Creation of bigip_virtual_server module

network/f5/bigip_virtual_server.py

@@ -0,0 +1,453 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# (c) 2015, Etienne Carriere <etienne.carriere@gmail.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_virtual_server
+short_description: "Manages F5 BIG-IP LTM virtual servers"
+description:
+    - "Manages F5 BIG-IP LTM virtual servers via iControl SOAP API"
+version_added: "2.0"
+author: Etienne Carriere
+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"
+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: []
+    validate_certs:
+        description:
+            - If C(no), SSL certificates will not be validated. This should only be used
+              on personally controlled sites using self-signed certificates.
+        required: false
+        default: 'yes'
+        choices: ['yes', 'no']
+        version_added: 2.0
+    state:
+        description:
+            - Pool member state
+        required: true
+        default: present
+        choices: ['present', 'absent', 'enabled', 'disabled']
+        aliases: []
+    partition:
+        description:
+            - Partition
+        required: false
+        default: 'Common'
+        choices: []
+        aliases: []
+    name:
+        description:
+            - "Virtual server name."
+        required: true
+        default: null
+        choices: []
+        aliases: ['vs']
+    destination:
+        description:
+            - "Destination IP of the virtual server (only host is currently supported) . Required when state=present and vs does not exist. Error when state=absent."
+        required: true
+        default: null
+        choices: []
+        aliases: ['address', 'ip']
+    port:
+        description:
+            - "Port of the virtual server . Required when state=present and vs does not exist"
+        required: true
+        default: null
+        choices: []
+        aliases: []
+    all_profiles:
+        description:
+            - "List of all Profiles (HTTP,ClientSSL,ServerSSL,etc) that must be used by the virtual server"
+        required: false
+        default: null
+        choices: []
+        aliases: []
+    pool:
+        description:
+            - "Default pool for the virtual server"
+        required: false
+        default: null
+        choices: []
+        aliases: []
+    snat:
+        description:
+            - "Source network address policy"
+        required: false
+        default: None
+        choices: []
+        aliases: []
+
+    description:
+        description:
+            - "Virtual server description."
+        required: false
+        default: null
+        choices: []
+'''
+
+EXAMPLES = '''
+
+## playbook task examples:
+
+---
+# file bigip-test.yml
+# ...
+  - name: Add VS
+    local_action:
+        module: bigip_virtual_server
+        server: lb.mydomain.net
+        user: admin
+        password: secret
+        state: present
+        partition: MyPartition
+        name: myvirtualserver
+        destination: "{{ ansible_default_ipv4["address"] }}"
+        port: 443
+        pool: "{{ mypool }}"
+        snat: Automap
+        description: Test Virtual Server
+        all_profiles:
+            - http
+            - clientssl
+
+  - name: Modify Port of the Virtual Server
+    local_action:
+        module: bigip_virtual_server
+        server: lb.mydomain.net
+        user: admin
+        password: secret
+        state: present
+        partition: MyPartition
+        name: myvirtualserver
+        port: 8080
+
+  - name: Delete pool
+    local_action:
+        module: bigip_virtual_server
+        server: lb.mydomain.net
+        user: admin
+        password: secret
+        state: absent
+        partition: MyPartition
+        name: myvirtualserver
+'''
+
+try:
+    import bigsuds
+except ImportError:
+    bigsuds_found = False
+else:
+    bigsuds_found = True
+
+# ==========================
+# bigip_node module specific
+#
+
+# map of state values
+STATES={'enabled': 'STATE_ENABLED',
+        'disabled': 'STATE_DISABLED'}
+STATUSES={'enabled': 'SESSION_STATUS_ENABLED',
+          'disabled': 'SESSION_STATUS_DISABLED',
+          'offline': 'SESSION_STATUS_FORCED_DISABLED'}
+
+def bigip_api(bigip, user, password):
+    api = bigsuds.BIGIP(hostname=bigip, username=user, password=password)
+    return api
+
+def disable_ssl_cert_validation():
+    # You probably only want to do this for testing and never in production.
