Reduce ObjectRegistration use
[mdsal.git] / dom / mdsal-dom-broker / src / main / java / org / opendaylight / mdsal / dom / broker / DOMRpcRouter.java
index f1fa5a70de1cf0f8a4bb03f6a4af3ea049732181..3b6587a80285a68bdfb22af085506872a8a4ce40 100644 (file)
@@ -7,16 +7,15 @@
  */
 package org.opendaylight.mdsal.dom.broker;
 
+import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Verify.verifyNotNull;
 import static java.util.Objects.requireNonNull;
 
 import com.google.common.annotations.VisibleForTesting;
-import com.google.common.collect.ClassToInstanceMap;
 import com.google.common.collect.Collections2;
-import com.google.common.collect.ImmutableClassToInstanceMap;
 import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableList.Builder;
 import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableTable;
 import com.google.common.collect.MapDifference;
 import com.google.common.collect.MapDifference.ValueDifference;
 import com.google.common.collect.Maps;
@@ -24,19 +23,17 @@ import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
-import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ThreadFactory;
+import javax.annotation.PreDestroy;
 import javax.inject.Inject;
 import javax.inject.Singleton;
 import org.checkerframework.checker.lock.qual.GuardedBy;
@@ -48,39 +45,36 @@ import org.opendaylight.mdsal.dom.api.DOMActionImplementation;
 import org.opendaylight.mdsal.dom.api.DOMActionInstance;
 import org.opendaylight.mdsal.dom.api.DOMActionNotAvailableException;
 import org.opendaylight.mdsal.dom.api.DOMActionProviderService;
-import org.opendaylight.mdsal.dom.api.DOMActionProviderServiceExtension;
 import org.opendaylight.mdsal.dom.api.DOMActionResult;
 import org.opendaylight.mdsal.dom.api.DOMActionService;
-import org.opendaylight.mdsal.dom.api.DOMActionServiceExtension;
 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
 import org.opendaylight.mdsal.dom.api.DOMRpcAvailabilityListener;
 import org.opendaylight.mdsal.dom.api.DOMRpcIdentifier;
 import org.opendaylight.mdsal.dom.api.DOMRpcImplementation;
 import org.opendaylight.mdsal.dom.api.DOMRpcImplementationNotAvailableException;
-import org.opendaylight.mdsal.dom.api.DOMRpcImplementationRegistration;
 import org.opendaylight.mdsal.dom.api.DOMRpcProviderService;
 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
 import org.opendaylight.mdsal.dom.api.DOMRpcService;
 import org.opendaylight.mdsal.dom.api.DOMSchemaService;
-import org.opendaylight.mdsal.dom.spi.AbstractDOMRpcImplementationRegistration;
-import org.opendaylight.yangtools.concepts.AbstractListenerRegistration;
-import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
 import org.opendaylight.yangtools.concepts.AbstractRegistration;
-import org.opendaylight.yangtools.concepts.ListenerRegistration;
-import org.opendaylight.yangtools.concepts.ObjectRegistration;
+import org.opendaylight.yangtools.concepts.Registration;
+import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContextListener;
-import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 @Singleton
-public final class DOMRpcRouter extends AbstractRegistration
-        implements DOMRpcRouterServices, EffectiveModelContextListener {
+@Component(service = DOMRpcRouter.class)
+public final class DOMRpcRouter extends AbstractRegistration implements EffectiveModelContextListener {
+    private static final Logger LOG = LoggerFactory.getLogger(DOMRpcRouter.class);
     private static final ThreadFactory THREAD_FACTORY = new ThreadFactoryBuilder().setNameFormat(
             "DOMRpcRouter-listener-%s").setDaemon(true).build();
 
@@ -91,46 +85,58 @@ public final class DOMRpcRouter extends AbstractRegistration
     private final @NonNull DOMRpcService rpcService = new RpcServiceFacade();
 
     @GuardedBy("this")
-    private Collection<Registration<?>> listeners = Collections.emptyList();
+    private ImmutableList<RpcAvailReg> listeners = ImmutableList.of();
 
