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community.general/plugins/modules/monitoring/sensu/sensu_handler.py

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (c) 2017, Red Hat Inc.
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
---
module: sensu_handler
author: "David Moreau Simard (@dmsimard)"
short_description: Manages Sensu handler configuration
description:
- Manages Sensu handler configuration
- 'For more information, refer to the Sensu documentation: U(https://sensuapp.org/docs/latest/reference/handlers.html)'
options:
state:
type: str
description:
- Whether the handler should be present or not
choices: [ 'present', 'absent' ]
default: present
name:
type: str
description:
- A unique name for the handler. The name cannot contain special characters or spaces.
required: True
type:
type: str
description:
- The handler type
choices: [ 'pipe', 'tcp', 'udp', 'transport', 'set' ]
filter:
type: str
description:
- The Sensu event filter (name) to use when filtering events for the handler.
filters:
type: list
elements: str
description:
- An array of Sensu event filters (names) to use when filtering events for the handler.
- Each array item must be a string.
severities:
type: list
elements: str
description:
- An array of check result severities the handler will handle.
- 'NOTE: event resolution bypasses this filtering.'
- "Example: [ 'warning', 'critical', 'unknown' ]."
mutator:
type: str
description:
- The Sensu event mutator (name) to use to mutate event data for the handler.
timeout:
type: int
description:
- The handler execution duration timeout in seconds (hard stop).
- Only used by pipe and tcp handler types.
default: 10
handle_silenced:
description:
- If events matching one or more silence entries should be handled.
type: bool
default: 'no'
handle_flapping:
description:
- If events in the flapping state should be handled.
type: bool
default: 'no'
command:
type: str
description:
- The handler command to be executed.
- The event data is passed to the process via STDIN.
- 'NOTE: the command attribute is only required for Pipe handlers (i.e. handlers configured with "type": "pipe").'
socket:
type: dict
description:
- The socket definition scope, used to configure the TCP/UDP handler socket.
- 'NOTE: the socket attribute is only required for TCP/UDP handlers (i.e. handlers configured with "type": "tcp" or "type": "udp").'
pipe:
type: dict
description:
- The pipe definition scope, used to configure the Sensu transport pipe.
- 'NOTE: the pipe attribute is only required for Transport handlers (i.e. handlers configured with "type": "transport").'
handlers:
type: list
elements: str
description:
- An array of Sensu event handlers (names) to use for events using the handler set.
- 'NOTE: the handlers attribute is only required for handler sets (i.e. handlers configured with "type": "set").'
notes:
- Check mode is supported
'''
EXAMPLES = '''
# Configure a handler that sends event data as STDIN (pipe)
- name: Configure IRC Sensu handler
community.general.sensu_handler:
name: "irc_handler"
type: "pipe"
command: "/usr/local/bin/notify-irc.sh"
severities:
- "ok"
- "critical"
- "warning"
- "unknown"
timeout: 15
notify:
- Restart sensu-client
- Restart sensu-server
# Delete a handler
- name: Delete IRC Sensu handler
community.general.sensu_handler:
name: "irc_handler"
state: "absent"
# Example of a TCP handler
- name: Configure TCP Sensu handler
community.general.sensu_handler:
name: "tcp_handler"
type: "tcp"
timeout: 30
socket:
host: "10.0.1.99"
port: 4444
register: handler
notify:
- Restart sensu-client
- Restart sensu-server
- name: Secure Sensu handler configuration file
ansible.builtin.file:
path: "{{ handler['file'] }}"
owner: "sensu"
group: "sensu"
mode: "0600"
'''
RETURN = '''
config:
description: Effective handler configuration, when state is present
returned: success
type: dict
sample: {'name': 'irc', 'type': 'pipe', 'command': '/usr/local/bin/notify-irc.sh'}
file:
description: Path to the handler configuration file
returned: success
type: str
sample: "/etc/sensu/conf.d/handlers/irc.json"
name:
description: Name of the handler
returned: success
type: str
sample: "irc"
'''
import json
import os
from ansible.module_utils.basic import AnsibleModule
def main():
module = AnsibleModule(
supports_check_mode=True,
argument_spec=dict(
state=dict(type='str', choices=['present', 'absent'], default='present'),
name=dict(type='str', required=True),
type=dict(type='str', choices=['pipe', 'tcp', 'udp', 'transport', 'set']),
filter=dict(type='str'),
filters=dict(type='list', elements='str'),
severities=dict(type='list', elements='str'),
mutator=dict(type='str'),
timeout=dict(type='int', default=10),
handle_silenced=dict(type='bool', default=False),
handle_flapping=dict(type='bool', default=False),
command=dict(type='str'),
socket=dict(type='dict'),
pipe=dict(type='dict'),
handlers=dict(type='list', elements='str'),
),
required_if=[
['state', 'present', ['type']],
['type', 'pipe', ['command']],
['type', 'tcp', ['socket']],
['type', 'udp', ['socket']],
['type', 'transport', ['pipe']],
['type', 'set', ['handlers']]
]
)
state = module.params['state']
name = module.params['name']
path = '/etc/sensu/conf.d/handlers/{0}.json'.format(name)
if state == 'absent':
if os.path.exists(path):
if module.check_mode:
msg = '{path} would have been deleted'.format(path=path)
module.exit_json(msg=msg, changed=True)
else:
try:
os.remove(path)
msg = '{path} deleted successfully'.format(path=path)
module.exit_json(msg=msg, changed=True)
except OSError as e:
msg = 'Exception when trying to delete {path}: {exception}'
module.fail_json(
msg=msg.format(path=path, exception=str(e)))
else:
# Idempotency: it's okay if the file doesn't exist
msg = '{path} already does not exist'.format(path=path)
module.exit_json(msg=msg)
# Build handler configuration from module arguments
config = {'handlers': {name: {}}}
args = ['type', 'filter', 'filters', 'severities', 'mutator', 'timeout',
'handle_silenced', 'handle_flapping', 'command', 'socket',
'pipe', 'handlers']
for arg in args:
if arg in module.params and module.params[arg] is not None:
config['handlers'][name][arg] = module.params[arg]
# Load the current config, if there is one, so we can compare
current_config = None
try:
current_config = json.load(open(path, 'r'))
except (IOError, ValueError):
# File either doesn't exist or it's invalid JSON
pass
if current_config is not None and current_config == config:
# Config is the same, let's not change anything
module.exit_json(msg='Handler configuration is already up to date',
config=config['handlers'][name],
file=path,
name=name)
# Validate that directory exists before trying to write to it
if not module.check_mode and not os.path.exists(os.path.dirname(path)):
try:
os.makedirs(os.path.dirname(path))
except OSError as e:
module.fail_json(msg='Unable to create {0}: {1}'.format(os.path.dirname(path),
str(e)))
if module.check_mode:
module.exit_json(msg='Handler configuration would have been updated',
changed=True,
config=config['handlers'][name],
file=path,
name=name)
try:
with open(path, 'w') as handler:
handler.write(json.dumps(config, indent=4))
module.exit_json(msg='Handler configuration updated',
changed=True,
config=config['handlers'][name],
file=path,
name=name)
except (OSError, IOError) as e:
module.fail_json(msg='Unable to write file {0}: {1}'.format(path,
str(e)))
if __name__ == '__main__':
main()
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