Implement scatter/gather on module shards

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / databroker / actors / dds / ClientTransaction.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/ClientTransaction.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/ClientTransaction.java
index 7cdc04aba17b471ea218e3e8060141b9a8a2451e..4fbb49a61d3f23888c99e2d4f258a8601c8dc091 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/ClientTransaction.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/ClientTransaction.java
@@ -14,9 +14,13 @@ import com.google.common.util.concurrent.FluentFuture;
 import java.util.Collection;
 import java.util.Map;
 import java.util.Optional;
+import org.eclipse.jdt.annotation.NonNull;
 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
+import org.opendaylight.controller.cluster.datastore.utils.RootScatterGather;
 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 
 /**
@@ -55,28 +59,57 @@ public class ClientTransaction extends AbstractClientHandle<AbstractProxyTransac
         super(parent, transactionId);
     }
 
-    private AbstractProxyTransaction ensureTransactionProxy(final YangInstanceIdentifier path) {
-        return ensureProxy(path);
-    }
-
     public FluentFuture<Boolean> exists(final YangInstanceIdentifier path) {
-        return ensureTransactionProxy(path).exists(path);
+        return ensureProxy(path).exists(path);
     }
 
     public FluentFuture<Optional<NormalizedNode>> read(final YangInstanceIdentifier path) {
-        return ensureTransactionProxy(path).read(path);
+        return path.isEmpty() ? readRoot() : ensureProxy(path).read(path);
+    }
+
+    private FluentFuture<Optional<NormalizedNode>> readRoot() {
+        return RootScatterGather.gather(parent().actorUtils(), ensureAllProxies()
+            .map(proxy -> proxy.read(YangInstanceIdentifier.empty())));
     }
 
     public void delete(final YangInstanceIdentifier path) {
-        ensureTransactionProxy(path).delete(path);
+        if (path.isEmpty()) {
+            ensureAllProxies().forEach(proxy -> proxy.delete(YangInstanceIdentifier.empty()));
+        } else {
+            ensureProxy(path).delete(path);
+        }
     }
 
     public void merge(final YangInstanceIdentifier path, final NormalizedNode data) {
-        ensureTransactionProxy(path).merge(path, data);
+        if (path.isEmpty()) {
+            mergeRoot(RootScatterGather.castRootNode(data));
+        } else {
+            ensureProxy(path).merge(path, data);
+        }
+    }
+
+    private void mergeRoot(final @NonNull ContainerNode rootData) {
+        if (!rootData.isEmpty()) {
+            RootScatterGather.scatterTouched(rootData, this::ensureProxy).forEach(
+                scattered -> scattered.shard().merge(YangInstanceIdentifier.empty(), scattered.container()));
+        }
     }
 
     public void write(final YangInstanceIdentifier path, final NormalizedNode data) {
-        ensureTransactionProxy(path).write(path, data);
+        if (path.isEmpty()) {
+            writeRoot(RootScatterGather.castRootNode(data));
+        } else {
+            ensureProxy(path).write(path, data);
+        }
+    }
+
+    private void writeRoot(final @NonNull ContainerNode rootData) {
+        RootScatterGather.scatterAll(rootData, this::ensureProxy, ensureAllProxies()).forEach(
+            scattered -> scattered.shard().write(YangInstanceIdentifier.empty(), scattered.container()));
+    }
+
+    private AbstractProxyTransaction ensureProxy(final PathArgument childId) {
+        return ensureProxy(YangInstanceIdentifier.create(childId));
     }
 
     public DOMStoreThreePhaseCommitCohort ready() {