     @GuardedBy("this")
-    private Collection<ActionRegistration<?>> actionListeners = Collections.emptyList();
+    private ImmutableList<ActionAvailReg> actionListeners = ImmutableList.of();
 
     private volatile DOMRpcRoutingTable routingTable = DOMRpcRoutingTable.EMPTY;
 
     private volatile DOMActionRoutingTable actionRoutingTable = DOMActionRoutingTable.EMPTY;
 
-    private ListenerRegistration<?> listenerRegistration;
+    private Registration listenerRegistration;
+
+    @Deprecated
+    @VisibleForTesting
+    // FIXME: 9.0.0: make this constructor package-private
+    public DOMRpcRouter() {
+
+    }
 
     @Inject
+    @Activate
+    public DOMRpcRouter(@Reference final DOMSchemaService schemaService) {
+        listenerRegistration = schemaService.registerSchemaContextListener(this);
+        LOG.info("DOM RPC/Action router started");
+    }
+
+    @Deprecated(forRemoval = true)
     public static DOMRpcRouter newInstance(final DOMSchemaService schemaService) {
-        final DOMRpcRouter rpcRouter = new DOMRpcRouter();
-        rpcRouter.listenerRegistration = schemaService.registerSchemaContextListener(rpcRouter);
-        return rpcRouter;
+        return new DOMRpcRouter(schemaService);
     }
 
-    @Override
-    public DOMActionService getActionService() {
+    @PreDestroy
+    @Deactivate
+    public void shutdown() {
+        close();
+    }
+
+    public @NonNull DOMActionService actionService() {
         return actionService;
     }
 
-    @Override
-    public DOMActionProviderService getActionProviderService() {
+    public @NonNull DOMActionProviderService actionProviderService() {
         return actionProviderService;
     }
 
-    @Override
-    public DOMRpcService getRpcService() {
+    public @NonNull DOMRpcService rpcService() {
         return rpcService;
     }
 
-    @Override
-    public DOMRpcProviderService getRpcProviderService() {
+    public @NonNull DOMRpcProviderService rpcProviderService() {
         return rpcProviderService;
     }
 
-    @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
-            justification = "https://github.com/spotbugs/spotbugs/issues/811")
     private synchronized void removeRpcImplementation(final DOMRpcImplementation implementation,
             final Set<DOMRpcIdentifier> rpcs) {
         final DOMRpcRoutingTable oldTable = routingTable;
@@ -140,8 +146,15 @@ public final class DOMRpcRouter extends AbstractRegistration
         listenerNotifier.execute(() -> notifyRemoved(newTable, implementation));
     }
 
-    @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
-            justification = "https://github.com/spotbugs/spotbugs/issues/811")
+    private synchronized void removeRpcImplementations(
+            final ImmutableTable<QName, YangInstanceIdentifier, DOMRpcImplementation> implTable) {
+        final DOMRpcRoutingTable oldTable = routingTable;
+        final DOMRpcRoutingTable newTable = (DOMRpcRoutingTable) oldTable.removeAll(implTable);
+        routingTable = newTable;
+
+        listenerNotifier.execute(() -> notifyRemoved(newTable, implTable.values()));
+    }
+
     private synchronized void removeActionImplementation(final DOMActionImplementation implementation,
             final Set<DOMActionInstance> actions) {
         final DOMActionRoutingTable oldTable = actionRoutingTable;
@@ -151,35 +164,47 @@ public final class DOMRpcRouter extends AbstractRegistration
         listenerNotifier.execute(() -> notifyActionChanged(newTable, implementation));
     }
 
-    @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
-            justification = "https://github.com/spotbugs/spotbugs/issues/811")
-    private synchronized void removeListener(final ListenerRegistration<? extends DOMRpcAvailabilityListener> reg) {
+    private synchronized void removeListener(final RpcAvailReg reg) {
         listeners = ImmutableList.copyOf(Collections2.filter(listeners, input -> !reg.equals(input)));
     }
 
-    @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
-            justification = "https://github.com/spotbugs/spotbugs/issues/811")
-    private synchronized void removeActionListener(final ListenerRegistration<? extends AvailabilityListener> reg) {
+    private synchronized void removeActionListener(final ActionAvailReg reg) {
         actionListeners = ImmutableList.copyOf(Collections2.filter(actionListeners, input -> !reg.equals(input)));
     }
 
