netconf/netconf-impl/src/main/java/org/opendaylight/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.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.Multimaps;
  17 import com.google.common.collect.Sets;
  18 import io.netty.util.internal.ConcurrentSet;
  19 import java.util.HashSet;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.Set;
  23 import org.opendaylight.controller.config.util.capability.Capability;
  24 import org.opendaylight.netconf.mapping.api.NetconfOperation;
  25 import org.opendaylight.netconf.mapping.api.NetconfOperationService;
  26 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactory;
  27 import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactoryListener;
  28 import org.opendaylight.netconf.util.CloseableUtil;
  29 import org.opendaylight.netconf.api.monitoring.CapabilityListener;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * NetconfOperationService aggregator. Makes a collection of operation services accessible as one.
  35  */
  36 public class AggregatedNetconfOperationServiceFactory implements NetconfOperationServiceFactory, NetconfOperationServiceFactoryListener, AutoCloseable {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(AggregatedNetconfOperationServiceFactory.class);
  39
  40     private final Set<NetconfOperationServiceFactory> factories = new ConcurrentSet<>();
  41     private final Multimap<NetconfOperationServiceFactory, AutoCloseable> registrations = Multimaps.synchronizedMultimap(HashMultimap.create());
  42     private final Set<CapabilityListener> listeners = new ConcurrentSet<>();
  43
  44     public AggregatedNetconfOperationServiceFactory() {
  45     }
  46
  47     public AggregatedNetconfOperationServiceFactory(final List<NetconfOperationServiceFactory> mappers) {
  48         mappers.forEach(this::onAddNetconfOperationServiceFactory);
  49     }
  50
  51     @Override
  52     public synchronized void onAddNetconfOperationServiceFactory(NetconfOperationServiceFactory service) {
  53         factories.add(service);
  54
  55         for (final CapabilityListener listener : listeners) {
  56             AutoCloseable reg = service.registerCapabilityListener(listener);
  57             registrations.put(service, reg);
  58         }
  59     }
  60
  61     @Override
  62     public synchronized void onRemoveNetconfOperationServiceFactory(NetconfOperationServiceFactory service) {
  63         factories.remove(service);
  64
  65         for (final AutoCloseable autoCloseable : registrations.get(service)) {
  66             try {
  67                 autoCloseable.close();
  68             } catch (Exception e) {
  69                 LOG.warn("Unable to close listener registration", e);
  70             }
  71         }
  72
  73         registrations.removeAll(service);
  74     }
  75
  76     @Override
  77     public Set<Capability> getCapabilities() {
  78         final HashSet<Capability> capabilities = Sets.newHashSet();
  79         for (final NetconfOperationServiceFactory factory : factories) {
  80             capabilities.addAll(factory.getCapabilities());
  81         }
  82         return capabilities;
  83     }
  84
  85     @Override
  86     public synchronized AutoCloseable registerCapabilityListener(final CapabilityListener listener) {
  87         final Map<NetconfOperationServiceFactory, AutoCloseable> regs = Maps.newHashMap();
  88
  89         for (final NetconfOperationServiceFactory factory : factories) {
  90             final AutoCloseable reg = factory.registerCapabilityListener(listener);
  91             regs.put(factory, reg);
  92         }
  93         listeners.add(listener);
  94
  95         return new AutoCloseable() {
  96             @Override
  97             public void close() throws Exception {
  98                 synchronized (AggregatedNetconfOperationServiceFactory.this) {
  99                     listeners.remove(listener);
 100                     CloseableUtil.closeAll(regs.values());
 101                     for (final Map.Entry<NetconfOperationServiceFactory, AutoCloseable> reg : regs.entrySet()) {
 102                         registrations.remove(reg.getKey(), reg.getValue());
 103                     }
 104                 }
 105             }
 106         };
 107     }
 108
 109     @Override
 110     public synchronized NetconfOperationService createService(final String netconfSessionIdForReporting) {
 111         return new AggregatedNetconfOperation(factories, netconfSessionIdForReporting);
 112     }
 113
 114     @Override
 115     public synchronized void close() throws Exception {
 116         factories.clear();
 117         for (AutoCloseable reg : registrations.values()) {
 118             reg.close();
 119         }
 120         registrations.clear();
 121         listeners.clear();
 122     }
 123
 124     private static final class AggregatedNetconfOperation implements NetconfOperationService {
 125
 126         private final Set<NetconfOperationService> services;
 127
 128         public AggregatedNetconfOperation(final Set<NetconfOperationServiceFactory> factories, final String netconfSessionIdForReporting) {
 129             final Builder<NetconfOperationService> b = ImmutableSet.builder();
 130             for (final NetconfOperationServiceFactory factory : factories) {
 131                 b.add(factory.createService(netconfSessionIdForReporting));
 132             }
 133             this.services = b.build();
 134         }
 135
 136         @Override
 137         public Set<NetconfOperation> getNetconfOperations() {
 138             final HashSet<NetconfOperation> operations = Sets.newHashSet();
 139             for (final NetconfOperationService service : services) {
 140                 operations.addAll(service.getNetconfOperations());
 141             }
 142             return operations;
 143         }
 144
 145         @Override
 146         public void close() {
 147             try {
 148                 CloseableUtil.closeAll(services);
 149             } catch (final Exception e) {
 150                 throw new IllegalStateException("Unable to properly close all aggregated services", e);
 151             }
 152         }
 153     }
 154 }