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%2FShardDataTreeTransactionChain.java;h=72f700c7443dc4ad4433d8159423b490643b6534;hp=183c2192e405e2a48a52c664ef90033f5da38597;hb=HEAD;hpb=53090b106117e873f6a69a04290ee3bdb2cdf975

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeTransactionChain.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeTransactionChain.java
index 183c2192e4..6be13ae129 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeTransactionChain.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeTransactionChain.java
@@ -7,77 +7,99 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
+import static com.google.common.base.Preconditions.checkState;
+import static java.util.Objects.requireNonNull;
+
 import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
-import javax.annotation.concurrent.NotThreadSafe;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
+import java.util.Optional;
+import java.util.SortedSet;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
+import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
+import org.opendaylight.yangtools.concepts.Identifiable;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeSnapshot;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * A transaction chain attached to a Shard.
+ * A transaction chain attached to a Shard. This class is NOT thread-safe.
  */
-@NotThreadSafe
-final class ShardDataTreeTransactionChain extends ShardDataTreeTransactionParent {
+final class ShardDataTreeTransactionChain extends ShardDataTreeTransactionParent
+        implements Identifiable<LocalHistoryIdentifier> {
+
     private static final Logger LOG = LoggerFactory.getLogger(ShardDataTreeTransactionChain.class);
+    private final LocalHistoryIdentifier chainId;
     private final ShardDataTree dataTree;
-    private final String chainId;
 
     private ReadWriteShardDataTreeTransaction previousTx;
     private ReadWriteShardDataTreeTransaction openTransaction;
     private boolean closed;
 
-    ShardDataTreeTransactionChain(final String chainId, final ShardDataTree dataTree) {
-        this.dataTree = Preconditions.checkNotNull(dataTree);
-        this.chainId = Preconditions.checkNotNull(chainId);
+    ShardDataTreeTransactionChain(final LocalHistoryIdentifier localHistoryIdentifier, final ShardDataTree dataTree) {
+        chainId = requireNonNull(localHistoryIdentifier);
+        this.dataTree = requireNonNull(dataTree);
     }
 
     private DataTreeSnapshot getSnapshot() {
-        Preconditions.checkState(!closed, "TransactionChain %s has been closed", this);
-        Preconditions.checkState(openTransaction == null, "Transaction %s is open", openTransaction);
+        checkState(!closed, "TransactionChain %s has been closed", this);
+        checkState(openTransaction == null, "Transaction %s is open", openTransaction);
 
         if (previousTx == null) {
-            return dataTree.getDataTree().takeSnapshot();
-        } else {
-            return previousTx.getSnapshot();
+            LOG.debug("Opening an unchained snapshot in {}", chainId);
+            return dataTree.takeSnapshot();
         }
+
+        LOG.debug("Reusing a chained snapshot in {}", chainId);
+        return previousTx.getSnapshot();
     }
 
-    ReadOnlyShardDataTreeTransaction newReadOnlyTransaction(final String txId) {
+    @NonNull ReadOnlyShardDataTreeTransaction newReadOnlyTransaction(final TransactionIdentifier txId) {
         final DataTreeSnapshot snapshot = getSnapshot();
         LOG.debug("Allocated read-only transaction {} snapshot {}", txId, snapshot);
 
-        return new ReadOnlyShardDataTreeTransaction(txId, snapshot);
+        return new ReadOnlyShardDataTreeTransaction(this, txId, snapshot);
     }
 
-    ReadWriteShardDataTreeTransaction newReadWriteTransaction(final String txId) {
+    @NonNull ReadWriteShardDataTreeTransaction newReadWriteTransaction(final TransactionIdentifier txId) {
         final DataTreeSnapshot snapshot = getSnapshot();
         LOG.debug("Allocated read-write transaction {} snapshot {}", txId, snapshot);
 
-        openTransaction = new ReadWriteShardDataTreeTransaction(this, txId, snapshot.newModification());
-        return openTransaction;
+        final var ret = new ReadWriteShardDataTreeTransaction(this, txId, snapshot.newModification());
+        openTransaction = ret;
+        return ret;
     }
 
     void close() {
         closed = true;
+        LOG.debug("Closing chain {}", chainId);
     }
 
     @Override
-    protected void abortTransaction(final AbstractShardDataTreeTransaction<?> transaction) {
+    void abortFromTransactionActor(final AbstractShardDataTreeTransaction<?> transaction) {
         if (transaction instanceof ReadWriteShardDataTreeTransaction) {
-            Preconditions.checkState(openTransaction != null, "Attempted to abort transaction %s while none is outstanding", transaction);
-            LOG.debug("Aborted transaction {}", transaction);
+            checkState(openTransaction != null, "Attempted to abort transaction %s while none is outstanding",
+                    transaction);
+            LOG.debug("Aborted open transaction {}", transaction);
             openTransaction = null;
         }
     }
 
     @Override
-    protected ShardDataTreeCohort finishTransaction(final ReadWriteShardDataTreeTransaction transaction) {
-        Preconditions.checkState(openTransaction != null, "Attempted to finish transaction %s while none is outstanding", transaction);
+    void abortTransaction(final AbstractShardDataTreeTransaction<?> transaction, final Runnable callback) {
+        abortFromTransactionActor(transaction);
+        dataTree.abortTransaction(transaction, callback);
+    }
+
+    @Override
+    ShardDataTreeCohort finishTransaction(final ReadWriteShardDataTreeTransaction transaction,
+            final Optional<SortedSet<String>> participatingShardNames) {
+        checkState(openTransaction != null, "Attempted to finish transaction %s while none is outstanding",
+                transaction);
 
         // dataTree is finalizing ready the transaction, we just record it for the next
         // transaction in chain
-        final ShardDataTreeCohort delegate = dataTree.finishTransaction(transaction);
+        final ShardDataTreeCohort delegate = dataTree.finishTransaction(transaction, participatingShardNames);
         openTransaction = null;
         previousTx = transaction;
         LOG.debug("Committing transaction {}", transaction);
@@ -90,9 +112,26 @@ final class ShardDataTreeTransactionChain extends ShardDataTreeTransactionParent
         return MoreObjects.toStringHelper(this).add("id", chainId).toString();
     }
 
-    void clearTransaction(ReadWriteShardDataTreeTransaction transaction) {
+    void clearTransaction(final ReadWriteShardDataTreeTransaction transaction) {
         if (transaction.equals(previousTx)) {
             previousTx = null;
         }
     }
+
+    @Override
+    public LocalHistoryIdentifier getIdentifier() {
+        return chainId;
+    }
+
+    @Override
+    ShardDataTreeCohort createFailedCohort(final TransactionIdentifier txId, final DataTreeModification mod,
+            final Exception failure) {
+        return dataTree.createFailedCohort(txId, mod, failure);
+    }
+
+    @Override
+    ShardDataTreeCohort createReadyCohort(final TransactionIdentifier txId, final DataTreeModification mod,
+            final Optional<SortedSet<String>> participatingShardNames) {
+        return dataTree.createReadyCohort(txId, mod, participatingShardNames);
+    }
 }