-    @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
-            justification = "https://github.com/spotbugs/spotbugs/issues/811")
     private synchronized void notifyAdded(final DOMRpcRoutingTable newTable, final DOMRpcImplementation impl) {
-        for (Registration<?> l : listeners) {
+        for (var l : listeners) {
             l.addRpc(newTable, impl);
         }
     }
 
+    private synchronized void notifyAdded(final DOMRpcRoutingTable newTable,
+            final Collection<? extends DOMRpcImplementation> impls) {
+        for (var l : listeners) {
+            for (var impl : impls) {
+                l.addRpc(newTable, impl);
+            }
+        }
+    }
+
     private synchronized void notifyRemoved(final DOMRpcRoutingTable newTable, final DOMRpcImplementation impl) {
-        for (Registration<?> l : listeners) {
+        for (var l : listeners) {
             l.removeRpc(newTable, impl);
         }
     }
 
+    private synchronized void notifyRemoved(final DOMRpcRoutingTable newTable,
+            final Collection<? extends DOMRpcImplementation> impls) {
+        for (var l : listeners) {
+            for (DOMRpcImplementation impl : impls) {
+                l.removeRpc(newTable, impl);
+            }
+        }
+    }
+
     private synchronized void notifyActionChanged(final DOMActionRoutingTable newTable,
             final DOMActionImplementation impl) {
-        for (ActionRegistration<?> l : actionListeners) {
+        for (var l : actionListeners) {
             l.actionChanged(newTable, impl);
         }
     }
@@ -203,29 +228,35 @@ public final class DOMRpcRouter extends AbstractRegistration
             listenerRegistration = null;
         }
         listenerNotifier.shutdown();
+        LOG.info("DOM RPC/Action router stopped");
     }
 
     @VisibleForTesting
-    synchronized Collection<?> listeners() {
+    synchronized List<?> listeners() {
         return listeners;
     }
 
+    @VisibleForTesting
+    synchronized List<?> actionListeners() {
+        return actionListeners;
+    }
+
     @VisibleForTesting
     DOMRpcRoutingTable routingTable() {
         return routingTable;
     }
 
-    private static final class Registration<T extends DOMRpcAvailabilityListener>
-        extends AbstractListenerRegistration<T> {
+    private static final class RpcAvailReg extends AbstractRegistration {
+        private final DOMRpcAvailabilityListener listener;
 
-        private Map<SchemaPath, Set<YangInstanceIdentifier>> prevRpcs;
+        private Map<QName, Set<YangInstanceIdentifier>> prevRpcs;
         private DOMRpcRouter router;
 
-        Registration(final DOMRpcRouter router, final T listener,
-                final Map<SchemaPath, Set<YangInstanceIdentifier>> rpcs) {
-            super(listener);
+        RpcAvailReg(final DOMRpcRouter router, final DOMRpcAvailabilityListener listener,
+                final Map<QName, Set<YangInstanceIdentifier>> rpcs) {
+            this.listener = requireNonNull(listener);
             this.router = requireNonNull(router);
-            this.prevRpcs = requireNonNull(rpcs);
+            prevRpcs = requireNonNull(rpcs);
         }
 
         @Override
@@ -235,30 +266,28 @@ public final class DOMRpcRouter extends AbstractRegistration
         }
 
         void initialTable() {
-            final Collection<DOMRpcIdentifier> added = new ArrayList<>();
-            for (Entry<SchemaPath, Set<YangInstanceIdentifier>> e : prevRpcs.entrySet()) {
+            final List<DOMRpcIdentifier> added = new ArrayList<>();
+            for (Entry<QName, Set<YangInstanceIdentifier>> e : prevRpcs.entrySet()) {
                 added.addAll(Collections2.transform(e.getValue(), i -> DOMRpcIdentifier.create(e.getKey(), i)));
             }
             if (!added.isEmpty()) {
-                getInstance().onRpcAvailable(added);
+                listener.onRpcAvailable(added);
             }
         }
 
         void addRpc(final DOMRpcRoutingTable newTable, final DOMRpcImplementation impl) {
-            final T l = getInstance();
-            if (!l.acceptsImplementation(impl)) {
+            if (!listener.acceptsImplementation(impl)) {
                 return;
             }
 
