mirror of
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416 lines
13 KiB
Python
416 lines
13 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright: (c) 2017, Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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DOCUMENTATION = '''
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---
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module: proxysql_scheduler
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version_added: "2.3"
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author: "Ben Mildren (@bmildren)"
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short_description: Adds or removes schedules from proxysql admin interface.
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description:
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- The M(proxysql_scheduler) module adds or removes schedules using the
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proxysql admin interface.
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options:
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active:
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description:
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- A schedule with I(active) set to C(False) will be tracked in the
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database, but will be never loaded in the in-memory data structures.
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default: True
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interval_ms:
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description:
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- How often (in millisecond) the job will be started. The minimum value
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for I(interval_ms) is 100 milliseconds.
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default: 10000
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filename:
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description:
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- Full path of the executable to be executed.
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required: True
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arg1:
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description:
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- Argument that can be passed to the job.
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arg2:
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description:
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- Argument that can be passed to the job.
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arg3:
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description:
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- Argument that can be passed to the job.
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arg4:
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description:
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- Argument that can be passed to the job.
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arg5:
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description:
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- Argument that can be passed to the job.
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comment:
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description:
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- Text field that can be used for any purposed defined by the user.
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state:
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description:
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- When C(present) - adds the schedule, when C(absent) - removes the
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schedule.
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choices: [ "present", "absent" ]
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default: present
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force_delete:
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description:
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- By default we avoid deleting more than one schedule in a single batch,
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however if you need this behaviour and you're not concerned about the
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schedules deleted, you can set I(force_delete) to C(True).
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default: False
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extends_documentation_fragment:
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- proxysql.managing_config
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- proxysql.connectivity
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'''
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EXAMPLES = '''
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---
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# This example adds a schedule, it saves the scheduler config to disk, but
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# avoids loading the scheduler config to runtime (this might be because
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# several servers are being added and the user wants to push the config to
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# runtime in a single batch using the M(proxysql_manage_config) module). It
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# uses supplied credentials to connect to the proxysql admin interface.
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- proxysql_scheduler:
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login_user: 'admin'
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login_password: 'admin'
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interval_ms: 1000
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filename: "/opt/maintenance.py"
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state: present
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load_to_runtime: False
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# This example removes a schedule, saves the scheduler config to disk, and
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# dynamically loads the scheduler config to runtime. It uses credentials
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# in a supplied config file to connect to the proxysql admin interface.
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- proxysql_scheduler:
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config_file: '~/proxysql.cnf'
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filename: "/opt/old_script.py"
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state: absent
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'''
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RETURN = '''
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stdout:
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description: The schedule modified or removed from proxysql
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returned: On create/update will return the newly modified schedule, on
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delete it will return the deleted record.
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type: dict
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"sample": {
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"changed": true,
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"filename": "/opt/test.py",
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"msg": "Added schedule to scheduler",
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"schedules": [
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{
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"active": "1",
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"arg1": null,
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"arg2": null,
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"arg3": null,
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"arg4": null,
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"arg5": null,
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"comment": "",
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"filename": "/opt/test.py",
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"id": "1",
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"interval_ms": "10000"
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}
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],
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"state": "present"
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}
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'''
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['stableinterface'],
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'supported_by': 'community'}
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.mysql import mysql_connect, mysql_driver, mysql_driver_fail_msg
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from ansible.module_utils.six import iteritems
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from ansible.module_utils._text import to_native
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# ===========================================
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# proxysql module specific support methods.
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#
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def perform_checks(module):
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if module.params["login_port"] < 0 \
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or module.params["login_port"] > 65535:
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module.fail_json(
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msg="login_port must be a valid unix port number (0-65535)"
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)
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if module.params["interval_ms"] < 100 \
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or module.params["interval_ms"] > 100000000:
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module.fail_json(
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msg="interval_ms must between 100ms & 100000000ms"
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)
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if mysql_driver is None:
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module.fail_json(msg=mysql_driver_fail_msg)
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def save_config_to_disk(cursor):
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cursor.execute("SAVE SCHEDULER TO DISK")
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return True
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def load_config_to_runtime(cursor):
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cursor.execute("LOAD SCHEDULER TO RUNTIME")
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return True
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class ProxySQLSchedule(object):
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def __init__(self, module):
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self.state = module.params["state"]
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self.force_delete = module.params["force_delete"]
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self.save_to_disk = module.params["save_to_disk"]
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self.load_to_runtime = module.params["load_to_runtime"]
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self.active = module.params["active"]
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self.interval_ms = module.params["interval_ms"]
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self.filename = module.params["filename"]
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config_data_keys = ["arg1",
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"arg2",
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"arg3",
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"arg4",
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"arg5",
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"comment"]
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self.config_data = dict((k, module.params[k])
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for k in config_data_keys)
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def check_schedule_config(self, cursor):
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query_string = \
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"""SELECT count(*) AS `schedule_count`
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FROM scheduler
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WHERE active = %s
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AND interval_ms = %s
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AND filename = %s"""
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query_data = \
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[self.active,
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self.interval_ms,
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self.filename]
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for col, val in iteritems(self.config_data):
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if val is not None:
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query_data.append(val)
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query_string += "\n AND " + col + " = %s"
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cursor.execute(query_string, query_data)
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check_count = cursor.fetchone()
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return int(check_count['schedule_count'])
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def get_schedule_config(self, cursor):
