X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-akka-raft%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fexample%2FExampleActor.java;h=3bfdf732cf01cd3d3898158bc4b8e62585e5a9f5;hb=34bc6ec632529a0dfe419aa7404bb42a456fbc96;hp=3c8e12b8b11e0c5fd977ceedbda2fa65ffb1b71a;hpb=789431e2c0c76d9d00bdc7599a08036e3720f170;p=controller.git

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/example/ExampleActor.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/example/ExampleActor.java
index 3c8e12b8b1..3bfdf732cf 100644
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/example/ExampleActor.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/example/ExampleActor.java
@@ -8,27 +8,161 @@
 
 package org.opendaylight.controller.cluster.example;
 
+import akka.actor.ActorRef;
+import akka.actor.Props;
+import akka.japi.Creator;
+import com.google.common.base.Optional;
+import com.google.protobuf.ByteString;
+import org.opendaylight.controller.cluster.example.messages.KeyValue;
+import org.opendaylight.controller.cluster.example.messages.KeyValueSaved;
+import org.opendaylight.controller.cluster.example.messages.PrintRole;
+import org.opendaylight.controller.cluster.example.messages.PrintState;
+import org.opendaylight.controller.cluster.raft.ConfigParams;
 import org.opendaylight.controller.cluster.raft.RaftActor;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
+import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.HashMap;
+import java.util.Map;
 
 /**
  * A sample actor showing how the RaftActor is to be extended
  */
 public class ExampleActor extends RaftActor {
-    public ExampleActor(String id) {
-        super(id);
+
+    private final Map<String, String> state = new HashMap();
+
+    private long persistIdentifier = 1;
+
+
+    public ExampleActor(String id, Map<String, String> peerAddresses,
+        Optional<ConfigParams> configParams) {
+        super(id, peerAddresses, configParams);
+    }
+
+    public static Props props(final String id, final Map<String, String> peerAddresses,
+        final Optional<ConfigParams> configParams){
+        return Props.create(new Creator<ExampleActor>(){
+
+            @Override public ExampleActor create() throws Exception {
+                return new ExampleActor(id, peerAddresses, configParams);
+            }
+        });
     }
 
     @Override public void onReceiveCommand(Object message){
-        /*
-            Here the extended class does whatever it needs to do.
-            If it cannot handle a message then it passes it on to the super
-            class for handling
-         */
-        super.onReceiveCommand(message);
+        if(message instanceof KeyValue){
+            if(isLeader()) {
+                String persistId = Long.toString(persistIdentifier++);
+                persistData(getSender(), persistId, (Payload) message);
+            } else {
+                if(getLeader() != null) {
+                    getLeader().forward(message, getContext());
+                }
+            }
+
+        } else if (message instanceof PrintState) {
+            if(LOG.isDebugEnabled()) {
+                LOG.debug("State of the node:{} has entries={}, {}",
+                    getId(), state.size(), getReplicatedLogState());
+            }
+
+        } else if (message instanceof PrintRole) {
+            if(LOG.isDebugEnabled()) {
+                LOG.debug("{} = {}, Peers={}", getId(), getRaftState(), getPeers());
+            }
+
+        } else {
+            super.onReceiveCommand(message);
+        }
+    }
+
+    @Override protected void applyState(ActorRef clientActor, String identifier,
+        Object data) {
+        if(data instanceof KeyValue){
+            KeyValue kv = (KeyValue) data;
+            state.put(kv.getKey(), kv.getValue());
+            if(clientActor != null) {
+                clientActor.tell(new KeyValueSaved(), getSelf());
+            }
+        }
+    }
+
+    @Override protected void createSnapshot() {
+        ByteString bs = null;
+        try {
+            bs = fromObject(state);
+        } catch (Exception e) {
+            LOG.error("Exception in creating snapshot", e);
+        }
+        getSelf().tell(new CaptureSnapshotReply(bs), null);
+    }
+
+    @Override protected void applySnapshot(ByteString snapshot) {
+        state.clear();
+        try {
+            state.putAll((HashMap) toObject(snapshot));
+        } catch (Exception e) {
+           LOG.error("Exception in applying snapshot", e);
+        }
+        if(LOG.isDebugEnabled()) {
+            LOG.debug("Snapshot applied to state :" + ((HashMap) state).size());
+        }
+    }
+
+    private ByteString fromObject(Object snapshot) throws Exception {
+        ByteArrayOutputStream b = null;
+        ObjectOutputStream o = null;
+        try {
+            b = new ByteArrayOutputStream();
+            o = new ObjectOutputStream(b);
+            o.writeObject(snapshot);
+            byte[] snapshotBytes = b.toByteArray();
+            return ByteString.copyFrom(snapshotBytes);
+        } finally {
+            if (o != null) {
+                o.flush();
+                o.close();
+            }
+            if (b != null) {
+                b.close();
+            }
+        }
+    }
+
+    private Object toObject(ByteString bs) throws ClassNotFoundException, IOException {
+        Object obj = null;
+        ByteArrayInputStream bis = null;
+        ObjectInputStream ois = null;
+        try {
+            bis = new ByteArrayInputStream(bs.toByteArray());
+            ois = new ObjectInputStream(bis);
+            obj = ois.readObject();
+        } finally {
+            if (bis != null) {
+                bis.close();
+            }
+            if (ois != null) {
+                ois.close();
+            }
+        }
+        return obj;
+    }
+
+    @Override protected void onStateChanged() {
+
     }
 
     @Override public void onReceiveRecover(Object message) {
         super.onReceiveRecover(message);
     }
 
+    @Override public String persistenceId() {
+        return getId();
+    }
 }