Adds the bigip_selfip module

Another bootstrapping module, this module allows for one to manage
self IP addresses on a BIG-IP.

Tests for this module can be found here

https://github.com/F5Networks/f5-ansible/blob/master/roles/__bigip_selfip/tasks/main.yaml

Platforms this was tested on are

11.5.4 HF1
11.6.0
12.0.0
12.1.0 HF1

network/f5/bigip_selfip.py

@@ -0,0 +1,449 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# 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_selfip
+short_description: Manage Self-IPs on a BIG-IP system
+description:
+  - Manage Self-IPs on a BIG-IP system
+version_added: "2.2"
+options:
+  address:
+    description:
+      - The IP addresses for the new self IP. This value is ignored upon update
+        as addresses themselves cannot be changed after they are created.
+  name:
+    description:
+      - The self IP to create.
+    required: true
+    default: Value of C(address)
+  netmask:
+    description:
+      - The netmasks for the self IP.
+    required: true
+  state:
+    description:
+      - The state of the variable on the system. When C(present), guarantees
+        that the Self-IP exists with the provided attributes. When C(absent),
+        removes the Self-IP from the system.
+    required: false
+    default: present
+    choices:
+      - absent
+      - present
+  traffic_group:
+    description:
+      - The traffic group for the self IP addresses in an active-active,
+        redundant load balancer configuration.
+    required: false
+  vlan:
+    description:
+      - The VLAN that the new self IPs will be on.
+    required: true
+notes:
+  - Requires the f5-sdk Python package on the host. This is as easy as pip
+    install f5-sdk.
+  - Requires the netaddr Python package on the host.
+extends_documentation_fragment: f5
+requirements:
+  - netaddr
+  - f5-sdk
+author:
+  - Tim Rupp (@caphrim007)
+'''
+
+EXAMPLES = '''
+- name: Create Self IP
+  bigip_selfip:
+      address: "10.10.10.10"
+      name: "self1"
+      netmask: "255.255.255.0"
+      password: "secret"
+      server: "lb.mydomain.com"
+      user: "admin"
+      validate_certs: "no"
+      vlan: "vlan1"
+  delegate_to: localhost
+
+- name: Delete Self IP
+  bigip_selfip:
+      name: "self1"
+      password: "secret"
+      server: "lb.mydomain.com"
+      state: "absent"
+      user: "admin"
+      validate_certs: "no"
+  delegate_to: localhost
+'''
+
+RETURN = '''
+address:
+    description: The address for the Self IP
+    returned: created
+    type: string
+    sample: "192.168.10.10"
+name:
+    description: The name of the Self IP
+    returned:
+        - created
+        - changed
+        - deleted
+    type: string
+    sample: "self1"
+netmask:
+    description: The netmask of the Self IP
+    returned:
+        - changed
+        - created
+    type: string
+    sample: "255.255.255.0"
+traffic_group:
+    description: The traffic group that the Self IP is a member of
+    return:
+        - changed
+        - created
+    type: string
+    sample: "traffic-group-local-only"
+vlan:
+    description: The VLAN set on the Self IP
+    return:
+        - changed
+        - created
+    type: string
+    sample: "vlan1"
+'''
+
+try:
+    from f5.bigip import ManagementRoot
+    from icontrol.session import iControlUnexpectedHTTPError
+    HAS_F5SDK = True
+except ImportError:
+    HAS_F5SDK = False
+
+try:
+    from netaddr import IPNetwork, AddrFormatError
+    HAS_NETADDR = True
+except ImportError:
+    HAS_NETADDR = False
+
+FLOAT = ['enabled', 'disabled']
+DEFAULT_TG = 'traffic-group-local-only'
+
+
+class BigIpSelfIp(object):
+    def __init__(self, *args, **kwargs):
+        if not HAS_F5SDK:
+            raise F5ModuleError("The python f5-sdk module is required")
+
+        # The params that change in the module
+        self.cparams = dict()
+
+        # Stores the params that are sent to the module
+        self.params = kwargs
+        self.api = ManagementRoot(kwargs['server'],
+                                  kwargs['user'],
+                                  kwargs['password'],
+                                  port=kwargs['server_port'])
+
+    def present(self):
+        changed = False
+
+        if self.exists():
+            changed = self.update()
+        else:
+            changed = self.create()
+
+        return changed
