Add optional limit to graph script

This commit is contained in:
Erik Johnston 2015-01-08 10:53:03 +00:00
parent 8ac9199f56
commit d44dd47fbf

View File

@ -23,14 +23,27 @@ import argparse
from synapse.events import FrozenEvent
def make_graph(db_name, room_id, file_prefix):
def make_graph(db_name, room_id, file_prefix, limit):
conn = sqlite3.connect(db_name)
c = conn.execute(
"SELECT json FROM event_json where room_id = ?",
(room_id,)
sql = (
"SELECT json FROM event_json as j "
"INNER JOIN events as e ON e.event_id = j.event_id "
"WHERE j.room_id = ?"
)
args = [room_id]
if limit:
sql += (
" ORDER BY topological_ordering DESC, stream_ordering DESC "
"LIMIT ?"
)
args.append(limit)
c = conn.execute(sql, args)
events = [FrozenEvent(json.loads(e[0])) for e in c.fetchall()]
events.sort(key=lambda e: e.depth)
@ -128,11 +141,16 @@ if __name__ == "__main__":
)
parser.add_argument(
"-p", "--prefix", dest="prefix",
help="String to prefix output files with"
help="String to prefix output files with",
default="graph_output"
)
parser.add_argument(
"-l", "--limit",
help="Only retrieve the last N events.",
)
parser.add_argument('db')
parser.add_argument('room')
args = parser.parse_args()
make_graph(args.db, args.room, args.prefix)
make_graph(args.db, args.room, args.prefix, args.limit)