HONEYCOMB-363 - Bgp extension modules

Provides maven modules per bgp extension.
Defines common configuration that can be used to define new
extensions(AbstractBgpExtensionModule).

Change-Id: I1c8ff65b6f9aa5474026f4bdf42476bd0559208e
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

8 files changed, 460 insertions, 0 deletions

diff --git a/infra/northbound/bgp-extensions/extension-common/asciidoc/Readme.adoc b/infra/northbound/bgp-extensions/extension-common/asciidoc/Readme.adoc
new file mode 100644
index 000000000..2969ad353
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/asciidoc/Readme.adoc
@@ -0,0 +1,5 @@
+= extension-common
+
+Contains common features used by BGP extension modules.
+
+To create new BGP extension module, use parent class *AbstractBgpExtensionModule*
\ No newline at end of file
diff --git a/infra/northbound/bgp-extensions/extension-common/pom.xml b/infra/northbound/bgp-extensions/extension-common/pom.xml
new file mode 100644
index 000000000..b6ea4cc72
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/pom.xml
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2017 Cisco and/or its affiliates.
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at:
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>impl-parent</artifactId>
+        <groupId>io.fd.honeycomb.common</groupId>
+        <version>1.18.01-SNAPSHOT</version>
+        <relativePath>../../../../common/impl-parent</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>io.fd.honeycomb.northbound.bgp</groupId>
+    <artifactId>extension-common</artifactId>
+    <version>1.18.01-SNAPSHOT</version>
+
+    <dependencies>
+        <!-- DI-->
+        <dependency>
+            <groupId>com.google.inject</groupId>
+            <artifactId>guice</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.opendaylight.bgpcep</groupId>
+            <artifactId>bgp-rib-spi</artifactId>
+            <version>${bgpcep.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.opendaylight.bgpcep</groupId>
+            <artifactId>bgp-openconfig-api</artifactId>
+            <version>${bgpcep.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.opendaylight.bgpcep</groupId>
+            <artifactId>bgp-openconfig-spi</artifactId>
+            <version>${bgpcep.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>binding-init</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.inject.extensions</groupId>
+            <artifactId>guice-multibindings</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>cfg-init</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.opendaylight.bgpcep</groupId>
+            <artifactId>bgp-parser-impl</artifactId>
+            <version>${bgpcep.version}</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/AbstractBgpExtensionModule.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/AbstractBgpExtensionModule.java
new file mode 100644
index 000000000..caab1a83f
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/AbstractBgpExtensionModule.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Singleton;
+import com.google.inject.multibindings.Multibinder;
+import io.fd.honeycomb.translate.write.WriterFactory;
+import org.opendaylight.protocol.bgp.openconfig.spi.BGPTableTypeRegistryConsumer;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderActivator;
+import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionProviderActivator;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.AfiSafi;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.types.rev151009.AfiSafiType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.ApplicationRib;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+
+import javax.annotation.Nonnull;
+
+/**
+ * General blueprint for any module that wants to bind new BGP extension
+ */
+public abstract class AbstractBgpExtensionModule extends AbstractModule implements BgpExtensionModule {
+
+    public static final InstanceIdentifier<Tables> TABLES_IID = InstanceIdentifier.create(ApplicationRib.class).child(Tables.class);
+
+    @Override
+    protected void configure() {
+        bindRibActivators();
+        bindExtensionActivators();
+        bindTableTypes();
+        bindAfiSafis();
+        bindApplicationRibWriters();
+        bind(BGPTableTypeRegistryConsumer.class).toProvider(BGPTableTypeRegistryConsumerProvider.class)
+                .in(Singleton.class);
+
+        configureAlso();
+
+        // TODO(HONEYCOMB-395): should all afi-safis use the same send-max value?