-            final Map<SchemaPath, Set<YangInstanceIdentifier>> rpcs = verifyNotNull(newTable.getOperations(l));
-            final MapDifference<SchemaPath, Set<YangInstanceIdentifier>> diff = Maps.difference(prevRpcs, rpcs);
+            final Map<QName, Set<YangInstanceIdentifier>> rpcs = verifyNotNull(newTable.getOperations(listener));
+            final MapDifference<QName, Set<YangInstanceIdentifier>> diff = Maps.difference(prevRpcs, rpcs);
 
-            final Collection<DOMRpcIdentifier> added = new ArrayList<>();
-            for (Entry<SchemaPath, Set<YangInstanceIdentifier>> e : diff.entriesOnlyOnRight().entrySet()) {
+            final List<DOMRpcIdentifier> added = new ArrayList<>();
+            for (Entry<QName, Set<YangInstanceIdentifier>> e : diff.entriesOnlyOnRight().entrySet()) {
                 added.addAll(Collections2.transform(e.getValue(), i -> DOMRpcIdentifier.create(e.getKey(), i)));
             }
-            for (Entry<SchemaPath, ValueDifference<Set<YangInstanceIdentifier>>> e :
-                    diff.entriesDiffering().entrySet()) {
+            for (Entry<QName, ValueDifference<Set<YangInstanceIdentifier>>> e : diff.entriesDiffering().entrySet()) {
                 for (YangInstanceIdentifier i : Sets.difference(e.getValue().rightValue(), e.getValue().leftValue())) {
                     added.add(DOMRpcIdentifier.create(e.getKey(), i));
                 }
@@ -266,25 +295,23 @@ public final class DOMRpcRouter extends AbstractRegistration
 
             prevRpcs = rpcs;
             if (!added.isEmpty()) {
-                l.onRpcAvailable(added);
+                listener.onRpcAvailable(added);
             }
         }
 
         void removeRpc(final DOMRpcRoutingTable newTable, final DOMRpcImplementation impl) {
-            final T l = getInstance();
-            if (!l.acceptsImplementation(impl)) {
+            if (!listener.acceptsImplementation(impl)) {
                 return;
             }
 
-            final Map<SchemaPath, Set<YangInstanceIdentifier>> rpcs = verifyNotNull(newTable.getOperations(l));
-            final MapDifference<SchemaPath, Set<YangInstanceIdentifier>> diff = Maps.difference(prevRpcs, rpcs);
+            final Map<QName, Set<YangInstanceIdentifier>> rpcs = verifyNotNull(newTable.getOperations(listener));
+            final MapDifference<QName, Set<YangInstanceIdentifier>> diff = Maps.difference(prevRpcs, rpcs);
 
-            final Collection<DOMRpcIdentifier> removed = new ArrayList<>();
-            for (Entry<SchemaPath, Set<YangInstanceIdentifier>> e : diff.entriesOnlyOnLeft().entrySet()) {
+            final List<DOMRpcIdentifier> removed = new ArrayList<>();
+            for (Entry<QName, Set<YangInstanceIdentifier>> e : diff.entriesOnlyOnLeft().entrySet()) {
                 removed.addAll(Collections2.transform(e.getValue(), i -> DOMRpcIdentifier.create(e.getKey(), i)));
             }
-            for (Entry<SchemaPath, ValueDifference<Set<YangInstanceIdentifier>>> e :
-                    diff.entriesDiffering().entrySet()) {
+            for (Entry<QName, ValueDifference<Set<YangInstanceIdentifier>>> e : diff.entriesDiffering().entrySet()) {
                 for (YangInstanceIdentifier i : Sets.difference(e.getValue().leftValue(), e.getValue().rightValue())) {
                     removed.add(DOMRpcIdentifier.create(e.getKey(), i));
                 }
@@ -292,22 +319,22 @@ public final class DOMRpcRouter extends AbstractRegistration
 
             prevRpcs = rpcs;
             if (!removed.isEmpty()) {
-                l.onRpcUnavailable(removed);
+                listener.onRpcUnavailable(removed);
             }
         }
     }
 
