[OH-Dev] [issue773] Some oh-bugimporters importer is generating ParsedBug objects with no _tracker_name value

[Asheesh Laroia]

New submission from Asheesh Laroia <asheesh at asheesh.org>:

I am running "python import_bugimporter_data /tmp/results.jsonlines".

What I expect is that it should import JSON data from the file specified without 
printing any warnings.

What I'm seeing instead is this error:

  File "/home/deploy/milestone-a/mysite/customs/management/commands/import_bugi
mporter_data.py", line 49, in handle
    mysite.customs.core_bugimporters.import_one_bug_item(bug_dict)
  File "/home/deploy/milestone-a/mysite/customs/core_bugimporters.py", line 79,
 in import_one_bug_item
    tracker_name=d['_tracker_name'])
KeyError: '_tracker_name'

I believe we should adjust oh-bugimporters so that it refuses to export any 
ParsedBug item that doesn't have a _tracker_name value.

(My guess for the root cause here is that there's probably a bug in one of the 
bugimporter classes where it's not filling in the _tracker_name value.)

We can possibly do this with the help of an undocumented property of the scrapy 
Field class: "required". You can see that here: 
http://pydoc.net/s01.scrapy/0.12.3/s01.scrapy.fieldproperty

An alternative is to add some of our own machinery that insists ParsedBug has 
this field set to a value.

----------
messages: 3430
nosy: paulproteus
priority: bug
status: unread
title: Some oh-bugimporters importer is generating ParsedBug objects with no _tracker_name value

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