Reorganizing ODTN app structure

- separated code which could be referenced from drivers

Change-Id: Ic2c0ae0507abc626771dfaf7a8fc18b5a715cc30
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/ConfigurableTransceiver.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/ConfigurableTransceiver.java
new file mode 100644
index 0000000..a94f597
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/ConfigurableTransceiver.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.behaviour;
+
+import java.util.List;
+
+import org.onosproject.net.driver.HandlerBehaviour;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * Behaviour for Transceiver.
+ */
+@Beta
+public interface ConfigurableTransceiver extends HandlerBehaviour {
+
+    /**
+     * Generate configuration to enable/disable transceiver.
+     *
+     * @param componentName to enable/disable
+     * @param enable or disable
+     * @return XML documents (List to handle configuration with multiple-roots)
+     */
+    // return type and how component get specified are likely to change in future
+    @Beta
+    List<CharSequence> enable(String componentName, boolean enable);
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/OdtnDeviceDescriptionDiscovery.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/OdtnDeviceDescriptionDiscovery.java
new file mode 100644
index 0000000..e8657ea
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/OdtnDeviceDescriptionDiscovery.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.behaviour;
+
+import java.util.List;
+
+import org.onosproject.net.device.DeviceDescriptionDiscovery;
+import org.onosproject.net.device.PortDescription;
+
+/**
+ * DeviceDescriptionDiscovery used in ODTN.
+ *
+ * Just declaring certain Annotations will be required.
+ */
+public interface OdtnDeviceDescriptionDiscovery
+        extends DeviceDescriptionDiscovery {
+
+    /**
+     * Annotations key, which stores OpenConfig component name.
+     */
+    String OC_NAME = "oc-name";
+
+    /**
+     * Annotations key, which stores OpenConfig component type.
+     */
+    String OC_TYPE = "oc-type";
+
+    // overriding just to make checkstyle happy
+    @Override
+    List<PortDescription> discoverPortDetails();
+
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/PlainTransceiver.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/PlainTransceiver.java
new file mode 100644
index 0000000..ae14e07
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/PlainTransceiver.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.behaviour;
+
+import static org.onosproject.odtn.utils.YangToolUtil.toCharSequence;
+import static org.onosproject.odtn.utils.YangToolUtil.toCompositeData;
+import static org.onosproject.odtn.utils.YangToolUtil.toResourceData;
+import static org.onosproject.odtn.utils.YangToolUtil.toXmlCompositeStream;
+
+import java.util.List;
+
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
+import org.onosproject.odtn.utils.openconfig.Transceiver;
+import org.onosproject.yang.model.DataNode;
+import org.onosproject.yang.model.ResourceId;
+
+import com.google.common.collect.Lists;
+
+/**
+ * Plain OpenConfig based implementation.
+ */
+public class PlainTransceiver extends AbstractHandlerBehaviour
+        implements ConfigurableTransceiver {
+
+    @Override
+    public List<CharSequence> enable(String componentName, boolean enable) {
+        List<DataNode> nodes = Transceiver.enable(componentName, enable);
+
+        ResourceId empty = ResourceId.builder().build();
+        return Lists.transform(nodes,
+                   node -> toCharSequence(toXmlCompositeStream(toCompositeData(toResourceData(empty, node)))));
+    }
+
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/package-info.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/package-info.java
new file mode 100644
index 0000000..85c8df6
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/package-info.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+/**
+ * ODTN Behaviours.
+ */
+package org.onosproject.odtn.behaviour;
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/package-info.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/package-info.java
new file mode 100644
index 0000000..4171daf
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/package-info.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+/**
+ * ODTN (Open and Disaggregated Transport Networks).
