HONEYCOMB-9: Add configuration and wiring for readers and writers

Remove config module
Wrap vpp-japi in a config module

Change-Id: Iee1e0c653309bd3c1019323ce689dacf3ed995cd
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

35 files changed, 961 insertions, 310 deletions

diff --git a/v3po/artifacts/pom.xml b/v3po/artifacts/pom.xml
index 9240da571..909ca45ab 100644
--- a/v3po/artifacts/pom.xml
+++ b/v3po/artifacts/pom.xml
@@ -71,6 +71,11 @@
       </dependency>
       <dependency>
         <groupId>${project.groupId}</groupId>
+        <artifactId>vpp-japi-cfg</artifactId>
+        <version>${project.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>${project.groupId}</groupId>
         <artifactId>v3po2vpp</artifactId>
         <version>${project.version}</version>
       </dependency>
diff --git a/v3po/config/Readme.adoc b/v3po/config/Readme.adoc
deleted file mode 100644
index 35151195e..000000000
--- a/v3po/config/Readme.adoc
+++ /dev/null
@@ -1,10 +0,0 @@
-= Honeycomb. Translation layer configuration
-
-Defines ReaderRegistry and WriterRegistry for VPP.
-Data layer delegates actual reads and writes to these registers.
-Registries define root readers and writers for supported YANG models.
-
-
-
-
-
diff --git a/v3po/config/pom.xml b/v3po/config/pom.xml
deleted file mode 100644
index 910fc7daa..000000000
--- a/v3po/config/pom.xml
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<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>
-        <groupId>io.fd.honeycomb.common</groupId>
-        <artifactId>api-parent</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../common/api-parent</relativePath>
-    </parent>
-
-    <modelVersion>4.0.0</modelVersion>
-    <groupId>io.fd.honeycomb.v3po</groupId>
-    <artifactId>config</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
-    <packaging>bundle</packaging>
-
-    <dependencies>
-        <dependency>
-            <groupId>io.fd.honeycomb.v3po</groupId>
-            <artifactId>translate-impl</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>io.fd.honeycomb.v3po</groupId>
-            <artifactId>v3po2vpp</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-
-    </dependencies>
-</project>
\ No newline at end of file
diff --git a/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/ReaderRegistry.java b/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/ReaderRegistry.java
deleted file mode 100644
index 7ab2dd430..000000000
--- a/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/ReaderRegistry.java
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (c) 2016 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.v3po.config;
-
-import com.google.common.base.Optional;
-import com.google.common.collect.Multimap;
-import io.fd.honeycomb.v3po.translate.impl.read.CompositeChildReader;
-import io.fd.honeycomb.v3po.translate.impl.read.CompositeListReader;
-import io.fd.honeycomb.v3po.translate.impl.read.CompositeRootReader;
-import io.fd.honeycomb.v3po.translate.util.read.DelegatingReaderRegistry;
-import io.fd.honeycomb.v3po.translate.util.read.ReflexiveChildReaderCustomizer;
-import io.fd.honeycomb.v3po.translate.util.read.ReflexiveRootReaderCustomizer;
-import io.fd.honeycomb.v3po.translate.util.RWUtils;
-import io.fd.honeycomb.v3po.translate.read.ChildReader;
-import io.fd.honeycomb.v3po.translate.read.ReadContext;
-import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
-import io.fd.honeycomb.v3po.translate.read.Reader;
-import io.fd.honeycomb.v3po.translate.v3po.vppstate.BridgeDomainCustomizer;
-import io.fd.honeycomb.v3po.translate.v3po.vppstate.VersionCustomizer;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import javax.annotation.Nonnull;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppState;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppStateBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomains;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomainsBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.Version;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomain;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainKey;
-import org.opendaylight.yangtools.yang.binding.ChildOf;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.openvpp.vppjapi.vppApi;
-
-// TODO use some DI framework instead of singleton
-public class ReaderRegistry implements io.fd.honeycomb.v3po.translate.read.ReaderRegistry {
-
-    private static ReaderRegistry instance;
-
-    private final DelegatingReaderRegistry reader;
-
-    private ReaderRegistry(@Nonnull final vppApi vppApi) {
-        final CompositeRootReader<VppState, VppStateBuilder> vppStateReader = initVppStateReader(vppApi);
-        // TODO add more root readers
-        reader = new DelegatingReaderRegistry(Collections.<Reader<? extends DataObject>>singletonList(vppStateReader));
-    }
-
-    private static CompositeRootReader<VppState, VppStateBuilder> initVppStateReader(@Nonnull final vppApi vppApi) {
-
-        final ChildReader<Version> versionReader = new CompositeChildReader<>(
-                Version.class, new VersionCustomizer(vppApi));
-
-        final CompositeListReader<BridgeDomain, BridgeDomainKey, BridgeDomainBuilder>
-                bridgeDomainReader = new CompositeListReader<>(
-                BridgeDomain.class,
-                new BridgeDomainCustomizer(vppApi));
-
-        final ChildReader<BridgeDomains> bridgeDomainsReader = new CompositeChildReader<>(
-                BridgeDomains.class,
-                RWUtils.singletonChildReaderList(bridgeDomainReader),
-                new ReflexiveChildReaderCustomizer<>(BridgeDomainsBuilder.class));
-
-        final List<ChildReader<? extends ChildOf<VppState>>> childVppReaders = new ArrayList<>();
-        childVppReaders.add(versionReader);
-        childVppReaders.add(bridgeDomainsReader);
-
-        return new CompositeRootReader<>(
-                VppState.class,
-                childVppReaders,
-                RWUtils.<VppState>emptyAugReaderList(),
-                new ReflexiveRootReaderCustomizer<>(VppStateBuilder.class));
-    }
-
-    public static synchronized ReaderRegistry getInstance(@Nonnull final vppApi vppApi) {
-        if (instance == null) {
-            instance = new ReaderRegistry(vppApi);
-        }
-        return instance;
-    }
-
-    @Nonnull
-    @Override
-    public Multimap<InstanceIdentifier<? extends DataObject>, ? extends DataObject> readAll(
-        @Nonnull final ReadContext ctx) throws ReadFailedException {
-        return reader.readAll(ctx);
-    }
-
-    @Nonnull
-    @Override
-    public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id,
-                                               @Nonnull final ReadContext ctx) throws ReadFailedException {
-        return reader.read(id, ctx);
-    }
-
-    @Nonnull
-    @Override
-    public InstanceIdentifier<DataObject> getManagedDataObjectType() {
-        return reader.getManagedDataObjectType();
-    }
-}
diff --git a/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/WriterRegistry.java b/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/WriterRegistry.java
