import akka.actor.Props;
import akka.japi.Creator;
import com.google.common.base.Optional;
+import com.google.protobuf.ByteString;
+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;
+import org.opendaylight.controller.cluster.DataPersistenceProvider;
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.notifications.RoleChangeNotifier;
import org.opendaylight.controller.cluster.raft.ConfigParams;
import org.opendaylight.controller.cluster.raft.RaftActor;
+import org.opendaylight.controller.cluster.raft.RaftState;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
+import org.opendaylight.controller.cluster.raft.behaviors.Leader;
import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
-import java.util.HashMap;
-import java.util.Map;
-
/**
* A sample actor showing how the RaftActor is to be extended
*/
public class ExampleActor extends RaftActor {
private final Map<String, String> state = new HashMap();
+ private final DataPersistenceProvider dataPersistenceProvider;
private long persistIdentifier = 1;
+ private Optional<ActorRef> roleChangeNotifier;
public ExampleActor(String id, Map<String, String> peerAddresses,
Optional<ConfigParams> configParams) {
super(id, peerAddresses, configParams);
+ this.dataPersistenceProvider = new PersistentDataProvider();
+ roleChangeNotifier = createRoleChangeNotifier(id);
}
public static Props props(final String id, final Map<String, String> peerAddresses,
});
}
- @Override public void onReceiveCommand(Object message){
+ @Override public void onReceiveCommand(Object message) throws Exception{
if(message instanceof KeyValue){
if(isLeader()) {
String persistId = Long.toString(persistIdentifier++);
}
} else if (message instanceof PrintState) {
- LOG.debug("State of the node:{} has entries={}, {}",
- getId(), state.size(), getReplicatedLogState());
+ if(LOG.isDebugEnabled()) {
+ LOG.debug("State of the node:{} has entries={}, {}",
+ getId(), state.size(), getReplicatedLogState());
+ }
} else if (message instanceof PrintRole) {
- LOG.debug("{} = {}, Peers={}", getId(), getRaftState(),getPeers());
+ if(LOG.isDebugEnabled()) {
+ String followers = "";
+ if (getRaftState() == RaftState.Leader || getRaftState() == RaftState.IsolatedLeader) {
+ followers = ((Leader)this.getCurrentBehavior()).printFollowerStates();
+ LOG.debug("{} = {}, Peers={}, followers={}", getId(), getRaftState(),
+ getRaftActorContext().getPeerAddresses().keySet(), followers);
+ } else {
+ LOG.debug("{} = {}, Peers={}", getId(), getRaftState(),
+ getRaftActorContext().getPeerAddresses().keySet());
+ }
+
+
+ }
} else {
super.onReceiveCommand(message);
}
}
- @Override protected void applyState(ActorRef clientActor, String identifier,
- Object data) {
+ protected String getReplicatedLogState() {
+ return "snapshotIndex=" + getRaftActorContext().getReplicatedLog().getSnapshotIndex()
+ + ", snapshotTerm=" + getRaftActorContext().getReplicatedLog().getSnapshotTerm()
+ + ", im-mem journal size=" + getRaftActorContext().getReplicatedLog().size();
+ }
+
+ public Optional<ActorRef> createRoleChangeNotifier(String actorId) {
+ ActorRef exampleRoleChangeNotifier = this.getContext().actorOf(
+ RoleChangeNotifier.getProps(actorId), actorId + "-notifier");
+ return Optional.<ActorRef>of(exampleRoleChangeNotifier);
+ }
+
+ @Override
+ protected Optional<ActorRef> getRoleChangeNotifier() {
+ return roleChangeNotifier;
+ }
+
+ @Override protected void applyState(final ActorRef clientActor, final String identifier,
+ final Object data) {
if(data instanceof KeyValue){
KeyValue kv = (KeyValue) data;
state.put(kv.getKey(), kv.getValue());
}
}
- @Override protected Object createSnapshot() {
- return state;
+ @Override protected void createSnapshot() {
+ ByteString bs = null;
+ try {
+ bs = fromObject(state);
+ } catch (Exception e) {
+ LOG.error(e, "Exception in creating snapshot");
+ }
+ getSelf().tell(new CaptureSnapshotReply(bs), null);
}
- @Override protected void applySnapshot(Object snapshot) {
+ @Override protected void applySnapshot(ByteString snapshot) {
state.clear();
- state.putAll((HashMap) snapshot);
- LOG.debug("Snapshot applied to state :" + ((HashMap) snapshot).size());
+ try {
+ state.putAll((HashMap) toObject(snapshot));
+ } catch (Exception e) {
+ LOG.error(e, "Exception in applying snapshot");
+ }
+ 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
+ protected DataPersistenceProvider persistence() {
+ return dataPersistenceProvider;
}
- @Override public void onReceiveRecover(Object message) {
+ @Override public void onReceiveRecover(Object message)throws Exception {
super.onReceiveRecover(message);
}
@Override public String persistenceId() {
return getId();
}
+
+ @Override
+ protected void startLogRecoveryBatch(int maxBatchSize) {
+ }
+
+ @Override
+ protected void appendRecoveredLogEntry(Payload data) {
+ }
+
+ @Override
+ protected void applyCurrentLogRecoveryBatch() {
+ }
+
+ @Override
+ protected void onRecoveryComplete() {
+ }
+
+ @Override
+ protected void applyRecoverySnapshot(ByteString snapshot) {
+ }
}
Code Review / controller.git / blobdiff