[COUCHDB-1508] Unable to json_encode the new ddoc_updated event

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2
• Fix Version/s: 1.2.1, 1.3
• Assignee: Robert Newson
• Reporter: Antonino Murador
• Created: 02/Jul/12 16:25
• Updated: 04/Jul/12 10:37
• Resolved: 04/Jul/12 09:52

Description

I notice a behaviour of the update_notification process that I cannot
understand.
I setup CouchDB to send update notifications to an external process in my
local.d/example.ini:

[update_notification]
example = /usr/local/bin/example.py

The script example.py keeps reading lines from stdin and simply logs.
Everything seems to work fine when a normal document is
created/modified/deleted
in a db; the scripts receives the expected notification line:

{"type":"updated","db":"example_db"}

The problem arises when a DESIGN document gets modified in example_db. In
this
case the script is relaunched and I notice the following in CouchDB logs:

[Mon, 02 Jul 2012 12:03:32 GMT] [info] [<0.127.0>] 10.0.1.18 - - PUT
/example_db/_design/status 201
[Mon, 02 Jul 2012 12:03:32 GMT] [debug] [<0.96.0>] OS Process #Port<0.1894>
Input ::

{"type":"updated","db":"example_db"}

[Mon, 02 Jul 2012 12:03:32 GMT] [error] [<0.96.0>] Failed sending data:
{[

{type,<<"ddoc_updated">>}

,
{db,
{<<"example_db">>,
<<"_design/status">>}}]} ->
{json_encode,

{bad_term,

{<<"example_db">>, <<"_design/status">>}

}}
[Mon, 02 Jul 2012 12:03:32 GMT] [error] [<0.88.0>] Update notification
process
<0.96.0> died: normal
[Mon, 02 Jul 2012 12:03:32 GMT] [debug] [<0.127.0>] 'GET'
/_utils/document.html?example_db/_design/status

{1, 1}

from "10.0.1.18"
Headers:
[

{'Accept',"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"}

,

{'Accept-Encoding',"gzip, deflate"}

,

{'Accept-Language',"en-us,en;q=0.5"}

,

{'Connection',"keep-alive"}

,

{'Cookie',"5984_recent=example_db"}

,

{'Host',"localhost:5984"}

,

{'If-Modified-Since',"Fri, 29 Jun 2012 14:39:40 GMT"}

,

{'Referer'," http://localhost:5984/_utils/document.html?example_db/_design/status"}

,

{'User-Agent',"Mozilla/5.0 (X11; Linux i686; rv:10.0.5) Gecko/20100101 Firefox/10.0.5 Iceweasel/10.0.5"}

]
[Mon, 02 Jul 2012 12:03:32 GMT] [error] [<0.94.0>] {error_report,<0.31.0>,
{<0.94.0>,supervisor_report,
[{supervisor,{local,couch_db_update_notifier_sup}},

{errorContext,child_terminated}

,

{reason,normal}

,
{offender,
[

{pid,<0.95.0>}

,

{name,"example"}

,
{mfargs,
{couch_db_update_notifier,start_link,
["/usr/local/bin/example.py"]}},

{restart_type,permanent}

,

{shutdown,1000}

,

{child_type,supervisor}

]}]}}

Can anyone explain me what is going wrong?

I am using CouchDB 1.2.0

Thanks in advance,
Antonino