ansible/net_infrastructure/bigip_monitor_http

#!/usr/bin/python
# -*- coding: utf-8 -*-

# (c) 2013, serge van Ginderachter <serge@vanginderachter.be>
# based on Matt Hite's bigip_pool module
# (c) 2013, Matt Hite <mhite@hotmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.

DOCUMENTATION = '''
---
module: bigip_monitor_http
short_description: "Manages F5 BIG-IP LTM http monitors"
description:
    - "Manages F5 BIG-IP LTM monitors via iControl SOAP API"
version_added: "1.3"
author: Serge van Ginderachter
notes:
    - "Requires BIG-IP software version >= 11"
    - "F5 developed module 'bigsuds' required (see http://devcentral.f5.com)"
    - "Best run as a local_action in your playbook"
    - "Monitor API documentation: https://devcentral.f5.com/wiki/iControl.LocalLB__Monitor.ashx"
requirements:
    - bigsuds
options:
    server:
        description:
            - BIG-IP host
        required: true
        default: null
        choices: []
        aliases: []
    user:
        description:
            - BIG-IP username
        required: true
        default: null
        choices: []
        aliases: []
    password:
        description:
            - BIG-IP password
        required: true
        default: null
        choices: []
        aliases: []
    state:
        description:
            - Monitor state
        required: false
        default: 'present'
        choices: ['present', 'absent']
        aliases: []
    name:
        description:
            - Monitor name
        required: true
        default: null
        choices: []
        aliases: ['monitor']
    partition:
        description:
            - Partition for the monitor
        required: false
        default: 'Common'
        choices: []
        aliases: []
    parent:
        description:
            - The parent template of this monitor template
        required: false
        default: 'http'
        choices: []
        aliases: []
    parent_partition:
        description:
            - Partition for the parent monitor
        required: false
        default: 'Common'
        choices: []
        aliases: []
    send:
        description:
        required: true
        default: null
        choices: []
        aliases: []
    receive:
        description:
        required: true
        default: null
        choices: []
        aliases: []
'''

EXAMPLES = '''

'''

try:
    import bigsuds
except ImportError:
    bigsuds_found = False
else:
    bigsuds_found = True

TEMPLATE_TYPE = 'TTYPE_HTTP'
DEFAULT_PARENT_TYPE = 'http'


# ===========================================
# bigip_monitor module generic methods.
# these should be re-useable for other monitor types
#

def bigip_api(bigip, user, password):

    api = bigsuds.BIGIP(hostname=bigip, username=user, password=password)
    return api


def monitor_exists(module, api, monitor, parent):

    # hack to determine if monitor exists
    result = False
    try:
        ttype = api.LocalLB.Monitor.get_template_type(template_names=[monitor])[0]
        parent2 = api.LocalLB.Monitor.get_parent_template(template_names=[monitor])[0]
        if ttype == TEMPLATE_TYPE and parent == parent2:
            result = True
        else:
            module.fail_json(msg='Monitor already exists, but has a different type (%s) or parent(%s)' % (ttype, parent))
    except bigsuds.OperationFailed, e:
        if "was not found" in str(e):
            result = False
        else:
            # genuine exception
            raise
    return result


def create_monitor(api, monitor, template_attributes):

    try: 
        api.LocalLB.Monitor.create_template(templates=[{'template_name': monitor, 'template_type': TEMPLATE_TYPE}], template_attributes=[template_attributes])
    except bigsuds.OperationFailed, e:
        if "already exists" in str(e):
            pass
        else:
            # genuine exception
            raise


def delete_monitor(api, monitor):

    try:
        api.LocalLB.Monitor.delete_template(template_names=[monitor])
    except bigsuds.OperationFailed, e:
        # maybe it was deleted since we checked
        if not "was not found" in str(e):
            # genuine exception
            raise

def check_string_property(api, monitor, str_property):

    return str_property == api.LocalLB.Monitor.get_template_string_property([monitor], [str_property['type']])[0]


def set_string_property(api, monitor, str_property):

    api.LocalLB.Monitor.set_template_string_property(template_names=[monitor], values=[str_property])


# ===========================================
# main loop
#
# writing a module for other monitor types should 
# only need an updated main() 

def main():


    module = AnsibleModule(
        argument_spec = dict(
            server    = dict(required=True),
            user      = dict(required=True),
            password  = dict(required=True),
            partition = dict(default='Common'),
            state     = dict(default='present', choices=['present', 'absent']),
            name      = dict(required=True),
            parent    = dict(default=DEFAULT_PARENT_TYPE),
            parent_partition = dict(default='Common'),
            send      = dict(required=True),
            receive   = dict(required=True)
        ),
        supports_check_mode=True
    )

    if not bigsuds_found:
        module.fail_json(msg="the python bigsuds module is required")

    server = module.params['server']
    user = module.params['user']
    password = module.params['password']
    partition = module.params['partition']
    parent_partition = module.params['parent_partition']
    state = module.params['state']
    name = module.params['name']
    parent = "/%s/%s" % (parent_partition, module.params['parent'])
    monitor = "/%s/%s" % (partition, name)
    send = module.params['send']
    receive = module.params['receive']


    # main logic 


    try:
        api = bigip_api(server, user, password)
        result = {'changed': False}  # default


        if state == 'absent':
            if monitor_exists:
                delete_monitor(api, monitor)
                result['changed'] = True

        else:
            template_attributes = {'parent_template': parent,
                                   'dest_ipport': {'address_type': 'ATYPE_STAR_ADDRESS_STAR_PORT',
                                                   'ipport': {'address': '0.0.0.0', 
                                                              'port': 0}
                                                  },
                                   'interval': 5,
                                   'timeout': 16,
                                   'is_read_only': False,
                                   'is_directly_usable': True
                                  }
            template_string_properties = [{'type': 'STYPE_SEND',
                                           'value': send},
                                          {'type': 'STYPE_RECEIVE',
                                           'value': receive}]
            if monitor_exists(module, api, monitor, parent):
                for str_property in template_string_properties:
                    if not check_string_property(api, monitor, str_property):
                        if not module.check_mode:
                            set_string_property(api, monitor, str_property)
                        result['changed'] = True
            elif not module.check_mode:
                create_monitor(api, monitor, template_attributes)
                for str_property in template_string_properties:
                    set_string_property(api, monitor, str_property)
                result['changed'] = True
            else: # monitor does not exist and check mode
                result['changed'] = True


    except Exception, e:
        module.fail_json(msg="received exception: %s" % e)

    module.exit_json(**result)

# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()