this.getExecutorPoolPropertyList() == null)
64              return;
65  
66          for (final ExecutorProperty executorProperty : this.getExecutorPoolPropertyList()) {
67  
68              executorProperty.validate();
69  
70              switch (executorProperty.getEnumType()) {
71  
72                  case MAX_EXECUTOR_POOL_SIZE:
73                      this.maxExecutorPoolSize = this.validateProperty(this.maxExecutorPoolSize, executorProperty);
74                      break;
75  
76                  case MIN_THREAD_COUNT:
77                      this.minThreadCount = this.validateProperty(this.minThreadCount, executorProperty);
78                      break;
79  
80                  case MAX_THREAD_COUNT:
81                      this.maxThreadCount = this.validateProperty(this.maxThreadCount, executorProperty);
82                      break;
83  
84                  case KEEP_ALIVE_SECS:
85                      this.keepAliveSecs = this.validateProperty(this.keepAliveSecs, executorProperty);
86                      break;
87  
88                  case THREADS_READ_RESULTS:
89                      this.threadsReadResults = this.validateProperty(this.threadsReadResults, executorProperty);
90                      break;
91  
92                  case COMPLETION_QUEUE_SIZE:
93                      this.completionQueueSize = this.validateProperty(this.completionQueueSize, executorProperty);
94                      break;
95              }
96          }
97      }
98  
99      public int getMaxExecutorPoolSize() throws HBqlException {
100         if (this.maxExecutorPoolSize != null)
101             return this.maxExecutorPoolSize.getIntegerValue();
102         else
103             return QueryExecutorPoolManager.defaultMaxExecutorPoolSize;
104     }
105 
106     public int getMinThreadCount() throws HBqlException {
107         if (this.minThreadCount != null)
108             return this.minThreadCount.getIntegerValue();
109         else
110             return QueryExecutorPoolManager.defaultMinThreadCount;
111     }
112 
113     public int getMaxThreadCount() throws HBqlException {
114         if (this.maxThreadCount != null)
115             return this.maxThreadCount.getIntegerValue();
116         else
117             return QueryExecutorPoolManager.defaultMaxThreadCount;
118     }
119 
120     public long getKeepAliveSecs() throws HBqlException {
121         if (this.keepAliveSecs != null)
122             return this.keepAliveSecs.getIntegerValue();
123         else
124             return QueryExecutorPoolManager.defaultKeepAliveSecs;
125     }
126 
127     public boolean getThreadsReadResults() throws HBqlException {
128         if (this.threadsReadResults != null)
129             return this.threadsReadResults.getBooleanValue();
130         else
131             return QueryExecutorPoolManager.defaultThreadsReadResults;
132     }
133 
134     public int getCompletionQueueSize() throws HBqlException {
135         if (this.completionQueueSize != null)
136             return this.completionQueueSize.getIntegerValue();
137         else
138             return QueryExecutorPoolManager.defaultCompletionQueueSize;
139     }
140 
141     public String asString() {
142         try {
143             return " MAX_EXECUTOR_POOL_SIZE : " + this.getMaxExecutorPoolSize()
144                    + ", MIN_THREAD_COUNT : " + this.getMinThreadCount()
145                    + ", MAX_THREAD_COUNT : " + this.getMaxThreadCount()
146                    + ", KEEP_ALIVE_SECS : " + this.getKeepAliveSecs()
147                    + ", THREADS_READ_RESULTS : " + this.getThreadsReadResults()
148                    + ", COMPLETION_QUEUE_SIZE : " + this.getCompletionQueueSize();
149         }
150         catch (HBqlException e) {
151             return "Invalid expression";
152         }
153     }
154 }