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query_string = \
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"""SELECT *
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FROM scheduler
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WHERE active = %s
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AND interval_ms = %s
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AND filename = %s"""
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query_data = \
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[self.active,
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self.interval_ms,
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self.filename]
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for col, val in iteritems(self.config_data):
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if val is not None:
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query_data.append(val)
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query_string += "\n AND " + col + " = %s"
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cursor.execute(query_string, query_data)
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schedule = cursor.fetchall()
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return schedule
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def create_schedule_config(self, cursor):
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query_string = \
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"""INSERT INTO scheduler (
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active,
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interval_ms,
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filename"""
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cols = 0
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query_data = \
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[self.active,
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self.interval_ms,
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self.filename]
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for col, val in iteritems(self.config_data):
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if val is not None:
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cols += 1
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query_data.append(val)
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query_string += ",\n" + col
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query_string += \
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(")\n" +
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"VALUES (%s, %s, %s" +
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", %s" * cols +
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")")
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cursor.execute(query_string, query_data)
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return True
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def delete_schedule_config(self, cursor):
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query_string = \
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"""DELETE FROM scheduler
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WHERE active = %s
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AND interval_ms = %s
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AND filename = %s"""
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query_data = \
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[self.active,
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self.interval_ms,
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self.filename]
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for col, val in iteritems(self.config_data):
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if val is not None:
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query_data.append(val)
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query_string += "\n AND " + col + " = %s"
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cursor.execute(query_string, query_data)
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check_count = cursor.rowcount
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return True, int(check_count)
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def manage_config(self, cursor, state):
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if state:
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if self.save_to_disk:
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save_config_to_disk(cursor)
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if self.load_to_runtime:
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load_config_to_runtime(cursor)
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def create_schedule(self, check_mode, result, cursor):
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if not check_mode:
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result['changed'] = \
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self.create_schedule_config(cursor)
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result['msg'] = "Added schedule to scheduler"
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result['schedules'] = \
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self.get_schedule_config(cursor)
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self.manage_config(cursor,
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result['changed'])
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else:
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result['changed'] = True
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result['msg'] = ("Schedule would have been added to" +
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" scheduler, however check_mode" +
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" is enabled.")
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def delete_schedule(self, check_mode, result, cursor):
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if not check_mode:
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result['schedules'] = \
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self.get_schedule_config(cursor)
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result['changed'] = \
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self.delete_schedule_config(cursor)
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result['msg'] = "Deleted schedule from scheduler"
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self.manage_config(cursor,
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result['changed'])
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else:
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result['changed'] = True
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result['msg'] = ("Schedule would have been deleted from" +
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" scheduler, however check_mode is" +
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" enabled.")
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# ===========================================
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# Module execution.
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#
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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login_user=dict(default=None, type='str'),
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login_password=dict(default=None, no_log=True, type='str'),
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login_host=dict(default="127.0.0.1"),
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login_unix_socket=dict(default=None),
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login_port=dict(default=6032, type='int'),
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config_file=dict(default="", type='path'),
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active=dict(default=True, type='bool'),
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interval_ms=dict(default=10000, type='int'),
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filename=dict(required=True, type='str'),
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arg1=dict(type='str'),
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arg2=dict(type='str'),
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arg3=dict(type='str'),
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arg4=dict(type='str'),
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arg5=dict(type='str'),
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comment=dict(type='str'),
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state=dict(default='present', choices=['present',
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'absent']),
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force_delete=dict(default=False, type='bool'),
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save_to_disk=dict(default=True, type='bool'),
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load_to_runtime=dict(default=True, type='bool')
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),
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supports_check_mode=True
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)
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perform_checks(module)
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login_user = module.params["login_user"]
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login_password = module.params["login_password"]
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config_file = module.params["config_file"]
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cursor = None
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try:
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cursor = mysql_connect(module,
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login_user,
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login_password,
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config_file,
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cursor_class=mysql_driver.cursors.DictCursor)
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except mysql_driver.Error as e:
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module.fail_json(
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msg="unable to connect to ProxySQL Admin Module.. %s" % to_native(e)
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)
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proxysql_schedule = ProxySQLSchedule(module)
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result = {}
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result['state'] = proxysql_schedule.state
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result['filename'] = proxysql_schedule.filename
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if proxysql_schedule.state == "present":
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try:
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if not proxysql_schedule.check_schedule_config(cursor) > 0:
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proxysql_schedule.create_schedule(module.check_mode,
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result,
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cursor)
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else:
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result['changed'] = False
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result['msg'] = ("The schedule already exists and doesn't" +
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" need to be updated.")
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result['schedules'] = \
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proxysql_schedule.get_schedule_config(cursor)
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except mysql_driver.Error as e:
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module.fail_json(
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msg="unable to modify schedule.. %s" % to_native(e)
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)
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elif proxysql_schedule.state == "absent":
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try:
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existing_schedules = \
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proxysql_schedule.check_schedule_config(cursor)
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if existing_schedules > 0:
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if existing_schedules == 1 or proxysql_schedule.force_delete:
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proxysql_schedule.delete_schedule(module.check_mode,
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result,
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cursor)
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else:
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module.fail_json(
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msg=("Operation would delete multiple records" +
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" use force_delete to override this")
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)
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else:
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result['changed'] = False
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result['msg'] = ("The schedule is already absent from the" +
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" memory configuration")
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except mysql_driver.Error as e:
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module.fail_json(
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msg="unable to remove schedule.. %s" % to_native(e)
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)
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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