/*
* Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.sal.dom.broker;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.ImmutableClassToInstanceMap;
import com.google.common.util.concurrent.CheckedFuture;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcAvailabilityListener;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationRegistration;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcProviderService;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
import org.opendaylight.controller.md.sal.dom.broker.impl.DOMRpcRouter;
import org.opendaylight.controller.sal.core.api.Broker;
import org.opendaylight.controller.sal.core.api.BrokerService;
import org.opendaylight.controller.sal.core.api.Consumer;
import org.opendaylight.controller.sal.core.api.Provider;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
import org.osgi.framework.BundleContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class BrokerImpl implements Broker, DOMRpcProviderService, DOMRpcService, AutoCloseable {
private final static Logger log = LoggerFactory.getLogger(BrokerImpl.class);
// Broker Generic Context
private final Set<ConsumerContextImpl> sessions = Collections
.synchronizedSet(new HashSet<ConsumerContextImpl>());
private final Set<ProviderContextImpl> providerSessions = Collections
.synchronizedSet(new HashSet<ProviderContextImpl>());
private AutoCloseable deactivator;
private final DOMRpcService rpcService;
private final DOMRpcProviderService rpcProvider;
private final ClassToInstanceMap<BrokerService> services;
public BrokerImpl(final DOMRpcRouter router,final ClassToInstanceMap<BrokerService> services) {
this(router, router, services);
}
public BrokerImpl(final DOMRpcService rpcService, final DOMRpcProviderService rpcProvider,
final ClassToInstanceMap<BrokerService> services) {
this.rpcService = Preconditions.checkNotNull(rpcService, "DOMRpcService must not be null");
this.rpcProvider = Preconditions.checkNotNull(rpcProvider, "DOMRpcProviderService must not be null");
this.services = ImmutableClassToInstanceMap.copyOf(services);
}
@Override
public ConsumerSession registerConsumer(final Consumer consumer,
final BundleContext ctx) {
return registerConsumer(consumer);
}
@Override
public ProviderSession registerProvider(final Provider provider,
final BundleContext ctx) {
return registerProvider(provider);
}
// Validation
private void checkPredicates(final Provider prov) {
Preconditions.checkNotNull(prov, "Provider should not be null.");
for (final ProviderContextImpl session : providerSessions) {
if (prov.equals(session.getProvider())) {
throw new IllegalStateException("Provider already registered");
}
}
}
private void checkPredicates(final Consumer cons) {
Preconditions.checkNotNull(cons, "Consumer should not be null.");
for (final ConsumerContextImpl session : sessions) {
if (cons.equals(session.getConsumer())) {
throw new IllegalStateException("Consumer already registered");
}
}
}
// Private Factory methods
private ConsumerContextImpl newSessionFor(final Consumer provider) {
final ConsumerContextImpl ret = new ConsumerContextImpl(provider, this);
return ret;
}
private ProviderContextImpl newSessionFor(final Provider provider) {
final ProviderContextImpl ret = new ProviderContextImpl(provider, this);
return ret;
}
protected void consumerSessionClosed(
final ConsumerContextImpl consumerContextImpl) {
sessions.remove(consumerContextImpl);
providerSessions.remove(consumerContextImpl);
}
@Override
public void close() throws Exception {
if (deactivator != null) {
deactivator.close();
deactivator = null;
}
}
/**
* @return the deactivator
*/
public AutoCloseable getDeactivator() {
return deactivator;
}
/**
* @param deactivator
* the deactivator to set
*/
public void setDeactivator(final AutoCloseable deactivator) {
this.deactivator = deactivator;
}
protected <T extends BrokerService> Optional<T> getGlobalService(final Class<T> service) {
return Optional.fromNullable(services.getInstance(service));
}
@Override
public ConsumerSession registerConsumer(final Consumer consumer) {
checkPredicates(consumer);
log.trace("Registering consumer {}", consumer);
final ConsumerContextImpl session = newSessionFor(consumer);
consumer.onSessionInitiated(session);
sessions.add(session);
return session;
}
@Override
public ProviderSession registerProvider(final Provider provider) {
checkPredicates(provider);
final ProviderContextImpl session = newSessionFor(provider);
provider.onSessionInitiated(session);
providerSessions.add(session);
return session;
}
@Nonnull
@Override
public <T extends DOMRpcImplementation> DOMRpcImplementationRegistration<T> registerRpcImplementation(@Nonnull final T implementation, @Nonnull final DOMRpcIdentifier... rpcs) {
return rpcProvider.registerRpcImplementation(implementation, rpcs);
}
@Nonnull
@Override
public <T extends DOMRpcImplementation> DOMRpcImplementationRegistration<T> registerRpcImplementation(@Nonnull final T implementation, @Nonnull final Set<DOMRpcIdentifier> rpcs) {
return rpcProvider.registerRpcImplementation(implementation, rpcs);
}
@Nonnull
@Override
public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final SchemaPath type, @Nullable final NormalizedNode<?, ?> input) {
return rpcService.invokeRpc(type, input);
}
@Nonnull
@Override
public <T extends DOMRpcAvailabilityListener> ListenerRegistration<T> registerRpcListener(@Nonnull final T listener) {
return rpcService.registerRpcListener(listener);
}
}