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%2FTransactionProxy.java;h=f645608dd9b96c327153c804f544a0b2eacb16b3;hp=e7a00042e4146c5ddc03a013e6eeda3198a38ea3;hb=e448e4e5f1f071aa61152b2f49b239d878c0a580;hpb=233db109dea38ed45ca3c48eba04f302e38a9139

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 e7a00042e4..f645608dd9 100644
--- 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
@@ -24,10 +24,14 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
-import java.util.concurrent.Semaphore;
-import java.util.concurrent.TimeUnit;
 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;
@@ -53,12 +57,10 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
     }
     private static final Logger LOG = LoggerFactory.getLogger(TransactionProxy.class);
 
-    private final Map<String, TransactionContextWrapper> txContextAdapters = new HashMap<>();
+    private final Map<String, TransactionContextWrapper> txContextWrappers = new HashMap<>();
     private final AbstractTransactionContextFactory<?> txContextFactory;
     private final TransactionType type;
     private TransactionState state = TransactionState.OPEN;
-    private volatile OperationCompleter operationCompleter;
-    private volatile Semaphore operationLimiter;
 
     @VisibleForTesting
     public TransactionProxy(final AbstractTransactionContextFactory<?> txContextFactory, final TransactionType type) {
@@ -72,18 +74,22 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
 
     @Override
     public CheckedFuture<Boolean, ReadFailedException> exists(final YangInstanceIdentifier path) {
-        Preconditions.checkState(type != TransactionType.WRITE_ONLY, "Reads from write-only transactions are not allowed");
+        return executeRead(shardNameFromIdentifier(path), new DataExists(path, DataStoreVersions.CURRENT_VERSION));
+    }
 
-        LOG.debug("Tx {} exists {}", getIdentifier(), path);
+    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");
 
-        throttleOperation();
+        if(LOG.isDebugEnabled()) {
+            LOG.debug("Tx {} {} {}", getIdentifier(), readCmd.getClass().getSimpleName(), readCmd.getPath());
+        }
 
-        final SettableFuture<Boolean> proxyFuture = SettableFuture.create();
-        TransactionContextWrapper contextAdapter = getContextAdapter(path);
-        contextAdapter.maybeExecuteTransactionOperation(new TransactionOperation() {
+        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);
             }
         });
 
@@ -99,24 +105,13 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
         if (YangInstanceIdentifier.EMPTY.equals(path)) {
             return readAllData();
         } else {
-            throttleOperation();
-
             return singleShardRead(shardNameFromIdentifier(path), path);
         }
     }
 
     private CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> singleShardRead(
             final String shardName, final YangInstanceIdentifier path) {
-        final SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture = SettableFuture.create();
-        TransactionContextWrapper contextAdapter = getContextAdapter(shardName);
-        contextAdapter.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() {
@@ -146,51 +141,32 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
 
     @Override
     public void delete(final YangInstanceIdentifier path) {
-        checkModificationState();
-
-        LOG.debug("Tx {} delete {}", getIdentifier(), path);
-
-        throttleOperation();
-
-        TransactionContextWrapper contextAdapter = getContextAdapter(path);
-        contextAdapter.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);
-
-        throttleOperation();
-
-        TransactionContextWrapper contextAdapter = getContextAdapter(path);
-        contextAdapter.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) {
-        checkModificationState();
+        executeModification(new WriteModification(path, data));
+    }
 
-        LOG.debug("Tx {} write {}", getIdentifier(), path);
+    private void executeModification(final AbstractModification modification) {
+        checkModificationState();
 
-        throttleOperation();
+        if(LOG.isDebugEnabled()) {
+            LOG.debug("Tx {} executeModification {} {}", getIdentifier(), modification.getClass().getSimpleName(),
+                    modification.getPath());
+        }
 
-        TransactionContextWrapper contextAdapter = getContextAdapter(path);
-        contextAdapter.maybeExecuteTransactionOperation(new TransactionOperation() {
+        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);
             }
         });
     }
@@ -220,8 +196,8 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
             return;
         }
 
-        for (TransactionContextWrapper contextAdapter : txContextAdapters.values()) {
-            contextAdapter.maybeExecuteTransactionOperation(new TransactionOperation() {
+        for (TransactionContextWrapper contextWrapper : txContextWrappers.values()) {
+            contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
                 @Override
                 public void invoke(TransactionContext transactionContext) {
                     transactionContext.closeTransaction();
@@ -230,7 +206,7 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
         }
 
 
-        txContextAdapters.clear();
+        txContextWrappers.clear();
     }
 
     @Override
@@ -240,19 +216,19 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
         final boolean success = seal(TransactionState.READY);
         Preconditions.checkState(success, "Transaction %s is %s, it cannot be readied", getIdentifier(), state);
 
-        LOG.debug("Tx {} Readying {} components for commit", getIdentifier(), txContextAdapters.size());
+        LOG.debug("Tx {} Readying {} components for commit", getIdentifier(), txContextWrappers.size());
 
         final AbstractThreePhaseCommitCohort<?> ret;
-        switch (txContextAdapters.size()) {
+        switch (txContextWrappers.size()) {
         case 0:
             ret = NoOpDOMStoreThreePhaseCommitCohort.INSTANCE;
             break;
         case 1:
-            final Entry<String, TransactionContextWrapper> e = Iterables.getOnlyElement(txContextAdapters.entrySet());
+            final Entry<String, TransactionContextWrapper> e = Iterables.getOnlyElement(txContextWrappers.entrySet());
             ret = createSingleCommitCohort(e.getKey(), e.getValue());
             break;
         default:
-            ret = createMultiCommitCohort(txContextAdapters.entrySet());
+            ret = createMultiCommitCohort(txContextWrappers.entrySet());
         }
 
         txContextFactory.onTransactionReady(getIdentifier(), ret.getCohortFutures());
@@ -262,19 +238,18 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
     }
 
     private AbstractThreePhaseCommitCohort<?> createSingleCommitCohort(final String shardName,
-            final TransactionContextWrapper contextAdapter) {
-        throttleOperation();
+            final TransactionContextWrapper contextWrapper) {
 
