112 lines
2.9 KiB
Python
Executable File
112 lines
2.9 KiB
Python
Executable File
#!/usr/bin/python
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import os
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import sys
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import subprocess
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import traceback
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from time import gmtime, strftime
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sys.path.append('hooks')
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from charmhelpers.core.hookenv import (
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action_get,
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action_set,
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action_fail,
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config,
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)
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from charmhelpers.core.host import (
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CompareHostReleases,
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lsb_release,
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)
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from percona_utils import (
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pause_unit_helper,
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resume_unit_helper,
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register_configs,
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)
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from percona_hooks import config_changed
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def pause(args):
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"""Pause the MySQL service.
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@raises Exception should the service fail to stop.
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"""
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pause_unit_helper(register_configs())
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def resume(args):
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"""Resume the MySQL service.
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@raises Exception should the service fail to start.
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"""
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resume_unit_helper(register_configs())
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# NOTE(ajkavanagh) - we force a config_changed pseudo-hook to see if the
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# unit needs to bootstrap or restart it's services here.
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config_changed()
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def backup(args):
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basedir = (action_get("basedir")).lower()
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compress = action_get("compress")
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incremental = action_get("incremental")
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sstpw = config("sst-password")
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optionlist = []
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# innobackupex will not create recursive dirs that do not already exist,
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# so help it along
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if not os.path.exists(basedir):
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os.makedirs(basedir)
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# Build a list of options to pass to innobackupex
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if compress:
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optionlist.append("--compress")
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if incremental:
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optionlist.append("--incremental")
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# xtrabackup 2.4 (introduced in Bionic) doesn't support compact backups
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if CompareHostReleases(lsb_release()['DISTRIB_CODENAME']) < 'bionic':
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optionlist.append("--compact")
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try:
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subprocess.check_call(
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['innobackupex', '--galera-info', '--rsync', basedir,
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'--user=sstuser', '--password={}'.format(sstpw)] + optionlist)
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action_set({
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'time-completed': (strftime("%Y-%m-%d %H:%M:%S", gmtime())),
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'outcome': 'Success'}
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)
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except subprocess.CalledProcessError as e:
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action_set({
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'time-completed': (strftime("%Y-%m-%d %H:%M:%S", gmtime())),
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'output': e.output,
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'return-code': e.returncode,
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'traceback': traceback.format_exc()})
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action_fail("innobackupex failed, you should log on to the unit"
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"and check the status of the database")
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# A dictionary of all the defined actions to callables (which take
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# parsed arguments).
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ACTIONS = {"pause": pause, "resume": resume, "backup": backup}
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def main(args):
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action_name = os.path.basename(args[0])
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try:
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action = ACTIONS[action_name]
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except KeyError:
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s = "Action {} undefined".format(action_name)
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action_fail(s)
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return s
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else:
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try:
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action(args)
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except Exception as e:
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action_fail("Action {} failed: {}".format(action_name, str(e)))
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if __name__ == "__main__":
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sys.exit(main(sys.argv))
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