HONEYCOMB-269 - Release notes update

- Update features list, postman collections,models,etc ...
- Provides samples sources mentioned in devel_plugin_vpp_tutorial
-Broken links fixed

Change-Id: I549fcec7c4e7e669cba44cafd12d824e63473533
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

9 files changed, 584 insertions, 0 deletions

diff --git a/samples/samples-impl/asciidoc/Readme.adoc b/samples/samples-impl/asciidoc/Readme.adoc
new file mode 100644
index 000000000..893c0ebfb
--- /dev/null
+++ b/samples/samples-impl/asciidoc/Readme.adoc
@@ -0,0 +1,3 @@
+= samples-impl
+
+Overview of samples-impl
\ No newline at end of file
diff --git a/samples/samples-impl/pom.xml b/samples/samples-impl/pom.xml
new file mode 100644
index 000000000..3b6bb067a
--- /dev/null
+++ b/samples/samples-impl/pom.xml
@@ -0,0 +1,75 @@
+<?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.hc2vpp.common</groupId>
+        <artifactId>vpp-impl-parent</artifactId>
+        <version>1.17.01-SNAPSHOT</version>
+        <relativePath>../../vpp-common/vpp-impl-parent</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>samples-impl</artifactId>
+    <version>1.17.01-SNAPSHOT</version>
+
+    <dependencies>
+        <!-- Api classes generated from yang model -->
+        <dependency>
+            <groupId>io.fd.hc2vpp.common</groupId>
+            <artifactId>samples-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Infrastructure communication interfaces -->
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>translate-spi</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Vpp api java wrapped -->
+        <dependency>
+            <groupId>io.fd.vpp</groupId>
+            <artifactId>jvpp-core</artifactId>
+        </dependency>
+        <!-- Infrastructure utils for translation code -->
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>translate-utils</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Jvpp specific utils for translation code -->
+        <dependency>
+            <groupId>io.fd.hc2vpp.common</groupId>
+            <artifactId>vpp-translate-utils</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Generic implementations for communication interfaces-->
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>translate-impl</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Initialization interfaces for infrastructure-->
+        <dependency>
+            <groupId>io.fd.honeycomb</groupId>
+            <artifactId>cfg-init</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <!-- Google juice injection -->
+        <dependency>
+            <groupId>com.google.inject</groupId>
+            <artifactId>guice</artifactId>
+        </dependency>
+        <!-- Google juice multibindings -->
+        <dependency>
+            <groupId>com.google.inject.extensions</groupId>
+            <artifactId>guice-multibindings</artifactId>
+        </dependency>
+        <!-- Configuration injection -->
+        <dependency>
+            <groupId>net.jmob</groupId>
+            <artifactId>guice.conf</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/Module.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/Module.java
new file mode 100644
index 000000000..d6f38caaf
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/Module.java
@@ -0,0 +1,60 @@
+/*
+ * 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.hc2vpp.samples;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.multibindings.Multibinder;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.samples.read.ModuleStateReaderFactory;
+import io.fd.hc2vpp.samples.write.ModuleWriterFactory;
+import io.fd.honeycomb.translate.read.ReaderFactory;
+import io.fd.honeycomb.translate.write.WriterFactory;
+import net.jmob.guice.conf.core.ConfigurationModule;
+
+
+/**
+ * Module class instantiating sample-plugin plugin components.