         LOG.debug("Tx {} Readying transaction for shard {}", getIdentifier(), shardName);
 
         final OperationCallback.Reference operationCallbackRef =
                 new OperationCallback.Reference(OperationCallback.NO_OP_CALLBACK);
 
-        final TransactionContext transactionContext = contextAdapter.getTransactionContext();
+        final TransactionContext transactionContext = contextWrapper.getTransactionContext();
         final Future future;
         if (transactionContext == null) {
             final Promise promise = akka.dispatch.Futures.promise();
-            contextAdapter.maybeExecuteTransactionOperation(new TransactionOperation() {
+            contextWrapper.maybeExecuteTransactionOperation(new TransactionOperation() {
                 @Override
                 public void invoke(TransactionContext transactionContext) {
                     promise.completeWith(getReadyOrDirectCommitFuture(transactionContext, operationCallbackRef));
@@ -304,53 +279,34 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
     }
 
     private AbstractThreePhaseCommitCohort<ActorSelection> createMultiCommitCohort(
-            final Set<Entry<String, TransactionContextWrapper>> txContextAdapterEntries) {
+            final Set<Entry<String, TransactionContextWrapper>> txContextWrapperEntries) {
 
-        throttleOperation();
-        final List<Future<ActorSelection>> cohortFutures = new ArrayList<>(txContextAdapterEntries.size());
-        for (Entry<String, TransactionContextWrapper> e : txContextAdapterEntries) {
+        final List<Future<ActorSelection>> cohortFutures = new ArrayList<>(txContextWrapperEntries.size());
+        for (Entry<String, TransactionContextWrapper> e : txContextWrapperEntries) {
             LOG.debug("Tx {} Readying transaction for shard {}", getIdentifier(), e.getKey());
 
-            TransactionContextWrapper contextAdapter = e.getValue();
-            final TransactionContext transactionContext = contextAdapter.getTransactionContext();
-            Future<ActorSelection> future;
-            if (transactionContext != null) {
-                // avoid the creation of a promise and a TransactionOperation
-                future = transactionContext.readyTransaction();
-            } else {
-                final Promise<ActorSelection> promise = akka.dispatch.Futures.promise();
-                contextAdapter.maybeExecuteTransactionOperation(new TransactionOperation() {
-                    @Override
-                    public void invoke(TransactionContext transactionContext) {
-                        promise.completeWith(transactionContext.readyTransaction());
-                    }
-                });
-
-                future = promise.future();
-            }
-
-            cohortFutures.add(future);
+            cohortFutures.add(e.getValue().readyTransaction());
         }
 
         return new ThreePhaseCommitCohortProxy(txContextFactory.getActorContext(), cohortFutures, 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 getContextAdapter(final YangInstanceIdentifier path) {
-        return getContextAdapter(shardNameFromIdentifier(path));
+    private TransactionContextWrapper getContextWrapper(final YangInstanceIdentifier path) {
+        return getContextWrapper(shardNameFromIdentifier(path));
     }
 
-    private TransactionContextWrapper getContextAdapter(final String shardName) {
-        final TransactionContextWrapper existing = txContextAdapters.get(shardName);
+    private TransactionContextWrapper getContextWrapper(final String shardName) {
+        final TransactionContextWrapper existing = txContextWrappers.get(shardName);
         if (existing != null) {
             return existing;
         }
 
-        final TransactionContextWrapper fresh = txContextFactory.newTransactionAdapter(this, shardName);
-        txContextAdapters.put(shardName, fresh);
+        final TransactionContextWrapper fresh = txContextFactory.newTransactionContextWrapper(this, shardName);
+        txContextWrappers.put(shardName, fresh);
         return fresh;
     }
 
@@ -365,44 +321,4 @@ public class TransactionProxy extends AbstractDOMStoreTransaction<TransactionIde
     ActorContext getActorContext() {
         return txContextFactory.getActorContext();
     }
-
-    OperationCompleter getCompleter() {
-        OperationCompleter ret = operationCompleter;
-        if (ret == null) {
-            final Semaphore s = getLimiter();
-            ret = new OperationCompleter(s);
-            operationCompleter = ret;
-        }
-
-        return ret;
-    }
-
-    Semaphore getLimiter() {
-        Semaphore ret = operationLimiter;
-        if (ret == null) {
-            // Note : Currently mailbox-capacity comes from akka.conf and not from the config-subsystem
-            ret = new Semaphore(getActorContext().getTransactionOutstandingOperationLimit());
-            operationLimiter = ret;
-        }
-        return ret;
-    }
-
-    void throttleOperation() {
-        throttleOperation(1);
-    }
-
-    private void throttleOperation(int acquirePermits) {
-        try {
-            if (!getLimiter().tryAcquire(acquirePermits,
-                getActorContext().getDatastoreContext().getOperationTimeoutInSeconds(), TimeUnit.SECONDS)){
-                LOG.warn("Failed to acquire operation permit for transaction {}", getIdentifier());
-            }
-        } catch (InterruptedException e) {
-            if (LOG.isDebugEnabled()) {
-                LOG.debug("Interrupted when trying to acquire operation permit for transaction {}", getIdentifier(), e);
-            } else {
-                LOG.warn("Interrupted when trying to acquire operation permit for transaction {}", getIdentifier());
-            }
-        }
-    }
 }