-    private static final class ActionRegistration<T extends AvailabilityListener>
-        extends AbstractListenerRegistration<T> {
+    private static final class ActionAvailReg extends AbstractRegistration {
+        private final AvailabilityListener listener;
 
-        private Map<SchemaPath, Set<DOMDataTreeIdentifier>> prevActions;
+        private Map<Absolute, Set<DOMDataTreeIdentifier>> prevActions;
         private DOMRpcRouter router;
 
-        ActionRegistration(final DOMRpcRouter router, final T listener,
-                final Map<SchemaPath, Set<DOMDataTreeIdentifier>> actions) {
-            super(listener);
+        ActionAvailReg(final DOMRpcRouter router, final AvailabilityListener listener,
+                final Map<Absolute, Set<DOMDataTreeIdentifier>> actions) {
+            this.listener = requireNonNull(listener);
             this.router = requireNonNull(router);
-            this.prevActions = requireNonNull(actions);
+            prevActions = requireNonNull(actions);
         }
 
         @Override
@@ -317,37 +344,35 @@ public final class DOMRpcRouter extends AbstractRegistration
         }
 
         void initialTable() {
-            final Collection<DOMActionInstance> added = new ArrayList<>();
-            for (Entry<SchemaPath, Set<DOMDataTreeIdentifier>> e : prevActions.entrySet()) {
+            final var added = new ArrayList<DOMActionInstance>();
+            for (var e : prevActions.entrySet()) {
                 added.addAll(Collections2.transform(e.getValue(), i -> DOMActionInstance.of(e.getKey(), i)));
             }
             if (!added.isEmpty()) {
-                getInstance().onActionsChanged(ImmutableSet.of(), ImmutableSet.copyOf(added));
+                listener.onActionsChanged(ImmutableSet.of(), ImmutableSet.copyOf(added));
             }
         }
 
         void actionChanged(final DOMActionRoutingTable newTable, final DOMActionImplementation impl) {
-            final T l = getInstance();
-            if (!l.acceptsImplementation(impl)) {
+            if (!listener.acceptsImplementation(impl)) {
                 return;
             }
 
-            final Map<SchemaPath, Set<DOMDataTreeIdentifier>> actions = verifyNotNull(newTable.getOperations(l));
-            final MapDifference<SchemaPath, Set<DOMDataTreeIdentifier>> diff = Maps.difference(prevActions, actions);
+            final Map<Absolute, Set<DOMDataTreeIdentifier>> actions = verifyNotNull(newTable.getOperations(listener));
+            final MapDifference<Absolute, Set<DOMDataTreeIdentifier>> diff = Maps.difference(prevActions, actions);
 
             final Set<DOMActionInstance> removed = new HashSet<>();
             final Set<DOMActionInstance> added = new HashSet<>();
 
-            for (Entry<SchemaPath, Set<DOMDataTreeIdentifier>> e : diff.entriesOnlyOnLeft().entrySet()) {
+            for (Entry<Absolute, Set<DOMDataTreeIdentifier>> e : diff.entriesOnlyOnLeft().entrySet()) {
                 removed.addAll(Collections2.transform(e.getValue(), i -> DOMActionInstance.of(e.getKey(), i)));
             }
 
-            for (Entry<SchemaPath, Set<DOMDataTreeIdentifier>> e : diff.entriesOnlyOnRight().entrySet()) {
+            for (Entry<Absolute, Set<DOMDataTreeIdentifier>> e : diff.entriesOnlyOnRight().entrySet()) {
                 added.addAll(Collections2.transform(e.getValue(), i -> DOMActionInstance.of(e.getKey(), i)));
             }
 
