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

   1 /*
   2  * Copyright (c) 2013, 2017 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, TestingScheduledThreadPoolConfigBeanMXBean,
  27         RuntimeBeanRegistratorAwareModule, TestingScheduledThreadPoolServiceInterface {
  28
  29     private final ModuleIdentifier identifier;
  30     @Nullable
  31     private final AutoCloseable oldCloseable;
  32     @Nullable
  33     private final TestingScheduledThreadPoolImpl oldInstance;
  34
  35     private int threadCount = 10;
  36     private TestingScheduledThreadPoolImpl instance;
  37     private RootRuntimeBeanRegistrator runtimeBeanRegistrator;
  38     private boolean recreate;
  39
  40     public TestingScheduledThreadPoolModule(final ModuleIdentifier identifier,
  41             @Nullable final AutoCloseable oldCloseable, @Nullable final TestingScheduledThreadPoolImpl oldInstance) {
  42         this.identifier = identifier;
  43         this.oldCloseable = oldCloseable;
  44         this.oldInstance = oldInstance;
  45     }
  46
  47     @Override
  48     public void setRuntimeBeanRegistrator(final RootRuntimeBeanRegistrator runtimeBeanRegistrator) {
  49         this.runtimeBeanRegistrator = runtimeBeanRegistrator;
  50     }
  51
  52     @Override
  53     public void validate() {
  54         assertNull(runtimeBeanRegistrator);
  55         // check thread count
  56         checkState(threadCount > 0, "Parameter 'ThreadCount' must be greater than 0");
  57     }
  58
  59     @Override
  60     public boolean canReuse(final Module oldModule) {
  61         return getClass().isInstance(oldModule)
  62                 && getThreadCount() == ((TestingScheduledThreadPoolModule) oldModule).getThreadCount();
  63     }
  64
  65     @Override
  66     public int getThreadCount() {
  67         return threadCount;
  68     }
  69
  70     @Override
  71     public void setThreadCount(final int threadCount) {
  72         this.threadCount = threadCount;
  73     }
  74
  75     @Override
  76     @SuppressWarnings("IllegalCatch")
  77     public Closeable getInstance() {
  78         assertNotNull(runtimeBeanRegistrator);
  79         if (instance == null) {
  80             if (oldInstance != null && recreate == false) {
  81                 // reuse old instance
  82                 instance = oldInstance;
  83             }
  84             if (instance == null) {
  85                 if (oldCloseable != null) {
  86                     try {
  87                         oldCloseable.close();
  88                     } catch (final Exception e) {
  89                         throw new RuntimeException(e);
  90                     }
  91                 }
  92                 // close old threadpool and esp. unregister runtime beans
  93                 instance = new TestingScheduledThreadPoolImpl(runtimeBeanRegistrator, threadCount);
  94             }
  95         }
  96         return instance;
  97     }
  98
  99     // getters and setters
 100     @Override
 101     public boolean isRecreate() {
 102         return recreate;
 103     }
 104
 105     @Override
 106     public void setRecreate(final boolean recreate) {
 107         this.recreate = recreate;
 108     }
 109
 110     @Override
 111     public ModuleIdentifier getIdentifier() {
 112         return identifier;
 113     }
 114 }