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import argparse
import errno
import logging
import os
import tarfile
import tempfile
import time
import glob
import platform
import yatest.common
from library.python.testing.recipe import declare_recipe, set_env
from library.python.testing.recipe.ports import get_port_range, release_port_range
# copy-paste from yql/library/postgresql/recipe
POSTGRES_TGZ = 'postgres.tgz'
def wait(cmd, process):
res = process.communicate()
code = process.poll()
if code != 0:
raise RuntimeError("cmd failed: %s, code: %s, stdout/stderr: %s / %s", (cmd, code, res[0], res[1]))
logging.debug(res[1])
class PG:
def __init__(self, install_dir):
self.bin_dir = os.path.join(install_dir, "bin")
lib_dir = os.path.join(install_dir, "lib")
self.env = os.environ.copy()
if 'LD_LIBRARY_PATH' in self.env:
self.env['LD_LIBRARY_PATH'] += ':' + lib_dir
else:
self.env['LD_LIBRARY_PATH'] = lib_dir
self.env['LANG'] = 'en_US.UTF-8'
self.env['LC_MESSAGES'] = 'en_US.UTF-8'
def run(self, dbdir, port, user, dbname, max_conn):
self.port = port
self.user = user
self.dbname = dbname
self.dbdir = dbdir
self.max_conn = max_conn
self._init_db()
self._run()
self._create_db()
def migrate(self, migrations_dir):
logging.info("migrations dir: " + migrations_dir)
files = sorted(glob.glob(migrations_dir + "/*.sql"))
for fname in files:
self._execute_sql_file(fname)
def get_pid(self):
return self.handle.process.pid
def _init_db(self):
logging.info("Executing initdb...")
initdb_path = os.path.join(self.bin_dir, 'initdb')
cmd = [initdb_path, '-A trust', '-D', self.dbdir , '-U', self.user]
yatest.common.execute(cmd, env=self.env)
logging.info("Database initiated")
def _run(self):
logging.info("Running postgres...")
postgres_path = os.path.join(self.bin_dir, 'postgres')
cmd = [postgres_path, '-D', self.dbdir, '--port={}'.format(self.port), '-N{}'.format(self.max_conn), '-c', 'timezone=UTC']
self.handle = yatest.common.execute(cmd, env=self.env, wait=False)
logging.info("Postgres is running on port {} with pid {}".format(self.port, self.get_pid()))
def _create_db(self):
logging.info("Creating the database...")
createdb_path = os.path.join(self.bin_dir, 'createdb')
locale = "en_US.utf8"
if platform.system() == "Darwin":
locale = "en_US.UTF-8"
# Try 10 times, since postgres might not be initialized and accepting connections yet
ex = None
for attempt in range(10):
cmd = [createdb_path,
'-p', str(self.port),
'-U', self.user, self.dbname,
'-E', 'UTF8', f'--locale={locale}', '--template=template0']
ex = yatest.common.execute(cmd, check_exit_code=False, env=self.env)
if ex.returncode == 0:
logging.info("Database created")
return
logging.warn("Database creation failed (attempt {}): {}".format(attempt, ex.stderr))
time.sleep(1)
raise Exception(f"cannot create Database, {ex.stderr}")
def _execute_sql_file(self, file_name):
logging.info('Executing {}...'.format(file_name))
psql_path = os.path.join(self.bin_dir, 'psql')
cmd = [psql_path, '-p', str(self.port), '-U', self.user, '-q', '-A', '-d', self.dbname, '-f', file_name]
yatest.common.execute(cmd, env=self.env)
logging.info('Success')
def start(argv):
logging.info("Start postgresql")
def parse_argv(argv):
parser = argparse.ArgumentParser()
parser.add_argument('--archive', metavar='<file>', type=str,
help='postgres.tgz path',
default=POSTGRES_TGZ)
parser.add_argument('-s', '--schema-migrations-dir', type=str, help='directory with DB migrations to run for each schema')
parser.add_argument('-m', '--migrations-dir', type=str, help='directory with DB migrations run')
parser.add_argument('-n', '--max_connections', type=int, default=20, help='set max number of connections to DB')
return parser.parse_args(argv)
def parse_dir(arg):
return [yatest.common.source_path(d.strip()) for d in arg.split(',') if d.strip()]
args = parse_argv(argv)
postgres_dir = tempfile.mkdtemp(prefix='postgres_')
logging.info("Postgresql dir:" + postgres_dir)
working_dir = os.path.join(postgres_dir, 'wd')
os.mkdir(working_dir)
logging.info("Working dir:" + working_dir)
tgz = tarfile.open(args.archive)
tgz.extractall(path=postgres_dir)
port = get_port_range()
dbname = 'test-db'
username = 'test'
pg = PG(os.path.join(postgres_dir, 'postgres'))
pg.run(dbdir=working_dir, port=port, dbname=dbname, user=username, max_conn=args.max_connections)
if args.schema_migrations_dir:
set_env("PG_MIGRATIONS_DIR", ','.join(parse_dir(args.schema_migrations_dir)))
if args.migrations_dir:
for dir in parse_dir(args.migrations_dir):
pg.migrate(dir)
with open("postgres_recipe.pid", "w") as pid_file:
pid_file.write(str(pg.get_pid()))
set_env("POSTGRES_RECIPE_HOST", 'localhost')
set_env("POSTGRES_RECIPE_PORT", str(port))
set_env("POSTGRES_RECIPE_DBNAME", dbname)
set_env("POSTGRES_RECIPE_USER", username)
set_env("POSTGRES_RECIPE_MAX_CONNECTIONS", str(args.max_connections))
set_env("POSTGRES_RECIPE_BIN_DIR", pg.bin_dir)
def is_running(pid):
try:
os.kill(pid, 0)
except OSError as err:
if err.errno == errno.ESRCH:
return False
return True
def stop(argv):
if len(yatest.common.get_param("hang_with_pg", "")):
while True:
continue
release_port_range()
logging.info("Stop postgresql")
with open("postgres_recipe.pid", "r") as f:
pid = int(f.read())
os.kill(pid, 15)
_SHUTDOWN_TIMEOUT = 10
seconds = _SHUTDOWN_TIMEOUT
while is_running(pid) and seconds > 0:
time.sleep(1)
seconds -= 1
if is_running(pid):
logging.error('postgres is still running after %d seconds' % seconds)
os.kill(pid, 9)
if is_running(pid):
logging.error("postgres failed to shutdown after kill 9!")
if __name__ == "__main__":
declare_recipe(start, stop)
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