HONEYCOMB-356: API implementation

RibWriter registers DataTreeChangeListener for given route type.
RouteWriter recevies create/update/delete notifications for single route
modifications in LocRib DS.

Change-Id: I4832abfb25aa189ecd3964febd6071f9a25117b2
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

3 files changed, 57 insertions, 0 deletions

diff --git a/infra/bgp-distribution/pom.xml b/infra/bgp-distribution/pom.xml
index c70d03017..62bc95752 100644
--- a/infra/bgp-distribution/pom.xml
+++ b/infra/bgp-distribution/pom.xml
@@ -57,6 +57,16 @@
             <artifactId>minimal-distribution</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>bgp-translate-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>bgp-translate-impl</artifactId>
+            <version>${project.version}</version>
+        </dependency>
 
         <!-- ODL-BGP -->
         <dependency>
diff --git a/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/BgpModule.java b/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/BgpModule.java
index efef5a71f..a26b5c158 100644
--- a/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/BgpModule.java
+++ b/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/BgpModule.java
@@ -25,6 +25,7 @@ import com.google.inject.name.Names;
 import io.fd.honeycomb.infra.distro.data.BindingDataBrokerProvider;
 import io.fd.honeycomb.infra.distro.data.DataStoreProvider;
 import io.fd.honeycomb.infra.distro.data.InmemoryDOMDataBrokerProvider;
+import io.fd.honeycomb.translate.bgp.RibWriter;
 import io.netty.channel.EventLoopGroup;
 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
@@ -61,6 +62,10 @@ public final class BgpModule extends PrivateModule {
         // Initialize BgpNeighbours
         bind(BgpNeighbors.class).toProvider(BgpNeighboursProvider.class).in(Singleton.class);
         expose(BgpNeighbors.class);
+
+        // Listens for local RIB modifications and passes routes to translation layer
+        bind(RibWriter.class).toProvider(LocRibWriterProvider.class).asEagerSingleton();
+        expose(RibWriter.class);
     }
 
     private void configureRIB() {
diff --git a/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/LocRibWriterProvider.java b/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/LocRibWriterProvider.java
new file mode 100644
index 000000000..1fc6b25ed
--- /dev/null
+++ b/infra/bgp-distribution/src/main/java/io/fd/honeycomb/infra/bgp/LocRibWriterProvider.java
@@ -0,0 +1,42 @@
+/*
+ * 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.infra.bgp;
+
+import com.google.inject.Inject;
+import com.google.inject.name.Named;
+import io.fd.honeycomb.bgp.translate.impl.LocRibWriter;
+import io.fd.honeycomb.infra.distro.ProviderTrait;
+import io.fd.honeycomb.translate.bgp.RouteWriterFactory;
+import java.util.HashSet;
+import java.util.Set;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+
+final class LocRibWriterProvider extends ProviderTrait<LocRibWriter> {
+
+    @Inject
+    @Named(BgpModule.HONEYCOMB_BGP)
+    private DataBroker bgpDataBroker;
+    @Inject(optional = true)
+    private Set<RouteWriterFactory> writerFactories = new HashSet<>();
+
+    @Override
+    protected LocRibWriter create() {
+        final LocRibWriter registry = new LocRibWriter(bgpDataBroker);
+        writerFactories.stream().forEach(factory -> factory.init(registry));
+        return registry;
+    }
+}