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Merge pull request #155 from matrix-org/erikj/perf

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Bulk and batch retrieval of events.
This commit is contained in:
Erik Johnston 2015-05-21 14:54:40 +01:00
parent 291cba284b 27e4b45c06
commit a551c5dad7
13 changed files with 595 additions and 203 deletions
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6
synapse/federation/federation_client.py
View file

@ -222,7 +222,7 @@ class FederationClient(FederationBase):
for p in transaction_data["pdus"]
]
if pdu_list:
if pdu_list and pdu_list[0]:
pdu = pdu_list[0]
# Check signatures are correct.
@ -255,7 +255,7 @@ class FederationClient(FederationBase):
)
continue
if self._get_pdu_cache is not None:
if self._get_pdu_cache is not None and pdu:
self._get_pdu_cache[event_id] = pdu
defer.returnValue(pdu)
@ -561,7 +561,7 @@ class FederationClient(FederationBase):
res = yield defer.DeferredList(deferreds, consumeErrors=True)
for (result, val), (e_id, _) in zip(res, ordered_missing):
if result:
if result and val:
signed_events.append(val)
else:
failed_to_fetch.add(e_id)

2
synapse/storage/__init__.py
View file

@ -51,7 +51,7 @@ logger = logging.getLogger(__name__)
# Remember to update this number every time a change is made to database
# schema files, so the users will be informed on server restarts.
SCHEMA_VERSION = 18
SCHEMA_VERSION = 19
dir_path = os.path.abspath(os.path.dirname(__file__))

