def merge_groups(
from_object_ids=None,
to_object_id=None,
transaction_id=None,
recursed=False,
eventstream_state=None,
**kwargs
):
# TODO(mattrobenolt): Write tests for all of this
from sentry.models import (
Activity,
Group,
GroupAssignee,
GroupEnvironment,
GroupHash,
GroupRuleStatus,
GroupSubscription,
Environment,
EventAttachment,
UserReport,
GroupRedirect,
GroupMeta,
get_group_with_redirect,
)
if not (from_object_ids and to_object_id):
logger.error("group.malformed.missing_params", extra={"transaction_id": transaction_id})
return False
# Operate on one "from" group per task iteration. The task is recursed
# until each group has been merged.
from_object_id = from_object_ids[0]
try:
new_group, _ = get_group_with_redirect(to_object_id)
except Group.DoesNotExist:
logger.warn(
"group.malformed.invalid_id",
extra={"transaction_id": transaction_id, "old_object_ids": from_object_ids},
)
return False
if not recursed:
logger.info(
"merge.queued",
extra={
"transaction_id": transaction_id,
"new_group_id": new_group.id,
"old_group_ids": from_object_ids,
# TODO(jtcunning): figure out why these are full seq scans and/or alternative solution
# 'new_event_id': getattr(new_group.event_set.order_by('-id').first(), 'id', None),
# 'old_event_id': getattr(group.event_set.order_by('-id').first(), 'id', None),
# 'new_hash_id': getattr(new_group.grouphash_set.order_by('-id').first(), 'id', None),
# 'old_hash_id': getattr(group.grouphash_set.order_by('-id').first(), 'id', None),
},
)
try:
group = Group.objects.select_related("project").get(id=from_object_id)
except Group.DoesNotExist:
from_object_ids.remove(from_object_id)
logger.warn(
"group.malformed.invalid_id",
extra={"transaction_id": transaction_id, "old_object_id": from_object_id},
)
else:
model_list = tuple(EXTRA_MERGE_MODELS) + (
Activity,
GroupAssignee,
GroupEnvironment,
GroupHash,
GroupRuleStatus,
GroupSubscription,
EventAttachment,
UserReport,
GroupRedirect,
GroupMeta,
)
has_more = merge_objects(
model_list, group, new_group, logger=logger, transaction_id=transaction_id
)
if not has_more:
# There are no more objects to merge for *this* "from" group, remove it
# from the list of "from" groups that are being merged, and finish the
# work for this group.
from_object_ids.remove(from_object_id)
features.merge(new_group, [group], allow_unsafe=True)
environment_ids = list(
Environment.objects.filter(projects=group.project).values_list("id", flat=True)
)
for model in [tsdb.models.group]:
tsdb.merge(
model,
new_group.id,
[group.id],
environment_ids=environment_ids
if model in tsdb.models_with_environment_support
else None,
)
for model in [tsdb.models.users_affected_by_group]:
tsdb.merge_distinct_counts(
model,
new_group.id,
[group.id],
environment_ids=environment_ids
if model in tsdb.models_with_environment_support
else None,
)
for model in [
tsdb.models.frequent_releases_by_group,
tsdb.models.frequent_environments_by_group,
]:
tsdb.merge_frequencies(
model,
new_group.id,
[group.id],
environment_ids=environment_ids
if model in tsdb.models_with_environment_support
else None,
)
previous_group_id = group.id
with transaction.atomic():
GroupRedirect.create_for_group(group, new_group)
group.delete()
delete_logger.info(
"object.delete.executed",
extra={
"object_id": previous_group_id,
"transaction_id": transaction_id,
"model": Group.__name__,
},
)
new_group.update(
# TODO(dcramer): ideally these would be SQL clauses
first_seen=min(group.first_seen, new_group.first_seen),
last_seen=max(group.last_seen, new_group.last_seen),
)
try:
# it's possible to hit an out of range value for counters
new_group.update(
times_seen=F("times_seen") + group.times_seen,
num_comments=F("num_comments") + group.num_comments,
)
except DataError:
pass
if from_object_ids:
# This task is recursed until `from_object_ids` is empty and all
# "from" groups have merged into the `to_group_id`.
merge_groups.delay(
from_object_ids=from_object_ids,
to_object_id=to_object_id,
transaction_id=transaction_id,
recursed=True,
eventstream_state=eventstream_state,
)
elif eventstream_state:
# All `from_object_ids` have been merged!
eventstream.end_merge(eventstream_state)