-            for (Entry<SchemaPath, ValueDifference<Set<DOMDataTreeIdentifier>>> e :
-                diff.entriesDiffering().entrySet()) {
+            for (Entry<Absolute, ValueDifference<Set<DOMDataTreeIdentifier>>> e : diff.entriesDiffering().entrySet()) {
                 for (DOMDataTreeIdentifier i : Sets.difference(e.getValue().leftValue(), e.getValue().rightValue())) {
                     removed.add(DOMActionInstance.of(e.getKey(), i));
                 }
@@ -359,62 +384,52 @@ public final class DOMRpcRouter extends AbstractRegistration
 
             prevActions = actions;
             if (!removed.isEmpty() || !added.isEmpty()) {
-                l.onActionsChanged(removed, added);
-            }
-        }
-    }
-
-    @NonNullByDefault
-    private final class ActionAvailabilityFacade implements DOMActionAvailabilityExtension {
-        @Override
-        public <T extends AvailabilityListener> ListenerRegistration<T> registerAvailabilityListener(final T listener) {
-            synchronized (DOMRpcRouter.this) {
-                final ActionRegistration<T> ret = new ActionRegistration<>(DOMRpcRouter.this,
-                    listener, actionRoutingTable.getOperations(listener));
-                final Builder<ActionRegistration<?>> b = ImmutableList.builder();
-                b.addAll(actionListeners);
-                b.add(ret);
-                actionListeners = b.build();
-
-                listenerNotifier.execute(ret::initialTable);
-                return ret;
+                listener.onActionsChanged(removed, added);
             }
         }
     }
 
     @NonNullByDefault
-    private final class ActionServiceFacade implements DOMActionService {
-        private final ClassToInstanceMap<DOMActionServiceExtension> extensions = ImmutableClassToInstanceMap.of(
-            DOMActionAvailabilityExtension.class, new ActionAvailabilityFacade());
-
+    private final class ActionServiceFacade implements DOMActionService, DOMActionAvailabilityExtension {
         @Override
-        public ClassToInstanceMap<DOMActionServiceExtension> getExtensions() {
-            return extensions;
+        public List<Extension> supportedExtensions() {
+            return List.of(this);
         }
 
         @Override
-        public ListenableFuture<? extends DOMActionResult> invokeAction(final SchemaPath type,
+        public ListenableFuture<? extends DOMActionResult> invokeAction(final Absolute type,
                 final DOMDataTreeIdentifier path, final ContainerNode input) {
+            final YangInstanceIdentifier pathRoot = path.path();
+            checkArgument(!pathRoot.isEmpty(), "Action path must not be empty");
+
             final DOMActionRoutingTableEntry entry = (DOMActionRoutingTableEntry) actionRoutingTable.getEntry(type);
-            if (entry == null) {
-                return Futures.immediateFailedFuture(
+            return entry != null ? OperationInvocation.invoke(entry, type, path, requireNonNull(input))
+                : Futures.immediateFailedFuture(
                     new DOMActionNotAvailableException("No implementation of Action %s available", type));
-            }
+        }
+
+        @Override
+        public Registration registerAvailabilityListener(final AvailabilityListener listener) {
+            synchronized (DOMRpcRouter.this) {
+                final var ret = new ActionAvailReg(DOMRpcRouter.this, listener,
+                    actionRoutingTable.getOperations(listener));
+                actionListeners = ImmutableList.<ActionAvailReg>builder()
+                    .addAll(actionListeners)
+                    .add(ret)
+                    .build();
 
-            return OperationInvocation.invoke(entry, type, path, requireNonNull(input));
+                listenerNotifier.execute(ret::initialTable);
+                return ret;
+            }
         }
     }
 
     @NonNullByDefault
     private final class ActionProviderServiceFacade implements DOMActionProviderService {
         @Override
-        public ClassToInstanceMap<DOMActionProviderServiceExtension> getExtensions() {
-            return ImmutableClassToInstanceMap.of();
-        }
-
-        @Override
-        public <T extends DOMActionImplementation> ObjectRegistration<T> registerActionImplementation(
-            final T implementation, final Set<DOMActionInstance> instances) {
+        public Registration registerActionImplementation(final DOMActionImplementation implementation,
+                final Set<DOMActionInstance> instances) {
+            checkArgument(!instances.isEmpty(), "Instances must not be empty");
 
             synchronized (DOMRpcRouter.this) {
                 final DOMActionRoutingTable oldTable = actionRoutingTable;
@@ -424,10 +439,10 @@ public final class DOMRpcRouter extends AbstractRegistration
                 listenerNotifier.execute(() -> notifyActionChanged(newTable, implementation));
             }
 
