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Refactor the Linux service_enable() method
* Fix check_mode for initctl systems Fixes #9009
This commit is contained in:
Toshio Kuratomi
parent
e9229cfeaa
commit
e294e31fd3
1 changed files with 89 additions and 52 deletions
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@ -587,10 +587,16 @@ class LinuxService(Service):
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if self.enable_cmd is None:
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self.module.fail_json(msg='cannot detect command to enable service %s, typo or init system potentially unknown' % self.name)
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self.changed = True
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action = None
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# FIXME: we use chkconfig or systemctl
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# to decide whether to run the command here but need something
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# similar for upstart
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#
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# Upstart's initctl
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#
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if self.enable_cmd.endswith("initctl"):
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def write_to_override_file(file_name, file_contents, ):
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override_file = open(file_name, 'w')
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@ -611,23 +617,48 @@ class LinuxService(Service):
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if manreg.search(open(conf_file_name).read()):
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self.module.fail_json(msg="manual stanza not supported in a .conf file")
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self.changed = False
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if os.path.exists(override_file_name):
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override_file_contents = open(override_file_name).read()
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# Remove manual stanza if present and service enabled
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if self.enable and manreg.search(override_file_contents):
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write_to_override_file(override_file_name, manreg.sub('', override_file_contents))
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self.changed = True
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override_state = manreg.sub('', override_file_contents)
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# Add manual stanza if not present and service disabled
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elif not (self.enable) and not (manreg.search(override_file_contents)):
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write_to_override_file(override_file_name, override_file_contents + '\n' + config_line)
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self.changed = True
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override_state = '\n'.join((override_file_contents, config_line))
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# service already in desired state
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else:
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return
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pass
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# Add file with manual stanza if service disabled
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elif not (self.enable):
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write_to_override_file(override_file_name, config_line)
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self.changed = True
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override_state = config_line
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else:
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return
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# service already in desired state
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pass
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if self.module.check_mode:
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self.module.exit_json(changed=self.changed)
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# The initctl method of enabling and disabling services is much
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# different than for the other service methods. So actually
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# committing the change is done in this conditional and then we
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# skip the boilerplate at the bottom of the method
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if self.changed:
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write_to_override_file(override_file_name, override_state)
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return
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#
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# SysV's chkconfig
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#
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if self.enable_cmd.endswith("chkconfig"):
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if self.enable:
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action = 'on'
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else:
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action = 'off'
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(rc, out, err) = self.execute_command("%s --list %s" % (self.enable_cmd, self.name))
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if 'chkconfig --add %s' % self.name in err:
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self.execute_command("%s --add %s" % (self.enable_cmd, self.name))
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@ -635,22 +666,42 @@ class LinuxService(Service):
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if not self.name in out:
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self.module.fail_json(msg="service %s does not support chkconfig" % self.name)
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state = out.split()[-1]
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if self.enable and ( "3:on" in out and "5:on" in out ):
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return
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elif not self.enable and ( "3:off" in out and "5:off" in out ):
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# Check if we're already in the correct state
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if "3:%s" % action in out and "5:%s" % action in out:
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return
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#
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# Systemd's systemctl
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#
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if self.enable_cmd.endswith("systemctl"):
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if self.enable:
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action = 'enable'
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else:
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action = 'disable'
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# Check if we're already in the correct state
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d = self.get_systemd_status_dict()
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if "UnitFileState" in d:
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if self.enable and d["UnitFileState"] == "enabled":
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return
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self.changed = False
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elif not self.enable and d["UnitFileState"] == "disabled":
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return
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self.changed = False
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elif not self.enable:
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self.changed = False
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if not self.changed:
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return
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#
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# OpenRC's rc-update
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#
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if self.enable_cmd.endswith("rc-update"):
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if self.enable:
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action = 'add'
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else:
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action = 'delete'
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(rc, out, err) = self.execute_command("%s show" % self.enable_cmd)
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for line in out.splitlines():
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service_name, runlevels = line.split('|')
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@ -660,15 +711,18 @@ class LinuxService(Service):
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runlevels = re.split(r'\s+', runlevels)
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# service already enabled for the runlevel
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if self.enable and self.runlevel in runlevels:
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return
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self.changed = False
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# service already disabled for the runlevel
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elif not self.enable and self.runlevel not in runlevels:
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return
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self.changed = False
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break
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else:
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# service already disabled altogether
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if not self.enable:
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return
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self.changed = False
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if not self.changed:
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return
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if self.enable_cmd.endswith("update-rc.d"):
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if self.enable:
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@ -676,6 +730,14 @@ class LinuxService(Service):
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else:
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action = 'disable'
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if self.enable:
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# make sure the init.d symlinks are created
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# otherwise enable might not work
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(rc, out, err) = self.execute_command("%s %s defaults" \
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% (self.enable_cmd, self.name))
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if rc != 0:
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return (rc, out, err)
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(rc, out, err) = self.execute_command("%s -n %s %s" \
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% (self.enable_cmd, self.name, action))
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self.changed = False
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@ -696,51 +758,26 @@ class LinuxService(Service):
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self.changed = True
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break
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if self.module.check_mode:
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self.module.exit_json(changed=self.changed)
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if not self.changed:
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return
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if self.enable:
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# make sure the init.d symlinks are created
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# otherwise enable might not work
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(rc, out, err) = self.execute_command("%s %s defaults" \
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% (self.enable_cmd, self.name))
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if rc != 0:
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return (rc, out, err)
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return self.execute_command("%s %s enable" % (self.enable_cmd, self.name))
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else:
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return self.execute_command("%s %s disable" % (self.enable_cmd,
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self.name))
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# we change argument depending on real binary used:
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# - update-rc.d and systemctl wants enable/disable
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# - chkconfig wants on/off
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# - rc-update wants add/delete
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# also, rc-update and systemctl needs the argument order reversed
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if self.enable:
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on_off = "on"
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enable_disable = "enable"
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add_delete = "add"
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else:
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on_off = "off"
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enable_disable = "disable"
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add_delete = "delete"
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if self.enable_cmd.endswith("rc-update"):
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args = (self.enable_cmd, add_delete, self.name + " " + self.runlevel)
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elif self.enable_cmd.endswith("systemctl"):
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args = (self.enable_cmd, enable_disable, self.__systemd_unit)
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else:
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args = (self.enable_cmd, self.name, on_off)
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# If we've gotten to the end, the service needs to be updated
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self.changed = True
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if self.module.check_mode and self.changed:
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self.module.exit_json(changed=True)
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# we change argument order depending on real binary used:
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# rc-update and systemctl need the argument order reversed
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if self.enable_cmd.endswith("rc-update"):
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args = (self.enable_cmd, action, self.name + " " + self.runlevel)
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elif self.enable_cmd.endswith("systemctl"):
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args = (self.enable_cmd, action, self.__systemd_unit)
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else:
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args = (self.enable_cmd, self.name, action)
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if self.module.check_mode:
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self.module.exit_json(changed=self.changed)
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self.module.fail_json(msg=self.execute_command("%s %s %s" % args))
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return self.execute_command("%s %s %s" % args)
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