+
+    def absent(self):
+        changed = False
+
+        if self.exists():
+            changed = self.delete()
+
+        return changed
+
+    def read(self):
+        """Read information and transform it
+
+        The values that are returned by BIG-IP in the f5-sdk can have encoding
+        attached to them as well as be completely missing in some cases.
+
+        Therefore, this method will transform the data from the BIG-IP into a
+        format that is more easily consumable by the rest of the class and the
+        parameters that are supported by the module.
+        """
+        p = dict()
+        name = self.params['name']
+        partition = self.params['partition']
+        r = self.api.tm.net.selfips.selfip.load(
+            name=name,
+            partition=partition
+        )
+
+        if hasattr(r, 'address'):
+            ipnet = IPNetwork(r.address)
+            p['address'] = str(ipnet.ip)
+        if hasattr(r, 'address'):
+            ipnet = IPNetwork(r.address)
+            p['netmask'] = str(ipnet.netmask)
+        if hasattr(r, 'trafficGroup'):
+            p['traffic_group'] = str(r.trafficGroup)
+        if hasattr(r, 'vlan'):
+            p['vlan'] = str(r.vlan)
+        p['name'] = name
+        return p
+
+    def update(self):
+        changed = False
+        params = dict()
+        current = self.read()
+
+        check_mode = self.params['check_mode']
+        address = self.params['address']
+        name = self.params['name']
+        netmask = self.params['netmask']
+        partition = self.params['partition']
+        traffic_group = self.params['traffic_group']
+        vlan = self.params['vlan']
+
+        if address is not None and address != current['address']:
+            raise F5ModuleError(
+                'Self IP addresses cannot be updated'
+            )
+
+        if netmask is not None:
+            # I ignore the address value here even if they provide it because
+            # you are not allowed to change it.
+            try:
+                address = IPNetwork(current['address'])
+
+                new_addr = "%s/%s" % (address.ip, netmask)
+                nipnet = IPNetwork(new_addr)
+
+                cur_addr = "%s/%s" % (current['address'], current['netmask'])
+                cipnet = IPNetwork(cur_addr)
+
+                if nipnet != cipnet:
+                    address = "%s/%s" % (nipnet.ip, nipnet.prefixlen)
+                    params['address'] = address
+            except AddrFormatError:
+                raise F5ModuleError(
+                    'The provided address/netmask value was invalid'
+                )
+
+        if traffic_group is not None:
+            groups = self.api.tm.cm.traffic_groups.get_collection()
+            params['trafficGroup'] = "/%s/%s" % (partition, traffic_group)
+
+            if 'traffic_group' in current:
+                if traffic_group != current['traffic_group']:
+                    params['trafficGroup'] = traffic_group
+            else:
+                params['trafficGroup'] = traffic_group
+
+            if traffic_group not in groups:
+                raise F5ModuleError(
+                    'The specified traffic group was not found'
+                )
+
+        if vlan is not None:
+            vlans = self.get_vlans()
+            vlan = "/%s/%s" % (partition, vlan)
+
+            if 'vlan' in current:
+                if vlan != current['vlan']:
+                    params['vlan'] = vlan
+            else:
+                params['vlan'] = vlan
+
+            if vlan not in vlans:
+                raise F5ModuleError(
+                    'The specified VLAN was not found'
+                )
+
+        if params:
+            changed = True
+            params['name'] = name
+            params['partition'] = partition
+            if check_mode:
+                return changed
+            self.cparams = camel_dict_to_snake_dict(params)
+        else:
+            return changed
+
+        r = self.api.tm.net.selfips.selfip.load(
+            name=name,
+            partition=partition
+        )
+        r.update(**params)
+        r.refresh()
+
+        return True
+
+    def get_vlans(self):
+        partition = self.params['partition']
+        vlans = self.api.tm.net.vlans.get_collection()
