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# Copyright 2008-2015 Canonical
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# For further info, check http://launchpad.net/filesync-server
"""
Add a function to help on getting formatted stats on running transactions.
"""
SQL = [
"""
SET search_path = public, pg_catalog;
CREATE FUNCTION activity() RETURNS SETOF pg_stat_activity
LANGUAGE sql SECURITY DEFINER
SET search_path TO public
AS $$
SELECT
datid, datname, procpid, usesysid, usename,
application_name, client_addr, client_hostname, client_port,
backend_start, xact_start, query_start, waiting,
CASE
WHEN current_query LIKE '<IDLE>%'
OR current_query LIKE 'autovacuum:%'
THEN current_query
ELSE
'<HIDDEN>'
END AS current_query
FROM pg_catalog.pg_stat_activity;
$$;
COMMENT ON FUNCTION activity() IS
'SECURITY DEFINER wrapper around pg_stat_activity allowing \
unprivileged users to access most of its information.';
""",
]
def apply(store):
"""Apply the patch."""
for sql in SQL:
store.execute(sql)
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