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[IMP] runbot: always keep one empty slot when assigning sheduled

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Nightly build have a low priority but once they have a slot, they keep it.
When pushing a branch or asking robodoo to nicelly merge a branch for the
third time at 22:00, there may be no slot left since all the nightly build are created.

This commit will only assign scheduled build if there is no other build to create and
will always keep a free slot for other builds.
This commit is contained in:
Xavier-Do 2019-06-13 10:51:20 +02:00 committed by XavierDo
parent 86ffeac589
commit bdc6506ede
1 changed files with 36 additions and 24 deletions
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60
runbot/models/repo.py
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@ -370,32 +370,44 @@ class runbot_repo(models.Model):
if available_slots > 0:
if assignable_slots > 0: # note: slots have been addapt to be able to force host on pending build. Normally there is no pending with host.
# commit transaction to reduce the critical section duration
self.env.cr.commit()
# self-assign to be sure that another runbot instance cannot self assign the same builds
query = """UPDATE
runbot_build
SET
host = %(host)s
WHERE
runbot_build.id IN (
SELECT
runbot_build.id
FROM
runbot_build
LEFT JOIN runbot_branch ON runbot_branch.id = runbot_build.branch_id
def allocate_builds(where_clause, limit):
self.env.cr.commit()
# self-assign to be sure that another runbot instance cannot self assign the same builds
query = """UPDATE
runbot_build
SET
host = %%(host)s
WHERE
runbot_build.repo_id IN %(repo_ids)s
AND runbot_build.local_state = 'pending'
AND runbot_build.host IS NULL
ORDER BY
runbot_branch.sticky DESC,
runbot_branch.priority DESC,
array_position(array['normal','rebuild','indirect','scheduled']::varchar[], runbot_build.build_type) ASC,
runbot_build.sequence ASC
FOR UPDATE OF runbot_build SKIP LOCKED
LIMIT %(assignable_slots)s)"""
runbot_build.id IN (
SELECT runbot_build.id
FROM runbot_build
LEFT JOIN runbot_branch
ON runbot_branch.id = runbot_build.branch_id
WHERE
runbot_build.repo_id IN %%(repo_ids)s
AND runbot_build.local_state = 'pending'
AND runbot_build.host IS NULL
%s
ORDER BY
array_position(array['normal','rebuild','indirect','scheduled']::varchar[], runbot_build.build_type) ASC,
runbot_branch.sticky DESC,
runbot_branch.priority DESC,
runbot_build.sequence ASC
FOR UPDATE OF runbot_build SKIP LOCKED
LIMIT %%(limit)s
)
RETURNING id""" % where_clause
self.env.cr.execute(query, {'repo_ids': tuple(ids), 'host': fqdn(), 'limit': limit})
return self.env.cr.fetchall()
allocated = allocate_builds("""AND runbot_build.build_type != 'scheduled'""", assignable_slots)
_logger.debug('Normal builds %s where allocated to runbot' % allocated)
weak_slot = assignable_slots - len(allocated) - 1
if weak_slot > 0:
allocated = allocate_builds('', weak_slot)
_logger.debug('Scheduled builds %s where allocated to runbot' % allocated)
self.env.cr.execute(query, {'repo_ids': tuple(ids), 'host': fqdn(), 'assignable_slots': assignable_slots})
pending_build = Build.search(domain_host + [('local_state', '=', 'pending')], limit=available_slots)
if pending_build:
pending_build._schedule()