changes to include PR review comments

lib/ansible/modules/extras/cloud/centurylink/clc_publicip.py

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+#!/usr/bin/python
+
+# CenturyLink Cloud Ansible Modules.
+#
+# These Ansible modules enable the CenturyLink Cloud v2 API to be called
+# from an within Ansible Playbook.
+#
+# This file is part of CenturyLink Cloud, and is maintained
+# by the Workflow as a Service Team
+#
+# Copyright 2015 CenturyLink Cloud
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# CenturyLink Cloud: http://www.CenturyLinkCloud.com
+# API Documentation: https://www.centurylinkcloud.com/api-docs/v2/
+#
+
+DOCUMENTATION = '''
+module: clc_publicip
+short_description: Add and Delete public ips on servers in CenturyLink Cloud.
+description:
+  - An Ansible module to add or delete public ip addresses on an existing server or servers in CenturyLink Cloud.
+version_added: 1.0
+options:
+  protocol:
+    descirption:
+      - The protocol that the public IP will listen for.
+    default: TCP
+    choices: ['TCP', 'UDP', 'ICMP']
+    required: False
+  ports:
+    description:
+      - A list of ports to expose.
+    required: True
+  server_ids:
+    description:
+      - A list of servers to create public ips on.
+    required: True
+  state:
+    description:
+      - Determine wheteher to create or delete public IPs. If present module will not create a second public ip if one
+        already exists.
+    default: present
+    choices: ['present', 'absent']
+    required: False
+  wait:
+    description:
+      - Whether to wait for the tasks to finish before returning.
+    choices: [ True, False ]
+    default: True
+    required: False
+requirements:
+    - python = 2.7
+    - requests >= 2.5.0
+    - clc-sdk
+notes:
+    - To use this module, it is required to set the below environment variables which enables access to the
+      Centurylink Cloud
+          - CLC_V2_API_USERNAME: the account login id for the centurylink cloud
+          - CLC_V2_API_PASSWORD: the account passwod for the centurylink cloud
+    - Alternatively, the module accepts the API token and account alias. The API token can be generated using the
+      CLC account login and password via the HTTP api call @ https://api.ctl.io/v2/authentication/login
+          - CLC_V2_API_TOKEN: the API token generated from https://api.ctl.io/v2/authentication/login
+          - CLC_ACCT_ALIAS: the account alias associated with the centurylink cloud
+    - Users can set CLC_V2_API_URL to specify an endpoint for pointing to a different CLC environment.
+'''
+
+EXAMPLES = '''
+# Note - You must set the CLC_V2_API_USERNAME And CLC_V2_API_PASSWD Environment variables before running these examples
+
+- name: Add Public IP to Server
+  hosts: localhost
+  gather_facts: False
+  connection: local
+  tasks:
+    - name: Create Public IP For Servers
+      clc_publicip:
+        protocol: 'TCP'
+        ports:
+            - 80
+        server_ids:
+            - UC1ACCTSRVR01
+            - UC1ACCTSRVR02
+        state: present
+      register: clc
+
+    - name: debug
+      debug: var=clc
+
+- name: Delete Public IP from Server
+  hosts: localhost
+  gather_facts: False
+  connection: local
+  tasks:
+    - name: Create Public IP For Servers
+      clc_publicip:
+        server_ids:
+            - UC1ACCTSRVR01
+            - UC1ACCTSRVR02
+        state: absent
+      register: clc
+
+    - name: debug
+      debug: var=clc
+'''
+
+__version__ = '${version}'
+
+from distutils.version import LooseVersion
+
+try:
+    import requests
+except ImportError:
+    REQUESTS_FOUND = False
+else:
+    REQUESTS_FOUND = True
+
+#
+#  Requires the clc-python-sdk.
