Merge pull request #2021 from h3biomed/enis_at_launch

ec2: allow ENIs to be specified at instance launch

cloud/amazon/ec2.py

@@ -240,6 +240,13 @@ options:
     required: false
     default: null
     aliases: []
+  network_interfaces:
+    version_added: "2.0"
+    description:
+      - A list of existing network interfaces to attach to the instance at launch. When specifying existing network interfaces, none of the assign_public_ip, private_ip, vpc_subnet_id, group, or group_id parameters may be used. (Those parameters are for creating a new network interface at launch.)
+    required: false
+    default: null
+    aliases: ['network_interface']
 
 author:
     - "Tim Gerla (@tgerla)"
@@ -352,6 +359,19 @@ EXAMPLES = '''
     vpc_subnet_id: subnet-29e63245
     assign_public_ip: yes
 
+# Examples using pre-existing network interfaces
+- ec2:
+    key_name: mykey
+    instance_type: t2.small
+    image: ami-f005ba11
+    network_interface: eni-deadbeef
+
+- ec2:
+    key_name: mykey
+    instance_type: t2.small
+    image: ami-f005ba11
+    network_interfaces: ['eni-deadbeef', 'eni-5ca1ab1e']
+
 # Launch instances, runs some tasks
 # and then terminate them
 
@@ -826,6 +846,7 @@ def create_instances(module, ec2, vpc, override_count=None):
     count_tag = module.params.get('count_tag')
     source_dest_check = module.boolean(module.params.get('source_dest_check'))
     termination_protection = module.boolean(module.params.get('termination_protection'))
+    network_interfaces = module.params.get('network_interfaces')
 
     # group_id and group_name are exclusive of each other
     if group_id and group_name:
@@ -926,11 +947,23 @@ def create_instances(module, ec2, vpc, override_count=None):
                     interfaces = boto.ec2.networkinterface.NetworkInterfaceCollection(interface)
                     params['network_interfaces'] = interfaces
             else:
-                params['subnet_id'] = vpc_subnet_id
+                if network_interfaces:
-                if vpc_subnet_id:
+                    if isinstance(network_interfaces, basestring):
-                    params['security_group_ids'] = group_id
+                        network_interfaces = [network_interfaces]
+                    interfaces = []
+                    for i, network_interface_id in enumerate(network_interfaces):
+                        interface = boto.ec2.networkinterface.NetworkInterfaceSpecification(
+                            network_interface_id=network_interface_id,
+                            device_index=i)
+                        interfaces.append(interface)
+                    params['network_interfaces'] = \
+                        boto.ec2.networkinterface.NetworkInterfaceCollection(*interfaces)
                 else:
-                    params['security_groups'] = group_name
+                    params['subnet_id'] = vpc_subnet_id
+                    if vpc_subnet_id:
+                        params['security_group_ids'] = group_id
+                    else:
+                        params['security_groups'] = group_name
 
             if volumes:
                 bdm = BlockDeviceMapping()
@@ -1284,6 +1317,7 @@ def main():
             volumes = dict(type='list'),
             ebs_optimized = dict(type='bool', default=False),
             tenancy = dict(default='default'),
+            network_interfaces = dict(type='list', aliases=['network_interface'])
         )
     )
 
@@ -1292,7 +1326,12 @@ def main():
         mutually_exclusive = [
                                 ['exact_count', 'count'],
                                 ['exact_count', 'state'],
-                                ['exact_count', 'instance_ids']
+                                ['exact_count', 'instance_ids'],
+                                ['network_interfaces', 'assign_public_ip'],
+                                ['network_interfaces', 'group'],
+                                ['network_interfaces', 'group_id'],
+                                ['network_interfaces', 'private_ip'],
+                                ['network_interfaces', 'vpc_subnet_id'],
                              ],
     )