+ */
+package org.onosproject.odtn;
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/YangToolUtil.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/YangToolUtil.java
new file mode 100644
index 0000000..3f097fc
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/YangToolUtil.java
@@ -0,0 +1,310 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.utils;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.StringWriter;
+
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.OutputKeys;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.osgi.DefaultServiceDirectory;
+import org.onosproject.yang.model.DataNode;
+import org.onosproject.yang.model.DefaultModelObjectData;
+import org.onosproject.yang.model.DefaultResourceData;
+import org.onosproject.yang.model.InnerNode;
+import org.onosproject.yang.model.ModelConverter;
+import org.onosproject.yang.model.ModelObject;
+import org.onosproject.yang.model.ModelObjectData;
+import org.onosproject.yang.model.ResourceData;
+import org.onosproject.yang.model.ResourceId;
+import org.onosproject.yang.runtime.CompositeData;
+import org.onosproject.yang.runtime.CompositeStream;
+import org.onosproject.yang.runtime.DefaultCompositeData;
+import org.onosproject.yang.runtime.DefaultRuntimeContext;
+import org.onosproject.yang.runtime.RuntimeContext;
+import org.onosproject.yang.runtime.YangRuntimeService;
+import org.slf4j.Logger;
+import org.w3c.dom.Document;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.google.common.annotations.Beta;
+import com.google.common.io.CharSource;
+import com.google.common.io.CharStreams;
+
+@Beta
+@Component(immediate = true)
+public class YangToolUtil {
+    private static final Logger log = getLogger(YangToolUtil.class);
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected YangRuntimeService yangRuntimeService;
+    protected static YangRuntimeService yrs;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ModelConverter modelConverter;
+    protected static ModelConverter converter;
+
+    @Activate
+    protected void activate() {
+        yrs = yangRuntimeService;
+        converter = modelConverter;
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        log.info("Stopped");
+    }
+
+    protected static void initStaticContext() {
+        if (yrs == null) {
+            yrs = DefaultServiceDirectory.getService(YangRuntimeService.class);
+        }
+        if (converter == null) {
+            converter = DefaultServiceDirectory.getService(ModelConverter.class);
+        }
+    }
+
+    /**
+     * Converts XML Document into CharSequence.
+     *
+     * @param xmlInput to convert
+     * @return CharSequence
+     */
+    public static CharSequence toCharSequence(Document xmlInput) {
+        return toCharSequence(xmlInput, true);
+    }
+
+    /**
+     * Converts XML Document into CharSequence.
+     *
+     * @param xmlInput to convert
+     * @param omitXmlDecl or not
+     * @return CharSequence
+     */
+    public static CharSequence toCharSequence(Document xmlInput, boolean omitXmlDecl) {
+        try {
+            TransformerFactory tf = TransformerFactory.newInstance();
+            Transformer transformer = tf.newTransformer();
+            if (omitXmlDecl) {
+                transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+            }
+            StringWriter writer = new StringWriter();
+            transformer.transform(new DOMSource(xmlInput), new StreamResult(writer));
+            return writer.getBuffer();
+        } catch (TransformerException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts JsonNode into CharSequence.
+     *
+     * @param jsonInput to convert
+     * @return CharSequence
+     */
+    public static CharSequence toCharSequence(JsonNode jsonInput) {
+        checkNotNull(jsonInput);
+        ObjectMapper mapper = new ObjectMapper();
+        // TODO following pretty printing option should be removed
+        mapper.enable(SerializationFeature.INDENT_OUTPUT);
+
+        try {
+            return mapper.writerWithDefaultPrettyPrinter()
+                         .writeValueAsString(jsonInput);
+        } catch (JsonProcessingException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts UTF-8 CompositeStream into CharSequence.
+     *
+     * @param utf8Input to convert
+     * @return CharSequence
+     */
+    public static CharSequence toCharSequence(CompositeStream utf8Input) {
+        StringBuilder s = new StringBuilder();
+        try {
+            CharStreams.copy(new InputStreamReader(utf8Input.resourceData(), UTF_8), s);
+            return s;
+        } catch (IOException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts JSON CompositeStream into JsonNode.
+     *
+     * @param jsonInput to convert
+     * @return JsonNode
+     */
+    public static JsonNode toJsonNode(CompositeStream jsonInput) {
+        ObjectMapper mapper = new ObjectMapper();
+        try {
+            return mapper.readTree(jsonInput.resourceData());
+        } catch (IOException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts XML CompositeStream into XML Document.
+     *
+     * @param xmlInput to convert
+     * @return Document
+     */
+    public static Document toDocument(CompositeStream xmlInput) {
+        try {
+            return DocumentBuilderFactory.newInstance()
+                    .newDocumentBuilder()
+                .parse(new InputSource(new InputStreamReader(xmlInput.resourceData(), UTF_8)));
+        } catch (ParserConfigurationException | SAXException | IOException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts XML source into XML Document.
+     *
+     * @param xmlInput to convert
+     * @return Document
+     */
+    public static Document toDocument(CharSource xmlInput) {
+        try {
+            return DocumentBuilderFactory.newInstance()
+                    .newDocumentBuilder()
+                .parse(new InputSource(xmlInput.openStream()));
+        } catch (ParserConfigurationException | SAXException | IOException e) {
+            log.error("Exception thrown", e);
+            return null;
+        }
+    }
+
+    /**
+     * Converts CompositeData into XML CompositeStream.
+     *
+     * @param input CompositeData to convert
+     * @return XML CompositeStream
+     */
+    public static CompositeStream toXmlCompositeStream(CompositeData input) {
+        initStaticContext();
+        RuntimeContext yrtContext = new DefaultRuntimeContext.Builder()
+                .setDataFormat("xml")
+                // Following does not have any effect?