+#  sudo pip install clc-sdk
+#
+try:
+    import clc as clc_sdk
+    from clc import CLCException
+except ImportError:
+    CLC_FOUND = False
+    clc_sdk = None
+else:
+    CLC_FOUND = True
+
+
+class ClcPublicIp(object):
+    clc = clc_sdk
+    module = None
+    group_dict = {}
+
+    def __init__(self, module):
+        """
+        Construct module
+        """
+        self.module = module
+        if not CLC_FOUND:
+            self.module.fail_json(
+                msg='clc-python-sdk required for this module')
+        if not REQUESTS_FOUND:
+            self.module.fail_json(
+                msg='requests library is required for this module')
+        if requests.__version__ and LooseVersion(requests.__version__) < LooseVersion('2.5.0'):
+            self.module.fail_json(
+                msg='requests library  version should be >= 2.5.0')
+
+        self._set_user_agent(self.clc)
+
+    def process_request(self):
+        """
+        Process the request - Main Code Path
+        :param params: dictionary of module parameters
+        :return: Returns with either an exit_json or fail_json
+        """
+        self._set_clc_credentials_from_env()
+        params = self.module.params
+        server_ids = params['server_ids']
+        ports = params['ports']
+        protocol = params['protocol']
+        state = params['state']
+        requests = []
+        chagned_server_ids = []
+        changed = False
+
+        if state == 'present':
+            changed, chagned_server_ids, requests = self.ensure_public_ip_present(
+                server_ids=server_ids, protocol=protocol, ports=ports)
+        elif state == 'absent':
+            changed, chagned_server_ids, requests = self.ensure_public_ip_absent(
+                server_ids=server_ids)
+        else:
+            return self.module.fail_json(msg="Unknown State: " + state)
+        self._wait_for_requests_to_complete(requests)
+        return self.module.exit_json(changed=changed,
+                                     server_ids=chagned_server_ids)
+
+    @staticmethod
+    def _define_module_argument_spec():
+        """
+        Define the argument spec for the ansible module
+        :return: argument spec dictionary
+        """
+        argument_spec = dict(
+            server_ids=dict(type='list', required=True),
+            protocol=dict(default='TCP', choices=['TCP', 'UDP', 'ICMP']),
+            ports=dict(type='list', required=True),
+            wait=dict(type='bool', default=True),
+            state=dict(default='present', choices=['present', 'absent']),
+        )
+        return argument_spec
+
+    def ensure_public_ip_present(self, server_ids, protocol, ports):
+        """
+        Ensures the given server ids having the public ip available
+        :param server_ids: the list of server ids
+        :param protocol: the ip protocol
+        :param ports: the list of ports to expose
+        :return: (changed, changed_server_ids, results)
+                  changed: A flag indicating if there is any change
+                  changed_server_ids : the list of server ids that are changed
+                  results: The result list from clc public ip call
+        """
+        changed = False
+        results = []
+        changed_server_ids = []
+        servers = self._get_servers_from_clc(
+            server_ids,
+            'Failed to obtain server list from the CLC API')
+        servers_to_change = [
+            server for server in servers if len(
+                server.PublicIPs().public_ips) == 0]
+        ports_to_expose = [{'protocol': protocol, 'port': port}
+                           for port in ports]
+        for server in servers_to_change:
+            if not self.module.check_mode:
+                result = self._add_publicip_to_server(server, ports_to_expose)
+                results.append(result)
+            changed_server_ids.append(server.id)
+            changed = True
+        return changed, changed_server_ids, results
+
+    def _add_publicip_to_server(self, server, ports_to_expose):
+        result = None
+        try:
+            result = server.PublicIPs().Add(ports_to_expose)
+        except CLCException, ex:
+            self.module.fail_json(msg='Failed to add public ip to the server : {0}. {1}'.format(
+                server.id, ex.response_text
+            ))
+        return result
+