deleted file mode 100644
index 2d579c449..000000000
--- a/v3po/config/src/main/java/io/fd/honeycomb/v3po/config/WriterRegistry.java
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (c) 2016 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.v3po.config;
-
-import io.fd.honeycomb.v3po.translate.TranslationException;
-import io.fd.honeycomb.v3po.translate.util.RWUtils;
-import io.fd.honeycomb.v3po.translate.impl.write.CompositeChildWriter;
-import io.fd.honeycomb.v3po.translate.impl.write.CompositeListWriter;
-import io.fd.honeycomb.v3po.translate.impl.write.CompositeRootWriter;
-import io.fd.honeycomb.v3po.translate.util.write.DelegatingWriterRegistry;
-import io.fd.honeycomb.v3po.translate.util.write.NoopWriterCustomizer;
-import io.fd.honeycomb.v3po.translate.util.write.ReflexiveChildWriterCustomizer;
-import io.fd.honeycomb.v3po.translate.v3po.vpp.BridgeDomainCustomizer;
-import io.fd.honeycomb.v3po.translate.write.ChildWriter;
-import io.fd.honeycomb.v3po.translate.write.Writer;
-import io.fd.honeycomb.v3po.translate.write.WriteContext;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Vpp;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.BridgeDomains;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomainKey;
-import org.opendaylight.yangtools.yang.binding.ChildOf;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.openvpp.vppjapi.vppApi;
-
-// TODO use some DI framework instead of singleton
-public class WriterRegistry implements io.fd.honeycomb.v3po.translate.write.WriterRegistry {
-
-    private static WriterRegistry instance;
-
-    private final DelegatingWriterRegistry writer;
-
-    private WriterRegistry(@Nonnull final vppApi vppApi) {
-        final CompositeRootWriter<Vpp> vppWriter = initVppStateWriter(vppApi);
-        writer = new DelegatingWriterRegistry(Collections.<Writer<? extends DataObject>>singletonList(vppWriter));
-    }
-
-    private static CompositeRootWriter<Vpp> initVppStateWriter(@Nonnull final vppApi vppApi) {
-        final CompositeListWriter<BridgeDomain, BridgeDomainKey> bridgeDomainWriter = new CompositeListWriter<>(
-            BridgeDomain.class,
-            new BridgeDomainCustomizer(vppApi));
-
-        final ChildWriter<BridgeDomains> bridgeDomainsWriter = new CompositeChildWriter<>(
-            BridgeDomains.class,
-            RWUtils.singletonChildWriterList(bridgeDomainWriter),
-            new ReflexiveChildWriterCustomizer<BridgeDomains>());
-
-        final List<ChildWriter<? extends ChildOf<Vpp>>> childWriters = new ArrayList<>();
-        childWriters.add(bridgeDomainsWriter);
-
-        return new CompositeRootWriter<>(
-            Vpp.class,
-            childWriters,
-            new NoopWriterCustomizer<Vpp>());
-    }
-
-    public static synchronized WriterRegistry getInstance(@Nonnull final vppApi vppApi) {
-        if (instance == null) {
-            instance = new WriterRegistry(vppApi);
-        }
-        return instance;
-    }
-
-    @Nonnull
-    @Override
-    public InstanceIdentifier<DataObject> getManagedDataObjectType() {
-        return writer.getManagedDataObjectType();
-    }
-
-    @Override
-    public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id,
-                       @Nullable final DataObject dataBefore,
-                       @Nullable final DataObject data, @Nonnull final WriteContext ctx) throws TranslationException {
-        writer.update(id, dataBefore, data, ctx);
-    }
-
-    @Override
-    public void update(@Nonnull final Map<InstanceIdentifier<?>, DataObject> dataBefore,
-                       @Nonnull final Map<InstanceIdentifier<?>, DataObject> dataAfter,
-                       @Nonnull final WriteContext ctx)
-        throws TranslationException {
-        writer.update(dataBefore, dataAfter, ctx);
-    }
-}
diff --git a/v3po/features/pom.xml b/v3po/features/pom.xml
index ce4132552..0ff43204b 100644
--- a/v3po/features/pom.xml
+++ b/v3po/features/pom.xml
@@ -135,21 +135,28 @@
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
-      <artifactId>config</artifactId>
+      <artifactId>data-api</artifactId>
       <version>${project.version}</version>
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
-      <artifactId>data-api</artifactId>
+      <artifactId>data-impl</artifactId>
       <version>${project.version}</version>
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
-      <artifactId>data-impl</artifactId>
+      <artifactId>vpp-japi-cfg</artifactId>
       <version>${project.version}</version>
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
+      <artifactId>vpp-japi-cfg</artifactId>
+      <version>${project.version}</version>
+      <type>xml</type>
+      <classifier>config</classifier>
+    </dependency>
+    <dependency>
+      <groupId>${project.groupId}</groupId>
       <artifactId>translate-api</artifactId>
       <version>${project.version}</version>
     </dependency>
@@ -179,6 +186,13 @@
       <version>${project.version}</version>
     </dependency>
     <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>v3po2vpp</artifactId>
+      <version>${project.version}</version>
+      <type>xml</type>
+      <classifier>config</classifier>
+    </dependency>
+    <dependency>
       <groupId>io.fd.vpp</groupId>
       <artifactId>vppjapi</artifactId>
       <version>1.0.0-SNAPSHOT</version>
diff --git a/v3po/features/src/main/features/features.xml b/v3po/features/src/main/features/features.xml
index e6a8a64f3..a10e9fe68 100644
--- a/v3po/features/src/main/features/features.xml
+++ b/v3po/features/src/main/features/features.xml
@@ -39,14 +39,16 @@
     <bundle>mvn:io.fd.honeycomb.v3po/translate-spi/${project.version}</bundle>
     <bundle>mvn:io.fd.honeycomb.v3po/translate-utils/${project.version}</bundle>
     <bundle>mvn:io.fd.honeycomb.v3po/vpp-translate-utils/${project.version}</bundle>
-    <bundle>mvn:io.fd.honeycomb.v3po/config/${project.version}</bundle>
     <bundle>mvn:io.fd.honeycomb.v3po/data-api/${project.version}</bundle>
     <bundle>mvn:io.fd.honeycomb.v3po/data-impl/${project.version}</bundle>
     <bundle>mvn:io.fd.honeycomb.v3po/translate-impl/${project.version}</bundle>
-    <bundle>mvn:io.fd.honeycomb.v3po/v3po2vpp/${project.version}</bundle>
     <bundle>wrap:mvn:io.fd.vpp/vppjapi/1.0.0-SNAPSHOT</bundle>
+    <bundle>mvn:io.fd.honeycomb.v3po/vpp-japi-cfg/${project.version}</bundle>
+    <bundle>mvn:io.fd.honeycomb.v3po/v3po2vpp/${project.version}</bundle>
+    <configfile finalname="${configfile.directory}/vpp-japi.xml">mvn:io.fd.honeycomb.v3po/vpp-japi-cfg/${project.version}/xml/config</configfile>
     <configfile finalname="${configfile.directory}/v3po.xml">mvn:io.fd.honeycomb.v3po/v3po-impl/${project.version}/xml/config</configfile>
     <configfile finalname="${configfile.directory}/v3po-netconf.xml">mvn:io.fd.honeycomb.v3po/v3po-impl/${project.version}/xml/netconf</configfile>
+    <configfile finalname="${configfile.directory}/v3po2vpp.xml">mvn:io.fd.honeycomb.v3po/v3po2vpp/${project.version}/xml/config</configfile>
   </feature>
 
