Add the ability to report known connected clients

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / Shard.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java
index 8c671cc7da41abca57071902052852832e81bd4d..5fa9192ac0d4c727a72f2d3af8904b021c46aa80 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/Shard.java
@@ -25,6 +25,7 @@ import com.google.common.base.Ticker;
 import com.google.common.base.Verify;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Range;
 import java.io.IOException;
 import java.util.Arrays;
@@ -76,6 +77,8 @@ import org.opendaylight.controller.cluster.datastore.messages.CommitTransaction;
 import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
 import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
 import org.opendaylight.controller.cluster.datastore.messages.ForwardedReadyTransaction;
+import org.opendaylight.controller.cluster.datastore.messages.GetKnownClients;
+import org.opendaylight.controller.cluster.datastore.messages.GetKnownClientsReply;
 import org.opendaylight.controller.cluster.datastore.messages.GetShardDataTree;
 import org.opendaylight.controller.cluster.datastore.messages.MakeLeaderLocal;
 import org.opendaylight.controller.cluster.datastore.messages.OnDemandShardState;
@@ -371,6 +374,8 @@ public class Shard extends RaftActor {
                 onMakeLeaderLocal();
             } else if (RESUME_NEXT_PENDING_TRANSACTION.equals(message)) {
                 store.resumeNextPendingTransaction();
+            } else if (GetKnownClients.INSTANCE.equals(message)) {
+                handleGetKnownClients();
             } else if (!responseMessageSlicer.handleMessage(message)) {
                 super.handleNonRaftCommand(message);
             }
@@ -597,6 +602,18 @@ public class Shard extends RaftActor {
         }
     }
 
+    private void handleGetKnownClients() {
+        final ImmutableSet<ClientIdentifier> clients;
+        if (isLeader()) {
+            clients = knownFrontends.values().stream()
+                    .map(LeaderFrontendState::getIdentifier)
+                    .collect(ImmutableSet.toImmutableSet());
+        } else {
+            clients = frontendMetadata.getClients();
+        }
+        sender().tell(new GetKnownClientsReply(clients), self());
+    }
+
     private boolean hasLeader() {
         return getLeaderId() != null;
     }