+    def ensure_public_ip_absent(self, server_ids):
+        """
+        Ensures the given server ids having the public ip removed if there is any
+        :param server_ids: the list of server ids
+        :return: (changed, changed_server_ids, results)
+                  changed: A flag indicating if there is any change
+                  changed_server_ids : the list of server ids that are changed
+                  results: The result list from clc public ip call
+        """
+        changed = False
+        results = []
+        changed_server_ids = []
+        servers = self._get_servers_from_clc(
+            server_ids,
+            'Failed to obtain server list from the CLC API')
+        servers_to_change = [
+            server for server in servers if len(
+                server.PublicIPs().public_ips) > 0]
+        for server in servers_to_change:
+            if not self.module.check_mode:
+                result = self._remove_publicip_from_server(server)
+                results.append(result)
+            changed_server_ids.append(server.id)
+            changed = True
+        return changed, changed_server_ids, results
+
+    def _remove_publicip_from_server(self, server):
+        try:
+            for ip_address in server.PublicIPs().public_ips:
+                    result = ip_address.Delete()
+        except CLCException, ex:
+            self.module.fail_json(msg='Failed to remove public ip from the server : {0}. {1}'.format(
+                server.id, ex.response_text
+            ))
+        return result
+
+    def _wait_for_requests_to_complete(self, requests_lst):
+        """
+        Waits until the CLC requests are complete if the wait argument is True
+        :param requests_lst: The list of CLC request objects
+        :return: none
+        """
+        if not self.module.params['wait']:
+            return
+        for request in requests_lst:
+            request.WaitUntilComplete()
+            for request_details in request.requests:
+                if request_details.Status() != 'succeeded':
+                    self.module.fail_json(
+                        msg='Unable to process public ip request')
+
+    def _set_clc_credentials_from_env(self):
+        """
+        Set the CLC Credentials on the sdk by reading environment variables
+        :return: none
+        """
+        env = os.environ
+        v2_api_token = env.get('CLC_V2_API_TOKEN', False)
+        v2_api_username = env.get('CLC_V2_API_USERNAME', False)
+        v2_api_passwd = env.get('CLC_V2_API_PASSWD', False)
+        clc_alias = env.get('CLC_ACCT_ALIAS', False)
+        api_url = env.get('CLC_V2_API_URL', False)
+
+        if api_url:
+            self.clc.defaults.ENDPOINT_URL_V2 = api_url
+
+        if v2_api_token and clc_alias:
+            self.clc._LOGIN_TOKEN_V2 = v2_api_token
+            self.clc._V2_ENABLED = True
+            self.clc.ALIAS = clc_alias
+        elif v2_api_username and v2_api_passwd:
+            self.clc.v2.SetCredentials(
+                api_username=v2_api_username,
+                api_passwd=v2_api_passwd)
+        else:
+            return self.module.fail_json(
+                msg="You must set the CLC_V2_API_USERNAME and CLC_V2_API_PASSWD "
+                    "environment variables")
+
+    def _get_servers_from_clc(self, server_ids, message):
+        """
+        Gets list of servers form CLC api
+        """
+        try:
+            return self.clc.v2.Servers(server_ids).servers
+        except CLCException as exception:
+            self.module.fail_json(msg=message + ': %s' % exception)
+
+    @staticmethod
+    def _set_user_agent(clc):
+        if hasattr(clc, 'SetRequestsSession'):
+            agent_string = "ClcAnsibleModule/" + __version__
+            ses = requests.Session()
+            ses.headers.update({"Api-Client": agent_string})
+            ses.headers['User-Agent'] += " " + agent_string
+            clc.SetRequestsSession(ses)
+
+
+def main():
+    """
+    The main function.  Instantiates the module and calls process_request.
+    :return: none
+    """
+    module = AnsibleModule(
+        argument_spec=ClcPublicIp._define_module_argument_spec(),
+        supports_check_mode=True
+    )
+    clc_public_ip = ClcPublicIp(module)
+    clc_public_ip.process_request()
+
+from ansible.module_utils.basic import *  # pylint: disable=W0614
+if __name__ == '__main__':
+    main()