Add a power management application

Change-Id: I7f3271b6f45d0e0b990049db1333843a0cd5f06a
diff --git a/apps/powermanagement/BUCK b/apps/powermanagement/BUCK
new file mode 100644
index 0000000..41d7956
--- /dev/null
+++ b/apps/powermanagement/BUCK
@@ -0,0 +1,30 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//lib:JACKSON',
+    '//core/store/serializers:onos-core-serializers',
+    '//utils/rest:onlab-rest',
+    '//lib:javax.ws.rs-api',
+]
+
+TEST_DEPS = [
+    '//lib:TEST_REST',
+    '//core/api:onos-api-tests',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+    test_deps = TEST_DEPS,
+    web_context = '/onos/powermanagement',
+    api_title = 'Power Management API',
+    api_version = '1.0',
+    api_description = 'REST API for Power Management',
+    api_package = 'org.onosproject.powermanagement',
+)
+
+onos_app (
+    title = 'Power Management',
+    category = 'Monitoring',
+    url = 'http://onosproject.org',
+    description = 'This application provides northbound interfaces for monitoring and ' +
+        'configuring power.',
+)
diff --git a/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebApplication.java b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebApplication.java
new file mode 100644
index 0000000..878186d
--- /dev/null
+++ b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebApplication.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2017-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.powermanagement;
+
+import org.onlab.rest.AbstractWebApplication;
+
+import java.util.Set;
+
+/**
+ * Power Management Web application.
+ */
+public class PowerConfigWebApplication extends AbstractWebApplication {
+    @Override
+    public Set<Class<?>> getClasses() {
+        return getClasses(PowerConfigWebResource.class);
+    }
+}
diff --git a/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebResource.java b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebResource.java
new file mode 100644
index 0000000..afcdfbd
--- /dev/null
+++ b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/PowerConfigWebResource.java
@@ -0,0 +1,277 @@
+/*
+ * Copyright 2017-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.powermanagement;
+
+import org.onosproject.net.Device;
+import org.onosproject.net.Direction;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.behaviour.PowerConfig;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.rest.AbstractWebResource;
+
+import static org.onosproject.net.DeviceId.deviceId;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Range;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.slf4j.Logger;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manage inventory of infrastructure devices with Power Config behaviour.
+ */
+@Path("devices")
+public class PowerConfigWebResource extends AbstractWebResource {
+
+    private static final String JSON_INVALID = "Invalid json input";
+    private static final String DEVICE_NOT_FOUND = "Device is not found";
+    private static final String POWERCONFIG_UNSUPPORTED = "Power Config is not supported";
+    private static final String DIRECTION_UNSUPPORTED = "Direction is not supported";
+
+    private static final String DEVICES = "powerConfigDevices";
+    private static final String PORTS = "ports";
+    private static final String DEVICE_ID = "deviceId";
+    private static final String DEVICE_IDS = "powerConfigDeviceIds";
+    private static final String POWERCONFIG_SUPPORTED = "powerConfigSupported";
+    private static final String DIRECTION = "direction";
+    private static final String PORT_ID = "portId";
+    private static final String TARGET_POWER = "targetPower";
+    private static final String CURRENT_POWER = "currentPower";
+    private static final String INPUT_POWER_RANGE = "inputPowerRange";
+    private static final String TARGET_POWER_RANGE = "targetPowerRange";
+
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    private static final Logger log = getLogger(PowerConfigWebResource.class);
+
+    /**
+     * Gets all power config devices.
+     * Returns array of all discovered power config devices.
+     *
+     * @return 200 OK with a collection of devices
+     * @onos.rsModel PowerConfigDevicesGet
+     */
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getDevices() {
+        ObjectNode root = mapper().createObjectNode();
+        ArrayNode deviceIdsNode = root.putArray(DEVICE_IDS);
+
+        Iterable<Device> devices = get(DeviceService.class).getDevices();
+        if (devices != null) {
+            for (Device d : devices) {
+                if (getPowerConfig(d.id().toString()) != null) {
+                    deviceIdsNode.add(d.id().toString());
+                }
+            }
+        }
+
+        return ok(root).build();
+    }
+
+    /**
+     * Applies the target power for the specified device.
+     *
+     * @param stream JSON representation of device, port, component and target
+     * power info
+     * @return status of the request - CREATED if the JSON is correct,
+     * BAD_REQUEST if the JSON is invalid
+     * @onos.rsModel PowerConfigPut
+     */
+    @PUT
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response setTargetPower(InputStream stream) {
+        try {
+            ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream);
+            decode(jsonTree);
+            return Response.ok().build();
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    /**
+     * Gets the details of a power config device.
