Support for HTTP Patch in URLFetch

[Sean Murphy]

Hi,

Issue for GAE-python.

I'm doing some work using the Salesforce REST API. This API uses the HTTP Patch

command to update an object in SF. I note that URLFetch currently does not support

Patch - any plans to support in future?

I think the solution is to use httplib2 - it's a bit clunky, however.

Thoughts/comments appreciated.

BR,

Seán.

[Nick Johnson]

On Fri, Sep 23, 2011 at 8:46 PM, Sean Murphy <seanm5...@gmail.com> wrote:

Hi,

Issue for GAE-python.

You should probably send this to google-appengine-python@ instead, then.

 

I'm doing some work using the Salesforce REST API. This API uses the HTTP Patch

command to update an object in SF. I note that URLFetch currently does not support

Patch - any plans to support in future?

PATCH is actually a part of WebDav, not HTTP. If you'd like support for it added to urlfetch, you should file a feature request on the issue tracker.

 

I think the solution is to use httplib2 - it's a bit clunky, however.

Unfortunately, I don't believe this will work - httplib is just a wrapper for URLFetch, so any restrictions that apply to URLFetch apply equally to httplib(2).

-Nick Johnson

 

Thoughts/comments appreciated.

BR,

Seán.

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Nick Johnson, Developer Programs Engineer, App Engine

[Sean Murphy]

Hi Nick,

You should probably send this to google-appengine-python@ instead, then.

Thanks - given that I've start this here, I'll finish it here. (I did look for the appengine

python list, but could not find it easily - could I suggest that a pointer to the group be

put in the welcome and readme for this group?)

 

I'm doing some work using the Salesforce REST API. This API uses the HTTP Patch

command to update an object in SF. I note that URLFetch currently does not support

Patch - any plans to support in future?

PATCH is actually a part of WebDav, not HTTP. If you'd like support for it added to urlfetch, you should file a feature request on the issue tracker.

 

I'm a little confused - Salesforce does refer to it as a HTTP command and this RFC

http://tools.ietf.org/html/rfc5789

does give the impression that it is part of HTTP rather than Webdav. Any chance you'd

be able to shed further light on this?

 

I think the solution is to use httplib2 - it's a bit clunky, however.

Unfortunately, I don't believe this will work - httplib is just a wrapper for URLFetch, so any restrictions that apply to URLFetch apply equally to httplib(2).

This can work using the following (which I got from some SF examples):

    queryConn = httplib2.Http()

    resp,content = queryConn.request( obj_url+'?_HttpMethod=PATCH',

                                      "POST",

                                      headers= {'Authorization': 'OAuth '+access_token, 'Content-Type':' application/json'},

                                      body=simplejson.dumps(update_fields) )

I have not looked into what happens under the hood, however...

BR,

Seán.

[Nick Johnson]

On Mon, Sep 26, 2011 at 7:57 PM, Sean Murphy <seanm5...@gmail.com> wrote:

Hi Nick,

You should probably send this to google-appengine-python@ instead, then.

Thanks - given that I've start this here, I'll finish it here. (I did look for the appengine

python list, but could not find it easily - could I suggest that a pointer to the group be

put in the welcome and readme for this group?)

 

I'm doing some work using the Salesforce REST API. This API uses the HTTP Patch

command to update an object in SF. I note that URLFetch currently does not support

Patch - any plans to support in future?

PATCH is actually a part of WebDav, not HTTP. If you'd like support for it added to urlfetch, you should file a feature request on the issue tracker.

 

I'm a little confused - Salesforce does refer to it as a HTTP command and this RFC

http://tools.ietf.org/html/rfc5789

does give the impression that it is part of HTTP rather than Webdav. Any chance you'd

be able to shed further light on this?

You're right - it's not part of webdav specifically. That RFC extends HTTP, though, so it's not a part of HTTP/1.1.

 

 

I think the solution is to use httplib2 - it's a bit clunky, however.

Unfortunately, I don't believe this will work - httplib is just a wrapper for URLFetch, so any restrictions that apply to URLFetch apply equally to httplib(2).

This can work using the following (which I got from some SF examples):

    queryConn = httplib2.Http()

    resp,content = queryConn.request( obj_url+'?_HttpMethod=PATCH',

                                      "POST",

                                      headers= {'Authorization': 'OAuth '+access_token, 'Content-Type':' application/json'},

                                      body=simplejson.dumps(update_fields) )

I have not looked into what happens under the hood, however...

All this is doing is making a POST request, specifying a query string parameter '_HttpMethod'. You can do this using urlfetch, urllib, or the mechanism of your choice.

-Nick Johnson

 

BR,

Seán.

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