   <feature name='odl-v3po-rest' version='${project.version}' description='OpenDaylight :: v3po :: REST'>
diff --git a/v3po/impl/pom.xml b/v3po/impl/pom.xml
index be824ca79..ffa16aed2 100644
--- a/v3po/impl/pom.xml
+++ b/v3po/impl/pom.xml
@@ -46,11 +46,6 @@
     </dependency>
     <dependency>
       <groupId>${project.groupId}</groupId>
-      <artifactId>config</artifactId>
-      <version>${project.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>${project.groupId}</groupId>
       <artifactId>data-impl</artifactId>
       <version>${project.version}</version>
     </dependency>
diff --git a/v3po/impl/src/main/config/default-config.xml b/v3po/impl/src/main/config/default-config.xml
index 261cd3d6f..f4b75efc7 100644
--- a/v3po/impl/src/main/config/default-config.xml
+++ b/v3po/impl/src/main/config/default-config.xml
@@ -15,15 +15,26 @@
  limitations under the License.
 -->
 <snapshot>
-  <!--TODO update required caps-->
   <required-capabilities>
       <capability>urn:opendaylight:params:xml:ns:yang:v3po:impl?module=v3po-impl&amp;revision=2014-12-10</capability>
+      <capability>urn:honeycomb:params:xml:ns:yang:translate:utils?module=translate-utils&amp;revision=2016-04-06</capability>
+      <capability>urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg?module=vpp-japi-cfg&amp;revision=2016-04-06</capability>
       <capability>urn:opendaylight:params:xml:ns:yang:controller:md:sal:binding?module=opendaylight-md-sal-binding&amp;revision=2013-10-28</capability>
   </required-capabilities>
   <configuration>
 
     <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
       <modules xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+
+        <module>
+          <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:utils">prefix:delegating-reader-registry</type>
+          <name>read-registry</name>
+        </module>
+        <module>
+          <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:utils">prefix:delegating-writer-registry</type>
+          <name>write-registry</name>
+        </module>
+
         <module>
           <type xmlns:prefix="urn:opendaylight:params:xml:ns:yang:v3po:impl">prefix:v3po</type>
           <name>v3po-default</name>
@@ -35,18 +46,43 @@
             <type xmlns:prefix="urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom">prefix:dom-broker-osgi-registry</type>
             <name>dom-broker</name>
           </dom-broker>
+          <vpp-japi>
+            <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg">prefix:vpp-japi</type>
+            <name>vpp-japi</name>
+          </vpp-japi>
+          <reader-registry>
+            <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-reader-registry</type>
+            <name>read-registry</name>
+          </reader-registry>
+          <writer-registry>
+            <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-writer-registry</type>
+            <name>write-registry</name>
+          </writer-registry>
         </module>
       </modules>
 
       <services xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
         <service>
+          <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-reader-registry</type>
+          <instance>
+            <name>read-registry</name>
+            <provider>/modules/module[type='delegating-reader-registry'][name='read-registry']</provider>
+          </instance>
+        </service>
+        <service>
+          <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-writer-registry</type>
+          <instance>
+            <name>write-registry</name>
+            <provider>/modules/module[type='delegating-writer-registry'][name='write-registry']</provider>
+          </instance>
+        </service>
+        <service>
           <type xmlns:dom="urn:opendaylight:params:xml:ns:yang:controller:md:sal:dom">
             dom:dom-broker-osgi-registry
           </type>
           <instance>
             <name>vpp-dom-broker</name>
-            <provider>/modules/module[type='v3po'][name='v3po-default']
-            </provider>
+            <provider>/modules/module[type='v3po'][name='v3po-default']</provider>
           </instance>
         </service>
       </services>
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/V3poProvider.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/V3poProvider.java
index a97909190..973d34585 100644
--- a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/V3poProvider.java
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/V3poProvider.java
@@ -20,9 +20,8 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.google.common.util.concurrent.CheckedFuture;
 import com.google.common.util.concurrent.Futures;
-import io.fd.honeycomb.v3po.config.ReaderRegistry;
-import io.fd.honeycomb.v3po.config.WriterRegistry;
-import java.io.IOException;
+import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -72,11 +71,18 @@ public class V3poProvider implements BindingAwareProvider, AutoCloseable, Broker
     private VppIetfInterfaceListener vppInterfaceListener;
     private VppBridgeDomainListener vppBridgeDomainListener;
     private vppApi api;
+    private ReaderRegistry readerRegistry;
+    private WriterRegistry writerRegistry;
     private DataBroker db;
     VppPollOperDataImpl vppPollOperData;
     private VppDataBrokerInitializationProvider vppDataBrokerInitializationProvider;
 
-    public V3poProvider(@Nonnull final Broker domBroker) {
+    public V3poProvider(@Nonnull final Broker domBroker, final vppApi vppJapiDependency,
+                        final ReaderRegistry readerRegistry,
+                        final WriterRegistry writerRegistry) {
+        api = vppJapiDependency;
+        this.readerRegistry = readerRegistry;
+        this.writerRegistry = writerRegistry;
         this.domBroker = Preconditions.checkNotNull(domBroker, "domBroker should not be null");
     }
 
@@ -98,6 +104,7 @@ public class V3poProvider implements BindingAwareProvider, AutoCloseable, Broker
         transaction = db.newWriteOnlyTransaction();
 
         // FIXME this is minimal and we need to sync the entire configuration
+        // FIXME remove from here and make this specific for interface customizers
         syncInterfaces(transaction, api);
 
         future = transaction.submit();
@@ -177,15 +184,6 @@ public class V3poProvider implements BindingAwareProvider, AutoCloseable, Broker
     public void onSessionInitiated(final ProviderContext session) {
         LOG.info("VPP-INFO: V3poProvider Session Initiated");
 
-        try {
-	    api = new vppApi("v3poODL");
-        } catch (IOException e) {
-            LOG.error("VPP-ERROR: VPP api client connection failed", e);
-            return;
-        }
-
-        LOG.info("VPP-INFO: VPP api client connection established");
-
         db = session.getSALService(DataBroker.class);
         initializeVppConfig();
         initVppOperational();
@@ -195,9 +193,6 @@ public class V3poProvider implements BindingAwareProvider, AutoCloseable, Broker
                                                    vppPollOperData);
         startOperationalUpdateTimer();
 
