opendaylight/config/config-manager/src/test/java/org/opendaylight/controller/config/manager/testingservices/parallelapsp/TestingParallelAPSPModule.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.parallelapsp;
   9
  10 import com.google.common.base.Strings;
  11 import org.opendaylight.controller.config.api.DependencyResolver;
  12 import org.opendaylight.controller.config.api.JmxAttribute;
  13 import org.opendaylight.controller.config.api.ModuleIdentifier;
  14 import org.opendaylight.controller.config.api.annotations.RequireInterface;
  15 import org.opendaylight.controller.config.manager.testingservices.seviceinterface.TestingThreadPoolServiceInterface;
  16 import org.opendaylight.controller.config.manager.testingservices.threadpool.TestingThreadPoolIfc;
  17 import org.opendaylight.controller.config.spi.Module;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 import javax.annotation.Nullable;
  22 import javax.annotation.concurrent.NotThreadSafe;
  23 import javax.management.ObjectName;
  24 import java.io.Closeable;
  25
  26 import static com.google.common.base.Preconditions.checkNotNull;
  27 import static com.google.common.base.Preconditions.checkState;
  28
  29 /**
  30  * Represents service that has dependency to thread pool.
  31  */
  32 @NotThreadSafe
  33 public class TestingParallelAPSPModule implements Module,
  34         TestingParallelAPSPConfigMXBean {
  35     private static final Logger logger = LoggerFactory
  36             .getLogger(TestingParallelAPSPModule.class);
  37
  38     private final DependencyResolver dependencyResolver;
  39     private final AutoCloseable oldCloseable;
  40     private final TestingParallelAPSPImpl oldInstance;
  41     private final ModuleIdentifier identifier;
  42     private ObjectName threadPoolON;
  43     private TestingParallelAPSPImpl instance;
  44     private String someParam;
  45
  46     public TestingParallelAPSPModule(ModuleIdentifier identifier,
  47             DependencyResolver dependencyResolver,
  48             @Nullable AutoCloseable oldCloseable,
  49             @Nullable TestingParallelAPSPImpl oldInstance) {
  50         this.identifier = identifier;
  51         this.dependencyResolver = dependencyResolver;
  52         this.oldCloseable = oldCloseable;
  53         this.oldInstance = oldInstance;
  54     }
  55
  56     @Override
  57     public ObjectName getThreadPool() {
  58         return threadPoolON;
  59     }
  60
  61     @RequireInterface(TestingThreadPoolServiceInterface.class)
  62     @Override
  63     public void setThreadPool(ObjectName threadPoolName) {
  64         this.threadPoolON = threadPoolName;
  65     }
  66
  67     @Override
  68     public String getSomeParam() {
  69         return someParam;
  70     }
  71
  72     @Override
  73     public void setSomeParam(String someParam) {
  74         this.someParam = someParam;
  75     }
  76
  77     @Override
  78     public Integer getMaxNumberOfThreads() {
  79         if (instance == null)
  80             return null;
  81         return instance.getMaxNumberOfThreads();
  82     }
  83
  84     // this would be generated:
  85     private final JmxAttribute threadPoolONJMXAttribute = new JmxAttribute("threadPoolON");
  86
  87     @Override
  88     public void validate() {
  89         checkNotNull(threadPoolON, "Parameter 'threadPool' must be set");
  90         dependencyResolver.validateDependency(
  91                 TestingThreadPoolServiceInterface.class, threadPoolON,
  92                 threadPoolONJMXAttribute);
  93
  94         checkState(Strings.isNullOrEmpty(someParam) == false,
  95                 "Parameter 'SomeParam' is blank");
  96         // check that calling resolveInstance fails
  97         try {
  98             dependencyResolver.resolveInstance(TestingThreadPoolIfc.class,
  99                     threadPoolON, threadPoolONJMXAttribute);
 100             throw new RuntimeException("fail");
 101         } catch (IllegalStateException e) {
 102             checkState("Commit was not triggered".equals(e.getMessage()),
 103                     e.getMessage());
 104         }
 105     }
 106
 107     @Override
 108     public Closeable getInstance() {
 109         if (instance == null) {
 110             TestingThreadPoolIfc threadPoolInstance = dependencyResolver
 111                     .resolveInstance(TestingThreadPoolIfc.class, threadPoolON, threadPoolONJMXAttribute);
 112
 113             if (oldInstance != null) {
 114                 // changing thread pool is not supported
 115                 boolean reuse = threadPoolInstance == oldInstance.getThreadPool();
 116                 if (reuse) {
 117                     logger.debug("Reusing old instance");
 118                     instance = oldInstance;
 119                     instance.setSomeParam(someParam);
 120                 }
 121             }
 122             if (instance == null) {
 123                 logger.debug("Creating new instance");
 124                 if (oldCloseable != null) {
 125                     try {
 126                         oldCloseable.close();
 127                     } catch (Exception e) {
 128                         throw new RuntimeException(e);
 129                     }
 130                 }
 131                 instance = new TestingParallelAPSPImpl(threadPoolInstance,
 132                         someParam);
 133             }
 134         }
 135         return instance;
 136     }
 137
 138     @Override
 139     public ModuleIdentifier getIdentifier() {
 140         return identifier;
 141     }
 142
 143
 144 }