Add JSON to CLI commands

- Drivers
- Groups

Change-Id: Ib47dc75d9db839329e6cf8fc4439150848f604f5
diff --git a/core/common/src/main/java/org/onosproject/codec/impl/DriverCodec.java b/core/common/src/main/java/org/onosproject/codec/impl/DriverCodec.java
new file mode 100644
index 0000000..4935d99
--- /dev/null
+++ b/core/common/src/main/java/org/onosproject/codec/impl/DriverCodec.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2015 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.codec.impl;
+
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.net.driver.Driver;
+
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * JSON codec for the Driver class.
+ */
+public final class DriverCodec extends JsonCodec<Driver> {
+    private static final String PARENT = "parent";
+    private static final String NAME = "name";
+    private static final String MANUFACTURER = "manufacturer";
+    private static final String HW_VERSION = "hwVersion";
+    private static final String SW_VERSION = "swVersion";
+    private static final String BEHAVIOURS = "behaviours";
+    private static final String BEHAVIORS_NAME = "name";
+    private static final String BEHAVIORS_IMPLEMENTATION_NAME = "implementationName";
+    private static final String PROPERTIES = "properties";
+
+    @Override
+    public ObjectNode encode(Driver driver, CodecContext context) {
+        checkNotNull(driver, "Driver cannot be null");
+
+        ObjectNode result = context.mapper().createObjectNode()
+                .put(NAME, driver.name())
+                .put(MANUFACTURER, driver.manufacturer())
+                .put(HW_VERSION, driver.hwVersion())
+                .put(SW_VERSION, driver.swVersion());
+
+        if (driver.parent() != null) {
+            result.put(PARENT, driver.parent().name());
+        }
+
+        ArrayNode behaviours = context.mapper().createArrayNode();
+        driver.behaviours().forEach(behaviour -> {
+            ObjectNode entry = context.mapper().createObjectNode()
+                    .put(BEHAVIORS_NAME, behaviour.getCanonicalName())
+                    .put(BEHAVIORS_IMPLEMENTATION_NAME,
+                            driver.implementation(behaviour).getCanonicalName());
+
+            behaviours.add(entry);
+        });
+        result.set(BEHAVIOURS, behaviours);
+
+        ArrayNode properties = context.mapper().createArrayNode();
+        driver.properties().forEach((name, value) -> {
+            ObjectNode entry = context.mapper().createObjectNode()
+                    .put("name", name)
+                    .put("value", value);
+
+            properties.add(entry);
+        });
+        result.set(PROPERTIES, properties);
+
+        return result;
+    }
+}