+        return [str("/" + partition + "/" + x.name) for x in vlans]
+
+    def create(self):
+        params = dict()
+
+        check_mode = self.params['check_mode']
+        address = self.params['address']
+        name = self.params['name']
+        netmask = self.params['netmask']
+        partition = self.params['partition']
+        traffic_group = self.params['traffic_group']
+        vlan = self.params['vlan']
+
+        if address is None or netmask is None:
+            raise F5ModuleError(
+                'An address and a netmask must be specififed'
+            )
+
+        if vlan is None:
+            raise F5ModuleError(
+                'A VLAN name must be specified'
+            )
+        else:
+            vlan = "/%s/%s" % (partition, vlan)
+
+        try:
+            ipin = "%s/%s" % (address, netmask)
+            ipnet = IPNetwork(ipin)
+            params['address'] = "%s/%s" % (ipnet.ip, ipnet.prefixlen)
+        except AddrFormatError:
+            raise F5ModuleError(
+                'The provided address/netmask value was invalid'
+            )
+
+        if traffic_group is None:
+            params['trafficGroup'] = "/%s/%s" % (partition, DEFAULT_TG)
+        else:
+            groups = self.api.tm.cm.traffic_groups.get_collection()
+            if traffic_group in groups:
+                params['trafficGroup'] = "/%s/%s" % (partition, traffic_group)
+            else:
+                raise F5ModuleError(
+                    'The specified traffic group was not found'
+                )
+
+        vlans = self.get_vlans()
+        if vlan in vlans:
+            params['vlan'] = vlan
+        else:
+            raise F5ModuleError(
+                'The specified VLAN was not found'
+            )
+
+        params['name'] = name
+        params['partition'] = partition
+
+        self.cparams = camel_dict_to_snake_dict(params)
+        if check_mode:
+            return True
+
+        d = self.api.tm.net.selfips.selfip
+        d.create(**params)
+
+        if self.exists():
+            return True
+        else:
+            raise F5ModuleError("Failed to create the self IP")
+
+    def delete(self):
+        params = dict()
+        check_mode = self.params['check_mode']
+
+        params['name'] = self.params['name']
+        params['partition'] = self.params['partition']
+
+        self.cparams = camel_dict_to_snake_dict(params)
+        if check_mode:
+            return True
+
+        dc = self.api.tm.net.selfips.selfip.load(**params)
+        dc.delete()
+
+        if self.exists():
+            raise F5ModuleError("Failed to delete the self IP")
+        return True
+
+    def exists(self):
+        name = self.params['name']
+        partition = self.params['partition']
+        return self.api.tm.net.selfips.selfip.exists(
+            name=name,
+            partition=partition
+        )
+
+    def flush(self):
+        result = dict()
+        state = self.params['state']
+
+        try:
+            if state == "present":
+                changed = self.present()
+            elif state == "absent":
+                changed = self.absent()
+        except iControlUnexpectedHTTPError as e:
+            raise F5ModuleError(str(e))
+
+        result.update(**self.cparams)
+        result.update(dict(changed=changed))
+        return result
+
+
+def main():
+    argument_spec = f5_argument_spec()
+
+    meta_args = dict(
+        address=dict(required=False, default=None),
+        name=dict(required=True),
+        netmask=dict(required=False, default=None),
+        traffic_group=dict(required=False, default=None),
+        vlan=dict(required=False, default=None)
+    )
+    argument_spec.update(meta_args)
+
+    module = AnsibleModule(
+        argument_spec=argument_spec,
+        supports_check_mode=True
+    )
+
+    try:
+        if not HAS_NETADDR:
+            raise F5ModuleError(
+                "The netaddr python module is required."
+            )
+
+        obj = BigIpSelfIp(check_mode=module.check_mode, **module.params)
+        result = obj.flush()
+
+        module.exit_json(**result)
+    except F5ModuleError as e:
+        module.fail_json(msg=str(e))
+
+from ansible.module_utils.basic import *
+from ansible.module_utils.ec2 import camel_dict_to_snake_dict
+from ansible.module_utils.f5 import *
+
+if __name__ == '__main__':
+    main()