+    }
+
+    protected abstract Logger getLogger();
+
+    private void bindAfiSafis() {
+        final Multibinder<AfiSafi> afiSafiBinder = Multibinder.newSetBinder(binder(), AfiSafi.class);
+        getAfiSafiTypeProviders().stream()
+                .peek(aClass -> getLogger().debug("Binding afi {}", aClass))
+                .forEach(providerClass -> afiSafiBinder.addBinding().toProvider(providerClass));
+    }
+
+    private void bindRibActivators() {
+        final Multibinder<RIBExtensionProviderActivator> ribBinder = Multibinder.newSetBinder(binder(),
+                RIBExtensionProviderActivator.class);
+        getRibActivators().stream()
+                .peek(aClass -> getLogger().debug("Binding RIB activator {}", aClass))
+                .forEach(activator -> ribBinder.addBinding().to(activator));
+    }
+
+    private void bindExtensionActivators() {
+        final Multibinder<BGPExtensionProviderActivator> extensionsBinder = Multibinder.newSetBinder(binder(),
+                BGPExtensionProviderActivator.class);
+        getExtensionActivators().stream()
+                .peek(aClass -> getLogger().debug("Binding Extension activator {}", aClass))
+                .forEach(activator -> extensionsBinder.addBinding().to(activator));
+    }
+
+    private void bindTableTypes() {
+        final Multibinder<BGPTableTypeRegistryConsumerProvider.BGPTableType> tableTypeBinder =
+                Multibinder.newSetBinder(binder(), BGPTableTypeRegistryConsumerProvider.BGPTableType.class);
+        getTableTypes().stream()
+                .peek(tableTypeRegistration -> getLogger().debug("Binding table type {}", tableTypeRegistration))
+                .forEach(registration -> tableTypeBinder.addBinding()
+                        .toInstance(provider -> provider.registerBGPTableType(registration.addressFamily, registration.subsequentAddressFamily, registration.afiSafiType)));
+    }
+
+    private void bindApplicationRibWriters() {
+        final Multibinder<WriterFactory> applicationRibWritersBinder = Multibinder.newSetBinder(binder(), WriterFactory.class);
+
+        getApplicationRibWriters().stream()
+                .peek(aClass -> getLogger().debug("Binding writer factory {}", aClass))
+                .forEach(aClass -> applicationRibWritersBinder.addBinding().to(aClass));
+    }
+
+    static final class TableTypeRegistration {
+        private final Class<? extends AddressFamily> addressFamily;
+        private final Class<? extends SubsequentAddressFamily> subsequentAddressFamily;
+        private final Class<? extends AfiSafiType> afiSafiType;
+
+        private TableTypeRegistration(final Class<? extends AddressFamily> addressFamily,
+                                      final Class<? extends SubsequentAddressFamily> subsequentAddressFamily,
+                                      final Class<? extends AfiSafiType> afiSafiType) {
+            this.addressFamily = addressFamily;
+            this.subsequentAddressFamily = subsequentAddressFamily;
+            this.afiSafiType = afiSafiType;
+        }
+
+        static TableTypeRegistration tableType(@Nonnull final Class<? extends AddressFamily> addressFamily,
+                                                      @Nonnull final Class<? extends SubsequentAddressFamily> subsequentAddressFamily,
+                                                      @Nonnull final Class<? extends AfiSafiType> afiSafiType) {
+            return new TableTypeRegistration(addressFamily, subsequentAddressFamily, afiSafiType);
+        }
+
+        @Override
+        public String toString() {
+            return "TableTypeRegistration{" +
+                    "addressFamily=" + addressFamily +
+                    ", subsequentAddressFamily=" + subsequentAddressFamily +
+                    ", afiSafiType=" + afiSafiType +
+                    '}';
+        }
+    }
+
+}
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPExtensionConsumerContextProvider.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPExtensionConsumerContextProvider.java
new file mode 100644
index 000000000..14c3e9e1b
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPExtensionConsumerContextProvider.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.Inject;
+import io.fd.honeycomb.binding.init.ProviderTrait;
+import io.fd.honeycomb.data.init.ShutdownHandler;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionConsumerContext;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderActivator;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderContext;
+import org.opendaylight.protocol.bgp.parser.spi.pojo.SimpleBGPExtensionProviderContext;
+import org.opendaylight.protocol.bgp.parser.spi.pojo.SimpleBGPExtensionProviderContextActivator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Set;
+
+final class BGPExtensionConsumerContextProvider extends ProviderTrait<BGPExtensionConsumerContext> {
+    private static final Logger LOG = LoggerFactory.getLogger(BGPExtensionConsumerContextProvider.class);
+
+    @Inject
+    private Set<BGPExtensionProviderActivator> activators;
+
+    @Inject
+    private ShutdownHandler shutdownHandler;
+
+    @Override
+    protected BGPExtensionConsumerContext create() {
+        final BGPExtensionProviderContext ctx = new SimpleBGPExtensionProviderContext();
+        final SimpleBGPExtensionProviderContextActivator activator =
+            new SimpleBGPExtensionProviderContextActivator(ctx, new ArrayList<>(activators));
+        LOG.debug("Starting BGPExtensionConsumerContext with activators: {}", activators);
+        activator.start();
+        shutdownHandler.register("bgp-extension-context-activator", activator);
+        return ctx;
+    }
+}
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPTableTypeRegistryConsumerProvider.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPTableTypeRegistryConsumerProvider.java
new file mode 100644
index 000000000..24e592a27