+                //.addAnnotation(XMLNS_XC_ANNOTATION)
+                .build();
+        CompositeStream xml = yrs.encode(input, yrtContext);
+        return xml;
+    }
+
+    /**
+     * Converts CompositeData into JSON CompositeStream.
+     *
+     * @param input CompositeData to convert
+     * @return JSON CompositeStream
+     */
+    public static CompositeStream toJsonCompositeStream(CompositeData input) {
+        initStaticContext();
+        RuntimeContext yrtContext = new DefaultRuntimeContext.Builder()
+                .setDataFormat("JSON")
+                .build();
+        CompositeStream xml = yrs.encode(input, yrtContext);
+        return xml;
+    }
+
+    /**
+     * Converts ResourceData into CompositeData.
+     *
+     * @param input ResourceData to convert
+     * @return CompositeData
+     */
+    public static CompositeData toCompositeData(ResourceData input) {
+        CompositeData.Builder builder =
+                DefaultCompositeData.builder();
+        builder.resourceData(input);
+        // remove, merge, replace, ...
+        //builder.addAnnotatedNodeInfo(info)
+
+        return builder.build();
+    }
+
+    /**
+     * Converts DataNode into ResourceData.
+     *
+     * @param resourceId pointing to parent of {@code dataNode}, YANG-wise.
+     * @param dataNode to convert, must be InnerNode
+     * @return ResourceData
+     */
+    public static ResourceData toResourceData(ResourceId resourceId, DataNode dataNode) {
+        DefaultResourceData.Builder builder = DefaultResourceData.builder();
+        builder.resourceId(checkNotNull(resourceId));
+        if (dataNode instanceof InnerNode) {
+            ((InnerNode) dataNode).childNodes().values().forEach(builder::addDataNode);
+        } else {
+            log.error("Unexpected DataNode encountered {}", dataNode);
+        }
+        return builder.build();
+    }
+
+    /**
+     * Converts ModelObject into a DataNode.
+     *
+     * @param input ModelOject
+     * @return DataNode
+     */
+    public static DataNode toDataNode(ModelObject input) {
+        initStaticContext();
+        ModelObjectData modelData = DefaultModelObjectData.builder()
+                .addModelObject(input)
+                .identifier(null)
+                .build();
+
+        ResourceData rnode = converter.createDataNode(modelData);
+        if (rnode.dataNodes().isEmpty()) {
+            log.error("input did not result in any datanode. {}", input);
+            return null;
+        }
+        return rnode.dataNodes().get(0);
+    }
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/OpticalChannel.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/OpticalChannel.java
new file mode 100644
index 0000000..2784706
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/OpticalChannel.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.utils.openconfig;
+
+import static org.onosproject.odtn.utils.YangToolUtil.toDataNode;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.List;
+
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.DefaultComponents;
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.Component;
+import org.onosproject.yang.gen.v1.openconfigterminaldevice.rev20170708.openconfigterminaldevice.components.component.DefaultAugmentedOcPlatformComponent;
+import org.onosproject.yang.gen.v1.openconfigterminaldevice.rev20170708.openconfigterminaldevice.terminalopticalchanneltop.DefaultOpticalChannel;
+import org.onosproject.yang.gen.v1.openconfigterminaldevice.rev20170708.openconfigterminaldevice.terminalopticalchanneltop.opticalchannel.Config;
+import org.onosproject.yang.gen.v1.openconfigterminaldevice.rev20170708.openconfigterminaldevice.terminalopticalchanneltop.opticalchannel.DefaultConfig;
+import org.onosproject.yang.gen.v1.openconfigtransporttypes.rev20170816.openconfigtransporttypes.FrequencyType;
+import org.onosproject.yang.model.DataNode;
+
+import com.google.common.annotations.Beta;
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Utility methods dealing with OpenConfig optical-channel.
+ * <p>
+ * Split into classes for the purpose of avoiding "Config" class collisions.
+ */
+@Beta
+public abstract class OpticalChannel {
+
+    public static List<DataNode> preconf(String componentName) {
+
+        DefaultComponents components = new DefaultComponents();
+
+        Component component = PlainPlatform.componentWithName(componentName);
+        components.addToComponent(component);
+
+        // augmented 'component' shim
+        DefaultAugmentedOcPlatformComponent acomponent = new DefaultAugmentedOcPlatformComponent();
+
+        DefaultOpticalChannel channel = new DefaultOpticalChannel();
+
+        Config config = new DefaultConfig();
+        // TODO make these configurable
+        config.frequency(FrequencyType.of(BigInteger.valueOf(191500000)));
+        config.targetOutputPower(BigDecimal.valueOf(0.0));
+
+        channel.config(config);
+        acomponent.opticalChannel(channel);
+        component.addAugmentation(acomponent);
+
+        return ImmutableList.of(toDataNode(components));
+    }
+
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/PlainPlatform.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/PlainPlatform.java
new file mode 100644
index 0000000..0997632
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/PlainPlatform.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.utils.openconfig;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.Component;
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.DefaultComponent;
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.component.Config;
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.component.DefaultConfig;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * Utility methods dealing with OpenConfig component.
