Split out RpcInvocationStrategy

[mdsal.git] / binding / mdsal-binding-dom-adapter / src / main / java / org / opendaylight / mdsal / binding / dom / adapter / RpcInvocationStrategy.java

diff --git a/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/RpcInvocationStrategy.java b/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/RpcInvocationStrategy.java
new file mode 100644 (file)
index 0000000..42aa9ae
--- /dev/null
+++ b/binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/RpcInvocationStrategy.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2022 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.mdsal.binding.dom.adapter;
+
+import static java.util.Objects.requireNonNull;
+import static org.opendaylight.mdsal.binding.dom.adapter.StaticConfiguration.ENABLE_CODEC_SHORTCUT;
+
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.MoreExecutors;
+import java.lang.reflect.Method;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
+import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
+import org.opendaylight.mdsal.dom.api.DOMRpcResult;
+import org.opendaylight.mdsal.dom.spi.ContentRoutedRpcContext;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.RpcResult;
+import org.opendaylight.yangtools.yang.common.YangConstants;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
+import org.opendaylight.yangtools.yang.model.api.stmt.RpcEffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
+
+sealed class RpcInvocationStrategy {
+    private static final class ContentRouted extends RpcInvocationStrategy {
+        private final ContextReferenceExtractor refExtractor;
+        private final NodeIdentifier contextName;
+
+        ContentRouted(final RpcServiceAdapter adapter, final QName rpcName, final QName leafName,
+                final ContextReferenceExtractor refExtractor) {
+            super(adapter, rpcName);
+            contextName = NodeIdentifier.create(leafName);
+            this.refExtractor = requireNonNull(refExtractor);
+        }
+
+        @Override
+        ContainerNode serialize(final NodeIdentifier inputIdentifier, final CurrentAdapterSerializer serializer,
+                final DataObject input) {
+            final var bindingII = refExtractor.extract(input);
+            if (bindingII == null) {
+                return super.serialize(inputIdentifier, serializer, input);
+            }
+
+            final var yangII = serializer.toCachedYangInstanceIdentifier(bindingII);
+            final var contextRef = ImmutableNodes.leafNode(contextName, yangII);
+            return LazySerializedContainerNode.withContextRef(inputIdentifier, input, contextRef, serializer);
+        }
+    }
+
+    private final @NonNull RpcServiceAdapter adapter;
+    private final @NonNull NodeIdentifier inputIdentifier;
+    private final @NonNull Absolute outputPath;
+
+    private RpcInvocationStrategy(final RpcServiceAdapter adapter, final QName rpcName) {
+        this.adapter = requireNonNull(adapter);
+        final var namespace = rpcName.getModule();
+        outputPath = Absolute.of(rpcName, YangConstants.operationOutputQName(namespace).intern()).intern();
+        inputIdentifier = NodeIdentifier.create(YangConstants.operationInputQName(namespace.intern()));
+    }
+
+    static @NonNull RpcInvocationStrategy of(final RpcServiceAdapter adapter, final Method method,
+            final RpcEffectiveStatement schema) {
+        final var contentContext = ContentRoutedRpcContext.forRpc(schema);
+        if (contentContext == null) {
+            return new RpcInvocationStrategy(adapter, schema.argument());
+        }
+
+        return new ContentRouted(adapter, schema.argument(), contentContext.leaf(), ContextReferenceExtractor.from(
+            // FIXME: do not use BindingReflections here
+            BindingReflections.resolveRpcInputClass(method).orElseThrow(
+                () -> new IllegalArgumentException("RPC method " + method.getName() + " has no input"))));
+    }
+
+    final ListenableFuture<RpcResult<?>> invoke(final DataObject input) {
+        return invoke(serialize(inputIdentifier, adapter.currentSerializer(), input));
+    }
+
+    private ListenableFuture<RpcResult<?>> invoke(final ContainerNode input) {
+        final var domFuture = adapter.delegate().invokeRpc(outputPath.firstNodeIdentifier(), input);
+        if (ENABLE_CODEC_SHORTCUT && domFuture instanceof BindingRpcFutureAware bindingAware) {
+            return bindingAware.getBindingFuture();
+        }
+        return transformFuture(domFuture, adapter.currentSerializer());
+    }
+
+    ContainerNode serialize(final @NonNull NodeIdentifier identifier,
+            final @NonNull CurrentAdapterSerializer serializer, final DataObject input) {
+        return LazySerializedContainerNode.create(inputIdentifier, input, serializer);
+    }
+
+    private ListenableFuture<RpcResult<?>> transformFuture(final ListenableFuture<? extends DOMRpcResult> domFuture,
+            final BindingNormalizedNodeSerializer resultCodec) {
+        return Futures.transform(domFuture, input -> {
+            final ContainerNode domData = input.value();
+            final DataObject bindingResult;
+            if (domData != null) {
+                bindingResult = resultCodec.fromNormalizedNodeRpcData(outputPath, domData);
+            } else {
+                bindingResult = null;
+            }
+
+            return RpcResultUtil.rpcResultFromDOM(input.errors(), bindingResult);
+        }, MoreExecutors.directExecutor());
+    }
+}
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