Re: [Xen-API] Simple Java API example

[Christian Smith - Sun Microsystems - Dublin Ireland <Christian.Smith@xxxxxxx>]

Hi Stefan,

I have gotten you example to list the UUID's of all VM's successfully 
but im having issues trying to get information on specific VM's.  Im 
sure its something im overlooking but when I run the code below I get 
the following errors returned:
EPERMDENIED
Session Invalid

My code is below.  Thanks for your help.
-Christian



package rpcexample;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;

public class RPCExample {
   private static XmlRpcClientConfigImpl config;
   private static XmlRpcClient client;
  
   /**
    * @param args
    */
   public static void main(String[] args) {
       URL url = null;
       try {
           url = new URL("http://my-ip:9363";);
       } catch (MalformedURLException e) {
           System.out.println("Malformed URL?");
           System.exit(-1);
       }
       config = new XmlRpcClientConfigImpl();
       config.setServerURL(url);
       client = new XmlRpcClient();
       client.setConfig(config);
       String username = "any";
       String password = "any";
       Object[] params = new Object[]{username, password};
       HashMap<String, String> result = null;
       try {
           result = (HashMap) 
client.execute("session.login_with_password", params);
       } catch (XmlRpcException e) {
           System.out.println("Could not open session");
           System.exit(-1);
       }
       String status = result.get("Status");
       if (status.compareTo("Success") == 0) {
           String uuid = result.get("Value");
           params = new Object[]{uuid};
           try {
               result = (HashMap) client.execute("VM.get_all", params);
           } catch (XmlRpcException e) {
               System.out.println("Could not get VMs' UUIDs");
               System.exit(-1);
           }
           Object res = result.get("Value");
           if (res.getClass() == Object[].class) {
               Object[] arr = (Object[])res;
               int i;
               for (i = 0; i < arr.length; i++) {
                   //System.out.println("VM UUID: " +(String)arr[i]);
                   vm(arr[i]);
               }
           }
       }
      
   }
  
   public static void vm(Object vm){
       Object[] params;
       HashMap<String, String> result = null;

       System.out.println("UUID: " + (String)vm);
       params = new Object[]{vm};
       try {
           result = (HashMap)client.execute("VM.get_memory_actual", 
params);
           String status = result.get("Status");
           if(status.compareTo("Failure") == 0){
               Object res = result.get("ErrorDescription");
               if( res.getClass() == Object[].class ){
                   Object[] arr = (Object[])res;
                   for(int i = 0; i < arr.length; i++){
                       System.out.println("\tDescrip: " + (String)arr[i]);
                   }
               }
           }else {
               System.out.println("\tResult: " + result);
           }
       } catch (XmlRpcException ex) {
           System.out.println("Could not get actual memory!");
       }
   }
}


Stefan Berger wrote:
> *This program should show all VMs' UUIDs.*
>
> *I added the line*
>
> *(xen-api-server (( 0.0.0.0:9363 none )))*
>
> *to /etc/xen/xend-config.sxp before starting xend.*
>
> *   Stefan*
>
>
> *package* test;
>
> *import* java.net.MalformedURLException;
> *import* java.net.URL;
> *import* java.util.HashMap;
> *import* org.apache.xmlrpc.XmlRpcException;
> *import* org.apache.xmlrpc.client.XmlRpcClient;
> *import* org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
>
> *public* *class* Test {
>         *private* *static* XmlRpcClientConfigImpl /config/;
>         *private* *static* XmlRpcClient /client/;        
>
>         /**
>          * *@param* args
>          */
>         *public* *static* *void* main(String[] args) {
>                 URL url = *null*;
>                 *try* {
>                         url = *new* 
> URL("http://your.xen.machine.ip.address:9363";);
>                 } *catch* (MalformedURLException e) {
>                         System./out/.println("Malformed URL?");
>                         System./exit/(-1);
>                 }
>                 /config/ = *new* XmlRpcClientConfigImpl();
>             /config/.setServerURL(url);
>             /client/ = *new* XmlRpcClient();
>             /client/.setConfig(/config/);
>             String username = "any";
>             String password = "any";
>             Object[] params = *new* Object[]{username, password};
>                 HashMap<String, String> result = *null*;
>                 *try* {
>                         result = (HashMap) 
> /client/.execute("session.login_with_password", params);
>                 } *catch* (XmlRpcException e) {
>                         System./out/.println("Could not open session");
>                         System./exit/(-1);
>                 }
>                 String status = result.get("Status");
>                 *if* (status.compareTo("Success") == 0) {
>                         String uuid = result.get("Value");
>                     params = *new* Object[]{uuid};
>                         *try* {
>                                 result = (HashMap) 
> /client/.execute("VM.get_all", params);
>                         } *catch* (XmlRpcException e) {
>                                 System./out/.println("Could not get 
> VMs' UUIDs");
>                                 System./exit/(-1);
>                         }
>                         Object res = result.get("Value");
>                         *if* (res.getClass() == Object[].*class*) {
>                                 Object[] arr = (Object[])res;
>                                 *int* i;
>                                 *for* (i = 0; i < arr.length; i++) {
>                                         System./out/.println("VM UUID: 
> " +(String)arr[i]);
>                                 }
>                         }
>                        
>                 }
>         }
> }
>
> xen-api-bounces@xxxxxxxxxxxxxxxxxxx wrote on 04/05/2007 08:10:10 AM:
>
> > Hi All,
> >
> > I am trying to talk to the Xen API with Java and
> > 'org.apache.xmlrpc.client.XmlRpcClient' (version 3).  I was 
> wondering if
> > someone could give me a very short example of connecting to the server
> > and getting a list of VM's?  I have never used XML-RPC before and the
> > tutorials ive found dont seem to apply to this version of the xmlrpc 
> api.
> >
> > Thanks in advance,
> > Christian
> >
> > _______________________________________________
> > xen-api mailing list
> > xen-api@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api
> ------------------------------------------------------------------------
>
> _______________________________________________
> xen-api mailing list
> xen-api@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-api
>   

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