catch and log cluster singleton service registration exceptions

[groupbasedpolicy.git] / neutron-vpp-mapper / src / main / java / org / opendaylight / controller / config / yang / config / neutron_vpp_mapper / impl / NeutronVppMapperInstance.java

diff --git a/neutron-vpp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/neutron_vpp_mapper/impl/NeutronVppMapperInstance.java b/neutron-vpp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/neutron_vpp_mapper/impl/NeutronVppMapperInstance.java
index f9a78fcaa991b6e0158240e33f16348db49894f1..0ac9c47c7c7b92f4cd90c0dd1f05ad0912e790c6 100644 (file)
--- a/neutron-vpp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/neutron_vpp_mapper/impl/NeutronVppMapperInstance.java
+++ b/neutron-vpp-mapper/src/main/java/org/opendaylight/controller/config/yang/config/neutron_vpp_mapper/impl/NeutronVppMapperInstance.java
@@ -8,19 +8,82 @@
 
 package org.opendaylight.controller.config.yang.config.neutron_vpp_mapper.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.groupbasedpolicy.neutron.vpp.mapper.NeutronVppMapper;
+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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-public class NeutronVppMapperInstance implements AutoCloseable{
+public class NeutronVppMapperInstance implements ClusterSingletonService, AutoCloseable {
 
+    private static final Logger LOG = LoggerFactory.getLogger(NeutronVppMapperInstance.class);
+
+    private static final ServiceGroupIdentifier IDENTIFIER =
+            ServiceGroupIdentifier.create(GroupbasedpolicyInstance.GBP_SERVICE_GROUP_IDENTIFIER);
+    private final DataBroker dataBroker;
+    private final String socketPath;
+    private final String socketPrefix;
+    private final String routingNode;
+    private final ClusterSingletonServiceProvider clusterSingletonService;
+    private ClusterSingletonServiceRegistration singletonServiceRegistration;
     private NeutronVppMapper mapper;
 
-    public NeutronVppMapperInstance (DataBroker dataBroker, String socketPath, String socketPrefix) {
-        mapper = new NeutronVppMapper(socketPath, socketPrefix, dataBroker);
+    public NeutronVppMapperInstance(final DataBroker dataBroker,
+                                    final String socketPath,
+                                    final String socketPrefix,
+                                    final String routingNode,
+                                    final ClusterSingletonServiceProvider clusterSingletonService) {
+        this.dataBroker = Preconditions.checkNotNull(dataBroker);
+        this.socketPath = Preconditions.checkNotNull(socketPath);
+        this.socketPrefix = Preconditions.checkNotNull(socketPrefix);
+        this.routingNode = Preconditions.checkNotNull(routingNode);
+        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 close() throws Exception {
+    public void instantiateServiceInstance() {
+        LOG.info("Instantiating {}", this.getClass().getSimpleName());
+        mapper = new NeutronVppMapper(socketPath, socketPrefix, routingNode, dataBroker);
+    }
+
+    @Override
+    public ListenableFuture<Void> closeServiceInstance() {
+        LOG.info("Instance {} closed", this.getClass().getSimpleName());
         mapper.close();
+        return Futures.immediateFuture(null);
+    }
+
+    @Override
+    public void close() throws Exception {
+        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.getMessage());
+            }
+            singletonServiceRegistration = null;
+        }
+    }
+
+    @Override
+    public ServiceGroupIdentifier getIdentifier() {
+        return IDENTIFIER;
     }
 }