Add Oplink attenuation extension and channel power drivers.

Change-Id: I2558595b03cbb6cc58237dc48b8a03e83357fe1f
diff --git a/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java b/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java
index f6bda7a..e6e5649 100644
--- a/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java
+++ b/drivers/default/src/main/java/org/onosproject/driver/DefaultCodecRegister.java
@@ -32,6 +32,7 @@
 import org.onosproject.driver.extensions.NiciraSetTunnelDst;
 import org.onosproject.driver.extensions.OfdpaMatchVlanVid;
 import org.onosproject.driver.extensions.OfdpaSetVlanVid;
+import org.onosproject.driver.extensions.OplinkAttenuation;
 import org.onosproject.driver.extensions.codec.MoveExtensionTreatmentCodec;
 import org.onosproject.driver.extensions.codec.NiciraMatchNshSiCodec;
 import org.onosproject.driver.extensions.codec.NiciraMatchNshSpiCodec;
@@ -43,6 +44,7 @@
 import org.onosproject.driver.extensions.codec.NiciraSetTunnelDstCodec;
 import org.onosproject.driver.extensions.codec.OfdpaMatchVlanVidCodec;
 import org.onosproject.driver.extensions.codec.OfdpaSetVlanVidCodec;
+import org.onosproject.driver.extensions.codec.OplinkAttenuationCodec;
 import org.slf4j.Logger;
 
 import static org.slf4j.LoggerFactory.getLogger;
@@ -71,6 +73,7 @@
         codecService.registerCodec(NiciraSetNshContextHeader.class, new NiciraSetNshContextHeaderCodec());
         codecService.registerCodec(OfdpaMatchVlanVid.class, new OfdpaMatchVlanVidCodec());
         codecService.registerCodec(OfdpaSetVlanVid.class, new OfdpaSetVlanVidCodec());
+        codecService.registerCodec(OplinkAttenuation.class, new OplinkAttenuationCodec());
         log.info("Registered default driver codecs.");
     }
 