+     * Returns the details of the specified power config device.
+     *
+     * @param id device identifier
+     * @return 200 OK with a device
+     * @onos.rsModel PowerConfigDeviceGet
+     */
+    @GET
+    @Path("{id}")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getDevice(@PathParam("id") String id) {
+        ObjectNode result = mapper.createObjectNode();
+        result.put(POWERCONFIG_SUPPORTED, (getPowerConfig(id) != null) ? true : false);
+        return ok(result).build();
+    }
+
+    private PowerConfig<Object> getPowerConfig(String id) {
+        Device device = get(DeviceService.class).getDevice(deviceId(id));
+        if (device == null) {
+            throw new IllegalArgumentException(DEVICE_NOT_FOUND);
+        }
+        if (device.is(PowerConfig.class)) {
+            return device.as(PowerConfig.class);
+        }
+        return null;
+    }
+
+    /**
+     * Gets the ports of a power config device.
+     * Returns the details of the specified power config device ports.
+     *
+     * @onos.rsModel PowerConfigDeviceGetPorts
+     * @param id device identifier
+     * @param direction port direction
+     * @param channel port channel
+     * @return 200 OK with a collection of ports of the given device
+     */
+    @GET
+    @Path("{id}/ports")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getDevicePorts(@PathParam("id") String id,
+                                   @QueryParam("direction") String direction,
+                                   @QueryParam("channel") String channel) {
+        PowerConfig<Object> powerConfig = getPowerConfig(id);
+        if (powerConfig == null) {
+            throw new IllegalArgumentException(POWERCONFIG_UNSUPPORTED);
+        }
+        if (direction == null && channel == null) {
+            direction = "ALL";
+            // TODO: Fallback to all channels?
+        }
+        ObjectNode result = encode(powerConfig, direction, channel);
+        return ok(result).build();
+    }
+
+    private ObjectNode encode(PowerConfig<Object> powerConfig, String direction, String channel) {
+        checkNotNull(powerConfig, "PowerConfig cannot be null");
+        ObjectNode powerConfigPorts = mapper.createObjectNode();
+        Multimap<PortNumber, Object> portsMap = HashMultimap.create();
+
+        if (direction != null) {
+            for (PortNumber port : powerConfig.getPorts(direction)) {
+                portsMap.put(port, Direction.valueOf(direction.toUpperCase()));
+            }
+        }
+
+        if (channel != null) {
+            for (PortNumber port : powerConfig.getPorts(channel)) {
+                // TODO: channel to be handled
+                portsMap.put(port, channel);
+            }
+        }
+
+        for (Map.Entry<PortNumber, Object> entry : portsMap.entries()) {
+            PortNumber port = entry.getKey();
+            ObjectNode powerConfigComponents = mapper.createObjectNode();
+            for (Object component : portsMap.get(port)) {
+                // TODO: channel to be handled
+                String componentName = "unknown";
+                if (component instanceof Direction) {
+                    componentName = component.toString();
+                }
+                ObjectNode powerConfigNode = mapper.createObjectNode()
+                        .put(CURRENT_POWER, powerConfig.currentPower(port, component).orElse(0L))
+                        .put(TARGET_POWER, powerConfig.getTargetPower(port, component).orElse(0L))
+                        .put(INPUT_POWER_RANGE, powerConfig.getInputPowerRange(port,
+                                component).orElse(Range.closed(0L, 0L)).toString())
+                        .put(TARGET_POWER_RANGE, powerConfig.getTargetPowerRange(port,
+                                component).orElse(Range.closed(0L, 0L)).toString());
+                powerConfigComponents.set(componentName, powerConfigNode);
+            }
+            powerConfigPorts.set(port.toString(), powerConfigComponents);
+        }
+
+        ObjectNode result = mapper.createObjectNode();
+        result.set("powerConfigPorts", powerConfigPorts);
+        return result;
+    }
+
+    public void decode(ObjectNode json) {
+        if (json == null || !json.isObject()) {
+            throw new IllegalArgumentException(JSON_INVALID);
+        }
+
+        JsonNode devicesNode = json.get(DEVICES);
+        if (!devicesNode.isObject()) {
+            throw new IllegalArgumentException(JSON_INVALID);
