When installing a clean runbot instance a bad query is made because
there is not any build yet.
With this commmit, the query is not made when there are no builds
directories found on the filesystem.
Instead of marking most fields as `copy=False` to be able to use the
copy method for rebuilds, we create the build explicitly. We also
forbid to copy builds as it doesn't make much sense to begin with.
As for duplicates, it wasn't always possible to rebuild them. The
rebuild now injects a specific context key (force_rebuild). This allows
duplicates to undergo a rebuild. The side-effect of writing on previous
builds is also removed[1].
[1]: it's not obvious from the diff but the porting to the V8 API
should have yielded
duplicate.write({'duplicate_id': build_id.id})
instead of
build_id.write({'duplicate_id': build_id.id})
Before this commit, the job_end was always None because of a time2str
function with no return. So the job_time was the same as the job age.
Also, the result and times were copied from the prvious build. Displayed
time and results were wrong.
The previous code of runbot and runbot_cla was made for Odoo API version
8.0. This commit makes it work with Odoo API 11.0 and Python 3.
Also, the present refactoring splits the code into multiple files to
make it easier to read (I hope).
The main change due to Python 3 is the job locking mechanism:
Since PEP-446 file descriptors are non-inheritable by default.
A new method (os.set_inheritable) was introduced to explicitely make
fd inheritable. Also, the close_fds parameter of the subprocess.Popen
method is now True by default.
Finally, PEP-3151 changed the exception raised by fcntl.flock from IOError to OSError
(and IOError became an alias of OSError).
As a consequence of all that, the runbot locking mechanism to check if a
job is finished was not working in python3.
