catch and log cluster singleton service registration exceptions

[groupbasedpolicy.git] / neutron-ovsdb / src / main / java / org / opendaylight / controller / config / yang / config / neutron_ovsdb / impl / NeutronOvsdbInstance.java

diff --git a/neutron-ovsdb/src/main/java/org/opendaylight/controller/config/yang/config/neutron_ovsdb/impl/NeutronOvsdbInstance.java b/neutron-ovsdb/src/main/java/org/opendaylight/controller/config/yang/config/neutron_ovsdb/impl/NeutronOvsdbInstance.java
index ce1a28c03af289d02560431e352d41d5790425f2..6e8d74a9146956fca40856ba8ddbf9dd907a6340 100644 (file)
--- a/neutron-ovsdb/src/main/java/org/opendaylight/controller/config/yang/config/neutron_ovsdb/impl/NeutronOvsdbInstance.java
+++ b/neutron-ovsdb/src/main/java/org/opendaylight/controller/config/yang/config/neutron_ovsdb/impl/NeutronOvsdbInstance.java
@@ -8,23 +8,87 @@
 
 package org.opendaylight.controller.config.yang.config.neutron_ovsdb.impl;
 
+import com.google.common.base.Preconditions;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.opendaylight.controller.config.yang.config.groupbasedpolicy.GroupbasedpolicyInstance;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
 import org.opendaylight.groupbasedpolicy.neutron.ovsdb.NeutronOvsdb;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
+import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.endpoint.rev140421.EndpointService;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.neutron.ovsdb.params.rev160812.IntegrationBridgeSetting;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-public class NeutronOvsdbInstance implements AutoCloseable{
+public class NeutronOvsdbInstance implements ClusterSingletonService, AutoCloseable {
 
+    private static final Logger LOG = LoggerFactory.getLogger(NeutronOvsdbInstance.class);
+
+    private static final ServiceGroupIdentifier IDENTIFIER =
+            ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
+    private final DataBroker dataBroker;
+    private final IntegrationBridgeSetting settings;
+    private final ClusterSingletonServiceProvider clusterSingletonService;
+    private final RpcProviderRegistry rpcBroker;
+    private ClusterSingletonServiceRegistration singletonServiceRegistration;
     private NeutronOvsdb neutronOvsdb;
 
-    public NeutronOvsdbInstance(DataBroker dataBroker, EndpointService epService,
-            IntegrationBridgeSetting settings) {
+    public NeutronOvsdbInstance(final DataBroker dataBroker,
+                                final RpcProviderRegistry rpcBroker,
+                                final IntegrationBridgeSetting settings,
+                                final ClusterSingletonServiceProvider clusterSingletonService) {
+        this.dataBroker = Preconditions.checkNotNull(dataBroker);
+        this.rpcBroker = Preconditions.checkNotNull(rpcBroker);
+        this.settings = Preconditions.checkNotNull(settings);
+        this.clusterSingletonService = Preconditions.checkNotNull(clusterSingletonService);
+    }
+
+    public void initialize() {
+        LOG.info("Clustering session initiated for {}", this.getClass().getSimpleName());
+        try {
+            singletonServiceRegistration = clusterSingletonService.registerClusterSingletonService(this);
+        } catch (Exception e) {
+            LOG.warn("Exception thrown while registering cluster singleton service in {}", this.getClass(), e.getMessage());
+        }
+    }
+
+    @Override
+    public void instantiateServiceInstance() {
+        LOG.info("Instantiating {}", this.getClass().getSimpleName());
+        final EndpointService epService = rpcBroker.getRpcService(EndpointService.class);
         neutronOvsdb = new NeutronOvsdb(dataBroker, epService, settings);
     }
 
+    @Override
+    public ListenableFuture<Void> closeServiceInstance() {
+        LOG.info("Instance {} closed", this.getClass().getSimpleName());
+        try {
+            neutronOvsdb.close();
+        } catch (Exception e) {
+            LOG.warn("Instance close failed to ... ", e);
+        }
+        return Futures.immediateFuture(null);
+    }
+
     @Override
     public void close() throws Exception {
-        neutronOvsdb.close();
+        LOG.info("Clustering provider closed for {}", this.getClass().getSimpleName());
+        if (singletonServiceRegistration != null) {
+            try {
+                singletonServiceRegistration.close();
+            } catch (Exception e) {
+                LOG.warn("{} closed unexpectedly", this.getClass().getSimpleName(), e);
+            }
+            singletonServiceRegistration = null;
+        }
     }
 
+    @Override
+    public ServiceGroupIdentifier getIdentifier() {
+        return IDENTIFIER;
+    }
 }