+    # From https://www.python.org/dev/peps/pep-0476/#id29
+    import ssl
+    ssl._create_default_https_context = ssl._create_unverified_context
+
+def fq_name(partition,name):
+    if name is None:
+        return None
+    if name[0] is '/':
+        return name
+    else:
+        return '/%s/%s' % (partition,name)
+
+def fq_list_names(partition,list_names):
+    if list_names is None:
+        return None
+    return map(lambda x: fq_name(partition,x),list_names)
+
+
+def vs_exists(api, vs):
+    # hack to determine if pool exists
+    result = False
+    try:
+        api.LocalLB.VirtualServer.get_object_status(virtual_servers=[vs])
+        result = True
+    except bigsuds.OperationFailed, e:
+        if "was not found" in str(e):
+            result = False
+        else:
+            # genuine exception
+            raise
+    return result
+
+def vs_create(api,name,destination,port,pool):
+    _profiles=[[{'profile_context': 'PROFILE_CONTEXT_TYPE_ALL', 'profile_name': 'tcp'}]]
+    try:
+        api.LocalLB.VirtualServer.create(
+            definitions = [{'name': [name], 'address': [destination], 'port': port, 'protocol': 'PROTOCOL_TCP'}],
+            wildmasks = ['255.255.255.255'],
+            resources = [{'type': 'RESOURCE_TYPE_POOL', 'default_pool_name': pool}],
+            profiles = _profiles)
+        result = True 
+        desc = 0
+    except Exception, e :
+        print e.args
+
+def vs_remove(api,name):
+    api.LocalLB.VirtualServer.delete_virtual_server(virtual_servers = [name ])
+
+def get_profiles(api,name):
+    return api.LocalLB.VirtualServer.get_profile(virtual_servers = [name])[0]
+
+
+
+def set_profiles(api,name,profiles_list):
+    if profiles_list is None:
+        return False
+    current_profiles=map(lambda x:x['profile_name'], get_profiles(api,name))
+    to_add_profiles=[]
+    for x in profiles_list:
+        if x not in current_profiles:
+            to_add_profiles.append({'profile_context': 'PROFILE_CONTEXT_TYPE_ALL', 'profile_name': x})
+    to_del_profiles=[]
+    for x in current_profiles:
+        if (x not in profiles_list) and (x!= "/Common/tcp"):
+            to_del_profiles.append({'profile_context': 'PROFILE_CONTEXT_TYPE_ALL', 'profile_name': x})
+    changed=False
+    if len(to_del_profiles)>0:
+        api.LocalLB.VirtualServer.remove_profile(virtual_servers = [name],profiles = [to_del_profiles])
+        changed=True
+    if len(to_add_profiles)>0:
+        api.LocalLB.VirtualServer.add_profile(virtual_servers = [name],profiles= [to_add_profiles])
+        changed=True
+    return changed
+
+
+def set_snat(api,name,snat):
+    current_state=get_snat_type(api,name)
+    update = False
+    if snat is None:
+        return update
+    if snat == 'None' and current_state != 'SRC_TRANS_NONE':
+        api.LocalLB.VirtualServer.set_source_address_translation_none(virtual_servers = [name])
+        update = True
+    if snat == 'Automap' and current_state != 'SRC_TRANS_AUTOMAP':
+        api.LocalLB.VirtualServer.set_source_address_translation_automap(virtual_servers = [name])
+        update = True
+    return update
+
+def get_snat_type(api,name):
+    return api.LocalLB.VirtualServer.get_source_address_translation_type(virtual_servers = [name])[0]
+
+
+def get_pool(api,name):
+    return api.LocalLB.VirtualServer.get_default_pool_name(virtual_servers = [name])[0]
+
+def set_pool(api,name,pool):
+    current_pool = get_pool (api,name)
+    updated=False
+    if pool is not None and (pool != current_pool):
+        api.LocalLB.VirtualServer.set_default_pool_name(virtual_servers = [name],default_pools = [pool])
+        updated=True
+    return updated
+
+
+
+def get_destination(api,name):
+    return api.LocalLB.VirtualServer.get_destination_v2(virtual_servers = [name])[0]
+
+def set_destination(api,name,destination,port):
+    current_destination = get_destination(api,name)
+    updated=False
+    if (destination is not None and port is not None) and (destination != current_destination['address'] or port != current_destination['port']):
+        api.LocalLB.VirtualServer.set_destination_v2(virtual_servers = [name],destinations=[{'address': destination, 'port':port}])
+        updated=True
+    return updated
+
+
+def get_description(api,name):
+    return api.LocalLB.VirtualServer.get_description(virtual_servers = [name])[0]
+
+def set_description(api,name,description):
+    current_description = get_description(api,name)
+    updated=False
+    if description is not None and current_description != description:
+        api.LocalLB.VirtualServer.set_description(virtual_servers =[name],descriptions=[description])
+        updated=True
+    return updated
+
+
+def main():
+    module = AnsibleModule(
+        argument_spec = dict(
+            server = dict(type='str', required=True),
+            user = dict(type='str', required=True),
+            password = dict(type='str', required=True),
