Eliminate blueprint from replicate-netty

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

diff --git a/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/NettyReplicationSource.java b/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/NettyReplicationSource.java
new file mode 100644 (file)
index 0000000..f94a471
--- /dev/null
+++ b/replicate/mdsal-replicate-netty/src/main/java/org/opendaylight/mdsal/replicate/netty/NettyReplicationSource.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.mdsal.replicate.netty;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Verify.verify;
+
+import java.time.Duration;
+import org.opendaylight.mdsal.dom.api.DOMDataBroker;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
+import org.opendaylight.yangtools.concepts.AbstractRegistration;
+import org.opendaylight.yangtools.concepts.Registration;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.metatype.annotations.AttributeDefinition;
+import org.osgi.service.metatype.annotations.Designate;
+import org.osgi.service.metatype.annotations.ObjectClassDefinition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@Component(immediate = true, configurationPid = "org.opendaylight.mdsal.replicate.netty.source")
+@Designate(ocd = NettyReplicationSource.Config.class)
+public final class NettyReplicationSource {
+    private static final Logger LOG = LoggerFactory.getLogger(NettyReplicationSource.class);
+
+    @ObjectClassDefinition
+    public @interface Config {
+        @AttributeDefinition(name = "enabled")
+        boolean enabled() default false;
+
+        @AttributeDefinition(name = "listen-port")
+        int listenPort() default 9999;
+
+        @AttributeDefinition(name = "keepalive-interval-seconds")
+        int keepAliveIntervalSeconds() default 10;
+
+        @AttributeDefinition(name = "max-missed-keepalives")
+        int maxMissedKeepalives() default 5;
+    }
+
+    @Reference
+    private BootstrapSupport bootstrapSupport;
+
+    @Reference
+    private DOMDataBroker dataBroker;
+
+    @Reference
+    private ClusterSingletonServiceProvider singletonService;
+
+    private static final class Disabled extends AbstractRegistration {
+        @Override
+        protected void removeRegistration() {
+            // no-op
+        }
+    }
+
+    private NettyReplicationSource() {
+
+    }
+
+    @Activate
+    void activate(final Config config) {
+        final Duration keepaliveInterval = Duration.ofSeconds(config.keepAliveIntervalSeconds());
+
+        createSource(bootstrapSupport, dataBroker, singletonService, config.enabled(), config.listenPort(),
+                keepaliveInterval, config.maxMissedKeepalives());
+    }
+
+    static Registration createSource(final BootstrapSupport bootstrap, final DOMDataBroker broker,
+                                    final ClusterSingletonServiceProvider singleton, final boolean enabled,
+                                    final int listenPort, final Duration keepaliveInterval,
+                                    final int maxMissedKeepalives) {
+        LOG.debug("Source {}", enabled ? "enabled" : "disabled");
+        final DOMDataTreeChangeService dtcs = broker.getExtensions().getInstance(DOMDataTreeChangeService.class);
+        verify(dtcs != null, "Missing DOMDataTreeChangeService in broker %s", broker);
+        checkArgument(maxMissedKeepalives > 0, "max-missed-keepalives %s must be greater than 0", maxMissedKeepalives);
+        return enabled ? singleton.registerClusterSingletonService(new SourceSingletonService(bootstrap,
+                dtcs, listenPort, keepaliveInterval, maxMissedKeepalives)) : new Disabled();
+    }
+}