opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/dependencyresolver/ModulesHolder.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.impl.dependencyresolver;
   9
  10 import java.util.ArrayList;
  11 import java.util.Collections;
  12 import java.util.HashMap;
  13 import java.util.HashSet;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.Set;
  17
  18 import javax.annotation.concurrent.GuardedBy;
  19 import javax.management.InstanceAlreadyExistsException;
  20
  21 import org.opendaylight.controller.config.api.JmxAttribute;
  22 import org.opendaylight.controller.config.api.JmxAttributeValidationException;
  23 import org.opendaylight.controller.config.api.ModuleIdentifier;
  24 import org.opendaylight.controller.config.manager.impl.CommitInfo;
  25 import org.opendaylight.controller.config.manager.impl.DestroyedModule;
  26 import org.opendaylight.controller.config.manager.impl.ModuleInternalTransactionalInfo;
  27 import org.opendaylight.controller.config.spi.Module;
  28 import org.opendaylight.controller.config.spi.ModuleFactory;
  29
  30 /**
  31  * Represents modules to be committed.
  32  */
  33 class ModulesHolder implements TransactionHolder {
  34     private final String transactionName;
  35     @GuardedBy("this")
  36     private final Map<ModuleIdentifier, ModuleInternalTransactionalInfo> commitMap = new HashMap<>();
  37
  38     @GuardedBy("this")
  39     private final Set<ModuleInternalTransactionalInfo> unorderedDestroyedFromPreviousTransactions = new HashSet<>();
  40
  41     ModulesHolder(String transactionName) {
  42         this.transactionName = transactionName;
  43     }
  44
  45     @Override
  46     public CommitInfo toCommitInfo() {
  47         List<DestroyedModule> orderedDestroyedFromPreviousTransactions = new ArrayList<>(
  48                 unorderedDestroyedFromPreviousTransactions.size());
  49         for (ModuleInternalTransactionalInfo toBeDestroyed : unorderedDestroyedFromPreviousTransactions) {
  50             orderedDestroyedFromPreviousTransactions.add(toBeDestroyed
  51                     .toDestroyedModule());
  52         }
  53         Collections.sort(orderedDestroyedFromPreviousTransactions);
  54         return new CommitInfo(orderedDestroyedFromPreviousTransactions,
  55                 commitMap);
  56     }
  57
  58     private ModuleInternalTransactionalInfo findModuleInternalTransactionalInfo(
  59             ModuleIdentifier moduleIdentifier,
  60             JmxAttribute jmxAttributeForReporting) {
  61         ModuleInternalTransactionalInfo moduleInternalTransactionalInfo = commitMap
  62                 .get(moduleIdentifier);
  63         JmxAttributeValidationException.checkNotNull(
  64                 moduleInternalTransactionalInfo, "Module " + moduleIdentifier
  65                         + "" + " not found in transaction " + transactionName,
  66                 jmxAttributeForReporting);
  67         return moduleInternalTransactionalInfo;
  68     }
  69
  70     @Override
  71     public Module findModule(ModuleIdentifier moduleIdentifier,
  72             JmxAttribute jmxAttributeForReporting) {
  73         return findModuleInternalTransactionalInfo(moduleIdentifier,
  74                 jmxAttributeForReporting).getModule();
  75     }
  76
  77     @Override
  78     public ModuleFactory findModuleFactory(ModuleIdentifier moduleIdentifier,
  79             JmxAttribute jmxAttributeForReporting) {
  80         return findModuleInternalTransactionalInfo(moduleIdentifier,
  81                 jmxAttributeForReporting).getModuleFactory();
  82     }
  83
  84     @Override
  85     public Map<ModuleIdentifier, Module> getAllModules() {
  86         Map<ModuleIdentifier, Module> result = new HashMap<>();
  87         for (ModuleInternalTransactionalInfo entry : commitMap.values()) {
  88             ModuleIdentifier name = entry.getName();
  89             result.put(name, entry.getModule());
  90         }
  91         return result;
  92     }
  93
  94     @Override
  95     public void put(
  96             ModuleInternalTransactionalInfo moduleInternalTransactionalInfo) {
  97         commitMap.put(moduleInternalTransactionalInfo.getName(),
  98                 moduleInternalTransactionalInfo);
  99     }
 100
 101     @Override
 102     public ModuleInternalTransactionalInfo destroyModule(
 103             ModuleIdentifier moduleIdentifier) {
 104         ModuleInternalTransactionalInfo found = commitMap
 105                 .remove(moduleIdentifier);
 106         if (found == null)
 107             throw new IllegalStateException("Not found:" + moduleIdentifier);
 108         if (found.hasOldModule()) {
 109             unorderedDestroyedFromPreviousTransactions.add(found);
 110         }
 111         return found;
 112     }
 113
 114     @Override
 115     public void assertNotExists(ModuleIdentifier moduleIdentifier)
 116             throws InstanceAlreadyExistsException {
 117         if (commitMap.containsKey(moduleIdentifier)) {
 118             throw new InstanceAlreadyExistsException(
 119                     "There is an instance registered with name "
 120                             + moduleIdentifier);
 121         }
 122     }
 123 }