X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FSimpleShardDataTreeCohort.java;h=b9e39975e5c869529a31fa2a56dad6e0c0db9378;hp=71eaf7dbc8613837a69020a108e00f3d1781553e;hb=8ed5603b4f3503559f2f85137c42d7605ebfd3e9;hpb=925cb4a228d0fda99c7bfeb432eb25285a223887

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/SimpleShardDataTreeCohort.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/SimpleShardDataTreeCohort.java
index 71eaf7dbc8..b9e39975e5 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/SimpleShardDataTreeCohort.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/SimpleShardDataTreeCohort.java
@@ -8,19 +8,17 @@
 package org.opendaylight.controller.cluster.datastore;
 
 import akka.dispatch.ExecutionContexts;
+import akka.dispatch.Futures;
 import akka.dispatch.OnComplete;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Verify;
 import com.google.common.primitives.UnsignedLong;
 import com.google.common.util.concurrent.FutureCallback;
-import com.google.common.util.concurrent.Futures;
-import com.google.common.util.concurrent.ListenableFuture;
-import com.google.common.util.concurrent.SettableFuture;
+import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeoutException;
 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
-import org.opendaylight.yangtools.concepts.Identifiable;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateTip;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
@@ -28,9 +26,36 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import scala.concurrent.Future;
 
-final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Identifiable<TransactionIdentifier> {
+abstract class SimpleShardDataTreeCohort extends ShardDataTreeCohort {
+    static final class DeadOnArrival extends SimpleShardDataTreeCohort {
+        private final Exception failure;
+
+        DeadOnArrival(final ShardDataTree dataTree, final DataTreeModification transaction,
+            final TransactionIdentifier transactionId, final Exception failure) {
+            super(dataTree, transaction, transactionId, null);
+            this.failure = Preconditions.checkNotNull(failure);
+        }
+
+        @Override
+        void throwCanCommitFailure() throws Exception {
+            throw failure;
+        }
+    }
+
+    static final class Normal extends SimpleShardDataTreeCohort {
+        Normal(final ShardDataTree dataTree, final DataTreeModification transaction,
+            final TransactionIdentifier transactionId, final CompositeDataTreeCohort userCohorts) {
+            super(dataTree, transaction, transactionId, Preconditions.checkNotNull(userCohorts));
+        }
+
+        @Override
+        void throwCanCommitFailure() {
+            // No-op
+        }
+    }
+
     private static final Logger LOG = LoggerFactory.getLogger(SimpleShardDataTreeCohort.class);
-    private static final ListenableFuture<Void> VOID_FUTURE = Futures.immediateFuture(null);
+
     private final DataTreeModification transaction;
     private final ShardDataTree dataTree;
     private final TransactionIdentifier transactionId;
@@ -46,7 +71,7 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
         this.dataTree = Preconditions.checkNotNull(dataTree);
         this.transaction = Preconditions.checkNotNull(transaction);
         this.transactionId = Preconditions.checkNotNull(transactionId);
-        this.userCohorts = Preconditions.checkNotNull(userCohorts);
+        this.userCohorts = userCohorts;
     }
 
     @Override
@@ -60,7 +85,6 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
     }
 
     @Override
-
     DataTreeModification getDataTreeModification() {
         return transaction;
     }
@@ -95,33 +119,37 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
     }
 
     @Override
-    public ListenableFuture<Void> abort() {
-        dataTree.startAbort(this);
+    public void abort(final FutureCallback<Void> abortCallback) {
+        if (!dataTree.startAbort(this)) {
+            abortCallback.onSuccess(null);
+            return;
+        }
+
+        candidate = null;
         state = State.ABORTED;
 
-        final Optional<Future<Iterable<Object>>> maybeAborts = userCohorts.abort();
+        final Optional<List<Future<Object>>> maybeAborts = userCohorts.abort();
         if (!maybeAborts.isPresent()) {
-            return VOID_FUTURE;
+            abortCallback.onSuccess(null);
+            return;
         }
 
-        final Future<Iterable<Object>> aborts = maybeAborts.get();
+        final Future<Iterable<Object>> aborts = Futures.sequence(maybeAborts.get(), ExecutionContexts.global());
         if (aborts.isCompleted()) {
-            return VOID_FUTURE;
+            abortCallback.onSuccess(null);
+            return;
         }
 
-        final SettableFuture<Void> ret = SettableFuture.create();
         aborts.onComplete(new OnComplete<Iterable<Object>>() {
             @Override
             public void onComplete(final Throwable failure, final Iterable<Object> objs) {
                 if (failure != null) {
-                    ret.setException(failure);
+                    abortCallback.onFailure(failure);
                 } else {
-                    ret.set(null);
+                    abortCallback.onSuccess(null);
                 }
             }
         }, ExecutionContexts.global());
-
-        return ret;
     }
 
     @Override
@@ -129,7 +157,12 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
         checkState(State.PRE_COMMIT_COMPLETE);
         this.callback = Preconditions.checkNotNull(newCallback);
         state = State.COMMIT_PENDING;
-        dataTree.startCommit(this, candidate);
+
+        if (nextFailure == null) {
+            dataTree.startCommit(this, candidate);
+        } else {
+            failedCommit(nextFailure);
+        }
     }
 
     private <T> FutureCallback<T> switchState(final State newState) {
@@ -141,6 +174,11 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
         return ret;
     }
 
+    void setNewCandidate(final DataTreeCandidateTip dataTreeCandidate) {
+        checkState(State.PRE_COMMIT_COMPLETE);
+        this.candidate = Verify.verifyNotNull(dataTreeCandidate);
+    }
+
     void successfulCanCommit() {
         switchState(State.CAN_COMMIT_COMPLETE).onSuccess(null);
     }
@@ -159,6 +197,7 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
      */
     // FIXME: this should be asynchronous
     void userPreCommit(final DataTreeCandidate dataTreeCandidate) throws ExecutionException, TimeoutException {
+        userCohorts.reset();
         userCohorts.canCommit(dataTreeCandidate);
         userCohorts.preCommit();
     }
@@ -211,6 +250,13 @@ final class SimpleShardDataTreeCohort extends ShardDataTreeCohort implements Ide
         this.nextFailure = Preconditions.checkNotNull(cause);
     }
 
+    /**
+     * If there is an initial failure, throw it so the caller can process it.
+     *
+     * @throws Exception reported failure.
+     */
+    abstract void throwCanCommitFailure() throws Exception;
+
     @Override
     public boolean isFailed() {
         return state == State.FAILED || nextFailure != null;