172
synapse/storage/_base.py
View file

@ -25,6 +25,7 @@ from util.id_generators import IdGenerator, StreamIdGenerator
from twisted.internet import defer
from collections import namedtuple, OrderedDict
import functools
import sys
import time
@ -45,7 +46,6 @@ sql_scheduling_timer = metrics.register_distribution("schedule_time")
sql_query_timer = metrics.register_distribution("query_time", labels=["verb"])
sql_txn_timer = metrics.register_distribution("transaction_time", labels=["desc"])
sql_getevents_timer = metrics.register_distribution("getEvents_time", labels=["desc"])
caches_by_name = {}
cache_counter = metrics.register_cache(
@ -298,6 +298,12 @@ class SQLBaseStore(object):
self._get_event_cache = Cache("*getEvent*", keylen=3, lru=True,
max_entries=hs.config.event_cache_size)
self._event_fetch_lock = threading.Condition()
self._event_fetch_list = []
self._event_fetch_ongoing = 0
self._pending_ds = []
self.database_engine = hs.database_engine
self._stream_id_gen = StreamIdGenerator()
@ -337,6 +343,75 @@ class SQLBaseStore(object):
self._clock.looping_call(loop, 10000)
def _new_transaction(self, conn, desc, after_callbacks, func, *args, **kwargs):
start = time.time() * 1000
txn_id = self._TXN_ID
# We don't really need these to be unique, so lets stop it from
# growing really large.
self._TXN_ID = (self._TXN_ID + 1) % (sys.maxint - 1)
name = "%s-%x" % (desc, txn_id, )
transaction_logger.debug("[TXN START] {%s}", name)
try:
i = 0
N = 5
while True:
try:
txn = conn.cursor()
txn = LoggingTransaction(
txn, name, self.database_engine, after_callbacks
)
r = func(txn, *args, **kwargs)
conn.commit()
return r
except self.database_engine.module.OperationalError as e:
# This can happen if the database disappears mid
# transaction.
logger.warn(
"[TXN OPERROR] {%s} %s %d/%d",
name, e, i, N
)
if i < N:
i += 1
try:
conn.rollback()
except self.database_engine.module.Error as e1:
logger.warn(
"[TXN EROLL] {%s} %s",
name, e1,
)
continue
raise
except self.database_engine.module.DatabaseError as e:
if self.database_engine.is_deadlock(e):
logger.warn("[TXN DEADLOCK] {%s} %d/%d", name, i, N)
if i < N:
i += 1
try:
conn.rollback()
except self.database_engine.module.Error as e1:
logger.warn(
"[TXN EROLL] {%s} %s",
name, e1,
)
continue
raise
except Exception as e:
logger.debug("[TXN FAIL] {%s} %s", name, e)
raise
finally:
end = time.time() * 1000
duration = end - start
transaction_logger.debug("[TXN END] {%s} %f", name, duration)
self._current_txn_total_time += duration
self._txn_perf_counters.update(desc, start, end)
sql_txn_timer.inc_by(duration, desc)
@defer.inlineCallbacks
def runInteraction(self, desc, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
@ -348,75 +423,16 @@ class SQLBaseStore(object):
def inner_func(conn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
start = time.time() * 1000
txn_id = self._TXN_ID
# We don't really need these to be unique, so lets stop it from
# growing really large.
self._TXN_ID = (self._TXN_ID + 1) % (sys.maxint - 1)
name = "%s-%x" % (desc, txn_id, )
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
transaction_logger.debug("[TXN START] {%s}", name)
try:
i = 0
N = 5
while True:
try:
txn = conn.cursor()
txn = LoggingTransaction(
txn, name, self.database_engine, after_callbacks
)
return func(txn, *args, **kwargs)
except self.database_engine.module.OperationalError as e:
# This can happen if the database disappears mid
# transaction.
logger.warn(
"[TXN OPERROR] {%s} %s %d/%d",
name, e, i, N
)
if i < N:
i += 1
try:
conn.rollback()
except self.database_engine.module.Error as e1:
logger.warn(
"[TXN EROLL] {%s} %s",
name, e1,
)
continue
except self.database_engine.module.DatabaseError as e:
if self.database_engine.is_deadlock(e):
logger.warn("[TXN DEADLOCK] {%s} %d/%d", name, i, N)
if i < N:
i += 1
try:
conn.rollback()
except self.database_engine.module.Error as e1:
logger.warn(
"[TXN EROLL] {%s} %s",
name, e1,
)
continue
raise
except Exception as e:
logger.debug("[TXN FAIL] {%s} %s", name, e)
raise
finally:
end = time.time() * 1000
duration = end - start
transaction_logger.debug("[TXN END] {%s} %f", name, duration)
self._current_txn_total_time += duration
self._txn_perf_counters.update(desc, start, end)
sql_txn_timer.inc_by(duration, desc)
return self._new_transaction(
conn, desc, after_callbacks, func, *args, **kwargs
)
result = yield preserve_context_over_fn(
self._db_pool.runWithConnection,
@ -427,6 +443,32 @@ class SQLBaseStore(object):
after_callback(*after_args)
defer.returnValue(result)
@defer.inlineCallbacks
def runWithConnection(self, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
current_context = LoggingContext.current_context()
start_time = time.time() * 1000
def inner_func(conn, *args, **kwargs):
with LoggingContext("runWithConnection") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
return func(conn, *args, **kwargs)
result = yield preserve_context_over_fn(
self._db_pool.runWithConnection,
inner_func, *args, **kwargs
)
defer.returnValue(result)
def cursor_to_dict(self, cursor):
"""Converts a SQL cursor into an list of dicts.

2
synapse/storage/engines/postgres.py
View file

@ -19,6 +19,8 @@ from ._base import IncorrectDatabaseSetup
class PostgresEngine(object):
single_threaded = False
def __init__(self, database_module):
self.module = database_module
self.module.extensions.register_type(self.module.extensions.UNICODE)

2
synapse/storage/engines/sqlite3.py
View file

@ -17,6 +17,8 @@ from synapse.storage import prepare_database, prepare_sqlite3_database
class Sqlite3Engine(object):
single_threaded = True
def __init__(self, database_module):
self.module = database_module

