Refactor vpp-japi

vlib does not allow concurrent connections, hence make sure the Java API
does not allow the user to instantiate them.

Also hide native methods from direct user invocation behind defensive
methods also detect if a particular connection has been terminated.
Disconnect is hidden befind standard close() method, as specified by
AutoCloseable.

Change-Id: Ib5079200ae4216cad84358a2174a41e90271a30b
Signed-off-by: Robert Varga <nite@hq.sk>

2 files changed, 7 insertions, 14 deletions

diff --git a/vpp-japi/japi/test/demo.java b/vpp-japi/japi/test/demo.java
index ef419d70..ea1db84b 100644
--- a/vpp-japi/japi/test/demo.java
+++ b/vpp-japi/japi/test/demo.java
@@ -15,9 +15,11 @@
 
 import org.openvpp.vppjapi.*;
 
-public class demo extends vppApi {
+public class demo {
     public static void main (String[] args) throws Exception {
-        vppApi api = new vppApi ();
+        vppApi api = new vppApi ("JavaTest");
+        System.out.printf ("Connected OK...");
+
         String intlist;
         int [] contexts;
         int i, limit;
@@ -25,15 +27,6 @@ public class demo extends vppApi {
         int rv, errors, saved_error;
         long before, after;
 
-        rv = api.clientConnect ("JavaTest");
-        if (rv == 0)
-            System.out.printf ("Connected OK...");
-        else
-        {
-            System.out.printf ("clientConnect returned %d\n", rv);
-            System.exit (1);
-        }
-
         if (false)
         {
             intlist = api.getInterfaceList ("");
@@ -171,7 +164,7 @@ public class demo extends vppApi {
                            limit, after - before, 
                            limit / (after - before));
 
-        api.clientDisconnect();
+        api.close();
         System.out.printf ("Done...\n");
     }
 }
diff --git a/vpp-japi/japi/test/vppApi.java b/vpp-japi/japi/test/vppApi.java
index 96ba4a27..87af3292 100644
--- a/vpp-japi/japi/test/vppApi.java
+++ b/vpp-japi/japi/test/vppApi.java
@@ -16,13 +16,13 @@
 import java.net.InetAddress;
 import org.openvpp.vppjapi.*;
 
-public class vppApi extends vppConn {
+public class vppApi {
 
     native int controlPing();
     native void test (byte[] array, byte[] array2);
 
     public static void main (String[] args) throws Exception {
-        vppApi api = new vppApi ();
+        vppConn api = new vppConn ();
         String ipv6 = "db01::feed";
         String ipv4 = "192.168.1.1";
         InetAddress addr6 = InetAddress.getByName(ipv6);