@@ -87,6 +90,7 @@
         codecService.unregisterCodec(NiciraSetNshContextHeader.class);
         codecService.unregisterCodec(OfdpaMatchVlanVid.class);
         codecService.unregisterCodec(OfdpaSetVlanVid.class);
+        codecService.unregisterCodec(OplinkAttenuation.class);
         log.info("Unregistered default driver codecs.");
     }
 }
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkAttenuation.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkAttenuation.java
new file mode 100644
index 0000000..7816759
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkAttenuation.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.driver.extensions;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.Maps;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.net.flow.AbstractExtension;
+import org.onosproject.net.flow.instructions.ExtensionTreatment;
+import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
+
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Instruction for Oplink channel attenuation.
+ */
+public class OplinkAttenuation extends AbstractExtension implements ExtensionTreatment {
+    private static final String KEY_ATT = "attenuation";
+
+    private int attenuation;
+
+    private final KryoNamespace appKryo = new KryoNamespace.Builder()
+            .register(Map.class)
+            .build("OplinkAttenuation");
+
+    /**
+     * Creates new attenuation instruction.
+     * @param attenuation attenuation value
+     */
+    public OplinkAttenuation(int attenuation) {
+        this.attenuation = attenuation;
+    }
+
+    /**
+     * Gets the attenuation value.
+     * @return attenuation
+     */
+    public int getAttenuation() {
+        return attenuation;
+    }
+
+    /**
+     * Modify the attenuation value.
+     * @param attenuation new attenuation value
+     */
+    public void setAttenuation(int attenuation) {
+        this.attenuation = attenuation;
+    }
+
+    @Override
+    public ExtensionTreatmentType type() {
+        return ExtensionTreatmentType.ExtensionTreatmentTypes.OPLINK_ATTENUATION.type();
+    }
+
+    @Override
+    public byte[] serialize() {
+        Map<String, Object> values = Maps.newHashMap();
+        values.put(KEY_ATT, attenuation);
+        return appKryo.serialize(values);
+    }
+
+    @Override
+    public void deserialize(byte[] data) {
+        Map<String, Object> values = appKryo.deserialize(data);
+        attenuation = (int) values.get(KEY_ATT);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(attenuation);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof OplinkAttenuation) {
+            OplinkAttenuation that = (OplinkAttenuation) obj;
+            return Objects.equals(attenuation, that.attenuation);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add(KEY_ATT, attenuation)
+                .toString();
+    }
+}
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkExtensionTreatmentInterpreter.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkExtensionTreatmentInterpreter.java
new file mode 100644
index 0000000..d33e0b6
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/OplinkExtensionTreatmentInterpreter.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.driver.extensions;
+
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
+import org.onosproject.net.flow.instructions.ExtensionTreatment;
+import org.onosproject.net.flow.instructions.ExtensionTreatmentType;
+import org.onosproject.openflow.controller.ExtensionTreatmentInterpreter;
+import org.projectfloodlight.openflow.protocol.OFActionType;
+import org.projectfloodlight.openflow.protocol.OFFactory;
+import org.projectfloodlight.openflow.protocol.action.OFAction;
+import org.projectfloodlight.openflow.protocol.action.OFActionExperimenter;
+import org.projectfloodlight.openflow.protocol.action.OFActionOplinkAtt;
+import org.projectfloodlight.openflow.protocol.oxm.OFOxm;
+import org.projectfloodlight.openflow.types.U32;
+
+/**
+ * Interpreter for Oplink OpenFlow treatment extensions.
+ */
+public class OplinkExtensionTreatmentInterpreter extends AbstractHandlerBehaviour
+        implements ExtensionTreatmentInterpreter {
+
+    private static final long ATTENUATION_EXP = 0xff000088L;
+
+    @Override
+    public boolean supported(ExtensionTreatmentType extensionTreatmentType) {
+        if (extensionTreatmentType.equals(
+                ExtensionTreatmentType.ExtensionTreatmentTypes.OPLINK_ATTENUATION.type())) {
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public OFAction mapInstruction(OFFactory factory, ExtensionTreatment extensionTreatment) {
+        ExtensionTreatmentType type = extensionTreatment.type();
+        if (type.equals(ExtensionTreatmentType.ExtensionTreatmentTypes.OPLINK_ATTENUATION.type())) {
+            int att = ((OplinkAttenuation) extensionTreatment).getAttenuation();
+            return factory.actions().oplinkAtt(factory.oxms().ochSigatt(U32.ofRaw(att)));
+        }
+        return null;
+    }
+
+    @Override
+    public ExtensionTreatment mapAction(OFAction action) throws UnsupportedOperationException {
+        if (action.getType().equals(OFActionType.EXPERIMENTER)) {
+            OFActionExperimenter actionExp = (OFActionExperimenter) action;
+            if (actionExp.getExperimenter() == ATTENUATION_EXP) {
+                OFActionOplinkAtt actionAtt = (OFActionOplinkAtt) action;
+                return new OplinkAttenuation(((OFOxm<U32>) actionAtt.getField()).getValue().getRaw());
+            }
+        }
+        return null;
+    }
+}
diff --git a/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/OplinkAttenuationCodec.java b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/OplinkAttenuationCodec.java
new file mode 100644
index 0000000..ed2da00
--- /dev/null
+++ b/drivers/default/src/main/java/org/onosproject/driver/extensions/codec/OplinkAttenuationCodec.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.driver.extensions.codec;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.driver.extensions.OplinkAttenuation;
+
+import static org.onlab.util.Tools.nullIsIllegal;
+
+/**
+ * JSON Codec for OplinkAttenuation class.
+ */
+public class OplinkAttenuationCodec extends JsonCodec<OplinkAttenuation> {
+    private static final String ATTENUATION = "attenuation";
+    private static final String MISSING_ATT = "Missing value for \"attenuation\"";
+
+    @Override
+    public OplinkAttenuation decode(ObjectNode json, CodecContext context) {
+        if (json == null || !json.isObject()) {
+            return null;
+        }
+        String att = nullIsIllegal(json.get(ATTENUATION), MISSING_ATT).asText();
+        return new OplinkAttenuation(Integer.valueOf(att));
+    }
+}