+ * <p>
+ * Split into classes for the purpose of avoiding "Config" class collisions.
+ */
+@Beta
+public abstract class PlainPlatform {
+
+    public static Component componentWithName(String componentName) {
+        checkNotNull(componentName, "componentName cannot be null");
+
+        Component component = new DefaultComponent();
+        component.name(componentName);
+        Config config = new DefaultConfig();
+        config.name(componentName);
+        component.config(config);
+        return component;
+    }
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/Transceiver.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/Transceiver.java
new file mode 100644
index 0000000..66ca6cd
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/Transceiver.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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 org.onosproject.odtn.utils.openconfig;
+
+import static org.onosproject.odtn.utils.YangToolUtil.toDataNode;
+
+import java.util.List;
+
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.DefaultComponents;
+import org.onosproject.yang.gen.v1.openconfigplatform.rev20161222.openconfigplatform.platformcomponenttop.components.Component;
+import org.onosproject.yang.gen.v1.openconfigplatformtransceiver.rev20170708.openconfigplatformtransceiver.components.component.DefaultAugmentedOcPlatformComponent;
+import org.onosproject.yang.gen.v1.openconfigplatformtransceiver.rev20170708.openconfigplatformtransceiver.porttransceivertop.DefaultTransceiver;
+import org.onosproject.yang.gen.v1.openconfigplatformtransceiver.rev20170708.openconfigplatformtransceiver.porttransceivertop.transceiver.Config;
+import org.onosproject.yang.gen.v1.openconfigplatformtransceiver.rev20170708.openconfigplatformtransceiver.porttransceivertop.transceiver.DefaultConfig;
+import org.onosproject.yang.gen.v1.openconfigtransporttypes.rev20170816.openconfigtransporttypes.Eth100GbaseLr4;
+import org.onosproject.yang.gen.v1.openconfigtransporttypes.rev20170816.openconfigtransporttypes.Qsfp28;
+import org.onosproject.yang.model.DataNode;
+
+import com.google.common.annotations.Beta;
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Utility methods dealing with OpenConfig transceiver.
+ * <p>
+ * Split into classes for the purpose of avoiding "Config" class collisions.
+ */
+@Beta
+public abstract class Transceiver {
+
+    public static List<DataNode> enable(String componentName, boolean enable) {
+
+        DefaultComponents components = new DefaultComponents();
+
+        Component component = PlainPlatform.componentWithName(componentName);
+        components.addToComponent(component);
+
+        // augmented 'component' shim
+        DefaultAugmentedOcPlatformComponent tcomponent = new DefaultAugmentedOcPlatformComponent();
+
+        DefaultTransceiver transceiver = new DefaultTransceiver();
+
+        Config configt = new DefaultConfig();
+        configt.enabled(enable); // phase 1.0 flag
+        transceiver.config(configt);
+        tcomponent.transceiver(transceiver);
+        component.addAugmentation(tcomponent);
+
+        return ImmutableList.of(toDataNode(components));
+    }
+
+    public static List<DataNode> preconf(String componentName) {
+        DefaultComponents components = new DefaultComponents();
+
+        Component component = PlainPlatform.componentWithName(componentName);
+        components.addToComponent(component);
+
+        // augmented 'component' shim
+        DefaultAugmentedOcPlatformComponent tcomponent = new DefaultAugmentedOcPlatformComponent();
+
+        DefaultTransceiver transceiver = new DefaultTransceiver();
+
+        Config configt = new DefaultConfig();
+        // TODO make these configurable
+        configt.formFactorPreconf(Qsfp28.class);
+        configt.ethernetPmdPreconf(Eth100GbaseLr4.class);
+        transceiver.config(configt);
+        tcomponent.transceiver(transceiver);
+        component.addAugmentation(tcomponent);
+
+        return ImmutableList.of(toDataNode(components));
+    }
+
+}
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/package-info.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/package-info.java
new file mode 100644
index 0000000..3b83083
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/openconfig/package-info.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+/**
+ * Utilities to deal with onos-yang-tools OpenConfig objects..
+ */
+package org.onosproject.odtn.utils.openconfig;
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/package-info.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/package-info.java
new file mode 100644
index 0000000..4f15f89
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/utils/package-info.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+/**
+ * Utilities developed for ODTN.
+ */
+package org.onosproject.odtn.utils;