ONOS-3692 Southbound Rest provider and protocol

Change-Id: I74a5752d4fce1df88828fa6c531979ab7c30a26a
t
diff --git a/providers/rest/device/src/main/java/org/onosproject/provider/rest/device/impl/RestProviderConfig.java b/providers/rest/device/src/main/java/org/onosproject/provider/rest/device/impl/RestProviderConfig.java
new file mode 100644
index 0000000..2056dce
--- /dev/null
+++ b/providers/rest/device/src/main/java/org/onosproject/provider/rest/device/impl/RestProviderConfig.java
@@ -0,0 +1,68 @@
+/*
+ * 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.provider.rest.device.impl;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.google.common.annotations.Beta;
+import com.google.common.collect.Sets;
+import org.onlab.packet.IpAddress;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.incubator.net.config.basics.ConfigException;
+import org.onosproject.net.config.Config;
+import org.onosproject.protocol.rest.DefaultRestSBDevice;
+import org.onosproject.protocol.rest.RestSBDevice;
+
+
+import java.util.Set;
+
+/**
+ * Configuration for RestSB provider.
+ */
+@Beta
+public class RestProviderConfig extends Config<ApplicationId> {
+
+    public static final String CONFIG_VALUE_ERROR = "Error parsing config value";
+    private static final String IP = "ip";
+    private static final int DEFAULT_HTTP_PORT = 80;
+    private static final String PORT = "port";
+    private static final String NAME = "name";
+    private static final String PASSWORD = "password";
+    private static final String PROTOCOL = "protocol";
+
+    public Set<RestSBDevice> getDevicesAddresses() throws ConfigException {
+        Set<RestSBDevice> devicesAddresses = Sets.newHashSet();
+
+        try {
+            for (JsonNode node : array) {
+                String ip = node.path(IP).asText();
+                IpAddress ipAddr = ip.isEmpty() ? null : IpAddress.valueOf(ip);
+                int port = node.path(PORT).asInt(DEFAULT_HTTP_PORT);
+                String name = node.path(NAME).asText();
+                String password = node.path(PASSWORD).asText();
+                String protocol = node.path(PROTOCOL).asText();
+                devicesAddresses.add(new DefaultRestSBDevice(ipAddr, port, name,
+                                                             password, protocol, false));
+
+            }
+        } catch (IllegalArgumentException e) {
+            throw new ConfigException(CONFIG_VALUE_ERROR, e);
+        }
+
+        return devicesAddresses;
+    }
+
+}