38
synapse/storage/event_federation.py
View file

@ -13,6 +13,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from ._base import SQLBaseStore, cached
from syutil.base64util import encode_base64
@ -33,16 +35,7 @@ class EventFederationStore(SQLBaseStore):
"""
def get_auth_chain(self, event_ids):
return self.runInteraction(
"get_auth_chain",
self._get_auth_chain_txn,
event_ids
)
def _get_auth_chain_txn(self, txn, event_ids):
results = self._get_auth_chain_ids_txn(txn, event_ids)
return self._get_events_txn(txn, results)
return self.get_auth_chain_ids(event_ids).addCallback(self._get_events)
def get_auth_chain_ids(self, event_ids):
return self.runInteraction(
@ -369,7 +362,7 @@ class EventFederationStore(SQLBaseStore):
return self.runInteraction(
"get_backfill_events",
self._get_backfill_events, room_id, event_list, limit
)
).addCallback(self._get_events)
def _get_backfill_events(self, txn, room_id, event_list, limit):
logger.debug(
@ -415,16 +408,26 @@ class EventFederationStore(SQLBaseStore):
front = new_front
event_results += new_front
return self._get_events_txn(txn, event_results)
return event_results
@defer.inlineCallbacks
def get_missing_events(self, room_id, earliest_events, latest_events,
limit, min_depth):
return self.runInteraction(
ids = yield self.runInteraction(
"get_missing_events",
self._get_missing_events,
room_id, earliest_events, latest_events, limit, min_depth
)
events = yield self._get_events(ids)
events = sorted(
[ev for ev in events if ev.depth >= min_depth],
key=lambda e: e.depth,
)
defer.returnValue(events[:limit])
def _get_missing_events(self, txn, room_id, earliest_events, latest_events,
limit, min_depth):
@ -456,14 +459,7 @@ class EventFederationStore(SQLBaseStore):
front = new_front
event_results |= new_front
events = self._get_events_txn(txn, event_results)
events = sorted(
[ev for ev in events if ev.depth >= min_depth],
key=lambda e: e.depth,
)
return events[:limit]
return event_results
def clean_room_for_join(self, room_id):
return self.runInteraction(