-        final ReaderRegistry readerRegistry = ReaderRegistry.getInstance(api);
-        final WriterRegistry writerRegistry = WriterRegistry.getInstance(api);
-
         // TODO make configurable:
         vppDataBrokerInitializationProvider = new VppDataBrokerInitializationProvider(db, readerRegistry, writerRegistry);
         // TODO pull the registration into Module
@@ -210,9 +205,6 @@ public class V3poProvider implements BindingAwareProvider, AutoCloseable, Broker
         if (v3poService != null) {
             v3poService.close();
         }
-        if (api != null) {
-            api.close();
-        }
         if (vppDataBrokerInitializationProvider != null) {
             vppDataBrokerInitializationProvider.close();
         }
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/VppDataBrokerInitializationProvider.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/VppDataBrokerInitializationProvider.java
index 0939fe239..58195ba3f 100644
--- a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/VppDataBrokerInitializationProvider.java
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/VppDataBrokerInitializationProvider.java
@@ -23,13 +23,13 @@ import com.google.common.base.Preconditions;
 import com.google.common.util.concurrent.AsyncFunction;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
-import io.fd.honeycomb.v3po.config.WriterRegistry;
 import io.fd.honeycomb.v3po.data.ModifiableDataTree;
 import io.fd.honeycomb.v3po.data.ReadableDataTree;
 import io.fd.honeycomb.v3po.data.impl.ConfigDataTree;
 import io.fd.honeycomb.v3po.data.impl.OperationalDataTree;
 import io.fd.honeycomb.v3po.data.impl.DataBroker;
 import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
 import java.util.Collection;
 import java.util.Collections;
 import javassist.ClassPool;
@@ -136,7 +136,8 @@ public final class VppDataBrokerInitializationProvider implements Provider, Auto
 
         createMountPointPlaceholder();
 
-        initialVppConfigSynchronization(broker);
+        // TODO initial sync has to go out of here
+//        initialVppConfigSynchronization(broker);
     }
 
     @Override
@@ -272,6 +273,7 @@ public final class VppDataBrokerInitializationProvider implements Provider, Auto
         final WriteTransaction rwTx = bindingBroker.newWriteOnlyTransaction();
         // does not fail if data is not present:
         rwTx.delete(LogicalDatastoreType.CONFIGURATION, mountPointPath);
+        rwTx.delete(LogicalDatastoreType.OPERATIONAL, mountPointPath);
         try {
             rwTx.submit().checkedGet();
         } catch (TransactionCommitFailedException e) {
diff --git a/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java b/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
index 390545563..3b77418ad 100644
--- a/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
+++ b/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
@@ -17,6 +17,8 @@
 package org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.impl.rev141210;
 
 import io.fd.honeycomb.v3po.impl.V3poProvider;
+import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
 import java.util.Collection;
 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
@@ -54,9 +56,12 @@ public class V3poModule extends
 
     @Override
     public java.lang.AutoCloseable createInstance() {
+        final ReaderRegistry readerRegistry = getReaderRegistryDependency();
+        final WriterRegistry writerRegistry = getWriterRegistryDependency();
+
         final Broker domBroker = getDomBrokerDependency();
         domBroker.registerProvider(new InitializationProvider());
-        final V3poProvider provider = new V3poProvider(domBroker);
+        final V3poProvider provider = new V3poProvider(domBroker, getVppJapiDependency(), readerRegistry, writerRegistry);
         getBrokerDependency().registerProvider(provider);
         return provider;
     }
diff --git a/v3po/impl/src/main/yang/v3po-impl.yang b/v3po/impl/src/main/yang/v3po-impl.yang
index 12f9d6f13..32696125b 100644
--- a/v3po/impl/src/main/yang/v3po-impl.yang
+++ b/v3po/impl/src/main/yang/v3po-impl.yang
@@ -6,6 +6,8 @@ module v3po-impl {
     import config { prefix config; revision-date 2013-04-05; }
     import opendaylight-md-sal-binding { prefix md-sal-binding; revision-date 2013-10-28;}
     import opendaylight-md-sal-dom {prefix dom;}
+    import vpp-japi-cfg { prefix vjc; revision-date 2016-04-06; }
+    import translate-api { prefix tapi; revision-date 2016-04-06; }
 
     description
         "Service definition for v3po project";
@@ -41,6 +43,33 @@ module v3po-impl {
                     }
                 }
             }
+
+            container vpp-japi {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity vjc:vpp-japi;
+                    }
+                }
+            }
+
+            container reader-registry {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity tapi:honeycomb-reader-registry;
+                    }
+                }
+            }
+
+            container writer-registry {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity tapi:honeycomb-writer-registry;
+                    }
+                }
+            }
         }
     }
 
diff --git a/v3po/impl/src/test/java/io/fd/honeycomb/v3po/impl/data/VppDataBrokerInitializationProviderTest.java b/v3po/impl/src/test/java/io/fd/honeycomb/v3po/impl/data/VppDataBrokerInitializationProviderTest.java
index 770ca7068..d8628f2bf 100644
--- a/v3po/impl/src/test/java/io/fd/honeycomb/v3po/impl/data/VppDataBrokerInitializationProviderTest.java
+++ b/v3po/impl/src/test/java/io/fd/honeycomb/v3po/impl/data/VppDataBrokerInitializationProviderTest.java
@@ -26,9 +26,9 @@ import static org.mockito.Mockito.verify;
 import static org.mockito.MockitoAnnotations.initMocks;
 