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BGPTableTypeRegistryConsumerProvider.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.Inject;
+import io.fd.honeycomb.binding.init.ProviderTrait;
+import org.opendaylight.protocol.bgp.openconfig.spi.BGPTableTypeRegistryConsumer;
+import org.opendaylight.protocol.bgp.openconfig.spi.SimpleBGPTableTypeRegistryProvider;
+
+import java.util.Set;
+
+final class BGPTableTypeRegistryConsumerProvider extends ProviderTrait<BGPTableTypeRegistryConsumer> {
+    @Inject
+    private Set<BGPTableType> tableTypes;
+
+    @Override
+    protected BGPTableTypeRegistryConsumer create() {
+        final SimpleBGPTableTypeRegistryProvider registry = new SimpleBGPTableTypeRegistryProvider();
+        tableTypes.stream().forEach(tableType -> tableType.register(registry));
+        return registry;
+    }
+
+    interface BGPTableType {
+        void register(SimpleBGPTableTypeRegistryProvider registry);
+    }
+}
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BgpExtensionModule.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BgpExtensionModule.java
new file mode 100644
index 000000000..10d4398ed
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/BgpExtensionModule.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.Provider;
+import io.fd.honeycomb.translate.write.WriterFactory;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderActivator;
+import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionProviderActivator;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.multiprotocol.rev151009.bgp.common.afi.safi.list.AfiSafi;
+
+import java.util.Set;
+
+/**
+ * Interface to define all bindings that BGP extension module should expose
+ */
+public interface BgpExtensionModule {
+
+    /**
+     * RIB activator/s for module
+     */
+    Set<Class<? extends RIBExtensionProviderActivator>> getRibActivators();
+
+    /**
+     * Extension activator/s for module
+     */
+    Set<Class<? extends BGPExtensionProviderActivator>> getExtensionActivators();
+
+    /**
+     * Supported table types
+     */
+    Set<AbstractBgpExtensionModule.TableTypeRegistration> getTableTypes();
+
+    /**
+     * Supported afi's
+     */
+    Set<Class<? extends Provider<AfiSafi>>> getAfiSafiTypeProviders();
+
+    /**
+     * Returns {@code WriterFactory} that binds all nodes that extension is handling
+     */
+    Set<Class<? extends WriterFactory>> getApplicationRibWriters();
+
+    /**
+     * Any additional bindings that are needed
+     */
+    default void configureAlso() {
+        //NOOP - override to add additional configuration
+    }
+}
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/CommonBgpExtensionsModule.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/CommonBgpExtensionsModule.java
new file mode 100644
index 000000000..e5406dd44
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/CommonBgpExtensionsModule.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Singleton;
+import com.google.inject.multibindings.Multibinder;
+import org.opendaylight.protocol.bgp.parser.impl.BGPActivator;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionConsumerContext;
+import org.opendaylight.protocol.bgp.parser.spi.BGPExtensionProviderActivator;
+import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Registers BGP extensions provided by ODL implementation.
+ * TODO(HONEYCOMB-378): add support for flowspec (requires some special initialization)
+ */
+public final class CommonBgpExtensionsModule extends AbstractModule {
+    private static final Logger LOG = LoggerFactory.getLogger(CommonBgpExtensionsModule.class);
+
+    protected void configure() {
+        LOG.debug("Initializing CommonBgpExtensionsModule");
+        // This should be part of BgpModule, but that one is Private and Multibinders + private BASE_MODULES
+        // do not work together, that's why there's a dedicated module here
+        // https://github.com/google/guice/issues/906
+        bind(RIBExtensionConsumerContext.class).toProvider(RIBExtensionConsumerContextProvider.class).in(Singleton.class);
+        bind(BGPExtensionConsumerContext.class).toProvider(BGPExtensionConsumerContextProvider.class).in(Singleton.class);
+        Multibinder.newSetBinder(binder(), BGPExtensionProviderActivator.class).addBinding().to(BGPActivator.class);
+    }
+}
diff --git a/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/RIBExtensionConsumerContextProvider.java b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/RIBExtensionConsumerContextProvider.java
new file mode 100644
index 000000000..a8374ea67
--- /dev/null
+++ b/infra/northbound/bgp-extensions/extension-common/src/main/java/io/fd/honeycomb/northbound/bgp/extension/RIBExtensionConsumerContextProvider.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.northbound.bgp.extension;
+
+import com.google.inject.Inject;
+import io.fd.honeycomb.binding.init.ProviderTrait;
+import io.fd.honeycomb.data.init.ShutdownHandler;
+import org.opendaylight.protocol.bgp.rib.spi.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Set;
+
+public class RIBExtensionConsumerContextProvider extends ProviderTrait<RIBExtensionConsumerContext> {
+    private static final Logger LOG = LoggerFactory.getLogger(RIBExtensionConsumerContextProvider.class);
+    @Inject
+    private Set<RIBExtensionProviderActivator> activators;
+    @Inject
+    private ShutdownHandler shutdownHandler;
+
+    @Override
+    protected RIBExtensionConsumerContext create() {
+        final RIBExtensionProviderContext ctx = new SimpleRIBExtensionProviderContext();
+        final SimpleRIBExtensionProviderContextActivator activator =
+            new SimpleRIBExtensionProviderContextActivator(ctx, new ArrayList<>(activators));
+        LOG.debug("Starting RIBExtensionConsumerContext with activators: {}", activators);
+        activator.start();
+        shutdownHandler.register("rib-extension-consumer-context-activator", activator);
+        return ctx;
+    }
+}