408
synapse/storage/events.py
View file

@ -15,11 +15,12 @@
from _base import SQLBaseStore, _RollbackButIsFineException
from twisted.internet import defer
from twisted.internet import defer, reactor
from synapse.events import FrozenEvent
from synapse.events.utils import prune_event
from synapse.util.logcontext import preserve_context_over_deferred
from synapse.util.logutils import log_function
from synapse.api.constants import EventTypes
from synapse.crypto.event_signing import compute_event_reference_hash
@ -34,6 +35,16 @@ import simplejson as json
logger = logging.getLogger(__name__)
# These values are used in the `enqueus_event` and `_do_fetch` methods to
# control how we batch/bulk fetch events from the database.
# The values are plucked out of thing air to make initial sync run faster
# on jki.re
# TODO: Make these configurable.
EVENT_QUEUE_THREADS = 3 # Max number of threads that will fetch events
EVENT_QUEUE_ITERATIONS = 3 # No. times we block waiting for requests for events
EVENT_QUEUE_TIMEOUT_S = 0.1 # Timeout when waiting for requests for events
class EventsStore(SQLBaseStore):
@defer.inlineCallbacks
@log_function
@ -91,18 +102,17 @@ class EventsStore(SQLBaseStore):
Returns:
Deferred : A FrozenEvent.
"""
event = yield self.runInteraction(
"get_event", self._get_event_txn,
event_id,
events = yield self._get_events(
[event_id],
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
if not event and not allow_none:
if not events and not allow_none:
raise RuntimeError("Could not find event %s" % (event_id,))
defer.returnValue(event)
defer.returnValue(events[0] if events else None)
@log_function
def _persist_event_txn(self, txn, event, context, backfilled,
@ -401,28 +411,75 @@ class EventsStore(SQLBaseStore):
"have_events", f,
)
@defer.inlineCallbacks
def _get_events(self, event_ids, check_redacted=True,
get_prev_content=False):
return self.runInteraction(
"_get_events", self._get_events_txn, event_ids,
check_redacted=check_redacted, get_prev_content=get_prev_content,
get_prev_content=False, allow_rejected=False):
if not event_ids:
defer.returnValue([])
event_map = self._get_events_from_cache(
event_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
missing_events_ids = [e for e in event_ids if e not in event_map]
if not missing_events_ids:
defer.returnValue([
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
])
missing_events = yield self._enqueue_events(
missing_events_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
event_map.update(missing_events)
defer.returnValue([
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
])
def _get_events_txn(self, txn, event_ids, check_redacted=True,
get_prev_content=False):
get_prev_content=False, allow_rejected=False):
if not event_ids:
return []
events = [
self._get_event_txn(
txn, event_id,
check_redacted=check_redacted,
get_prev_content=get_prev_content
)
for event_id in event_ids
]
event_map = self._get_events_from_cache(
event_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
return [e for e in events if e]
missing_events_ids = [e for e in event_ids if e not in event_map]
if not missing_events_ids:
return [
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
]
missing_events = self._fetch_events_txn(
txn,
missing_events_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
event_map.update(missing_events)
return [
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
]
def _invalidate_get_event_cache(self, event_id):
for check_redacted in (False, True):
@ -433,54 +490,217 @@ class EventsStore(SQLBaseStore):
def _get_event_txn(self, txn, event_id, check_redacted=True,
get_prev_content=False, allow_rejected=False):
try:
ret = self._get_event_cache.get(event_id, check_redacted, get_prev_content)
if allow_rejected or not ret.rejected_reason:
return ret
else:
return None
except KeyError:
pass
sql = (
"SELECT e.internal_metadata, e.json, r.event_id, rej.reason "
"FROM event_json as e "
"LEFT JOIN redactions as r ON e.event_id = r.redacts "
"LEFT JOIN rejections as rej on rej.event_id = e.event_id "
"WHERE e.event_id = ? "
"LIMIT 1 "
)
txn.execute(sql, (event_id,))
res = txn.fetchone()
if not res:
return None
internal_metadata, js, redacted, rejected_reason = res
result = self._get_event_from_row_txn(
txn, internal_metadata, js, redacted,
events = self._get_events_txn(
txn, [event_id],
check_redacted=check_redacted,
get_prev_content=get_prev_content,
rejected_reason=rejected_reason,
allow_rejected=allow_rejected,
)
self._get_event_cache.prefill(event_id, check_redacted, get_prev_content, result)
if allow_rejected or not rejected_reason:
return result
else:
return None
return events[0] if events else None
def _get_event_from_row_txn(self, txn, internal_metadata, js, redacted,
check_redacted=True, get_prev_content=False,
rejected_reason=None):
def _get_events_from_cache(self, events, check_redacted, get_prev_content,
allow_rejected):
event_map = {}
for event_id in events:
try:
ret = self._get_event_cache.get(
event_id, check_redacted, get_prev_content
)
if allow_rejected or not ret.rejected_reason:
event_map[event_id] = ret
else:
event_map[event_id] = None
except KeyError:
pass
return event_map
def _do_fetch(self, conn):
"""Takes a database connection and waits for requests for events from
the _event_fetch_list queue.
"""
event_list = []
i = 0
while True:
try:
with self._event_fetch_lock:
event_list = self._event_fetch_list
self._event_fetch_list = []
if not event_list:
