opendaylight/config/config-manager/src/test/java/org/opendaylight/controller/config/manager/testingservices/scheduledthreadpool/TestingScheduledThreadPoolModule.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.config.manager.testingservices.scheduledthreadpool;
   9
  10 import static com.google.common.base.Preconditions.checkState;
  11 import static org.junit.Assert.assertNotNull;
  12 import static org.junit.Assert.assertNull;
  13
  14 import java.io.Closeable;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.controller.config.api.ModuleIdentifier;
  17 import org.opendaylight.controller.config.api.RuntimeBeanRegistratorAwareModule;
  18 import org.opendaylight.controller.config.api.runtime.RootRuntimeBeanRegistrator;
  19 import org.opendaylight.controller.config.manager.testingservices.seviceinterface.TestingScheduledThreadPoolServiceInterface;
  20 import org.opendaylight.controller.config.spi.Module;
  21
  22 /**
  23  * This class has two exported interfaces and two runtime beans. Recreation is
  24  * triggered by setting Recreate attribute to true.
  25  */
  26 public class TestingScheduledThreadPoolModule implements Module,
  27         TestingScheduledThreadPoolConfigBeanMXBean,
  28         RuntimeBeanRegistratorAwareModule,
  29         TestingScheduledThreadPoolServiceInterface {
  30
  31     private final ModuleIdentifier identifier;
  32     @Nullable
  33     private final AutoCloseable oldCloseable;
  34     @Nullable
  35     private final TestingScheduledThreadPoolImpl oldInstance;
  36
  37     private int threadCount = 10;
  38     private TestingScheduledThreadPoolImpl instance;
  39     private RootRuntimeBeanRegistrator runtimeBeanRegistrator;
  40     private boolean recreate;
  41
  42     public TestingScheduledThreadPoolModule(ModuleIdentifier identifier,
  43             @Nullable AutoCloseable oldCloseable,
  44             @Nullable TestingScheduledThreadPoolImpl oldInstance) {
  45         this.identifier = identifier;
  46         this.oldCloseable = oldCloseable;
  47         this.oldInstance = oldInstance;
  48     }
  49
  50     @Override
  51     public void setRuntimeBeanRegistrator(
  52             RootRuntimeBeanRegistrator runtimeBeanRegistrator) {
  53         this.runtimeBeanRegistrator = runtimeBeanRegistrator;
  54     }
  55
  56     @Override
  57     public void validate() {
  58         assertNull(runtimeBeanRegistrator);
  59         // check thread count
  60         checkState(threadCount > 0,
  61                 "Parameter 'ThreadCount' must be greater than 0");
  62     }
  63
  64     @Override
  65     public boolean canReuse(final Module oldModule) {
  66         return getClass().isInstance(oldModule) && getThreadCount() ==
  67                 ((TestingScheduledThreadPoolModule) oldModule).getThreadCount();
  68     }
  69
  70     @Override
  71     public int getThreadCount() {
  72         return threadCount;
  73     }
  74
  75     @Override
  76     public void setThreadCount(int threadCount) {
  77         this.threadCount = threadCount;
  78     }
  79
  80     @Override
  81     public Closeable getInstance() {
  82         assertNotNull(runtimeBeanRegistrator);
  83         if (instance == null) {
  84             if (oldInstance != null && recreate == false) {
  85                 // reuse old instance
  86                 instance = oldInstance;
  87             }
  88             if (instance == null) {
  89                 if (oldCloseable != null) {
  90                     try {
  91                         oldCloseable.close();
  92                     } catch (Exception e) {
  93                         throw new RuntimeException(e);
  94                     }
  95                 }
  96                 // close old threadpool and esp. unregister runtime beans
  97                 instance = new TestingScheduledThreadPoolImpl(
  98                         runtimeBeanRegistrator, threadCount);
  99             }
 100         }
 101         return instance;
 102     }
 103
 104     // getters and setters
 105     @Override
 106     public boolean isRecreate() {
 107         return recreate;
 108     }
 109
 110     @Override
 111     public void setRecreate(boolean recreate) {
 112         this.recreate = recreate;
 113     }
 114
 115     @Override
 116     public ModuleIdentifier getIdentifier() {
 117         return identifier;
 118     }
 119
 120
 121 }