+        }
+
+        Iterator<Entry<String, JsonNode>> deviceEntries = devicesNode.fields();
+        while (deviceEntries.hasNext()) {
+            Entry<String, JsonNode> deviceEntryNext = deviceEntries.next();
+            String deviceId = deviceEntryNext.getKey();
+            PowerConfig<Object> powerConfig = getPowerConfig(deviceId);
+            JsonNode portsNode = deviceEntryNext.getValue();
+            if (!portsNode.isObject()) {
+                throw new IllegalArgumentException(JSON_INVALID);
+            }
+
+            Iterator<Entry<String, JsonNode>> portEntries = portsNode.fields();
+            while (portEntries.hasNext()) {
+                Entry<String, JsonNode> portEntryNext = portEntries.next();
+                PortNumber portNumber = PortNumber.portNumber(portEntryNext.getKey());
+                JsonNode componentsNode = portEntryNext.getValue();
+                Iterator<Entry<String, JsonNode>> componentEntries = componentsNode.fields();
+                while (componentEntries.hasNext()) {
+                    Direction direction = null;
+                    Entry<String, JsonNode> componentEntryNext = componentEntries.next();
+                    try {
+                        direction = Direction.valueOf(componentEntryNext.getKey().toUpperCase());
+                    } catch (IllegalArgumentException e) {
+                        // TODO: Handle other components
+                    }
+
+                    JsonNode powerNode = componentEntryNext.getValue();
+                    if (!powerNode.isObject()) {
+                        throw new IllegalArgumentException(JSON_INVALID);
+                    }
+                    Long targetPower = powerNode.get(TARGET_POWER).asLong();
+                    if (direction != null) {
+                        powerConfig.setTargetPower(portNumber, direction, targetPower);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/apps/powermanagement/src/main/java/org/onosproject/powermanagement/package-info.java b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/package-info.java
new file mode 100644
index 0000000..4a69745
--- /dev/null
+++ b/apps/powermanagement/src/main/java/org/onosproject/powermanagement/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2017-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.
+ */
+
+/**
+ * Application to monitor and configure power.
+ */
+package org.onosproject.powermanagement;
diff --git a/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGet.json b/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGet.json
new file mode 100644
index 0000000..e3d3068
--- /dev/null
+++ b/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGet.json
@@ -0,0 +1,13 @@
+{
+  "type": "object",
+  "title": "powerConfigSupported",
+  "required": [
+    "powerConfigSupported"
+  ],
+  "properties": {
+    "powerConfigSupported": {
+      "type": "boolean",
+      "example": true
+    }
+  }
+}
diff --git a/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGetPorts.json b/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGetPorts.json
new file mode 100644
index 0000000..97dd7bb
--- /dev/null
+++ b/apps/powermanagement/src/main/resources/definitions/PowerConfigDeviceGetPorts.json
@@ -0,0 +1,38 @@
+{
+  "type": "object",
+  "title": "powerConfigPorts",
+  "additionalProperties": {
+    "type": "object",
+    "title": "powerConfigPort",
+    "additionalProperties": {
+      "type": "object",
+      "title": "powerConfigComponent",
+      "required": [
+        "currentPower",
+        "targetPower",
+        "inputPowerRange",
+        "targetPowerRange"
+      ],
+      "properties": {
+        "currentPower": {
+          "type": "integer",
+          "format": "int64",
+          "example": -755
+        },
+        "targetPower": {
+          "type": "integer",
+          "format": "int64",
+          "example": -800
+        },
+        "inputPowerRange": {
+          "type": "string",
+          "example": "[-6000..2800]"
+        },
+        "targetPowerRange": {
+          "type": "string",
+          "example": "[-6000..2800]"
+        }
+      }
+    }
+  }
+}
diff --git a/apps/powermanagement/src/main/resources/definitions/PowerConfigDevicesGet.json b/apps/powermanagement/src/main/resources/definitions/PowerConfigDevicesGet.json
new file mode 100644
index 0000000..f070cb6
--- /dev/null
+++ b/apps/powermanagement/src/main/resources/definitions/PowerConfigDevicesGet.json
@@ -0,0 +1,20 @@
+{
