opendaylight/netconf/netconf-impl/src/main/java/org/opendaylight/controller/netconf/impl/osgi/AggregatedNetconfOperationServiceFactory.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
   9 package org.opendaylight.controller.netconf.impl.osgi;
  10
  11 import com.google.common.collect.HashMultimap;
  12 import com.google.common.collect.ImmutableSet;
  13 import com.google.common.collect.ImmutableSet.Builder;
  14 import com.google.common.collect.Maps;
  15 import com.google.common.collect.Multimap;
  16 import com.google.common.collect.Sets;
  17 import java.util.HashSet;
  18 import java.util.Map;
  19 import java.util.Set;
  20 import org.opendaylight.controller.netconf.api.Capability;
  21 import org.opendaylight.controller.netconf.api.monitoring.CapabilityListener;
  22 import org.opendaylight.controller.netconf.mapping.api.NetconfOperation;
  23 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationService;
  24 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
  25 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactoryListener;
  26 import org.opendaylight.controller.netconf.util.CloseableUtil;
  27
  28 /**
  29  * NetconfOperationService aggregator. Makes a collection of operation services accessible as one.
  30  */
  31 public class AggregatedNetconfOperationServiceFactory implements NetconfOperationServiceFactory, NetconfOperationServiceFactoryListener, AutoCloseable {
  32
  33     private final Set<NetconfOperationServiceFactory> factories = new HashSet<>();
  34     private final Multimap<NetconfOperationServiceFactory, AutoCloseable> registrations = HashMultimap.create();
  35     private final Set<CapabilityListener> listeners = Sets.newHashSet();
  36
  37     @Override
  38     public synchronized void onAddNetconfOperationServiceFactory(NetconfOperationServiceFactory service) {
  39         factories.add(service);
  40
  41         for (final CapabilityListener listener : listeners) {
  42             AutoCloseable reg = service.registerCapabilityListener(listener);
  43             registrations.put(service, reg);
  44         }
  45     }
  46
  47     @Override
  48     public synchronized void onRemoveNetconfOperationServiceFactory(NetconfOperationServiceFactory service) {
  49         factories.remove(service);
  50
  51         for (final AutoCloseable autoCloseable : registrations.get(service)) {
  52             try {
  53                 autoCloseable.close();
  54             } catch (Exception e) {
  55                 // FIXME Issue warning
  56             }
  57         }
  58
  59         registrations.removeAll(service);
  60     }
  61
  62     @Override
  63     public synchronized Set<Capability> getCapabilities() {
  64         final HashSet<Capability> capabilities = Sets.newHashSet();
  65         for (final NetconfOperationServiceFactory factory : factories) {
  66             capabilities.addAll(factory.getCapabilities());
  67         }
  68         return capabilities;
  69     }
  70
  71     @Override
  72     public synchronized AutoCloseable registerCapabilityListener(final CapabilityListener listener) {
  73         final Map<NetconfOperationServiceFactory, AutoCloseable> regs = Maps.newHashMap();
  74
  75         for (final NetconfOperationServiceFactory factory : factories) {
  76             final AutoCloseable reg = factory.registerCapabilityListener(listener);
  77             regs.put(factory, reg);
  78         }
  79         listeners.add(listener);
  80
  81         return new AutoCloseable() {
  82             @Override
  83             public void close() throws Exception {
  84                 synchronized (AggregatedNetconfOperationServiceFactory.this) {
  85                     listeners.remove(listener);
  86                     CloseableUtil.closeAll(regs.values());
  87                     for (final Map.Entry<NetconfOperationServiceFactory, AutoCloseable> reg : regs.entrySet()) {
  88                         registrations.remove(reg.getKey(), reg.getValue());
  89                     }
  90                 }
  91             }
  92         };
  93     }
  94
  95     @Override
  96     public synchronized NetconfOperationService createService(final String netconfSessionIdForReporting) {
  97         return new AggregatedNetconfOperation(factories, netconfSessionIdForReporting);
  98     }
  99
 100     @Override
 101     public synchronized void close() throws Exception {
 102         factories.clear();
 103         for (AutoCloseable reg : registrations.values()) {
 104             reg.close();
 105         }
 106         registrations.clear();
 107         listeners.clear();
 108     }
 109
 110     private static final class AggregatedNetconfOperation implements NetconfOperationService {
 111
 112         private final Set<NetconfOperationService> services;
 113
 114         public AggregatedNetconfOperation(final Set<NetconfOperationServiceFactory> factories, final String netconfSessionIdForReporting) {
 115             final Builder<NetconfOperationService> b = ImmutableSet.builder();
 116             for (final NetconfOperationServiceFactory factory : factories) {
 117                 b.add(factory.createService(netconfSessionIdForReporting));
 118             }
 119             this.services = b.build();
 120         }
 121
 122         @Override
 123         public Set<NetconfOperation> getNetconfOperations() {
 124             final HashSet<NetconfOperation> operations = Sets.newHashSet();
 125             for (final NetconfOperationService service : services) {
 126                 operations.addAll(service.getNetconfOperations());
 127             }
 128             return operations;
 129         }
 130
 131         @Override
 132         public void close() {
 133             try {
 134                 CloseableUtil.closeAll(services);
 135             } catch (final Exception e) {
 136                 throw new IllegalStateException("Unable to properly close all aggregated services", e);
 137             }
 138         }
 139     }
 140 }