Handle 3PC message backwards compatibility

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / TransactionProxy.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
index c3a5d074140785626828c0d6eebaf18709ed5bbc..5dcba758f6a1129fc51581a035728abb64503124 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/TransactionProxy.java
@@ -12,6 +12,7 @@ import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Function;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Supplier;
 import com.google.common.collect.Iterables;
 import com.google.common.util.concurrent.CheckedFuture;
 import com.google.common.util.concurrent.Futures;
@@ -25,7 +26,13 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
-import org.opendaylight.controller.cluster.datastore.shardstrategy.ShardStrategyFactory;
+import org.opendaylight.controller.cluster.datastore.messages.AbstractRead;
+import org.opendaylight.controller.cluster.datastore.messages.DataExists;
+import org.opendaylight.controller.cluster.datastore.messages.ReadData;
+import org.opendaylight.controller.cluster.datastore.modification.AbstractModification;
+import org.opendaylight.controller.cluster.datastore.modification.DeleteModification;
+import org.opendaylight.controller.cluster.datastore.modification.MergeModification;
+import org.opendaylight.controller.cluster.datastore.modification.WriteModification;
 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
 import org.opendaylight.controller.cluster.datastore.utils.NormalizedNodeAggregator;
 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
@@ -68,16 +75,22 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
 
     @Override
     public CheckedFuture<Boolean, ReadFailedException> exists(final YangInstanceIdentifier path) {
+        return executeRead(shardNameFromIdentifier(path), new DataExists(path, DataStoreVersions.CURRENT_VERSION));
+    }
+
+    private <T> CheckedFuture<T, ReadFailedException> executeRead(String shardName, final AbstractRead<T> readCmd) {
         Preconditions.checkState(type != TransactionType.WRITE_ONLY, "Reads from write-only transactions are not allowed");
 
-        LOG.debug("Tx {} exists {}", getIdentifier(), path);
+        if(LOG.isDebugEnabled()) {
+            LOG.debug("Tx {} {} {}", getIdentifier(), readCmd.getClass().getSimpleName(), readCmd.getPath());
+        }
 
-        final SettableFuture<Boolean> proxyFuture = SettableFuture.create();
-        TransactionContextWrapper contextWrapper = getContextWrapper(path);
+        final SettableFuture<T> proxyFuture = SettableFuture.create();
+        TransactionContextWrapper contextWrapper = getContextWrapper(shardName);
         contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
             @Override
             public void invoke(TransactionContext transactionContext) {
-                transactionContext.dataExists(path, proxyFuture);
+                transactionContext.executeRead(readCmd, proxyFuture);
             }
         });
 
@@ -99,16 +112,7 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
 
     private CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> singleShardRead(
             final String shardName, final YangInstanceIdentifier path) {
-        final SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture = SettableFuture.create();
-        TransactionContextWrapper contextWrapper = getContextWrapper(shardName);
-        contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
-            @Override
-            public void invoke(TransactionContext transactionContext) {
-                transactionContext.readData(path, proxyFuture);
-            }
-        });
-
-        return MappingCheckedFuture.create(proxyFuture, ReadFailedException.MAPPER);
+        return executeRead(shardName, new ReadData(path, DataStoreVersions.CURRENT_VERSION));
     }
 
     private CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readAllData() {
@@ -138,45 +142,32 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
 
     @Override
     public void delete(final YangInstanceIdentifier path) {
-        checkModificationState();
-
-        LOG.debug("Tx {} delete {}", getIdentifier(), path);
-
-        TransactionContextWrapper contextWrapper = getContextWrapper(path);
-        contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
-            @Override
-            public void invoke(TransactionContext transactionContext) {
-                transactionContext.deleteData(path);
-            }
-        });
+        executeModification(new DeleteModification(path));
     }
 
     @Override
     public void merge(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
-        checkModificationState();
-
-        LOG.debug("Tx {} merge {}", getIdentifier(), path);
-
-        TransactionContextWrapper contextWrapper = getContextWrapper(path);
-        contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
-            @Override
-            public void invoke(TransactionContext transactionContext) {
-                transactionContext.mergeData(path, data);
-            }
-        });
+        executeModification(new MergeModification(path, data));
     }
 
     @Override
     public void write(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
+        executeModification(new WriteModification(path, data));
+    }
+
+    private void executeModification(final AbstractModification modification) {
         checkModificationState();
 
-        LOG.debug("Tx {} write {}", getIdentifier(), path);
+        if(LOG.isDebugEnabled()) {
+            LOG.debug("Tx {} executeModification {} {}", getIdentifier(), modification.getClass().getSimpleName(),
+                    modification.getPath());
+        }
 
-        TransactionContextWrapper contextWrapper = getContextWrapper(path);
+        TransactionContextWrapper contextWrapper = getContextWrapper(modification.getPath());
         contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
             @Override
-            public void invoke(TransactionContext transactionContext) {
-                transactionContext.writeData(path, data);
+            protected void invoke(TransactionContext transactionContext) {
+                transactionContext.executeModification(modification);
             }
         });
     }
@@ -247,6 +238,7 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
         return debugContext == null ? ret : new DebugThreePhaseCommitCohort(getIdentifier(), ret, debugContext);
     }
 
+    @SuppressWarnings({ "rawtypes", "unchecked" })
     private AbstractThreePhaseCommitCohort<?> createSingleCommitCohort(final String shardName,
             final TransactionContextWrapper contextWrapper) {
 
@@ -291,18 +283,31 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
     private AbstractThreePhaseCommitCohort<ActorSelection> createMultiCommitCohort(
             final Set<Entry<String, TransactionContextWrapper>> txContextWrapperEntries) {
 
-        final List<Future<ActorSelection>> cohortFutures = new ArrayList<>(txContextWrapperEntries.size());
+        final List<ThreePhaseCommitCohortProxy.CohortInfo> cohorts = new ArrayList<>(txContextWrapperEntries.size());
         for (Entry<String, TransactionContextWrapper> e : txContextWrapperEntries) {
             LOG.debug("Tx {} Readying transaction for shard {}", getIdentifier(), e.getKey());
 
-            cohortFutures.add(e.getValue().readyTransaction());
+            final TransactionContextWrapper wrapper = e.getValue();
+
+            // The remote tx version is obtained the via TransactionContext which may not be available yet so
+            // we pass a Supplier to dynamically obtain it. Once the ready Future is resolved the
+            // TransactionContext is available.
+            Supplier<Short> txVersionSupplier = new Supplier<Short>() {
+                @Override
+                public Short get() {
+                    return wrapper.getTransactionContext().getTransactionVersion();
+                }
+            };
+
+            cohorts.add(new ThreePhaseCommitCohortProxy.CohortInfo(wrapper.readyTransaction(), txVersionSupplier));
         }
 
-        return new ThreePhaseCommitCohortProxy(txContextFactory.getActorContext(), cohortFutures, getIdentifier().toString());
+        return new ThreePhaseCommitCohortProxy(txContextFactory.getActorContext(), cohorts,
+                getIdentifier().toString());
     }
 
-    private static String shardNameFromIdentifier(final YangInstanceIdentifier path) {
-        return ShardStrategyFactory.getStrategy(path).findShard(path);
+    private String shardNameFromIdentifier(final YangInstanceIdentifier path) {
+        return txContextFactory.getActorContext().getShardStrategyFactory().getStrategy(path).findShard(path);
     }
 
     private TransactionContextWrapper getContextWrapper(final YangInstanceIdentifier path) {