 import com.google.common.util.concurrent.CheckedFuture;
-import io.fd.honeycomb.v3po.config.WriterRegistry;
 import io.fd.honeycomb.v3po.impl.VppDataBrokerInitializationProvider;
 import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mock;
diff --git a/v3po/pom.xml b/v3po/pom.xml
index 7ec5d708a..050cf5b5a 100644
--- a/v3po/pom.xml
+++ b/v3po/pom.xml
@@ -33,7 +33,6 @@
   </prerequisites>
   <modules>
     <module>api</module>
-    <module>config</module>
     <module>data-api</module>
     <module>data-impl</module>
     <module>translate-spi</module>
@@ -41,6 +40,7 @@
     <module>translate-impl</module>
     <module>translate-utils</module>
     <module>vpp-translate-utils</module>
+    <module>vpp-japi-cfg</module>
     <module>v3po2vpp</module>
     <module>impl</module>
     <module>karaf</module>
diff --git a/v3po/translate-api/pom.xml b/v3po/translate-api/pom.xml
index 42501e752..4323e7f37 100644
--- a/v3po/translate-api/pom.xml
+++ b/v3po/translate-api/pom.xml
@@ -17,7 +17,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>io.fd.honeycomb.common</groupId>
-        <artifactId>api-parent</artifactId>
+        <artifactId>impl-parent</artifactId>
         <version>1.0.0-SNAPSHOT</version>
         <relativePath>../../common/api-parent</relativePath>
     </parent>
diff --git a/v3po/translate-api/src/main/yang/translate-api.yang b/v3po/translate-api/src/main/yang/translate-api.yang
new file mode 100644
index 000000000..28d969378
--- /dev/null
+++ b/v3po/translate-api/src/main/yang/translate-api.yang
@@ -0,0 +1,37 @@
+module translate-api {
+    yang-version 1;
+    namespace "urn:honeycomb:params:xml:ns:yang:translate:api";
+    prefix "tapi";
+
+    import config { prefix config; revision-date 2013-04-05; }
+
+    description
+        "This module contains the base YANG definitions for
+         readers/writers plugged into a honeycomb";
+
+    revision "2016-04-06" {
+        description
+            "Initial revision.";
+    }
+
+    identity honeycomb-reader {
+        base "config:service-type";
+        config:java-class io.fd.honeycomb.v3po.translate.read.Reader;
+    }
+
+    identity honeycomb-reader-registry {
+        base "config:service-type";
+        config:java-class io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+    }
+
+    identity honeycomb-writer {
+        base "config:service-type";
+        config:java-class io.fd.honeycomb.v3po.translate.write.Writer;
+    }
+
+    identity honeycomb-writer-registry {
+        base "config:service-type";
+        config:java-class io.fd.honeycomb.v3po.translate.write.WriterRegistry;
+    }
+
+}
\ No newline at end of file
diff --git a/v3po/translate-utils/pom.xml b/v3po/translate-utils/pom.xml
index d547cb483..346757cc2 100644
--- a/v3po/translate-utils/pom.xml
+++ b/v3po/translate-utils/pom.xml
@@ -17,9 +17,9 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>io.fd.honeycomb.common</groupId>
-        <artifactId>api-parent</artifactId>
+        <artifactId>impl-parent</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../common/api-parent</relativePath>
+        <relativePath>../../common/impl-parent</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModule.java b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModule.java
new file mode 100644
index 000000000..0eb5062d5
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModule.java
@@ -0,0 +1,80 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406;
+
+import com.google.common.base.Function;
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Multimap;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.read.Reader;
+import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import io.fd.honeycomb.v3po.translate.util.read.DelegatingReaderRegistry;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class DelegatingReaderRegistryModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.AbstractDelegatingReaderRegistryModule {
+    public DelegatingReaderRegistryModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public DelegatingReaderRegistryModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.DelegatingReaderRegistryModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        final List<Reader<? extends DataObject>> rootReadersDependency = Lists.transform(getRootReadersDependency(),
+            new Function<Reader, Reader<? extends DataObject>>() {
+
+                @SuppressWarnings("unchecked")
+                @Override
+                public Reader<? extends DataObject> apply(final Reader input) {
+                    return input;
+                }
+            });
+        return new CloseableReaderRegistry(new DelegatingReaderRegistry(rootReadersDependency));
+    }
+
+    // TODO move to translate-utils
+    private static final class CloseableReaderRegistry implements ReaderRegistry, AutoCloseable {
+        private final DelegatingReaderRegistry delegatingReaderRegistry;
+
+        CloseableReaderRegistry(
+            final DelegatingReaderRegistry delegatingReaderRegistry) {
+            this.delegatingReaderRegistry = delegatingReaderRegistry;
+        }
+
+        @Override
+        @Nonnull
+        public Multimap<InstanceIdentifier<? extends DataObject>, ? extends DataObject> readAll(
+            @Nonnull final ReadContext ctx) throws ReadFailedException {
+            return delegatingReaderRegistry.readAll(ctx);
+        }
+
+        @Nonnull
+        @Override
+        public Optional<? extends DataObject> read(
+            @Nonnull final InstanceIdentifier<? extends DataObject> id,
+            @Nonnull final ReadContext ctx) throws ReadFailedException {
+            return delegatingReaderRegistry.read(id, ctx);
+        }
+
+        @Nonnull
+        @Override
+        public InstanceIdentifier<DataObject> getManagedDataObjectType() {
+            return delegatingReaderRegistry.getManagedDataObjectType();
+        }
+
+        @Override
+        public void close() throws Exception {
+            // NOOP
+        }
+    }
+}
diff --git a/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModuleFactory.java b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModuleFactory.java
new file mode 100644
index 000000000..214ab0f90
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingReaderRegistryModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: translate-utils yang module local name: delegating-reader-registry
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Apr 06 12:32:43 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406;
+public class DelegatingReaderRegistryModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.AbstractDelegatingReaderRegistryModuleFactory {
+
+}
diff --git a/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModule.java b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModule.java
new file mode 100644
