Add ec2_vpc_igw module.

cloud/amazon/ec2_vpc_igw.py

@@ -0,0 +1,189 @@
+#!/usr/bin/python
+# 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: ec2_vpc_igw
+short_description: configure AWS virtual private clouds
+description:
+    - Create or terminates AWS internat gateway in a virtual private cloud. '''
+'''This module has a dependency on python-boto.
+version_added: "1.8"
+options:
+  vpc_id:
+    description:
+      - "The VPC ID for which to create or remove the Internet Gateway."
+    required: true
+  state:
+    description:
+      - Create or terminate the IGW
+    required: true
+    default: present
+    aliases: []
+  region:
+    description:
+      - region in which the resource exists.
+    required: false
+    default: null
+    aliases: ['aws_region', 'ec2_region']
+  aws_secret_key:
+    description:
+      - AWS secret key. If not set then the value of the AWS_SECRET_KEY'''
+''' environment variable is used.
+    required: false
+    default: None
+    aliases: ['ec2_secret_key', 'secret_key' ]
+  aws_access_key:
+    description:
+      - AWS access key. If not set then the value of the AWS_ACCESS_KEY'''
+''' environment variable is used.
+    required: false
+    default: None
+    aliases: ['ec2_access_key', 'access_key' ]
+  validate_certs:
+    description:
+      - When set to "no", SSL certificates will not be validated for boto'''
+''' versions >= 2.6.0.
+    required: false
+    default: "yes"
+    choices: ["yes", "no"]
+    aliases: []
+    version_added: "1.5"
+
+requirements: [ "boto" ]
+author: Robert Estelle
+'''
+
+EXAMPLES = '''
+# Note: None of these examples set aws_access_key, aws_secret_key, or region.
+# It is assumed that their matching environment variables are set.
+
+# Ensure that the VPC has an Internet Gateway.
+# The Internet Gateway ID is can be accessed via {{igw.gateway_id}} for use
+# in setting up NATs etc.
+      local_action:
+        module: ec2_vpc_igw
+        vpc_id: {{vpc.vpc_id}}
+        region: {{vpc.vpc.region}}
+        state: present
+      register: igw
+'''
+
+
+import sys
+
+try:
+    import boto.ec2
+    import boto.vpc
+    from boto.exception import EC2ResponseError
+except ImportError:
+    print "failed=True msg='boto required for this module'"
+    sys.exit(1)
+
+
+class IGWExcepton(Exception):
+    pass
+
+
+def ensure_igw_absent(vpc_conn, vpc_id, check_mode):
+    igws = vpc_conn.get_all_internet_gateways(
+        filters={'attachment.vpc-id': vpc_id})
+
+    if not igws:
+        return {'changed': False}
+
+    if check_mode:
+        return {'changed': True}
+
+    for igw in igws:
+        try:
+            vpc_conn.detach_internet_gateway(igw.id, vpc_id)
+            vpc_conn.delete_internet_gateway(igw.id)
+        except EC2ResponseError as e:
+            raise IGWExcepton('Unable to delete Internet Gateway, error: {0}'
+                              .format(e))
+
+    return {'changed': True}
+
+
+def ensure_igw_present(vpc_conn, vpc_id, check_mode):
+    igws = vpc_conn.get_all_internet_gateways(
+        filters={'attachment.vpc-id': vpc_id})
+
+    if len(igws) > 1:
+        raise IGWExcepton(
+            'EC2 returned more than one Internet Gateway for VPC {0}, aborting'
+            .format(vpc_id))
+
+    if igws:
+        return {'changed': False, 'gateway_id': igws[0].id}
+    else:
+        if check_mode:
+            return {'changed': True, 'gateway_id': None}
+
+        try:
+            igw = vpc_conn.create_internet_gateway()
+            vpc_conn.attach_internet_gateway(igw.id, vpc_id)
+            return {'changed': True, 'gateway_id': igw.id}
+        except EC2ResponseError as e:
+            raise IGWExcepton('Unable to create Internet Gateway, error: {0}'
+                              .format(e))
+
+
+def main():
+    argument_spec = ec2_argument_spec()
+    argument_spec.update({
+        'vpc_id': {'required': True},
+        'state': {'choices': ['present', 'absent'], 'default': 'present'},
+    })
+    module = AnsibleModule(
+        argument_spec=argument_spec,
+        supports_check_mode=True,
+    )
+
+    ec2_url, aws_access_key, aws_secret_key, region = get_ec2_creds(module)
+    if not region:
+        module.fail_json(msg='Region must be specified')
+
+    try:
+        vpc_conn = boto.vpc.connect_to_region(
+            region,
+            aws_access_key_id=aws_access_key,
+            aws_secret_access_key=aws_secret_key
+        )
+    except boto.exception.NoAuthHandlerFound as e:
+        module.fail_json(msg=str(e))
+
+    vpc_id = module.params.get('vpc_id')
+    state = module.params.get('state', 'present')
+
+    try:
+        if state == 'present':
+            result = ensure_igw_present(vpc_conn, vpc_id,
+                                        check_mode=module.check_mode)
+        elif state == 'absent':
+            result = ensure_igw_absent(vpc_conn, vpc_id,
+                                       check_mode=module.check_mode)
+    except IGWExcepton as e:
+        module.fail_json(msg=str(e))
+
+    module.exit_json(**result)
+
+from ansible.module_utils.basic import *  # noqa
+from ansible.module_utils.ec2 import *  # noqa
+
+if __name__ == '__main__':
+    main()