+ */
+public final class Module extends AbstractModule {
+
+    @Override
+    protected void configure() {
+        // requests injection of properties
+        install(ConfigurationModule.create());
+        requestInjection(ModuleConfiguration.class);
+
+        // bind naming context instance for reader and writer factories
+        // the first parameter is artificial name prefix in cases a name needs to be reconstructed for a vxlan tunnel
+        // that is present in VPP but not in Honeycomb (could be extracted into configuration)
+        // the second parameter is just the naming context ID (could be extracted into configuration)
+        binder().bind(NamingContext.class).toInstance(new NamingContext("vxlan-tunnel", "vxlan-tunnel-context"));
+
+        // creates reader factory binding
+        // can hold multiple binding for separate yang modules
+        final Multibinder<ReaderFactory> readerFactoryBinder = Multibinder.newSetBinder(binder(), ReaderFactory.class);
+        readerFactoryBinder.addBinding().to(ModuleStateReaderFactory.class);
+
+        // create writer factory binding
+        // can hold multiple binding for separate yang modules
+        final Multibinder<WriterFactory> writerFactoryBinder = Multibinder.newSetBinder(binder(), WriterFactory.class);
+        writerFactoryBinder.addBinding().to(ModuleWriterFactory.class);
+
+
+        // Disable notification producer for now
+//        Multibinder.newSetBinder(binder(), ManagedNotificationProducer.class).addBinding()
+//                .to(SampleNotificationProducer.class);
+    }
+}
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/ModuleConfiguration.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/ModuleConfiguration.java
new file mode 100644
index 000000000..6766213ab
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/ModuleConfiguration.java
@@ -0,0 +1,29 @@
+/*
+ * 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.hc2vpp.samples;
+
+
+import net.jmob.guice.conf.core.BindConfig;
+import net.jmob.guice.conf.core.InjectConfig;
+import net.jmob.guice.conf.core.Syntax;
+
+@BindConfig(value = "module", syntax = Syntax.JSON)
+public class ModuleConfiguration {
+
+    // inject property from resource file
+    @InjectConfig(value = "some.prop.name")
+    String somePropValue;
+}
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/ModuleStateReaderFactory.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/ModuleStateReaderFactory.java
new file mode 100644
index 000000000..83e91a2ad
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/ModuleStateReaderFactory.java
@@ -0,0 +1,70 @@
+/*
+ * 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.hc2vpp.samples.read;
+
+import com.google.inject.Inject;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.honeycomb.translate.impl.read.GenericListReader;
+import io.fd.honeycomb.translate.read.ReaderFactory;
+import io.fd.honeycomb.translate.read.registry.ModifiableReaderRegistryBuilder;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.SamplePluginState;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.SamplePluginStateBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.Vxlans;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.VxlansBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnel;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Factory producing readers for sample-plugin plugin's data.
+ */
+public final class ModuleStateReaderFactory implements ReaderFactory {
+
+    public static final InstanceIdentifier<SamplePluginState> ROOT_STATE_CONTAINER_ID =
+            InstanceIdentifier.create(SamplePluginState.class);
+
+    /**
+     * Injected vxlan naming context shared with writer, provided by this plugin
+     */
+    @Inject
+    private NamingContext vxlanNamingContext;
+    /**
+     * Injected jvpp core APIs, provided by Honeycomb's infrastructure
+     */
+    @Inject
+    private FutureJVppCore jvppCore;
+
+    @Override
+    public void init(@Nonnull final ModifiableReaderRegistryBuilder registry) {
+        // register reader that only delegate read's to its children
+        registry.addStructuralReader(ROOT_STATE_CONTAINER_ID, SamplePluginStateBuilder.class);
+        // register reader that only delegate read's to its children
+        registry.addStructuralReader(ROOT_STATE_CONTAINER_ID.child(Vxlans.class), VxlansBuilder.class);
+
+        // just adds reader to the structure
+        // use addAfter/addBefore if you want to add specific order to readers on the same level of tree
+        // use subtreeAdd if you want to handle multiple nodes in single customizer/subtreeAddAfter/subtreeAddBefore if you also want to add order
+        // be aware that instance identifier passes to subtreeAdd/subtreeAddAfter/subtreeAddBefore should define subtree,
+        // therefore it should be relative from handled node down - InstanceIdentifier.create(HandledNode), not parent.child(HandledNode.class)
+        registry.add(new GenericListReader<>(
+                // What part of subtree this reader handles is identified by an InstanceIdentifier
+                ROOT_STATE_CONTAINER_ID.child(Vxlans.class).child(VxlanTunnel.class),
+                // Customizer (the actual translation code to do the heavy lifting)
+                new VxlanReadCustomizer(jvppCore, vxlanNamingContext)));
+    }
+}
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/VxlanReadCustomizer.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/VxlanReadCustomizer.java
new file mode 100644
index 000000000..133155b6f
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/read/VxlanReadCustomizer.java
@@ -0,0 +1,173 @@
+/*
+ * 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.hc2vpp.samples.read;
+
+
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import io.fd.hc2vpp.common.translate.util.AddressTranslator;
+import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
+import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
+import io.fd.vpp.jvpp.core.dto.VxlanTunnelDetails;
+import io.fd.vpp.jvpp.core.dto.VxlanTunnelDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.VxlanTunnelDump;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.VxlansBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnelBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnelKey;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import javax.annotation.Nonnull;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+
+/**
+ * Reader for {@link VxlanTunnel} list node from our YANG model.