index 000000000..a629a294f
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModule.java
@@ -0,0 +1,82 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406;
+
+import com.google.common.base.Function;
+import com.google.common.collect.Lists;
+import io.fd.honeycomb.v3po.translate.TranslationException;
+import io.fd.honeycomb.v3po.translate.util.write.DelegatingWriterRegistry;
+import io.fd.honeycomb.v3po.translate.write.WriteContext;
+import io.fd.honeycomb.v3po.translate.write.Writer;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class DelegatingWriterRegistryModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.AbstractDelegatingWriterRegistryModule {
+    public DelegatingWriterRegistryModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public DelegatingWriterRegistryModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.DelegatingWriterRegistryModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        final List<Writer<? extends DataObject>> rootReadersDependency = Lists.transform(getRootWritersDependency(),
+            new Function<Writer, Writer<? extends DataObject>>() {
+
+                @SuppressWarnings("unchecked")
+                @Override
+                public Writer<? extends DataObject> apply(final Writer input) {
+                    return input;
+                }
+            });
+        return new CloseableWriterRegistry(new DelegatingWriterRegistry(rootReadersDependency));
+    }
+
+    // TODO move to translate-utils
+    private static final class CloseableWriterRegistry implements WriterRegistry, AutoCloseable {
+        private final DelegatingWriterRegistry delegatingWriterRegistry;
+
+        CloseableWriterRegistry(
+            final DelegatingWriterRegistry delegatingWriterRegistry) {
+            this.delegatingWriterRegistry = delegatingWriterRegistry;
+        }
+
+        @Override
+        public void update(
+            @Nonnull final Map<InstanceIdentifier<?>, DataObject> nodesBefore,
+            @Nonnull final Map<InstanceIdentifier<?>, DataObject> nodesAfter,
+            @Nonnull final WriteContext ctx) throws TranslationException {
+            delegatingWriterRegistry.update(nodesBefore, nodesAfter, ctx);
+        }
+
+        @Override
+        public void update(
+            @Nonnull final InstanceIdentifier<? extends DataObject> id,
+            @Nullable final DataObject dataBefore, @Nullable final DataObject dataAfter,
+            @Nonnull final WriteContext ctx) throws TranslationException {
+            delegatingWriterRegistry.update(id, dataBefore, dataAfter, ctx);
+        }
+
+        @Nonnull
+        @Override
+        public InstanceIdentifier<DataObject> getManagedDataObjectType() {
+            return delegatingWriterRegistry.getManagedDataObjectType();
+        }
+
+        @Override
+        public void close() throws Exception {
+            // NOOP
+        }
+    }
+
+}
diff --git a/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModuleFactory.java b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModuleFactory.java
new file mode 100644
index 000000000..ab3b820d3
--- /dev/null
+++ b/v3po/translate-utils/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/translate/utils/rev160406/DelegatingWriterRegistryModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: translate-utils yang module local name: delegating-writer-registry
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Apr 06 16:32:08 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406;
+public class DelegatingWriterRegistryModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.translate.utils.rev160406.AbstractDelegatingWriterRegistryModuleFactory {
+
+}
diff --git a/v3po/translate-utils/src/main/yang/translate-utils.yang b/v3po/translate-utils/src/main/yang/translate-utils.yang
new file mode 100644
index 000000000..093e1725b
--- /dev/null
+++ b/v3po/translate-utils/src/main/yang/translate-utils.yang
@@ -0,0 +1,61 @@
+module translate-utils {
+    yang-version 1;
+    namespace "urn:honeycomb:params:xml:ns:yang:translate:utils";
+    prefix "tutils";
+
+    import config { prefix config; revision-date 2013-04-05; }
+    import translate-api { prefix tapi; revision-date 2016-04-06; }
+
+    description
+        "This module contains translation layer utilities";
+
+    revision "2016-04-06" {
+        description
+            "Initial revision.";
+    }
+
+    identity delegating-reader-registry {
+        base config:module-type;
+        config:provided-service tapi:honeycomb-reader-registry;
+        config:java-name-prefix DelegatingReaderRegistry;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case delegating-reader-registry {
+            when "/config:modules/config:module/config:type = 'delegating-reader-registry'";
+
+                list root-readers {
+                    uses config:service-ref {
+                        refine type {
+                            mandatory true;
+                            config:required-identity tapi:honeycomb-reader;
+                        }
+                    }
+                }
+
+        }
+    }
+
+    identity delegating-writer-registry {
+        base config:module-type;
+        config:provided-service tapi:honeycomb-writer-registry;
+        config:java-name-prefix DelegatingWriterRegistry;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case delegating-writer-registry {
+            when "/config:modules/config:module/config:type = 'delegating-writer-registry'";
+
+                list root-writers {
+                    uses config:service-ref {
+                        refine type {
+                            mandatory true;
+                            config:required-identity tapi:honeycomb-writer;
+                        }
+                    }
+                }
+
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/v3po/v3po2vpp/pom.xml b/v3po/v3po2vpp/pom.xml
index e14730594..6b57ca201 100644
--- a/v3po/v3po2vpp/pom.xml
+++ b/v3po/v3po2vpp/pom.xml
@@ -17,9 +17,9 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>io.fd.honeycomb.common</groupId>
-        <artifactId>api-parent</artifactId>
+        <artifactId>impl-parent</artifactId>
         <version>1.0.0-SNAPSHOT</version>
-        <relativePath>../../common/api-parent</relativePath>
+        <relativePath>../../common/impl-parent</relativePath>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
@@ -50,6 +50,16 @@
             <version>${project.version}</version>
         </dependency>
         <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>translate-impl</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>vpp-japi-cfg</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
             <groupId>io.fd.vpp</groupId>
             <artifactId>vppjapi</artifactId>
             <version>1.0.0-SNAPSHOT</version>
@@ -57,12 +67,6 @@
 