+            validate_certs = dict(default='yes', type='bool'),
+            state = dict(type='str', default='present',
+                         choices=['present', 'absent', 'disabled', 'enabled']),
+            partition = dict(type='str', default='Common'),
+            name = dict(type='str', required=True,aliases=['vs']),
+            destination = dict(type='str', aliases=['address', 'ip']),
+            port = dict(type='int'),
+            all_profiles = dict(type='list'),
+            pool=dict(type='str'),
+            description = dict(type='str'),
+            snat=dict(type='str')
+        ),
+        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']
+    validate_certs = module.params['validate_certs']
+    state = module.params['state']
+    partition = module.params['partition']
+    name = fq_name(partition,module.params['name'])
+    destination=module.params['destination']
+    port=module.params['port']
+    all_profiles=fq_list_names(partition,module.params['all_profiles'])
+    pool=fq_name(partition,module.params['pool'])
+    description = module.params['description']
+    snat = module.params['snat']
+    if not validate_certs:
+        disable_ssl_cert_validation()
+
+    if 1 > port > 65535:
+        module.fail_json(msg="valid ports must be in range 1 - 65535")
+  
+    try:
+        api = bigip_api(server, user, password)
+        result = {'changed': False}  # default
+
+        if state == 'absent':
+                if not module.check_mode:
+                    if vs_exists(api,name):
+                        # hack to handle concurrent runs of module
+                        # pool might be gone before we actually remove
+                        try:
+                            vs_remove(api,name)
+                            result = {'changed' : True, 'deleted' : name }
+                        except bigsuds.OperationFailed, e:
+                            if "was not found" in str(e):
+                                result['changed']= False
+                            else:
+                                raise
+                else:
+                    # check-mode return value
+                    result = {'changed': True}
+
+        elif state == 'present':
+            update = False
+            if not vs_exists(api, name):
+                if (not destination) or (not port):
+                    module.fail_json(msg="both destination and port must be supplied to create a VS")
+                if not module.check_mode:
+                    # a bit of a hack to handle concurrent runs of this module.
+                    # even though we've checked the pool doesn't exist,
+                    # it may exist by the time we run create_pool().
+                    # this catches the exception and does something smart
+                    # about it!
+                    try:
+                        vs_create(api,name,destination,port,pool)
+                        result = {'changed': True}
+                    except bigsuds.OperationFailed, e:
+                        if "already exists" in str(e):
+                            update = True
+                        else:
+                            raise
+                    else:
+                        set_profiles(api,name,all_profiles)
+                        set_snat(api,name,snat)
+                        set_description(api,name,description)
+                else:
+                    # check-mode return value
+                    result = {'changed': True}
+            else:
+                update = True
+            if update:
+                # VS exists
+                if not module.check_mode:
+                    # Have a transaction for all the changes
+                    api.System.Session.start_transaction()
+                    result['changed']|=set_destination(api,name,fq_name(partition,destination),port)
+                    result['changed']|=set_pool(api,name,pool)
+                    result['changed']|=set_description(api,name,description)
+                    result['changed']|=set_snat(api,name,snat)
+                    result['changed']|=set_profiles(api,name,all_profiles)
+                    api.System.Session.submit_transaction()
+                else:
+                    # check-mode return value
+                    result = {'changed': True}
+
+        elif state in ('disabled', 'enabled'):
+            if name is None:
+                module.fail_json(msg="name parameter required when " \
+                                     "state=enabled/disabled")
+            if not module.check_mode:
+                pass
+            else:
+                # check-mode return value
+                result = {'changed': True}
+
+    except Exception, e:
+        module.fail_json(msg="received exception: %s" % e)
+
+    module.exit_json(**result)
+# import module snippets
+from ansible.module_utils.basic import *
+main()
+