single_threaded = self.database_engine.single_threaded
if single_threaded or i > EVENT_QUEUE_ITERATIONS:
self._event_fetch_ongoing -= 1
return
else:
self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S)
i += 1
continue
i = 0
event_id_lists = zip(*event_list)[0]
event_ids = [
item for sublist in event_id_lists for item in sublist
]
rows = self._new_transaction(
conn, "do_fetch", [], self._fetch_event_rows, event_ids
)
row_dict = {
r["event_id"]: r
for r in rows
}
# We only want to resolve deferreds from the main thread
def fire(lst, res):
for ids, d in lst:
if not d.called:
try:
d.callback([
res[i]
for i in ids
if i in res
])
except:
logger.exception("Failed to callback")
reactor.callFromThread(fire, event_list, row_dict)
except Exception as e:
logger.exception("do_fetch")
# We only want to resolve deferreds from the main thread
def fire(evs):
for _, d in evs:
if not d.called:
d.errback(e)
if event_list:
reactor.callFromThread(fire, event_list)
@defer.inlineCallbacks
def _enqueue_events(self, events, check_redacted=True,
get_prev_content=False, allow_rejected=False):
"""Fetches events from the database using the _event_fetch_list. This
allows batch and bulk fetching of events - it allows us to fetch events
without having to create a new transaction for each request for events.
"""
if not events:
defer.returnValue({})
events_d = defer.Deferred()
with self._event_fetch_lock:
self._event_fetch_list.append(
(events, events_d)
)
self._event_fetch_lock.notify()
if self._event_fetch_ongoing < EVENT_QUEUE_THREADS:
self._event_fetch_ongoing += 1
should_start = True
else:
should_start = False
if should_start:
self.runWithConnection(
self._do_fetch
)
rows = yield preserve_context_over_deferred(events_d)
if not allow_rejected:
rows[:] = [r for r in rows if not r["rejects"]]
res = yield defer.gatherResults(
[
self._get_event_from_row(
row["internal_metadata"], row["json"], row["redacts"],
check_redacted=check_redacted,
get_prev_content=get_prev_content,
rejected_reason=row["rejects"],
)
for row in rows
],
consumeErrors=True
)
defer.returnValue({
e.event_id: e
for e in res if e
})
def _fetch_event_rows(self, txn, events):
rows = []
N = 200
for i in range(1 + len(events) / N):
evs = events[i*N:(i + 1)*N]
if not evs:
break
sql = (
"SELECT "
" e.event_id as event_id, "
" e.internal_metadata,"
" e.json,"
" r.redacts as redacts,"
" rej.event_id as rejects "
" FROM event_json as e"
" LEFT JOIN rejections as rej USING (event_id)"
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
" WHERE e.event_id IN (%s)"
) % (",".join(["?"]*len(evs)),)
txn.execute(sql, evs)
rows.extend(self.cursor_to_dict(txn))
return rows
def _fetch_events_txn(self, txn, events, check_redacted=True,
get_prev_content=False, allow_rejected=False):
if not events:
return {}
rows = self._fetch_event_rows(
txn, events,
)
if not allow_rejected:
rows[:] = [r for r in rows if not r["rejects"]]
res = [
self._get_event_from_row_txn(
txn,
row["internal_metadata"], row["json"], row["redacts"],
check_redacted=check_redacted,
get_prev_content=get_prev_content,
rejected_reason=row["rejects"],
)
for row in rows
]
return {
r.event_id: r
for r in res
}
@defer.inlineCallbacks
def _get_event_from_row(self, internal_metadata, js, redacted,
check_redacted=True, get_prev_content=False,
rejected_reason=None):
d = json.loads(js)
internal_metadata = json.loads(internal_metadata)
if rejected_reason:
rejected_reason = yield self._simple_select_one_onecol(
table="rejections",
keyvalues={"event_id": rejected_reason},
retcol="reason",
desc="_get_event_from_row",
)
ev = FrozenEvent(
d,
internal_metadata_dict=internal_metadata,
@ -490,12 +710,74 @@ class EventsStore(SQLBaseStore):
if check_redacted and redacted:
ev = prune_event(ev)
ev.unsigned["redacted_by"] = redacted
redaction_id = yield self._simple_select_one_onecol(
table="redactions",
keyvalues={"redacts": ev.event_id},
retcol="event_id",
desc="_get_event_from_row",
)
ev.unsigned["redacted_by"] = redaction_id
# Get the redaction event.
because = yield self.get_event(
redaction_id,
check_redacted=False
)
if because:
ev.unsigned["redacted_because"] = because
if get_prev_content and "replaces_state" in ev.unsigned:
prev = yield self.get_event(
ev.unsigned["replaces_state"],
get_prev_content=False,
)
if prev:
ev.unsigned["prev_content"] = prev.get_dict()["content"]
self._get_event_cache.prefill(
ev.event_id, check_redacted, get_prev_content, ev
)
defer.returnValue(ev)
def _get_event_from_row_txn(self, txn, internal_metadata, js, redacted,
check_redacted=True, get_prev_content=False,
rejected_reason=None):
d = json.loads(js)
internal_metadata = json.loads(internal_metadata)
if rejected_reason:
rejected_reason = self._simple_select_one_onecol_txn(
txn,
table="rejections",
keyvalues={"event_id": rejected_reason},
retcol="reason",
)
ev = FrozenEvent(
d,
internal_metadata_dict=internal_metadata,
rejected_reason=rejected_reason,
)
if check_redacted and redacted:
ev = prune_event(ev)
redaction_id = self._simple_select_one_onecol_txn(
txn,
table="redactions",
keyvalues={"redacts": ev.event_id},
retcol="event_id",
)
ev.unsigned["redacted_by"] = redaction_id
# Get the redaction event.
because = self._get_event_txn(
txn,
redacted,
redaction_id,
check_redacted=False
)
@ -511,6 +793,10 @@ class EventsStore(SQLBaseStore):
if prev:
ev.unsigned["prev_content"] = prev.get_dict()["content"]
self._get_event_cache.prefill(
ev.event_id, check_redacted, get_prev_content, ev
)
return ev
def _parse_events(self, rows):