         <!-- Testing Dependencies -->
         <dependency>
-            <groupId>${project.groupId}</groupId>
-            <artifactId>translate-impl</artifactId>
-            <version>${project.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <scope>test</scope>
@@ -93,5 +97,4 @@
         </dependency>
 
     </dependencies>
-
 </project>
diff --git a/v3po/v3po2vpp/src/main/config/default-config.xml b/v3po/v3po2vpp/src/main/config/default-config.xml
new file mode 100644
index 000000000..d76b0d6d3
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/config/default-config.xml
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2016 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.
+  -->
+
+<!-- vi: set et smarttab sw=4 tabstop=4: -->
+
+<snapshot>
+    <required-capabilities>
+        <capability>urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg?module=vpp-japi-cfg&amp;revision=2016-04-06</capability>
+        <capability>urn:honeycomb:params:xml:ns:yang:v3po2vpp?module=v3po2vpp&amp;revision=2016-04-06</capability>
+    </required-capabilities>
+    <configuration>
+
+        <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
+            <modules xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:v3po2vpp">prefix:vpp-state-honeycomb-reader</type>
+                    <name>vpp-state-honeycomb-reader</name>
+                    <vpp-japi>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg">prefix:vpp-japi</type>
+                        <name>vpp-japi</name>
+                    </vpp-japi>
+                </module>
+
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:v3po2vpp">prefix:vpp-honeycomb-writer</type>
+                    <name>vpp-honeycomb-writer</name>
+                    <vpp-japi-writer>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg">prefix:vpp-japi</type>
+                        <name>vpp-japi</name>
+                    </vpp-japi-writer>
+                </module>
+
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:utils">prefix:delegating-reader-registry</type>
+                    <name>read-registry</name>
+                    <root-readers>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-reader</type>
+                        <name>vpp-state-honeycomb-reader</name>
+                    </root-readers>
+                </module>
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:utils">prefix:delegating-writer-registry</type>
+                    <name>write-registry</name>
+                    <root-writers>
+                        <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-writer</type>
+                        <name>vpp-honeycomb-writer</name>
+                    </root-writers>
+                </module>
+            </modules>
+            <services xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+                <service>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-reader</type>
+                    <instance>
+                        <name>vpp-state-honeycomb-reader</name>
+                        <provider>/modules/module[type='vpp-state-honeycomb-reader'][name='vpp-state-honeycomb-reader']
+                        </provider>
+                    </instance>
+                </service>
+                <service>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:translate:api">prefix:honeycomb-writer</type>
+                    <instance>
+                        <name>vpp-honeycomb-writer</name>
+                        <provider>/modules/module[type='vpp-honeycomb-writer'][name='vpp-honeycomb-writer']
+                        </provider>
+                    </instance>
+                </service>
+            </services>
+        </data>
+    </configuration>
+</snapshot>
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModule.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModule.java
new file mode 100644
index 000000000..5694bc139
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModule.java
@@ -0,0 +1,96 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+
+import io.fd.honeycomb.v3po.translate.TranslationException;
+import io.fd.honeycomb.v3po.translate.impl.write.CompositeChildWriter;
+import io.fd.honeycomb.v3po.translate.impl.write.CompositeListWriter;
+import io.fd.honeycomb.v3po.translate.impl.write.CompositeRootWriter;
+import io.fd.honeycomb.v3po.translate.util.RWUtils;
+import io.fd.honeycomb.v3po.translate.util.write.NoopWriterCustomizer;
+import io.fd.honeycomb.v3po.translate.util.write.ReflexiveChildWriterCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.vpp.BridgeDomainCustomizer;
+import io.fd.honeycomb.v3po.translate.write.ChildWriter;
+import io.fd.honeycomb.v3po.translate.write.WriteContext;
+import io.fd.honeycomb.v3po.translate.write.Writer;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Vpp;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.BridgeDomains;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomainKey;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class VppHoneycombWriterModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppHoneycombWriterModule {
+    public VppHoneycombWriterModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public VppHoneycombWriterModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.VppHoneycombWriterModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        final CompositeListWriter<BridgeDomain, BridgeDomainKey> bridgeDomainWriter = new CompositeListWriter<>(
+            BridgeDomain.class,
+            new BridgeDomainCustomizer(getVppJapiWriterDependency()));
+
+        final ChildWriter<BridgeDomains> bridgeDomainsReader = new CompositeChildWriter<>(
+            BridgeDomains.class,
+            RWUtils.singletonChildWriterList(bridgeDomainWriter),
+            new ReflexiveChildWriterCustomizer<BridgeDomains>());
+
+        final List<ChildWriter<? extends ChildOf<Vpp>>> childWriters = new ArrayList<>();
+        childWriters.add(bridgeDomainsReader);
+
+        return new CloseableWriter(new CompositeRootWriter<>(
+            Vpp.class,
+            childWriters,
+            new NoopWriterCustomizer<Vpp>()));
+    }
+
+    // TODO move to translate-utils
+    private static final class CloseableWriter implements Writer<Vpp>, AutoCloseable {
+
+        private CompositeRootWriter<Vpp> vppCompositeRootWriter;
+
+        public CloseableWriter(
+            final CompositeRootWriter<Vpp> vppCompositeRootWriter) {
+            this.vppCompositeRootWriter = vppCompositeRootWriter;
+        }
+
+        @Override
+        public void update(
+            @Nonnull final InstanceIdentifier<? extends DataObject> id,
+            @Nullable final DataObject dataBefore,
+            @Nullable final DataObject dataAfter,
+            @Nonnull final WriteContext ctx) throws TranslationException {
+            vppCompositeRootWriter.update(id, dataBefore, dataAfter, ctx);
+        }
+
+        @Nonnull
+        @Override
+        public InstanceIdentifier<Vpp> getManagedDataObjectType() {
+            return vppCompositeRootWriter.getManagedDataObjectType();
+        }
+
+        @Override
+        public String toString() {
+            return vppCompositeRootWriter.toString();
+        }
+
+        @Override
+        public void close() throws Exception {
+
+        }
+    }
+
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModuleFactory.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModuleFactory.java
new file mode 100644
index 000000000..c350286b8
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppHoneycombWriterModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: v3po2vpp yang module local name: vpp-honeycomb-writer
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Apr 06 11:40:09 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+public class VppHoneycombWriterModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppHoneycombWriterModuleFactory {
+
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModule.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModule.java
new file mode 100644
index 000000000..8da7dad1c
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModule.java
@@ -0,0 +1,104 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.v3po.translate.impl.read.CompositeChildReader;
+import io.fd.honeycomb.v3po.translate.impl.read.CompositeListReader;
+import io.fd.honeycomb.v3po.translate.impl.read.CompositeRootReader;
+import io.fd.honeycomb.v3po.translate.read.ChildReader;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.read.Reader;
+import io.fd.honeycomb.v3po.translate.util.RWUtils;
+import io.fd.honeycomb.v3po.translate.util.read.ReflexiveChildReaderCustomizer;
+import io.fd.honeycomb.v3po.translate.util.read.ReflexiveRootReaderCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.vppstate.BridgeDomainCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.vppstate.VersionCustomizer;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppState;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppStateBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomains;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomainsBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.Version;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomain;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainKey;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.vppjapi.vppApi;
+
+public class VppStateHoneycombReaderModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppStateHoneycombReaderModule {
+    public VppStateHoneycombReaderModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public VppStateHoneycombReaderModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.VppStateHoneycombReaderModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        final vppApi vppApi = getVppJapiDependency();
+
+        final ChildReader<Version> versionReader = new CompositeChildReader<>(Version.class, new VersionCustomizer(vppApi));
+
+        final CompositeListReader<BridgeDomain, BridgeDomainKey, BridgeDomainBuilder> bridgeDomainReader =
+            new CompositeListReader<>(BridgeDomain.class, new BridgeDomainCustomizer(vppApi));
+
+        final ChildReader<BridgeDomains> bridgeDomainsReader = new CompositeChildReader<>(
+            BridgeDomains.class,
+            RWUtils.singletonChildReaderList(bridgeDomainReader),
+            new ReflexiveChildReaderCustomizer<>(BridgeDomainsBuilder.class));
+
