Removed uncessary calls to RpcBroker to find routes.
[controller.git] / opendaylight / md-sal / sal-remoterpc-connector / src / main / java / org / opendaylight / controller / remote / rpc / RemoteRpcImplementation.java
index 0f84abb22e8e6ca92d36e5486dac0f08ba699720..2886fd987918a99cbe90b5144914439d9d1dc1be 100644 (file)
@@ -1,95 +1,79 @@
 package org.opendaylight.controller.remote.rpc;
 
+import static akka.pattern.Patterns.ask;
+
 import akka.actor.ActorRef;
 import akka.dispatch.OnComplete;
-import com.google.common.util.concurrent.ListenableFuture;
-import com.google.common.util.concurrent.SettableFuture;
-import org.opendaylight.controller.remote.rpc.messages.InvokeRpc;
-import org.opendaylight.controller.remote.rpc.messages.RpcResponse;
-import org.opendaylight.controller.sal.core.api.RoutedRpcDefaultImplementation;
-import org.opendaylight.controller.sal.core.api.RpcImplementation;
-import org.opendaylight.controller.xml.codec.XmlUtils;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.common.RpcError.ErrorType;
-import org.opendaylight.yangtools.yang.common.RpcResult;
-import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
-import org.opendaylight.yangtools.yang.data.api.CompositeNode;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import akka.japi.Pair;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import java.util.List;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationNotAvailableException;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
+import org.opendaylight.controller.remote.rpc.messages.ExecuteRpc;
+import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
+import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.FindRoutersReply;
+import org.opendaylight.controller.remote.rpc.utils.LatestEntryRoutingLogic;
+import org.opendaylight.controller.sal.connector.api.RpcRouter;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import scala.concurrent.ExecutionContext;
+import scala.concurrent.Future;
 
-import java.util.Collections;
-import java.util.Set;
-
-import static akka.pattern.Patterns.ask;
-
-public class RemoteRpcImplementation implements RpcImplementation, RoutedRpcDefaultImplementation {
+public class RemoteRpcImplementation implements DOMRpcImplementation {
     private static final Logger LOG = LoggerFactory.getLogger(RemoteRpcImplementation.class);
-    private final ActorRef rpcBroker;
-    private final SchemaContext schemaContext;
+
+    private final ActorRef rpcRegistry;
     private final RemoteRpcProviderConfig config;
 
-    public RemoteRpcImplementation(ActorRef rpcBroker, SchemaContext schemaContext, RemoteRpcProviderConfig config) {
-        this.rpcBroker = rpcBroker;
-        this.schemaContext = schemaContext;
+    public RemoteRpcImplementation(final ActorRef rpcRegistry, final RemoteRpcProviderConfig config) {
         this.config = config;
+        this.rpcRegistry = rpcRegistry;
     }
 
     @Override
-    public ListenableFuture<RpcResult<CompositeNode>> invokeRpc(QName rpc,
-            YangInstanceIdentifier identifier, CompositeNode input) {
-        InvokeRpc rpcMsg = new InvokeRpc(rpc, identifier, input);
-
-        return executeMsg(rpcMsg);
-    }
-
-    @Override
-    public Set<QName> getSupportedRpcs() {
-        // TODO : check if we need to get this from routing registry
-        return Collections.emptySet();
-    }
-
-    @Override
-    public ListenableFuture<RpcResult<CompositeNode>> invokeRpc(QName rpc, CompositeNode input) {
-        InvokeRpc rpcMsg = new InvokeRpc(rpc, null, input);
-        return executeMsg(rpcMsg);
-    }
-
-    private ListenableFuture<RpcResult<CompositeNode>> executeMsg(InvokeRpc rpcMsg) {
-
-        final SettableFuture<RpcResult<CompositeNode>> listenableFuture = SettableFuture.create();
-
-        scala.concurrent.Future<Object> future = ask(rpcBroker, rpcMsg, config.getAskDuration());
+    public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final DOMRpcIdentifier rpc,
+            final NormalizedNode<?, ?> input) {
+        if (input instanceof RemoteRpcInput) {
+            LOG.warn("Rpc {} was removed during execution or there is loop present. Failing received rpc.", rpc);
+            return Futures
+                    .<DOMRpcResult, DOMRpcException>immediateFailedCheckedFuture(new DOMRpcImplementationNotAvailableException(
+                            "Rpc implementation for {} was removed during processing.", rpc));
+        }
+        final RemoteDOMRpcFuture frontEndFuture = RemoteDOMRpcFuture.create(rpc.getType().getLastComponent());
+        findRouteAsync(rpc).onComplete(new OnComplete<FindRoutersReply>() {
 
-        OnComplete<Object> onComplete = new OnComplete<Object>() {
             @Override
-            public void onComplete(Throwable failure, Object reply) throws Throwable {
-                if(failure != null) {
-                    LOG.error("InvokeRpc failed", failure);
-
-                    RpcResult<CompositeNode> rpcResult;
-                    if(failure instanceof RpcErrorsException) {
-                        rpcResult = RpcResultBuilder.<CompositeNode>failed().withRpcErrors(
-                                ((RpcErrorsException)failure).getRpcErrors()).build();
+            public void onComplete(final Throwable error, final FindRoutersReply routes) throws Throwable {
+                if (error != null) {
+                    frontEndFuture.failNow(error);
+                } else {
+                    final List<Pair<ActorRef, Long>> routePairs = routes.getRouterWithUpdateTime();
+                    if (routePairs == null || routePairs.isEmpty()) {
+                        frontEndFuture.failNow(new DOMRpcImplementationNotAvailableException(
+                                "No local or remote implementation available for rpc %s", rpc.getType(), error));
                     } else {
-                        rpcResult = RpcResultBuilder.<CompositeNode>failed().withError(
-                                ErrorType.RPC, failure.getMessage(), failure).build();
+                        final ActorRef remoteImplRef = new LatestEntryRoutingLogic(routePairs).select();
+                        final Object executeRpcMessage = ExecuteRpc.from(rpc, input);
+                        LOG.debug("Found remote actor {} for rpc {} - sending {}", remoteImplRef, rpc.getType(), executeRpcMessage);
+                        frontEndFuture.completeWith(ask(remoteImplRef, executeRpcMessage, config.getAskDuration()));
                     }
-
-                    listenableFuture.set(rpcResult);
-                    return;
                 }
-
-                RpcResponse rpcReply = (RpcResponse)reply;
-                CompositeNode result = XmlUtils.xmlToCompositeNode(rpcReply.getResultCompositeNode());
-                listenableFuture.set(RpcResultBuilder.success(result).build());
             }
-        };
-
-        future.onComplete(onComplete, ExecutionContext.Implicits$.MODULE$.global());
+        }, ExecutionContext.Implicits$.MODULE$.global());
+        return frontEndFuture;
+    }
 
-        return listenableFuture;
+    @SuppressWarnings({"unchecked", "rawtypes"})
+    private Future<FindRoutersReply> findRouteAsync(final DOMRpcIdentifier rpc) {
+        // FIXME: Refactor routeId and message to use DOMRpcIdentifier directly.
+        final RpcRouter.RouteIdentifier<?, ?, ?> routeId =
+                new RouteIdentifierImpl(null, rpc.getType().getLastComponent(), rpc.getContextReference());
+        final RpcRegistry.Messages.FindRouters findMsg = new RpcRegistry.Messages.FindRouters(routeId);
+        return (Future) ask(rpcRegistry, findMsg, config.getAskDuration());
     }
 }