[ONOS-6463] general device Provider

Change-Id: Ibc045bffe14c24068adc7f0adc96366d0f1807a0
diff --git a/providers/general/device/src/main/java/org/onosproject/provider/general/device/api/GeneralProviderDeviceConfig.java b/providers/general/device/src/main/java/org/onosproject/provider/general/device/api/GeneralProviderDeviceConfig.java
new file mode 100644
index 0000000..de3d8d9
--- /dev/null
+++ b/providers/general/device/src/main/java/org/onosproject/provider/general/device/api/GeneralProviderDeviceConfig.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017-present 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.provider.general.device.api;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.google.common.annotations.Beta;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.config.Config;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Configuration for General device provider.
+ */
+@Beta
+public class GeneralProviderDeviceConfig extends Config<DeviceId> {
+
+    private static final String DEVICEKEYID = "deviceKeyId";
+
+
+    @Override
+    public boolean isValid() {
+        return true;
+    }
+
+    /**
+     * Gets the information of all protocols associated to the device.
+     *
+     * @return map of protocol name and relative information
+     */
+    public Map<String, DeviceInfoConfig> protocolsInfo() {
+        return getProtocolInfoMap();
+    }
+
+    private Map<String, DeviceInfoConfig> getProtocolInfoMap() {
+        Map<String, DeviceInfoConfig> deviceMap = new HashMap<>();
+        node.fieldNames().forEachRemaining(name -> {
+
+            Map<String, String> configMap = new HashMap<>();
+            JsonNode protocol = node.get(name);
+            protocol.fieldNames().forEachRemaining(info -> configMap.put(info, protocol.get(info).asText()));
+
+            String deviceKeyId = "";
+            if (protocol.has(DEVICEKEYID)) {
+                deviceKeyId = protocol.get(DEVICEKEYID).asText("");
+            }
+
+            deviceMap.put(name, new DeviceInfoConfig(configMap, deviceKeyId));
+        });
+        return deviceMap;
+    }
+
+}