+        final List<ChildReader<? extends ChildOf<VppState>>> childVppReaders = new ArrayList<>();
+        childVppReaders.add(versionReader);
+        childVppReaders.add(bridgeDomainsReader);
+
+        return new CloseableReader(new CompositeRootReader<>(
+            VppState.class,
+            childVppReaders,
+            RWUtils.<VppState>emptyAugReaderList(),
+            new ReflexiveRootReaderCustomizer<>(VppStateBuilder.class)));
+    }
+
+    // TODO move to utils
+    private static final class CloseableReader implements Reader<VppState>, AutoCloseable {
+
+        private CompositeRootReader<VppState, VppStateBuilder> vppStateVppStateBuilderCompositeRootReader;
+
+        public CloseableReader(
+            final CompositeRootReader<VppState, VppStateBuilder> vppStateVppStateBuilderCompositeRootReader) {
+            this.vppStateVppStateBuilderCompositeRootReader = vppStateVppStateBuilderCompositeRootReader;
+        }
+
+        @Nonnull
+        @Override
+        public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+                                                   @Nonnull final ReadContext ctx) throws ReadFailedException {
+            return vppStateVppStateBuilderCompositeRootReader.read(id, ctx);
+        }
+
+        @Nonnull
+        @Override
+        public InstanceIdentifier<VppState> getManagedDataObjectType() {
+            return vppStateVppStateBuilderCompositeRootReader.getManagedDataObjectType();
+        }
+
+        @Override
+        public String toString() {
+            return vppStateVppStateBuilderCompositeRootReader.toString();
+        }
+
+        @Override
+        public void close() throws Exception {
+            //NOOP
+        }
+    }
+}
diff --git a/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModuleFactory.java b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModuleFactory.java
new file mode 100644
index 000000000..e9e1c948b
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/v3po2vpp/rev160406/VppStateHoneycombReaderModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: v3po2vpp yang module local name: vpp-state-honeycomb-reader
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Apr 06 11:40:09 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
+public class VppStateHoneycombReaderModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppStateHoneycombReaderModuleFactory {
+
+}
diff --git a/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang b/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang
new file mode 100644
index 000000000..a52a05fec
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/yang/v3po2vpp.yang
@@ -0,0 +1,60 @@
+module v3po2vpp {
+    yang-version 1;
+    namespace "urn:honeycomb:params:xml:ns:yang:v3po2vpp";
+    prefix "v3po2vpp";
+
+    import config { prefix config; revision-date 2013-04-05; }
+    import translate-api { prefix tapi; revision-date 2016-04-06; }
+    import vpp-japi-cfg { prefix vjc; revision-date 2016-04-06; }
+
+    description
+        "This module contains reads and writers for v3po yang model";
+
+    revision "2016-04-06" {
+        description
+            "Initial revision.";
+    }
+
+    identity vpp-state-honeycomb-reader {
+        base config:module-type;
+        config:provided-service tapi:honeycomb-reader;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case vpp-state-honeycomb-reader {
+            when "/config:modules/config:module/config:type = 'vpp-state-honeycomb-reader'";
+
+            container vpp-japi {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity vjc:vpp-japi;
+                    }
+                }
+            }
+
+        }
+    }
+
+    identity vpp-honeycomb-writer {
+        base config:module-type;
+        config:provided-service tapi:honeycomb-writer;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case vpp-honeycomb-writer {
+            when "/config:modules/config:module/config:type = 'vpp-honeycomb-writer'";
+
+            container vpp-japi-writer {
+                uses config:service-ref {
+                    refine type {
+                        mandatory true;
+                        config:required-identity vjc:vpp-japi;
+                    }
+                }
+            }
+
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/v3po/vpp-japi-cfg/pom.xml b/v3po/vpp-japi-cfg/pom.xml
new file mode 100644
index 000000000..3e3424acc
--- /dev/null
+++ b/v3po/vpp-japi-cfg/pom.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (c) 2015 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>
+        <groupId>io.fd.honeycomb.common</groupId>
+        <artifactId>impl-parent</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../../common/impl-parent</relativePath>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>io.fd.honeycomb.v3po</groupId>
+    <artifactId>vpp-japi-cfg</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <packaging>bundle</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.fd.vpp</groupId>
+            <artifactId>vppjapi</artifactId>
+            <version>1.0.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/v3po/vpp-japi-cfg/src/main/config/default-config.xml b/v3po/vpp-japi-cfg/src/main/config/default-config.xml
new file mode 100644
index 000000000..7ba72f42f
--- /dev/null
+++ b/v3po/vpp-japi-cfg/src/main/config/default-config.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2016 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.
+  -->
+
+<!-- vi: set et smarttab sw=4 tabstop=4: -->
+
+<snapshot>
+    <required-capabilities>
+        <capability>urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg?module=vpp-japi-cfg&amp;revision=2016-04-06</capability>
+    </required-capabilities>
+    <configuration>
+
+        <data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
+            <modules xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+                <module>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg">prefix:vpp-japi-impl</type>
+                    <name>vpp-japi</name>
+                </module>
+            </modules>
+
+            <services xmlns="urn:opendaylight:params:xml:ns:yang:controller:config">
+                <service>
+                    <type xmlns:prefix="urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg">prefix:vpp-japi</type>
+                    <instance>
+                        <name>vpp-japi</name>
+                        <provider>/modules/module[type='vpp-japi-impl'][name='vpp-japi']
+                        </provider>
+                    </instance>
+                </service>
+            </services>
+        </data>
+    </configuration>
+</snapshot>
diff --git a/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModule.java b/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModule.java
new file mode 100644
index 000000000..3f092e936
--- /dev/null
+++ b/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModule.java
@@ -0,0 +1,37 @@
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.japi.cfg.rev160406;
+
+import java.io.IOException;
+import org.openvpp.vppjapi.vppApi;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class VppJapiImplModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.japi.cfg.rev160406.AbstractVppJapiImplModule {
+
+    private static final Logger LOG = LoggerFactory.getLogger(VppJapiImplModule.class);
+
+    public VppJapiImplModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
+        super(identifier, dependencyResolver);
+    }
+
+    public VppJapiImplModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.japi.cfg.rev160406.VppJapiImplModule oldModule, java.lang.AutoCloseable oldInstance) {
+        super(identifier, dependencyResolver, oldModule, oldInstance);
+    }
+
+    @Override
+    public void customValidation() {
+        // add custom validation form module attributes here.
+    }
+
+    @Override
+    public java.lang.AutoCloseable createInstance() {
+        try {
+            final vppApi vppApi = new vppApi(getName());
+            LOG.info("VPP-INFO: VPP api client connection established");
+            return vppApi;
+        } catch (IOException e) {
+            LOG.error("VPP-ERROR: VPP api client connection failed", e);
+            throw new IllegalStateException("Unable to open vpp API", e);
+        }
+    }
+
+}
diff --git a/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModuleFactory.java b/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModuleFactory.java
new file mode 100644
index 000000000..6b3724c6d
--- /dev/null
+++ b/v3po/vpp-japi-cfg/src/main/java/org/opendaylight/yang/gen/v1/urn/honeycomb/params/xml/ns/yang/vpp/japi/cfg/rev160406/VppJapiImplModuleFactory.java
@@ -0,0 +1,13 @@
+/*
+* Generated file
+*
+* Generated from: yang module name: vpp-japi-cfg yang module local name: vpp-japi-impl
+* Generated by: org.opendaylight.controller.config.yangjmxgenerator.plugin.JMXGenerator
+* Generated at: Wed Apr 06 11:06:28 CEST 2016
+*
+* Do not modify this file unless it is present under src/main directory
+*/
+package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.japi.cfg.rev160406;
+public class VppJapiImplModuleFactory extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.japi.cfg.rev160406.AbstractVppJapiImplModuleFactory {
+
+}
diff --git a/v3po/vpp-japi-cfg/src/main/yang/vpp-japi-cfg.yang b/v3po/vpp-japi-cfg/src/main/yang/vpp-japi-cfg.yang
new file mode 100644
index 000000000..f723f5282
--- /dev/null
+++ b/v3po/vpp-japi-cfg/src/main/yang/vpp-japi-cfg.yang
@@ -0,0 +1,38 @@
+module vpp-japi-cfg {
+    yang-version 1;
+    namespace "urn:honeycomb:params:xml:ns:yang:vpp:japi:cfg";
+    prefix "vjc";
+
+    import config { prefix config; revision-date 2013-04-05; }
+
+    description
+        "This module contains the base YANG definitions for
+         readers/writers plugged into a honeycomb";
+
+    revision "2016-04-06" {
+        description
+            "Initial revision.";
+    }
+
+    identity vpp-japi {
+        base "config:service-type";
+        config:java-class org.openvpp.vppjapi.vppApi;
+    }
+
+    identity vpp-japi-impl {
+        base config:module-type;
+        config:provided-service vpp-japi;
+    }
+
+    augment "/config:modules/config:module/config:configuration" {
+        case vpp-japi-impl {
+            when "/config:modules/config:module/config:type = 'vpp-japi-impl'";
+
+            leaf name {
+                type string;
+                default "v3poODL";
+            }
+        }
+    }
+
+}
\ No newline at end of file