+ */
+public final class VxlanReadCustomizer implements
+        ListReaderCustomizer<VxlanTunnel, VxlanTunnelKey, VxlanTunnelBuilder>,
+        // provides utility methods to translate binary data
+        ByteDataTranslator,
+        // provides utility methods to translate Ipv4,Ipv6,Mac addresses.
+        // in case that just one address family processing is needed,use *address-family-name*Translator,
+        // for ex Ipv4Translator
+        AddressTranslator,
+        // provides utility methods to consume results of jvpp api calls
+        JvppReplyConsumer {
+
+    // JVpp core. This is the Java API for VPP's core API.
+    private final FutureJVppCore jVppCore;
+    // Naming context for interfaces
+    // Honeycomb provides a "context" storage for plugins. This storage is used for storing metadata required during
+    // data translation (just like in this plugin). An example of such metadata would be interface identifier. In Honeycomb
+    // we use string names for interfaces, however VPP uses only indices (that are created automatically).
+    // This means that translation layer has to store the mapping between HC interface name <-> VPP' interface index.
+    // And since vxlan tunnel is a type of interface in VPP, the same applies here
+    //
+    // Honeycomb provides a couple utilities on top of context storage such as NamingContext. It is just a map
+    // backed by context storage that makes the lookup and storing easier.
+    private final NamingContext vxlanNamingContext;
+
+    // Dump manager that provides intelligent caching based on provided contextual key
+    private DumpCacheManager<VxlanTunnelDetailsReplyDump, Integer> dumpManager;
+
+    public VxlanReadCustomizer(final FutureJVppCore jVppCore, final NamingContext vxlanNamingContext) {
+        this.jVppCore = jVppCore;
+        this.vxlanNamingContext = vxlanNamingContext;
+
+        this.dumpManager = new DumpCacheManager.DumpCacheManagerBuilder<VxlanTunnelDetailsReplyDump, Integer>()
+                // executor handles dumping of data itself, based on provided lambda
+                // instanceIdentifier - identifier of entity that we are caching, should be the one passed as parameter
+                // to getAllIds or readCurrentAttributes. Caching is by default performed based on this key
+                // param - can be anything that needs to be bind to request
+                .withExecutor((instanceIdentifier, param) -> {
+                    // creates dump request
+                    final VxlanTunnelDump vxlanTunnelDump = new VxlanTunnelDump();
+                    // binds parameters, in this case index of interface
+                    vxlanTunnelDump.swIfIndex = param;
+                    // perform dump action with default timeout and either return result or throw ReadFailedException
+                    // identified by provided instanceIdentifier
+                    return getReplyForRead(jVppCore.vxlanTunnelDump(vxlanTunnelDump).toCompletableFuture(), instanceIdentifier);
+                })
+                // this provides type-awareness for caching, so multiple DumpManagers can be used withing the same
+                // customizer, using same instance identifiers, as long as they handle different data types
+                .acceptOnly(VxlanTunnelDetailsReplyDump.class)
+
+                // either acceptOnly is required or custom cache key factory must be provided to tell manager,
+                // how to produce keys. can be used to change caching scope of data
+                //.withCacheKeyFactory()
+
+                // serves as post-dump processing of any kind, triggered only once after calling executor
+                //.withPostProcessingFunction()
+                .build();
+    }
+
+    /**
+     * Provide a list of IDs for all VXLANs in VPP
+     */
+    @Nonnull
+    @Override
+    public List<VxlanTunnelKey> getAllIds(@Nonnull final InstanceIdentifier<VxlanTunnel> id,
+                                          @Nonnull final ReadContext context)
+            throws ReadFailedException {
+
+        final Optional<VxlanTunnelDetailsReplyDump> dump = dumpManager.getDump(id, context.getModificationCache(), 0);
+
+        if (!dump.isPresent()) {
+            return Collections.emptyList();
+        }
+
+        return dump.get().vxlanTunnelDetails.stream()
+                // Need a name of an interface here. Use context to look it up from index
+                // In case the naming context does not contain such mapping, it creates an artificial one
+                .map(a -> new VxlanTunnelKey(vxlanNamingContext.getName(a.swIfIndex, context.getMappingContext())))
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<VxlanTunnel> readData) {
+        // Just set the readValue into parent builder
+        // The cast has to be performed here
+        ((VxlansBuilder) builder).setVxlanTunnel(readData);
+    }
+
+    @Nonnull
+    @Override
+    public VxlanTunnelBuilder getBuilder(@Nonnull final InstanceIdentifier<VxlanTunnel> id) {