-            return new AbstractObjectRegistration<>(implementation) {
+            return new AbstractRegistration() {
                 @Override
                 protected void removeRegistration() {
-                    removeActionImplementation(getInstance(), instances);
+                    removeActionImplementation(implementation, instances);
                 }
             };
         }
@@ -435,9 +450,8 @@ public final class DOMRpcRouter extends AbstractRegistration
 
     private final class RpcServiceFacade implements DOMRpcService {
         @Override
-        public ListenableFuture<? extends DOMRpcResult> invokeRpc(final SchemaPath type,
-                final NormalizedNode<?, ?> input) {
-            final AbstractDOMRpcRoutingTableEntry entry = (AbstractDOMRpcRoutingTableEntry) routingTable.getEntry(type);
+        public ListenableFuture<? extends DOMRpcResult> invokeRpc(final QName type, final ContainerNode input) {
+            final var entry = (AbstractDOMRpcRoutingTableEntry) routingTable.getEntry(type);
             if (entry == null) {
                 return Futures.immediateFailedFuture(
                     new DOMRpcImplementationNotAvailableException("No implementation of RPC %s available", type));
@@ -447,14 +461,10 @@ public final class DOMRpcRouter extends AbstractRegistration
         }
 
         @Override
-        public <T extends DOMRpcAvailabilityListener> ListenerRegistration<T> registerRpcListener(final T listener) {
+        public Registration registerRpcListener(final DOMRpcAvailabilityListener listener) {
             synchronized (DOMRpcRouter.this) {
-                final Registration<T> ret = new Registration<>(DOMRpcRouter.this, listener,
-                    routingTable.getOperations(listener));
-                final Builder<Registration<?>> b = ImmutableList.builder();
-                b.addAll(listeners);
-                b.add(ret);
-                listeners = b.build();
+                final var ret = new RpcAvailReg(DOMRpcRouter.this, listener, routingTable.getOperations(listener));
+                listeners = ImmutableList.<RpcAvailReg>builder().addAll(listeners).add(ret).build();
 
                 listenerNotifier.execute(ret::initialTable);
                 return ret;
@@ -464,14 +474,8 @@ public final class DOMRpcRouter extends AbstractRegistration
 
     private final class RpcProviderServiceFacade implements DOMRpcProviderService {
         @Override
-        public <T extends DOMRpcImplementation> DOMRpcImplementationRegistration<T> registerRpcImplementation(
-            final T implementation, final DOMRpcIdentifier... rpcs) {
-            return registerRpcImplementation(implementation, ImmutableSet.copyOf(rpcs));
-        }
-
-        @Override
-        public <T extends DOMRpcImplementation> DOMRpcImplementationRegistration<T> registerRpcImplementation(
-            final T implementation, final Set<DOMRpcIdentifier> rpcs) {
+        public Registration registerRpcImplementation(final DOMRpcImplementation implementation,
+                final Set<DOMRpcIdentifier> rpcs) {
 
             synchronized (DOMRpcRouter.this) {
                 final DOMRpcRoutingTable oldTable = routingTable;
@@ -481,88 +485,39 @@ public final class DOMRpcRouter extends AbstractRegistration
                 listenerNotifier.execute(() -> notifyAdded(newTable, implementation));
             }
 
-            return new AbstractDOMRpcImplementationRegistration<>(implementation) {
+            return new AbstractRegistration() {
                 @Override
                 protected void removeRegistration() {
-                    removeRpcImplementation(getInstance(), rpcs);
+                    removeRpcImplementation(implementation, rpcs);
                 }
             };
         }
-    }
-
-    static final class OperationInvocation {
-        private static final Logger LOG = LoggerFactory.getLogger(OperationInvocation.class);
 
-        static ListenableFuture<? extends DOMActionResult> invoke(final DOMActionRoutingTableEntry entry,
-                final SchemaPath type, final DOMDataTreeIdentifier path, final ContainerNode input) {
-            return entry.getImplementations(path).get(0).invokeAction(type, path, input);
-        }
+        @Override
+        public Registration registerRpcImplementations(final Map<DOMRpcIdentifier, DOMRpcImplementation> map) {
+            checkArgument(!map.isEmpty());
 