39
synapse/storage/roommember.py
View file

@ -76,16 +76,16 @@ class RoomMemberStore(SQLBaseStore):
Returns:
Deferred: Results in a MembershipEvent or None.
"""
def f(txn):
events = self._get_members_events_txn(
txn,
room_id,
user_id=user_id,
)
return events[0] if events else None
return self.runInteraction("get_room_member", f)
return self.runInteraction(
"get_room_member",
self._get_members_events_txn,
room_id,
user_id=user_id,
).addCallback(
self._get_events
).addCallback(
lambda events: events[0] if events else None
)
def get_users_in_room(self, room_id):
def f(txn):
@ -110,15 +110,12 @@ class RoomMemberStore(SQLBaseStore):
Returns:
list of namedtuples representing the members in this room.
"""
def f(txn):
return self._get_members_events_txn(
txn,
room_id,
membership=membership,
)
return self.runInteraction("get_room_members", f)
return self.runInteraction(
"get_room_members",
self._get_members_events_txn,
room_id,
membership=membership,
).addCallback(self._get_events)
def get_rooms_for_user_where_membership_is(self, user_id, membership_list):
""" Get all the rooms for this user where the membership for this user
@ -190,14 +187,14 @@ class RoomMemberStore(SQLBaseStore):
return self.runInteraction(
"get_members_query", self._get_members_events_txn,
where_clause, where_values
)
).addCallbacks(self._get_events)
def _get_members_events_txn(self, txn, room_id, membership=None, user_id=None):
rows = self._get_members_rows_txn(
txn,
room_id, membership, user_id,
)
return self._get_events_txn(txn, [r["event_id"] for r in rows])
return [r["event_id"] for r in rows]
def _get_members_rows_txn(self, txn, room_id, membership=None, user_id=None):
where_clause = "c.room_id = ?"

19
synapse/storage/schema/delta/19/event_index.sql Normal file
View file

@ -0,0 +1,19 @@
/* Copyright 2015 OpenMarket Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CREATE INDEX events_order_topo_stream_room ON events(
topological_ordering, stream_ordering, room_id
);

28
synapse/storage/state.py
View file

@ -43,6 +43,7 @@ class StateStore(SQLBaseStore):
* `state_groups_state`: Maps state group to state events.
"""
@defer.inlineCallbacks
def get_state_groups(self, event_ids):
""" Get the state groups for the given list of event_ids
@ -71,17 +72,29 @@ class StateStore(SQLBaseStore):
retcol="event_id",
)
state = self._get_events_txn(txn, state_ids)
res[group] = state
res[group] = state_ids
return res
return self.runInteraction(
states = yield self.runInteraction(
"get_state_groups",
f,
)
@defer.inlineCallbacks
def c(vals):
vals[:] = yield self._get_events(vals, get_prev_content=False)
yield defer.gatherResults(
[
c(vals)
for vals in states.values()
],
consumeErrors=True,
)
defer.returnValue(states)
def _store_state_groups_txn(self, txn, event, context):
if context.current_state is None:
return
@ -146,11 +159,12 @@ class StateStore(SQLBaseStore):
args = (room_id, )
txn.execute(sql, args)
results = self.cursor_to_dict(txn)
results = txn.fetchall()
return self._parse_events_txn(txn, results)
return [r[0] for r in results]
events = yield self.runInteraction("get_current_state", f)
event_ids = yield self.runInteraction("get_current_state", f)
events = yield self._get_events(event_ids, get_prev_content=False)
defer.returnValue(events)