+        // Setting key from id is not necessary, builder will take care of that
+        return new VxlanTunnelBuilder();
+    }
+
+    /**
+     * Read all the attributes of a single VXLAN tunnel
+     */
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanTunnel> id,
+                                      @Nonnull final VxlanTunnelBuilder builder,
+                                      @Nonnull final ReadContext ctx) throws ReadFailedException {
+        // The ID received here contains the name of a particular interface that should be read
+        // It was either requested directly by HC users or is one of the IDs from getAllIds that could have been invoked
+        // just before this method invocation
+        final String vxlanName = id.firstKeyOf(VxlanTunnel.class).getId();
+
+        // Naming context must contain the mapping because:
+        // 1. The vxlan tunnel was created in VPP using HC + this plugin meaning we stored the mapping in write customizer
+        // 2. The vxlan tunnel was already present in VPP, but HC reconciliation mechanism took care of that (as long as proper Initializer is provided by this plugin)
+
+        final Optional<VxlanTunnelDetailsReplyDump> dump = dumpManager.getDump(id, ctx.getModificationCache(),
+                vxlanNamingContext.getIndex(vxlanName, ctx.getMappingContext()));
+
+
+        Preconditions.checkState(dump.isPresent() && dump.get().vxlanTunnelDetails != null);
+        final VxlanTunnelDetails singleVxlanDetail = dump.get().vxlanTunnelDetails.stream().findFirst().get();
+
+        // Now translate all attributes into provided builder
+        final Boolean isIpv6 = byteToBoolean(singleVxlanDetail.isIpv6);
+        builder.setSrc(arrayToIpAddress(isIpv6, singleVxlanDetail.srcAddress));
+        builder.setDst(arrayToIpAddress(isIpv6, singleVxlanDetail.dstAddress));
+        // There are additional attributes of a vxlan tunnel that wont be used here
+    }
+}
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/ModuleWriterFactory.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/ModuleWriterFactory.java
new file mode 100644
index 000000000..346141429
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/ModuleWriterFactory.java
@@ -0,0 +1,60 @@
+/*
+ * 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.hc2vpp.samples.write;
+
+import com.google.inject.Inject;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.honeycomb.translate.impl.write.GenericWriter;
+import io.fd.honeycomb.translate.write.WriterFactory;
+import io.fd.honeycomb.translate.write.registry.ModifiableWriterRegistryBuilder;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.SamplePlugin;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.Vxlans;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnel;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Factory producing writers for sample-plugin plugin's data.
+ */
+public final class ModuleWriterFactory implements WriterFactory {
+
+    private static final InstanceIdentifier<SamplePlugin> ROOT_CONTAINER_ID = InstanceIdentifier.create(SamplePlugin.class);
+
+    /**
+     * Injected vxlan naming context shared with writer, provided by this plugin
+     */
+    @Inject
+    private NamingContext vxlanNamingContext;
+    /**
+     * Injected jvpp core APIs, provided by Honeycomb's infrastructure
+     */
+    @Inject
+    private FutureJVppCore jvppCore;
+
+    @Override
+    public void init(@Nonnull final ModifiableWriterRegistryBuilder registry) {
+        // Unlike ReaderFactory, there's no need to add structural writers, just the writers that actually do something
+
+        // register writer for vxlan tunnel
+        registry.add(new GenericWriter<>(
+                // What part of subtree this writer handles is identified by an InstanceIdentifier
+                ROOT_CONTAINER_ID.child(Vxlans.class).child(VxlanTunnel.class),
+                // Customizer (the actual translation code to do the heavy lifting)
+                new VxlanWriteCustomizer(jvppCore, vxlanNamingContext)));
+    }
+}
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/VxlanWriteCustomizer.java b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/VxlanWriteCustomizer.java
new file mode 100644
index 000000000..77c67b290
--- /dev/null
+++ b/samples/samples-impl/src/main/java/io/fd/hc2vpp/samples/write/VxlanWriteCustomizer.java
@@ -0,0 +1,111 @@
+/*
+ * 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.hc2vpp.samples.write;
+
+
+import io.fd.hc2vpp.common.translate.util.AddressTranslator;
+import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.vpp.jvpp.core.dto.VxlanAddDelTunnel;
+import io.fd.vpp.jvpp.core.dto.VxlanAddDelTunnelReply;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnel;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.sample.plugin.rev161214.sample.plugin.params.vxlans.VxlanTunnelKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Writer for {@link VxlanTunnel} list node from our YANG model.
