Re: [Xen-API] Java XML RPC with Xen-API?

[Stefan Berger <stefanb@xxxxxxxxxx>]

Ewan Mellor <ewan@xxxxxxxxxxxxx> wrote on 04/02/2007
05:40:26 PM:

> On Mon, Apr 02, 2007 at 03:37:17PM -0400, Stefan Berger wrote:
> 
> > Evan Bigall <evan.bigall@xxxxxxxxxxx> wrote on 04/02/2007
01:50:40 PM:
> > 
> > > My "execute" method returns result.get("Value"),
you should then be able
> > > to cast that into a java Set, and iterate through all the
key/value
> > pairs.
> > 
> > I would hope so, too, but it results in a ClassCastException.
Which XML
> > RPC library are you using and what version?
> 
> Glancing through the Apache XML-RPC library, version 3, it looks 
> like you should
> either be able to cast that to either an Object [], or failing that,
a
> List.  Xen-API's Sets are marshalled as XML-RPC <array>s
on the wire, and
> it's up to the client library how to interpret that.
> 
> If you call getClass() on the result, you can see what it's giving
you
> back.
> 

Here is what is coming back:

This first one is for estblishing the session -- works

-->{Status=Success, Value=7f0a5d0b-c0ff-f948-36e5-cbad03caf24c}
UUID: 7f0a5d0b-c0ff-f948-36e5-cbad03caf24c


The VM.get_all returns a 'Set' -- only
an Object comes back

Calling VM.get_all(7f0a5d0b-c0ff-f948-36e5-cbad03caf24c,...)
Returned object = {Status=Success,
Value=[Ljava.lang.Object;@1faba46}
'Value' has type class [Ljava.lang.Object;

A Map is returned from VM.get_record():

Calling VM.get_record(7f0a5d0b-c0ff-f948-36e5-cbad03caf24c,...)
Returned object = {Status=Success,
Value={actions_after_suspend=restart, user_version=1, domid=0, memory_static_max=17592186040320,
memory_dynamic_min=1048576000, is_control_domain=true, actions_after_shutdown=destroy,
resident_on=1e86bcf9-3ddb-406a-4a31-702944839f28, memory_dynamic_max=1048576000,
PV_ramdisk=, security_label=sHype:xm-test:SystemManagement, PV_args=, uuid=00000000-0000-0000-0000-000000000000,
name_label=Domain-0, PV_kernel=, actions_after_crash=restart, VCPUs_at_startup=4,
memory_static_min=0, other_config={}, name_description=Domain-0, PV_bootloader=,
auto_power_on=false, consoles=[Ljava.lang.Object;@3570b0, VIFs=[Ljava.lang.Object;@79717e,
platform={}, VBDs=[Ljava.lang.Object;@10a2d64, PV_bootloader_args=, metrics=2714b0e7-45b2-8ed3-31db-a31c8237750e,
VTPMs=[Ljava.lang.Object;@12a3722, actions_after_reboot=restart, HVM_boot_policy=,
tools_version={}, VCPUs_params={cap=0, weight=256}, is_a_template=false,
PCI_bus=, HVM_boot_params={}, power_state=Running, VCPUs_max=4}}
'Value' has type class java.util.HashMap


A set comes back here:

Calling VM.get_by_name_label(7f0a5d0b-c0ff-f948-36e5-cbad03caf24c,...)
Returned object = {Status=Success,
Value=[Ljava.lang.Object;@cfec48}
'Value' has type class [Ljava.lang.Object;


Neither with the normal TranportFactory nor the XmlRpcCommonsTransportFactory
(which pulls in an amazing amount of other jars) could I get a better result
type...

  Stefan

> Ewan.
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