boyska
56f3127af6
wait for db to be really ready; clearly detect if the db still needs to be prepared
99 lines
2.8 KiB
Python
99 lines
2.8 KiB
Python
import subprocess
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import time
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from doit import loader
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def wait_net_service(server, port, timeout=None):
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""" Wait for network service to appear
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@param timeout: in seconds, if None or 0 wait forever
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@return: True of False, if timeout is None may return only True or
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throw unhandled network exception
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"""
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import socket
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import errno
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s = socket.socket()
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if timeout:
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from time import time as now
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# time module is needed to calc timeout shared between two exceptions
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end = now() + timeout
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while True:
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try:
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if timeout:
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next_timeout = end - now()
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if next_timeout < 0:
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return False
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else:
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s.settimeout(next_timeout)
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s.connect((server, port))
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except socket.timeout as err:
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# this exception occurs only if timeout is set
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if timeout:
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return False
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except socket.error as err:
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# catch timeout exception from underlying network library
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# this one is different from socket.timeout
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if type(err.args) != tuple or err[0] != errno.ETIMEDOUT:
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raise
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else:
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s.close()
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return True
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def wait_pgsql_db(container, dbname, user, timeout=60):
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container_id = subprocess.check_output(
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'docker ps -qf name=feedati_db'.split()).decode('utf8').strip()
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print('container db=', container_id)
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cmd = ['docker', 'exec', container_id,
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'psql', '-h', 'localhost', '-U', user, '-w', dbname]
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for i in range(timeout):
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try:
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subprocess.check_output(cmd, shell=False)
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except subprocess.CalledProcessError as exc:
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if exc.returncode == 2: # there's some more to wait
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time.sleep(1)
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continue
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raise
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else:
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return True
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def up2date_anyimages():
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cmd = "docker images -q feedati/*".split()
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output = subprocess.check_output(cmd).strip()
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if output:
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return True
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return False
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def up2date_hasimage(imagename):
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def fun():
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cmd = ' '.join(['docker', 'volume', 'ls',
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'-qf', 'name=%s' % imagename])
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out = subprocess.check_output(cmd, shell=True).decode('utf8').strip()
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if out:
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return True
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return False
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return fun
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def run(cmd, **kwargs):
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def fun():
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subprocess.check_call(cmd, **kwargs)
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return True
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return fun
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def run_task_func(taskf):
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ret = taskf()
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tasks = loader.generate_tasks(taskf.__name__, ret, taskf.__doc__)
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def fun():
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for task in tasks:
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task.execute()
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return True
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if tasks:
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fun.__doc__ = '\n'.join(t.doc for t in tasks)
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return fun
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