let the XOS IP and port configurable

Change-Id: Iaeb0ac72408e145a39979266d45d8255970e8069

@@ -29,18 +29,26 @@ import com.sun.jersey.api.client.WebResource;
 
 import java.io.IOException;
 
+import org.onlab.packet.IpAddress;
 import org.slf4j.Logger;
 
 public class RestClient {
     private final Logger log = getLogger(getClass());
-    private final String hostName = "10.254.1.22";
-    private final int xosServerPort = 8000;
     private static final String UTF_8 = JSON_UTF_8.toString();
     private static final ObjectMapper MAPPER = new ObjectMapper();
-    private final String url = "http://" + hostName + ":" + xosServerPort
-            + "/xoslib/rs/vbng_mapping/";
+    private final String url;
 
     /**
+     * Constructor.
+     *
+     * @param xosServerIpAddress the IP address of the XOS server
+     * @param xosServerPort the port for the REST service on XOS server
+     */
+    RestClient(IpAddress xosServerIpAddress, int xosServerPort) {
+        this.url = "http://" + xosServerIpAddress.toString() + ":"
+                + xosServerPort + "/xoslib/rs/vbng_mapping/";
+    }
+    /**
      * Gets a client web resource builder.
      *
      * @param url the URL to access remote resource

@@ -34,6 +34,8 @@ public final class VbngConfiguration {
     private final List<IpPrefix> localPublicIpPrefixes;
     private final IpAddress nextHopIpAddress;
     private final MacAddress publicFacingMac;
+    private final IpAddress xosIpAddress;
+    private final int xosRestPort;
 
     /**
      * Default constructor.
@@ -42,6 +44,8 @@ public final class VbngConfiguration {
         localPublicIpPrefixes = null;
         nextHopIpAddress = null;
         publicFacingMac = null;
+        xosIpAddress = null;
+        xosRestPort = 0;
     }
 
     /**
@@ -51,6 +55,8 @@ public final class VbngConfiguration {
      * @param prefixes the public IP prefix list for local SDN network
      * @param publicFacingMac the MAC address configured for all local
      *        public IP addresses
+     * @param xosIpAddress the XOS server IP address
+     * @param xosRestPort the port of the XOS server for REST
      */
     @JsonCreator
     public VbngConfiguration(@JsonProperty("localPublicIpPrefixes")
@@ -58,10 +64,16 @@ public final class VbngConfiguration {
                              @JsonProperty("nextHopIpAddress")
                              IpAddress nextHopIpAddress,
                              @JsonProperty("publicFacingMac")
-                             MacAddress publicFacingMac) {
+                             MacAddress publicFacingMac,
+                             @JsonProperty("xosIpAddress")
+                             IpAddress xosIpAddress,
+                             @JsonProperty("xosRestPort")
+                             int xosRestPort) {
         localPublicIpPrefixes = prefixes;
         this.nextHopIpAddress = nextHopIpAddress;
         this.publicFacingMac = publicFacingMac;
+        this.xosIpAddress = xosIpAddress;
+        this.xosRestPort = xosRestPort;
     }
 
     /**
@@ -90,4 +102,22 @@ public final class VbngConfiguration {
     public MacAddress getPublicFacingMac() {
         return publicFacingMac;
     }
+
+    /**
+     * Gets the IP address configured for XOS server.
+     *
+     * @return the IP address configured for the XOS server
+     */
+    public IpAddress getXosIpAddress() {
+        return xosIpAddress;
+    }
+
+    /**
+     * Gets the REST communication port configured for XOS server.
+     *
+     * @return the REST communication port configured for XOS server
+     */
+    public int getXosRestPort() {
+        return xosRestPort;
+    }
 }

@@ -61,6 +61,8 @@ public class VbngConfigurationManager implements VbngConfigurationService {
 
     private IpAddress nextHopIpAddress;
     private MacAddress macOfPublicIpAddresses;
+    private IpAddress xosIpAddress;
+    private int xosRestPort;
 
     @Activate
     public void activate() {
@@ -100,6 +102,8 @@ public class VbngConfigurationManager implements VbngConfigurationService {
             }
             nextHopIpAddress = config.getNextHopIpAddress();
             macOfPublicIpAddresses = config.getPublicFacingMac();
+            xosIpAddress = config.getXosIpAddress();
+            xosRestPort = config.getXosRestPort();
 
         } catch (FileNotFoundException e) {
             log.warn("Configuration file not found: {}", configFileName);
@@ -118,6 +122,16 @@ public class VbngConfigurationManager implements VbngConfigurationService {
         return macOfPublicIpAddresses;
     }
 
+    @Override
+    public IpAddress getXosIpAddress() {
+        return xosIpAddress;
+    }
+
+    @Override
+    public int getXosRestPort() {
+        return xosRestPort;
+    }
+
     // TODO handle the case: the number of public IP addresses is not enough
     // for 1:1 mapping from public IP to private IP.
     @Override

@@ -40,6 +40,20 @@ public interface VbngConfigurationService {
     MacAddress getPublicFacingMac();
 
     /**
+     * Gets the IP address configured for XOS server.
+     *
+     * @return the IP address configured for the XOS server
+     */
+    IpAddress getXosIpAddress();
+
+    /**
+     * Gets the REST communication port configured for XOS server.
+     *
+     * @return the REST communication port configured for XOS server
+     */
+    int getXosRestPort();
+
+    /**
      * Evaluates whether an IP address is an assigned public IP address.
      *
      * @param ipAddress the IP address to evaluate

@@ -136,7 +136,9 @@ public class VbngManager implements VbngService {
      */
     private void statusRecovery() {
         log.info("vBNG starts to recover from XOS record......");
-        RestClient restClient = new RestClient();
+        RestClient restClient =
+                new RestClient(vbngConfigurationService.getXosIpAddress(),
+                               vbngConfigurationService.getXosRestPort());
         ObjectNode map = restClient.getRest();
         if (map == null) {
             log.info("Stop to recover vBNG status due to the vBNG map "