Adding the ability to associate eips with network interfaces

cloud/amazon/ec2_eip.py

@@ -26,6 +26,11 @@ options:
     description:
       - The EC2 instance id
     required: false
+  network_interface_id:
+    description:
+      - The Elastic Network Interface (ENI) id
+    required: false
+    version_added: "2.0"
   public_ip:
     description:
       - The elastic IP address to associate with the instance.
@@ -57,7 +62,6 @@ options:
     required: false
     default: false
     version_added: "1.6"
-
 extends_documentation_fragment: aws
 author: "Lorin Hochstein (@lorin) <lorin@nimbisservices.com>"
 notes:
@@ -72,22 +76,21 @@ notes:
 EXAMPLES = '''
 - name: associate an elastic IP with an instance
   ec2_eip: instance_id=i-1212f003 ip=93.184.216.119
-
+- name: associate an elastic IP with a device
+  ec2_eip: network_interface_id=eni-c8ad70f3 ip=93.184.216.119
 - name: disassociate an elastic IP from an instance
   ec2_eip: instance_id=i-1212f003 ip=93.184.216.119 state=absent
-
+- name: disassociate an elastic IP with a device
+  ec2_eip: network_interface_id=eni-c8ad70f3 ip=93.184.216.119 state=absent
 - name: allocate a new elastic IP and associate it with an instance
   ec2_eip: instance_id=i-1212f003
-
 - name: allocate a new elastic IP without associating it to anything
   action: ec2_eip
   register: eip
 - name: output the IP
   debug: msg="Allocated IP is {{ eip.public_ip }}"
-
 - name: another way of allocating an elastic IP without associating it to anything
   ec2_eip: state='present'
-
 - name: provision new instances with ec2
   ec2: keypair=mykey instance_type=c1.medium image=emi-40603AD1 wait=yes'''
 ''' group=webserver count=3
@@ -95,7 +98,6 @@ EXAMPLES = '''
 - name: associate new elastic IPs with each of the instances
   ec2_eip: "instance_id={{ item }}"
   with_items: ec2.instance_ids
-
 - name: allocate a new elastic IP inside a VPC in us-west-2
   ec2_eip: region=us-west-2 in_vpc=yes
   register: eip
@@ -113,27 +115,27 @@ except ImportError:
 class EIPException(Exception):
     pass
 
-
+def associate_ip_and_device(ec2, address, device_id, check_mode, isinstance=True):
-def associate_ip_and_instance(ec2, address, instance_id, check_mode):
+    if address_is_associated_with_device(ec2, address, device_id, isinstance):
-    if address_is_associated_with_instance(ec2, address, instance_id):
         return {'changed': False}
 
     # If we're in check mode, nothing else to do
     if not check_mode:
-        if address.domain == 'vpc':
+        if isinstance:
-            res = ec2.associate_address(instance_id,
+            if address.domain == "vpc":
-                                        allocation_id=address.allocation_id)
+                res = ec2.associate_address(device_id, allocation_id=address.allocation_id)
             else:
-            res = ec2.associate_address(instance_id,
+                res = ec2.associate_address(device_id, public_ip=address.public_ip)
-                                        public_ip=address.public_ip)
+        else:
+            res = ec2.associate_address(network_interface_id=device_id, allocation_id=address.allocation_id)
         if not res:
             raise EIPException('association failed')
 
     return {'changed': True}
 
 
-def disassociate_ip_and_instance(ec2, address, instance_id, check_mode):
+def disassociate_ip_and_device(ec2, address, device_id, check_mode, isinstance=True):
-    if not address_is_associated_with_instance(ec2, address, instance_id):
+    if not address_is_associated_with_device(ec2, address, device_id, isinstance):
         return {'changed': False}
 
     # If we're in check mode, nothing else to do
@@ -158,24 +160,33 @@ def _find_address_by_ip(ec2, public_ip):
             raise
 
 
-def _find_address_by_instance_id(ec2, instance_id):
+def _find_address_by_device_id(ec2, device_id, isinstance=True):
-    addresses = ec2.get_all_addresses(None, {'instance-id': instance_id})
+    if isinstance:
+        addresses = ec2.get_all_addresses(None, {'instance-id': device_id})
+    else:
+        addresses = ec2.get_all_addresses(None, {'network-interface-id': device_id})
     if addresses:
         return addresses[0]
 
 
-def find_address(ec2, public_ip, instance_id):
+def find_address(ec2, public_ip, device_id, isinstance=True):
     """ Find an existing Elastic IP address """
     if public_ip:
         return _find_address_by_ip(ec2, public_ip)
-    elif instance_id:
+    elif device_id and isinstance:
-        return _find_address_by_instance_id(ec2, instance_id)
+        return _find_address_by_device_id(ec2, device_id)
+    elif device_id:
+        return _find_address_by_device_id(ec2, device_id, isinstance=False)
 
 
-def address_is_associated_with_instance(ec2, address, instance_id):
+def address_is_associated_with_device(ec2, address, device_id, isinstance=True):
-    """ Check if the elastic IP is currently associated with the instance """
+    """ Check if the elastic IP is currently associated with the device """
+    address = ec2.get_all_addresses(address.public_ip)
     if address:
-        return address and address.instance_id == instance_id
+        if isinstance:
+            return address and address[0].instance_id == device_id
+        else:
+            return address and address[0].network_interface_id == device_id
     return False
 
 
@@ -186,7 +197,7 @@ def allocate_address(ec2, domain, reuse_existing_ip_allowed):
         all_addresses = ec2.get_all_addresses(filters=domain_filter)
 
         unassociated_addresses = [a for a in all_addresses
-                                  if not a.instance_id]
+                                  if not a.device_id]
         if unassociated_addresses:
             return unassociated_addresses[0]
 
