Re: xend http interface

Re: xend http interface

[Evan Bigall]

Tried this on xen-users and got no responses, so I am trying here...

I am trying to use the xend http interface (yes, I know about 
http://wiki.xensource.com/xenwiki/XenApi, but this is for a quick demo 
this month).

When I open http://127.0.0.1:8000/xend/domain I get a page the just 
says: "/ xend / domain /" thats its, no list of the domains.

If I telnet to 127.0.0.1 8000 and do "GET /xend HTTP/1.1" I get a 500 
Internel server error.

Looking at xend-debug.log I see:

Traceback (most recent call last):
 File "//usr/lib/python/xen/web/httpserver.py", line 141, in process
   return self.render(resource)
 File "//usr/lib/python/xen/web/httpserver.py", line 188, in render
   self.resultErr(ex)
 File "//usr/lib/python/xen/web/httpserver.py", line 181, in render
   val = resource.render(self)
 File "//usr/lib/python/xen/web/resource.py", line 59, in render
   return meth(req)
 File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 138, in 
render_GET
   self._list(req, 'detail' in req.args and req.args['detail'] == ['1'])
 File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 149, in 
_list
   self.ls_domain(req, detail, False)
 File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 167, in 
ls_domain
   req.write(
AttributeError: XendDomainInfo instance has no attribute 'getSsidref'

This is xen 3.03 with a RHEL4U3 host.  I downloaded the source and built 
it from scratch.  Have I gone wrong somewhere?

Evan

Re: Re: xend http interface

[Ewan Mellor]

On Tue, Dec 12, 2006 at 09:40:48AM +0700, Evan Bigall wrote:

> Tried this on xen-users and got no responses, so I am trying here...
> 
> I am trying to use the xend http interface (yes, I know about 
> http://wiki.xensource.com/xenwiki/XenApi, but this is for a quick demo 
> this month).
> 
> When I open http://127.0.0.1:8000/xend/domain I get a page the just 
> says: "/ xend / domain /" thats its, no list of the domains.
> 
> If I telnet to 127.0.0.1 8000 and do "GET /xend HTTP/1.1" I get a 500 
> Internel server error.
> 
> Looking at xend-debug.log I see:
> 
> Traceback (most recent call last):
> File "//usr/lib/python/xen/web/httpserver.py", line 141, in process
>   return self.render(resource)
> File "//usr/lib/python/xen/web/httpserver.py", line 188, in render
>   self.resultErr(ex)
> File "//usr/lib/python/xen/web/httpserver.py", line 181, in render
>   val = resource.render(self)
> File "//usr/lib/python/xen/web/resource.py", line 59, in render
>   return meth(req)
> File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 138, in 
> render_GET
>   self._list(req, 'detail' in req.args and req.args['detail'] == ['1'])
> File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 149, in 
> _list
>   self.ls_domain(req, detail, False)
> File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 167, in 
> ls_domain
>   req.write(
> AttributeError: XendDomainInfo instance has no attribute 'getSsidref'
> 
> This is xen 3.03 with a RHEL4U3 host.  I downloaded the source and built 
> it from scratch.  Have I gone wrong somewhere?

This is a regression that I fixed this last week -- you need the
attached patch, which you ought to be able to apply singly, or you could
pull forward to the latest xen-unstable.

That said, this server is by far the worst of all your options for demo'ing Xen!
What are you trying to demo?  There are a plethora of Xen administration
interfaces, both web-based and not, open source and not, and I'm pretty
sure that any one of them is better than that HTTP interface.

Ewan.