-        static ListenableFuture<? extends DOMRpcResult> invoke(final AbstractDOMRpcRoutingTableEntry entry,
-                final NormalizedNode<?, ?> input) {
-            if (entry instanceof UnknownDOMRpcRoutingTableEntry) {
-                return Futures.immediateFailedFuture(
-                    new DOMRpcImplementationNotAvailableException("SchemaPath %s is not resolved to an RPC",
-                        entry.getType()));
-            } else if (entry instanceof RoutedDOMRpcRoutingTableEntry) {
-                return invokeRoutedRpc((RoutedDOMRpcRoutingTableEntry) entry, input);
-            } else if (entry instanceof GlobalDOMRpcRoutingTableEntry) {
-                return invokeGlobalRpc((GlobalDOMRpcRoutingTableEntry) entry, input);
+            final var builder = ImmutableTable.<QName, YangInstanceIdentifier, DOMRpcImplementation>builder();
+            for (var entry : map.entrySet()) {
+                final var id = entry.getKey();
+                builder.put(id.getType(), id.getContextReference(), entry.getValue());
             }
+            final var implTable = builder.build();
 
-            return Futures.immediateFailedFuture(
-                new DOMRpcImplementationNotAvailableException("Unsupported RPC entry."));
-        }
-
-        private static ListenableFuture<? extends DOMRpcResult> invokeRoutedRpc(
-                final RoutedDOMRpcRoutingTableEntry entry, final NormalizedNode<?, ?> input) {
-            final Optional<NormalizedNode<?, ?>> maybeKey = NormalizedNodes.findNode(input,
-                entry.getRpcId().getContextReference());
-
-            // Routing key is present, attempt to deliver as a routed RPC
-            if (maybeKey.isPresent()) {
-                final NormalizedNode<?, ?> key = maybeKey.get();
-                final Object value = key.getValue();
-                if (value instanceof YangInstanceIdentifier) {
-                    final YangInstanceIdentifier iid = (YangInstanceIdentifier) value;
-
-                    // Find a DOMRpcImplementation for a specific iid
-                    final List<DOMRpcImplementation> specificImpls = entry.getImplementations(iid);
-                    if (specificImpls != null) {
-                        return specificImpls.get(0)
-                            .invokeRpc(DOMRpcIdentifier.create(entry.getType(), iid), input);
-                    }
-
-                    LOG.debug("No implementation for context {} found will now look for wildcard id", iid);
-
-                    // Find a DOMRpcImplementation for a wild card. Usually remote-rpc-connector would register an
-                    // implementation this way
-                    final List<DOMRpcImplementation> mayBeRemoteImpls =
-                        entry.getImplementations(YangInstanceIdentifier.empty());
-
-                    if (mayBeRemoteImpls != null) {
-                        return mayBeRemoteImpls.get(0)
-                            .invokeRpc(DOMRpcIdentifier.create(entry.getType(), iid), input);
-                    }
-
-                } else {
-                    LOG.warn("Ignoring wrong context value {}", value);
-                }
-            }
+            synchronized (DOMRpcRouter.this) {
+                final DOMRpcRoutingTable oldTable = routingTable;
+                final DOMRpcRoutingTable newTable = (DOMRpcRoutingTable) oldTable.addAll(implTable);
+                routingTable = newTable;
 
-            final List<DOMRpcImplementation> impls = entry.getImplementations(null);
-            if (impls != null) {
-                return impls.get(0).invokeRpc(entry.getRpcId(), input);
+                listenerNotifier.execute(() -> notifyAdded(newTable, implTable.values()));
             }
 
-            return Futures.immediateFailedFuture(
-                new DOMRpcImplementationNotAvailableException("No implementation of RPC %s available",
-                    entry.getType()));
-        }
-
-        private static ListenableFuture<? extends DOMRpcResult> invokeGlobalRpc(
-                final GlobalDOMRpcRoutingTableEntry entry, final NormalizedNode<?, ?> input) {
-            return entry.getImplementations(YangInstanceIdentifier.empty()).get(0).invokeRpc(entry.getRpcId(), input);
+            return new AbstractRegistration() {
+                @Override
+                protected void removeRegistration() {
+                    removeRpcImplementations(implTable);
+                }
+            };
         }
     }
 }