@@ -204,21 +215,33 @@ def release_address(ec2, address, check_mode):
     return {'changed': True}
 
 
-def find_instance(ec2, instance_id):
+def find_device(ec2, device_id, isinstance=True):
     """ Attempt to find the EC2 instance and return it """
 
-    reservations = ec2.get_all_reservations(instance_ids=[instance_id])
+    if isinstance:
+        try:
+            reservations = ec2.get_all_reservations(instance_ids=[device_id])
+        except boto.exception.EC2ResponseError, e:
+            module.fail_json(msg=str(e))
 
         if len(reservations) == 1:
             instances = reservations[0].instances
             if len(instances) == 1:
                 return instances[0]
+    else:
+        try:
+            interfaces = ec2.get_all_network_interfaces(network_interface_ids=[device_id])
+        except boto.exception.EC2ResponseError, e:
+            module.fail_json(msg=str(e))
+
+        if len(interfaces) == 1:
+            return interfaces[0]
 
-    raise EIPException("could not find instance" + instance_id)
+    raise EIPException("could not find instance" + device_id)
 
 
-def ensure_present(ec2, domain, address, instance_id,
+def ensure_present(ec2, domain, address, device_id,
-                   reuse_existing_ip_allowed, check_mode):
+                   reuse_existing_ip_allowed, check_mode, isinstance=True):
     changed = False
 
     # Return the EIP object since we've been given a public IP
@@ -229,28 +252,39 @@ def ensure_present(ec2, domain, address, instance_id,
         address = allocate_address(ec2, domain, reuse_existing_ip_allowed)
         changed = True
 
-    if instance_id:
+    if device_id:
         # Allocate an IP for instance since no public_ip was provided
-        instance = find_instance(ec2, instance_id)
+        if isinstance:
+            instance = find_device(ec2, device_id)
+            # Associate address object (provided or allocated) with instance
+            assoc_result = associate_ip_and_device(ec2, address, device_id,
+                                                 check_mode)
+        else:
+            instance = find_device(ec2, device_id, isinstance=False)
+            # Associate address object (provided or allocated) with instance
+            assoc_result = associate_ip_and_device(ec2, address, device_id,
+                                                 check_mode, isinstance=False)
+
         if instance.vpc_id:
             domain = 'vpc'
 
-        # Associate address object (provided or allocated) with instance
-        assoc_result = associate_ip_and_instance(ec2, address, instance_id,
-                                                 check_mode)
         changed = changed or assoc_result['changed']
 
     return {'changed': changed, 'public_ip': address.public_ip}
 
 
-def ensure_absent(ec2, domain, address, instance_id, check_mode):
+def ensure_absent(ec2, domain, address, device_id, check_mode, isinstance=True):
     if not address:
         return {'changed': False}
 
     # disassociating address from instance
-    if instance_id:
+    if device_id:
-        return disassociate_ip_and_instance(ec2, address, instance_id,
+        if isinstance:
+            return disassociate_ip_and_device(ec2, address, device_id,
                                                 check_mode)
+        else:
+            return disassociate_ip_and_device(ec2, address, device_id,
+                                                check_mode, isinstance=False)
     # releasing address
     else:
         return release_address(ec2, address, check_mode)
@@ -260,6 +294,7 @@ def main():
     argument_spec = ec2_argument_spec()
     argument_spec.update(dict(
         instance_id=dict(required=False),
+        network_interface_id=dict(required=False),
         public_ip=dict(required=False, aliases=['ip']),
         state=dict(required=False, default='present',
                    choices=['present', 'absent']),
@@ -280,6 +315,7 @@ def main():
     ec2 = ec2_connect(module)
 
     instance_id = module.params.get('instance_id')
+    network_interface_id = module.params.get('network_interface_id')
     public_ip = module.params.get('public_ip')
     state = module.params.get('state')
     in_vpc = module.params.get('in_vpc')
@@ -287,20 +323,39 @@ def main():
     reuse_existing_ip_allowed = module.params.get('reuse_existing_ip_allowed')
 
     try:
+        if network_interface_id:
+            address = find_address(ec2, public_ip, network_interface_id, isinstance=False)
+        elif instance_id:
             address = find_address(ec2, public_ip, instance_id)
+        else:
+            address = False
 
         if state == 'present':
+            if instance_id:
                 result = ensure_present(ec2, domain, address, instance_id,
                                     reuse_existing_ip_allowed,
                                     module.check_mode)
+            elif network_interface_id:
+                result = ensure_present(ec2, domain, address, network_interface_id,
+                                    reuse_existing_ip_allowed,
+                                    module.check_mode, isinstance=False)
+            else:
+                address = allocate_address(ec2, domain, reuse_existing_ip_allowed)
+                result = {'changed': True, 'public_ip': address.public_ip}
         else:
+            if network_interface_id:
+                result = ensure_absent(ec2, domain, address, network_interface_id, module.check_mode, isinstance=False)
+            elif instance_id:
                 result = ensure_absent(ec2, domain, address, instance_id, module.check_mode)
+            else:
+                address = find_address(ec2, public_ip, None)
+                result = release_address(ec2, address, module.check_mode)
+
     except (boto.exception.EC2ResponseError, EIPException) as e:
         module.fail_json(msg=str(e))
 
     module.exit_json(**result)
 
-
 # import module snippets
 from ansible.module_utils.basic import *  # noqa
 from ansible.module_utils.ec2 import *  # noqa