construct command as a list, not a string
switch from os.popen() to subprocess.Popen()

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

avoid status computation if master is idle

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Returns number of seconds before the slave should retry the section
or 0 if not known to be idle. Skew the idle time a bit to avoid
multiple slaves connecting at the same time.

Should be issued after "recycle" and log submission commands,
but before "reserve" or "status".

Allows to skip expensive package database initialization
(downloading and parsing Packages, computing package states).

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

returns most recent modification time of a subdirectory

this will be used to clear a remembered idle state as any log
modification (submission, deletion, ...) will update the mtime

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

distinguish between "regular" idle and "recycle" idle

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

will be used for creating timestamp files

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

delete the log from recycle/ if no other copy of the log is left

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

link the log files to be recycled to recycle/ instead of deleting them

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

needs to be issued before "reserve" or "status"

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

if in recycle mode and the selected package has a log in recycle/:
  delete all logs for this package
if not in recycle mode, but the selected package has a log in recycle/:
  clear the recycle request as the package will be processed
  (the regular log was probably deleted manually)

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

In recycle mode treat packages with a logfile in recycle/ as "unknown"
and compute whether they may be tested (if all depends are satisfied).

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

logfiles to be recycled should be hardlinked into recycle/

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

do the lookup part only once and lookup all packages
before resolving more complicated states

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

so other slaves can continue the unfinished work

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

if the slave is interrupted gracefully with a single Ctrl-C
to terminate after finishing the current test, also submit
the finished logs

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

set to text/plain for the logfiles

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Use restore_selections instead of purge_packages() for the
--install-purge-install test. purge_packages() fails miserably on
packages with circular dependencies and on transitively essential
packages that are already installed the base chroot. Purging
works fine, but in the end there are various amounts of spuriously
added, removed, or modified files.

--install-purge-install does not work well on these two groups of
packages, same as --warn-on-others. See #682744.

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

skip world writable sockets

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

contains valuable data: user mailboxes (#682184)

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Fetching and parsing the Packages file is slow and only needed
for computing status and reserving packages.
Submitting logs works fine (and much faster) without.

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>

Signed-off-by: Andreas Beckmann <debian@abeckmann.de>