43
synapse/storage/stream.py
View file

@ -224,7 +224,7 @@ class StreamStore(SQLBaseStore):
return self.runInteraction("get_room_events_stream", f)
@log_function
@defer.inlineCallbacks
def paginate_room_events(self, room_id, from_key, to_key=None,
direction='b', limit=-1,
with_feedback=False):
@ -286,18 +286,20 @@ class StreamStore(SQLBaseStore):
# TODO (erikj): We should work out what to do here instead.
next_token = to_key if to_key else from_key
events = self._get_events_txn(
txn,
[r["event_id"] for r in rows],
get_prev_content=True
)
return rows, next_token,
self._set_before_and_after(events, rows)
rows, token = yield self.runInteraction("paginate_room_events", f)
return events, next_token,
events = yield self._get_events(
[r["event_id"] for r in rows],
get_prev_content=True
)
return self.runInteraction("paginate_room_events", f)
self._set_before_and_after(events, rows)
defer.returnValue((events, token))
@defer.inlineCallbacks
def get_recent_events_for_room(self, room_id, limit, end_token,
with_feedback=False, from_token=None):
# TODO (erikj): Handle compressed feedback
@ -349,20 +351,23 @@ class StreamStore(SQLBaseStore):
else:
token = (str(end_token), str(end_token))
events = self._get_events_txn(
txn,
[r["event_id"] for r in rows],
get_prev_content=True
)
return rows, token
self._set_before_and_after(events, rows)
return events, token
return self.runInteraction(
rows, token = yield self.runInteraction(
"get_recent_events_for_room", get_recent_events_for_room_txn
)
logger.debug("stream before")
events = yield self._get_events(
[r["event_id"] for r in rows],
get_prev_content=True
)
logger.debug("stream after")
self._set_before_and_after(events, rows)
defer.returnValue((events, token))
@defer.inlineCallbacks
def get_room_events_max_id(self, direction='f'):
token = yield self._stream_id_gen.get_max_token(self)

36
synapse/util/__init__.py
View file

@ -29,6 +29,34 @@ def unwrapFirstError(failure):
return failure.value.subFailure
def unwrap_deferred(d):
"""Given a deferred that we know has completed, return its value or raise
the failure as an exception
"""
if not d.called:
raise RuntimeError("deferred has not finished")
res = []
def f(r):
res.append(r)
return r
d.addCallback(f)
if res:
return res[0]
def f(r):
res.append(r)
return r
d.addErrback(f)
if res:
res[0].raiseException()
else:
raise RuntimeError("deferred did not call callbacks")
class Clock(object):
"""A small utility that obtains current time-of-day so that time may be
mocked during unit-tests.
@ -52,16 +80,16 @@ class Clock(object):
def stop_looping_call(self, loop):
loop.stop()
def call_later(self, delay, callback):
def call_later(self, delay, callback, *args, **kwargs):
current_context = LoggingContext.current_context()
def wrapped_callback():
def wrapped_callback(*args, **kwargs):
with PreserveLoggingContext():
LoggingContext.thread_local.current_context = current_context
callback()
callback(*args, **kwargs)
with PreserveLoggingContext():
return reactor.callLater(delay, wrapped_callback)
return reactor.callLater(delay, wrapped_callback, *args, **kwargs)
def cancel_call_later(self, timer):
timer.cancel()

3
tests/storage/test_base.py
View file

@ -33,8 +33,9 @@ class SQLBaseStoreTestCase(unittest.TestCase):
def setUp(self):
self.db_pool = Mock(spec=["runInteraction"])
self.mock_txn = Mock()
self.mock_conn = Mock(spec_set=["cursor"])
self.mock_conn = Mock(spec_set=["cursor", "rollback", "commit"])
self.mock_conn.cursor.return_value = self.mock_txn
self.mock_conn.rollback.return_value = None
# Our fake runInteraction just runs synchronously inline
def runInteraction(func, *args, **kwargs):