+ */
+public final class VxlanWriteCustomizer implements ListWriterCustomizer<VxlanTunnel, VxlanTunnelKey>,
+        ByteDataTranslator,
+        AddressTranslator,
+        JvppReplyConsumer {
+
+    /**
+     * JVpp APIs
+     */
+    private final FutureJVppCore jvppCore;
+    /**
+     * Shared vxlan tunnel naming context
+     */
+    private final NamingContext vxlanTunnelNamingContext;
+
+    public VxlanWriteCustomizer(final FutureJVppCore jvppCore, final NamingContext vxlanTunnelNamingContext) {
+        this.jvppCore = jvppCore;
+        this.vxlanTunnelNamingContext = vxlanTunnelNamingContext;
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanTunnel> id,
+                                       @Nonnull final VxlanTunnel dataAfter,
+                                       @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        // Create and set vxlan tunnel add request
+        final VxlanAddDelTunnel vxlanAddDelTunnel = new VxlanAddDelTunnel();
+        // 1 for add, 0 for delete
+        vxlanAddDelTunnel.isAdd = 1;
+        // dataAfter is the new vxlanTunnel configuration
+        final boolean isIpv6 = dataAfter.getSrc().getIpv6Address() != null;
+        vxlanAddDelTunnel.isIpv6 = booleanToByte(isIpv6);
+        vxlanAddDelTunnel.srcAddress = ipAddressToArray(isIpv6, dataAfter.getSrc());
+        vxlanAddDelTunnel.dstAddress = ipAddressToArray(isIpv6, dataAfter.getDst());
+        // There are other input parameters that are not exposed by our YANG model, default values will be used
+
+
+        final VxlanAddDelTunnelReply replyForWrite = getReplyForWrite(jvppCore.vxlanAddDelTunnel(vxlanAddDelTunnel).toCompletableFuture(), id);
+
+        // VPP returns the index of new vxlan tunnel
+        final int newVxlanTunnelIndex = replyForWrite.swIfIndex;
+        // It's important to store it in context so that reader knows to which name a vxlan tunnel is mapped
+        vxlanTunnelNamingContext.addName(newVxlanTunnelIndex, dataAfter.getId(), writeContext.getMappingContext());
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanTunnel> id,
+                                        @Nonnull final VxlanTunnel dataBefore,
+                                        @Nonnull final VxlanTunnel dataAfter, @Nonnull final WriteContext writeContext)
+            throws WriteFailedException {
+        // Not supported at VPP API level, throw exception
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+                new UnsupportedOperationException("Vxlan tunnel update is not supported by VPP"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<VxlanTunnel> id,
+                                        @Nonnull final VxlanTunnel dataBefore,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        // Create and set vxlan tunnel add request
+        final VxlanAddDelTunnel vxlanAddDelTunnel = new VxlanAddDelTunnel();
+        // 1 for add, 0 for delete
+        vxlanAddDelTunnel.isAdd = 0;
+        // Vxlan tunnel is identified by its attributes when deleting, not index, so set all attributes
+        // dataBefore is the vxlan tunnel that's being deleted
+        final boolean isIpv6 = dataBefore.getSrc().getIpv6Address() != null;
+        vxlanAddDelTunnel.isIpv6 = booleanToByte(isIpv6);
+        vxlanAddDelTunnel.srcAddress = ipAddressToArray(isIpv6, dataBefore.getSrc());
+        vxlanAddDelTunnel.dstAddress = ipAddressToArray(isIpv6, dataBefore.getDst());
+        // There are other input parameters that are not exposed by our YANG model, default values will be used
+
+        final VxlanAddDelTunnelReply replyForWrite = getReplyForWrite(jvppCore.vxlanAddDelTunnel(vxlanAddDelTunnel).toCompletableFuture(), id);
+        // It's important to remove the mapping from context
+        vxlanTunnelNamingContext.removeName(dataBefore.getId(), writeContext.getMappingContext());
+    }
+}
\ No newline at end of file
diff --git a/samples/samples-impl/src/main/resources/module.json b/samples/samples-impl/src/main/resources/module.json
new file mode 100644
index 000000000..da70698d2
--- /dev/null
+++ b/samples/samples-impl/src/main/resources/module.json
@@ -0,0 +1,3 @@
+{
+  "some.prop.name":"someValue"
+}
\ No newline at end of file