+  "type": "object",
+  "title": "powerConfigDeviceIds",
+  "required": [
+    "powerConfigDeviceIds"
+  ],
+  "properties": {
+    "powerConfigDeviceIds": {
+      "type": "array",
+      "xml": {
+        "name": "powerConfigDeviceId",
+        "wrapped": true
+      },
+      "items": {
+        "type": "string",
+        "example": "of:0000000000000001"
+      }
+    }
+  }
+}
diff --git a/apps/powermanagement/src/main/resources/definitions/PowerConfigPut.json b/apps/powermanagement/src/main/resources/definitions/PowerConfigPut.json
new file mode 100644
index 0000000..c5a3070
--- /dev/null
+++ b/apps/powermanagement/src/main/resources/definitions/PowerConfigPut.json
@@ -0,0 +1,31 @@
+{
+  "type": "object",
+  "title": "powerConfigPut",
+  "required": [
+    "powerConfigDevices"
+  ],
+  "properties": {
+    "powerConfigDevices": {
+      "type": "object",
+      "title": "powerConfigDevicePut",
+      "additionalProperties": {
+        "type": "object",
+        "title": "powerConfigPortPut",
+        "additionalProperties": {
+          "type": "object",
+          "title": "powerConfigComponentPut",
+          "required": [
+            "targetPower"
+          ],
+          "properties": {
+            "targetPower": {
+              "type": "integer",
+              "format": "int64",
+              "example": -1000
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/apps/powermanagement/src/main/webapp/WEB-INF/web.xml b/apps/powermanagement/src/main/webapp/WEB-INF/web.xml
new file mode 100644
index 0000000..f3440ee
--- /dev/null
+++ b/apps/powermanagement/src/main/webapp/WEB-INF/web.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2017-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.
+  -->
+
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
+         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
+         id="ONOS" version="2.5">
+    <display-name>Power Management REST API</display-name>
+
+    <security-constraint>
+        <web-resource-collection>
+            <web-resource-name>Secured</web-resource-name>
+            <url-pattern>/*</url-pattern>
+        </web-resource-collection>
+        <auth-constraint>
+            <role-name>admin</role-name>
+        </auth-constraint>
+    </security-constraint>
+
+    <security-role>
+        <role-name>admin</role-name>
+    </security-role>
+
+    <login-config>
+        <auth-method>BASIC</auth-method>
+        <realm-name>karaf</realm-name>
+    </login-config>
+
+    <servlet>
+        <servlet-name>JAX-RS Service</servlet-name>
+        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
+        <init-param>
+            <param-name>javax.ws.rs.Application</param-name>
+            <param-value>org.onosproject.powermanagement.PowerConfigWebApplication</param-value>
+        </init-param>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+
+    <servlet-mapping>
+        <servlet-name>JAX-RS Service</servlet-name>
+        <url-pattern>/*</url-pattern>
+    </servlet-mapping>
+
+</web-app>
diff --git a/drivers/polatis/netconf/src/main/java/org/onosproject/drivers/polatis/netconf/PolatisPowerConfig.java b/drivers/polatis/netconf/src/main/java/org/onosproject/drivers/polatis/netconf/PolatisPowerConfig.java
index 381d3a4..61a3727 100644
--- a/drivers/polatis/netconf/src/main/java/org/onosproject/drivers/polatis/netconf/PolatisPowerConfig.java
+++ b/drivers/polatis/netconf/src/main/java/org/onosproject/drivers/polatis/netconf/PolatisPowerConfig.java
@@ -208,9 +208,9 @@
                 .append(xmlOpen(KEY_PORT))
                 .append(xml(KEY_PORTID, Long.toString(port.toLong())))
                 .append(xml(KEY_ATTEN_MODE, VALUE_ATTEN_MODE))
-                .append(xml(KEY_ATTEN_LEVEL, Long.toString(power)))
+                .append(xml(KEY_ATTEN_LEVEL, Double.toString((double) power / VOA_MULTIPLIER)))
                 .append(xmlClose(KEY_PORT))
-                .append(xmlClose(KEY_VOA_XMLNS))
+                .append(xmlClose(KEY_VOA))
                 .toString();
         return netconfEditConfig(handler(), CFG_MODE_MERGE, cfg);
     }
diff --git a/modules.defs b/modules.defs
index ffd756a..5ea50a2 100644
--- a/modules.defs
+++ b/modules.defs
@@ -225,6 +225,7 @@
     '//apps/p4-tutorial/icmpdropper:onos-apps-p4-tutorial-icmpdropper-oar',
     '//apps/cfm:onos-apps-cfm-oar',
     '//apps/routeradvertisement:onos-apps-routeradvertisement-oar',
+    '//apps/powermanagement:onos-apps-powermanagement-oar',
 ]
 
 PROTOCOL_APPS = [