protocol/netconf-server/src/main/java/org/opendaylight/netconf/server/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 package org.opendaylight.netconf.server.osgi;
   9
  10 import com.google.common.collect.HashMultimap;
  11 import com.google.common.collect.ImmutableSet;
  12 import com.google.common.collect.Multimap;
  13 import com.google.common.collect.Multimaps;
  14 import java.util.HashMap;
  15 import java.util.HashSet;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Set;
  19 import java.util.concurrent.ConcurrentHashMap;
  20 import org.opendaylight.netconf.api.capability.Capability;
  21 import org.opendaylight.netconf.api.monitoring.CapabilityListener;
  22 import org.opendaylight.netconf.server.api.operations.NetconfOperation;
  23 import org.opendaylight.netconf.server.api.operations.NetconfOperationService;
  24 import org.opendaylight.netconf.server.api.operations.NetconfOperationServiceFactory;
  25 import org.opendaylight.netconf.server.api.operations.NetconfOperationServiceFactoryListener;
  26 import org.opendaylight.yangtools.concepts.AbstractRegistration;
  27 import org.opendaylight.yangtools.concepts.Registration;
  28
  29 /**
  30  * NetconfOperationService aggregator. Makes a collection of operation services accessible as one.
  31  */
  32 // Non-final for OSGi DS
  33 // FIXME: split into abstract class for the multiple uses we have, which really is about which construct is being
  34 //        invoked
  35 public class AggregatedNetconfOperationServiceFactory
  36         implements NetconfOperationServiceFactory, NetconfOperationServiceFactoryListener, AutoCloseable {
  37     private final Set<NetconfOperationServiceFactory> factories = ConcurrentHashMap.newKeySet();
  38     private final Multimap<NetconfOperationServiceFactory, Registration> registrations =
  39             Multimaps.synchronizedMultimap(HashMultimap.create());
  40     private final Set<CapabilityListener> listeners = ConcurrentHashMap.newKeySet();
  41
  42     public AggregatedNetconfOperationServiceFactory() {
  43     }
  44
  45     public AggregatedNetconfOperationServiceFactory(final List<NetconfOperationServiceFactory> mappers) {
  46         mappers.forEach(this::onAddNetconfOperationServiceFactory);
  47     }
  48
  49     @Override
  50     public final synchronized void onAddNetconfOperationServiceFactory(final NetconfOperationServiceFactory service) {
  51         factories.add(service);
  52
  53         for (final CapabilityListener listener : listeners) {
  54             registrations.put(service, service.registerCapabilityListener(listener));
  55         }
  56     }
  57
  58     @Override
  59     public final synchronized void onRemoveNetconfOperationServiceFactory(
  60             final NetconfOperationServiceFactory service) {
  61         factories.remove(service);
  62         registrations.removeAll(service).forEach(Registration::close);
  63     }
  64
  65     @Override
  66     public final Set<Capability> getCapabilities() {
  67         final Set<Capability> capabilities = new HashSet<>();
  68         for (final NetconfOperationServiceFactory factory : factories) {
  69             capabilities.addAll(factory.getCapabilities());
  70         }
  71         return capabilities;
  72     }
  73
  74     @Override
  75     public final synchronized Registration registerCapabilityListener(final CapabilityListener listener) {
  76         final Map<NetconfOperationServiceFactory, Registration> regs = new HashMap<>();
  77
  78         for (final NetconfOperationServiceFactory factory : factories) {
  79             regs.put(factory, factory.registerCapabilityListener(listener));
  80         }
  81         listeners.add(listener);
  82
  83         return new AbstractRegistration() {
  84
  85             @Override
  86             protected void removeRegistration() {
  87                 synchronized (AggregatedNetconfOperationServiceFactory.this) {
  88                     listeners.remove(listener);
  89                     regs.values().forEach(Registration::close);
  90                     for (var reg : regs.entrySet()) {
  91                         registrations.remove(reg.getKey(), reg.getValue());
  92                     }
  93                 }
  94             }
  95         };
  96     }
  97
  98     @Override
  99     public final synchronized NetconfOperationService createService(final String netconfSessionIdForReporting) {
 100         return new AggregatedNetconfOperation(factories, netconfSessionIdForReporting);
 101     }
 102
 103     @Override
 104     public synchronized void close() {
 105         factories.clear();
 106         registrations.values().forEach(Registration::close);
 107         registrations.clear();
 108         listeners.clear();
 109     }
 110
 111     private static final class AggregatedNetconfOperation implements NetconfOperationService {
 112         private final ImmutableSet<NetconfOperationService> services;
 113
 114         AggregatedNetconfOperation(final Set<NetconfOperationServiceFactory> factories,
 115                                    final String netconfSessionIdForReporting) {
 116             services = factories.stream()
 117                 .map(factory -> factory.createService(netconfSessionIdForReporting))
 118                 .collect(ImmutableSet.toImmutableSet());
 119         }
 120
 121         @Override
 122         public Set<NetconfOperation> getNetconfOperations() {
 123             return services.stream()
 124                 .flatMap(service -> service.getNetconfOperations().stream())
 125                 .collect(ImmutableSet.toImmutableSet());
 126         }
 127
 128         @Override
 129         public void close() {
 130             services.forEach(NetconfOperationService::close);
 131         }
 132     }
 133 }