From: Robert Varga <rovarga@cisco.com>
Date: Fri, 12 Sep 2014 12:54:29 +0000 (+0200)
Subject: BUG-650: optimize DOMDataBrokerImpl chain creation
X-Git-Tag: release/helium~92
X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=commitdiff_plain;h=66f631835842577ff36a2a36f2acf0fbb1701f86

BUG-650: optimize DOMDataBrokerImpl chain creation

An EnumMap is better than an immutable map when accessing via the
enumeration value. Also add a check for closed factory.

Change-Id: I208005a2b13c0a16cb594da7c74556f4e9a54e50
Signed-off-by: Robert Varga <rovarga@cisco.com>
---

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerImpl.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerImpl.java
index d63d6cbe36..136a8291d2 100644
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerImpl.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerImpl.java
@@ -8,10 +8,14 @@
 package org.opendaylight.controller.md.sal.dom.broker.impl;
 
 import static com.google.common.base.Preconditions.checkState;
-
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.ListeningExecutorService;
+import java.util.EnumMap;
+import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.atomic.AtomicLong;
-
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
@@ -28,11 +32,6 @@ import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Optional;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.util.concurrent.CheckedFuture;
-import com.google.common.util.concurrent.ListeningExecutorService;
-
 public class DOMDataBrokerImpl extends AbstractDOMForwardedTransactionFactory<DOMStore> implements DOMDataBroker,
         AutoCloseable {
 
@@ -49,7 +48,7 @@ public class DOMDataBrokerImpl extends AbstractDOMForwardedTransactionFactory<DO
         this.coordinator = new DOMDataCommitCoordinatorImpl(executor);
     }
 
-    public void setCloseable(AutoCloseable closeable) {
+    public void setCloseable(final AutoCloseable closeable) {
         this.closeable = closeable;
     }
 
@@ -86,13 +85,14 @@ public class DOMDataBrokerImpl extends AbstractDOMForwardedTransactionFactory<DO
 
     @Override
     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
-        ImmutableMap.Builder<LogicalDatastoreType, DOMStoreTransactionChain> backingChainsBuilder = ImmutableMap
-                .builder();
+        checkNotClosed();
+
+        final Map<LogicalDatastoreType, DOMStoreTransactionChain> backingChains = new EnumMap<>(LogicalDatastoreType.class);
         for (Entry<LogicalDatastoreType, DOMStore> entry : getTxFactories().entrySet()) {
-            backingChainsBuilder.put(entry.getKey(), entry.getValue().createTransactionChain());
+            backingChains.put(entry.getKey(), entry.getValue().createTransactionChain());
         }
-        long chainId = chainNum.getAndIncrement();
-        ImmutableMap<LogicalDatastoreType, DOMStoreTransactionChain> backingChains = backingChainsBuilder.build();
+
+        final long chainId = chainNum.getAndIncrement();
         LOG.debug("Transactoin chain {} created with listener {}, backing store chains {}", chainId, listener,
                 backingChains);
         return new DOMDataBrokerTransactionChainImpl(chainId, backingChains, coordinator, listener);
diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
index 227693ca4d..d17b71ec09 100644
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
@@ -6,10 +6,12 @@
  */
 package org.opendaylight.controller.md.sal.dom.broker.impl;
 
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.util.concurrent.CheckedFuture;
+import java.util.Map;
 import java.util.concurrent.atomic.AtomicLong;
-
 import javax.annotation.concurrent.GuardedBy;
-
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
@@ -20,11 +22,6 @@ import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.util.concurrent.CheckedFuture;
-
 /**
  * NormalizedNode implementation of {@link org.opendaylight.controller.md.sal.common.api.data.TransactionChain} which is backed
  * by several {@link DOMStoreTransactionChain} differentiated by provided
@@ -58,7 +55,7 @@ public class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTrans
      *             If any of arguments is null.
      */
     public DOMDataBrokerTransactionChainImpl(final long chainId,
-            final ImmutableMap<LogicalDatastoreType, DOMStoreTransactionChain> chains,
+            final Map<LogicalDatastoreType, DOMStoreTransactionChain> chains,
             final DOMDataCommitExecutor coordinator, final TransactionChainListener listener) {
         super(chains);
         this.chainId = chainId;