package org.opendaylight.controller.cluster.datastore;
import akka.actor.ActorRef;
+import akka.actor.Props;
import akka.event.Logging;
import akka.event.LoggingAdapter;
+import akka.japi.Creator;
+import akka.persistence.Persistent;
import akka.persistence.UntypedProcessor;
+import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
+import org.opendaylight.controller.cluster.datastore.messages.CommitTransactionReply;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChain;
import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionChainReply;
+import org.opendaylight.controller.cluster.datastore.messages.ForwardedCommitTransaction;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply;
import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
+import org.opendaylight.controller.cluster.datastore.modification.Modification;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore;
+import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
/**
- * A Shard represents a portion of the logical data tree
- * <p/>
+ * A Shard represents a portion of the logical data tree <br/>
+ * <p>
* Our Shard uses InMemoryDataStore as it's internal representation and delegates all requests it
- *
+ * </p>
*/
public class Shard extends UntypedProcessor {
- ListeningExecutorService storeExecutor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(2));
+ public static final String DEFAULT_NAME = "default";
+
+ private final ListeningExecutorService storeExecutor = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(2));
+
+ private final InMemoryDOMDataStore store;
+
+ private final Map<Modification, DOMStoreThreePhaseCommitCohort> modificationToCohort = new HashMap<>();
+
+ private final LoggingAdapter log = Logging.getLogger(getContext().system(), this);
+
+ private Shard(String name){
+ store = new InMemoryDOMDataStore(name, storeExecutor);
+ }
+
+ public static Props props(final String name) {
+ return Props.create(new Creator<Shard>() {
- private final InMemoryDOMDataStore store = new InMemoryDOMDataStore("OPER", storeExecutor);
+ @Override
+ public Shard create() throws Exception {
+ return new Shard(name);
+ }
- LoggingAdapter log = Logging.getLogger(getContext().system(), this);
+ });
+ }
@Override
public void onReceive(Object message) throws Exception {
if (message instanceof CreateTransactionChain) {
createTransactionChain();
- } else if(message instanceof RegisterChangeListener){
+ } else if (message instanceof RegisterChangeListener) {
registerChangeListener((RegisterChangeListener) message);
- } else if(message instanceof UpdateSchemaContext){
+ } else if (message instanceof UpdateSchemaContext) {
updateSchemaContext((UpdateSchemaContext) message);
+ } else if (message instanceof ForwardedCommitTransaction ) {
+ handleForwardedCommit((ForwardedCommitTransaction) message);
+ } else if (message instanceof Persistent){
+ commit((Persistent) message);
}
}
+ private void commit(Persistent message) {
+ Modification modification = (Modification) message.payload();
+ DOMStoreThreePhaseCommitCohort cohort = modificationToCohort.remove(modification);
+ if(cohort == null){
+ log.error("Could not find cohort for modification : " + modification);
+ return;
+ }
+ final ListenableFuture<Void> future = cohort.commit();
+ final ActorRef sender = getSender();
+ final ActorRef self = getSelf();
+ future.addListener(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ future.get();
+ sender.tell(new CommitTransactionReply(), self);
+ } catch (InterruptedException | ExecutionException e) {
+ log.error(e, "An exception happened when committing");
+ }
+ }
+ }, getContext().dispatcher());
+ }
+
+ private void handleForwardedCommit(ForwardedCommitTransaction message) {
+ log.info("received forwarded transaction");
+ modificationToCohort.put(message.getModification(), message.getCohort());
+ getSelf().forward(Persistent.create(message.getModification()), getContext());
+ }
+
private void updateSchemaContext(UpdateSchemaContext message) {
store.onGlobalContextUpdated(message.getSchemaContext());
}