replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/NettyReplicationSource.java

   1 /*
   2  * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.mdsal.replicate.netty;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static com.google.common.base.Verify.verify;
  12
  13 import com.google.common.annotations.VisibleForTesting;
  14 import java.time.Duration;
  15 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  16 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
  17 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  18 import org.opendaylight.yangtools.concepts.Registration;
  19 import org.osgi.service.component.annotations.Activate;
  20 import org.osgi.service.component.annotations.Component;
  21 import org.osgi.service.component.annotations.Deactivate;
  22 import org.osgi.service.component.annotations.Reference;
  23 import org.osgi.service.metatype.annotations.AttributeDefinition;
  24 import org.osgi.service.metatype.annotations.Designate;
  25 import org.osgi.service.metatype.annotations.ObjectClassDefinition;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 @Component(immediate = true, configurationPid = "org.opendaylight.mdsal.replicate.netty.source")
  30 @Designate(ocd = NettyReplicationSource.Config.class)
  31 public final class NettyReplicationSource {
  32     private static final Logger LOG = LoggerFactory.getLogger(NettyReplicationSource.class);
  33
  34     @ObjectClassDefinition
  35     public @interface Config {
  36         @AttributeDefinition(name = "enabled")
  37         boolean enabled() default false;
  38
  39         @AttributeDefinition(name = "listen-port")
  40         int listenPort() default 9999;
  41
  42         @AttributeDefinition(name = "keepalive-interval-seconds")
  43         int keepAliveIntervalSeconds() default 10;
  44
  45         @AttributeDefinition(name = "max-missed-keepalives")
  46         int maxMissedKeepalives() default 5;
  47     }
  48
  49     @Reference
  50     private BootstrapSupport bootstrapSupport;
  51
  52     @Reference
  53     private DOMDataBroker dataBroker;
  54
  55     @Reference
  56     private ClusterSingletonServiceProvider singletonService;
  57
  58     private Registration reg;
  59
  60     public NettyReplicationSource() {
  61         // Visible for DI
  62     }
  63
  64     @Activate
  65     void activate(final Config config) {
  66         final Duration keepaliveInterval = Duration.ofSeconds(config.keepAliveIntervalSeconds());
  67
  68         reg = createSource(bootstrapSupport, dataBroker, singletonService, config.enabled(), config.listenPort(),
  69                 keepaliveInterval, config.maxMissedKeepalives());
  70     }
  71
  72     @Deactivate
  73     void deactivate() {
  74         reg.close();
  75         reg = null;
  76     }
  77
  78     @VisibleForTesting
  79     static Registration createSource(final BootstrapSupport bootstrap, final DOMDataBroker broker,
  80                                     final ClusterSingletonServiceProvider singleton, final boolean enabled,
  81                                     final int listenPort, final Duration keepaliveInterval,
  82                                     final int maxMissedKeepalives) {
  83         LOG.debug("Source {}", enabled ? "enabled" : "disabled");
  84         final var dtcs = broker.extension(DOMDataTreeChangeService.class);
  85         verify(dtcs != null, "Missing DOMDataTreeChangeService in broker %s", broker);
  86         checkArgument(maxMissedKeepalives > 0, "max-missed-keepalives %s must be greater than 0", maxMissedKeepalives);
  87         return enabled ? singleton.registerClusterSingletonService(new SourceSingletonService(bootstrap,
  88                 dtcs, listenPort, keepaliveInterval, maxMissedKeepalives)) : new NoOpRegistration();
  89     }
  90 }