Re: Re: xend http interface

[Ewan Mellor]

[-- Attachment #1: Type: text/plain, Size: 2249 bytes --]

On Tue, Dec 12, 2006 at 09:43:25AM +0000, Ewan Mellor wrote:

> On Tue, Dec 12, 2006 at 09:40:48AM +0700, Evan Bigall wrote:
> 
> > Tried this on xen-users and got no responses, so I am trying here...
> > 
> > I am trying to use the xend http interface (yes, I know about 
> > http://wiki.xensource.com/xenwiki/XenApi, but this is for a quick demo 
> > this month).
> > 
> > When I open http://127.0.0.1:8000/xend/domain I get a page the just 
> > says: "/ xend / domain /" thats its, no list of the domains.
> > 
> > If I telnet to 127.0.0.1 8000 and do "GET /xend HTTP/1.1" I get a 500 
> > Internel server error.
> > 
> > Looking at xend-debug.log I see:
> > 
> > Traceback (most recent call last):
> > File "//usr/lib/python/xen/web/httpserver.py", line 141, in process
> >   return self.render(resource)
> > File "//usr/lib/python/xen/web/httpserver.py", line 188, in render
> >   self.resultErr(ex)
> > File "//usr/lib/python/xen/web/httpserver.py", line 181, in render
> >   val = resource.render(self)
> > File "//usr/lib/python/xen/web/resource.py", line 59, in render
> >   return meth(req)
> > File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 138, in 
> > render_GET
> >   self._list(req, 'detail' in req.args and req.args['detail'] == ['1'])
> > File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 149, in 
> > _list
> >   self.ls_domain(req, detail, False)
> > File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 167, in 
> > ls_domain
> >   req.write(
> > AttributeError: XendDomainInfo instance has no attribute 'getSsidref'
> > 
> > This is xen 3.03 with a RHEL4U3 host.  I downloaded the source and built 
> > it from scratch.  Have I gone wrong somewhere?
> 
> This is a regression that I fixed this last week -- you need the
> attached patch, which you ought to be able to apply singly, or you could
> pull forward to the latest xen-unstable.
> 
> That said, this server is by far the worst of all your options for demo'ing Xen!
> What are you trying to demo?  There are a plethora of Xen administration
> interfaces, both web-based and not, open source and not, and I'm pretty
> sure that any one of them is better than that HTTP interface.

Attached patch actually attached this time ;-)

Ewan.

[-- Attachment #2: 12770 --]
[-- Type: text/plain, Size: 1144 bytes --]

# HG changeset patch
# User Ewan Mellor <ewan@xensource.com>
# Date 1165491904 0
# Node ID 5bf91da9797df82f228b674bcc551ff47c62c8f2
# Parent  8e035701b9ffa91caf95e01cd89579ebb1f6bd98
Remove broken call to XendDomainInfo.getSsidref(), fixing the obsolete HTTP
server.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

diff -r 8e035701b9ff -r 5bf91da9797d tools/python/xen/xend/server/SrvDomainDir.py
--- a/tools/python/xen/xend/server/SrvDomainDir.py	Thu Dec 07 11:45:00 2006 +0000
+++ b/tools/python/xen/xend/server/SrvDomainDir.py	Thu Dec 07 11:45:04 2006 +0000
@@ -165,10 +165,9 @@ class SrvDomainDir(SrvDir):
             req.write('<ul>')
             for d in domains:
                 req.write(
-                    '<li><a href="%s%s">Domain %s</a>: id = %s, memory = %d, '
-                    'ssidref = %d.'
+                    '<li><a href="%s%s">Domain %s</a>: id = %s, memory = %d'
                     % (url, d.getName(), d.getName(), d.getDomid(),
-                       d.getMemoryTarget(), d.getSsidref()))
+                       d.getMemoryTarget()))
                 req.write('</li>')
             req.write('</ul>')
 

[-- Attachment #3: Type: text/plain, Size: 138 bytes --]

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Re: Re: xend http interface

[Evan Bigall]

I won't be demo'ing the interface.  To integrate xen with our product I 
just need a very basic control interface where I can drive xen from an 
external (not dom0) interface. Given that I'm going to have to rewrite 
all this when the XenApi is stable I just want the simplest easiest to 
program thing for now.

Thanks for the quick response with the patch, I'll test it out today.
Evan
> That said, this server is by far the worst of all your options for demo'ing Xen!
> What are you trying to demo?  There are a plethora of Xen administration
> interfaces, both web-based and not, open source and not, and I'm pretty
> sure that any one of them is better than that HTTP interface.