Refactor ec2_remote_facts to use filters

cloud/amazon/ec2_remote_facts.py

@@ -16,137 +16,149 @@
 DOCUMENTATION = '''
 ---
 module: ec2_remote_facts
-short_description: ask EC2 for information about other instances.
+short_description: Gather facts about ec2 instances in AWS
 description:
-    - Only supports search for hostname by tags currently. Looking to add more later.
+    - Gather facts about ec2 instances in AWS
 version_added: "2.0"
 options:
-  key:
+  filters:
     description:
-      - instance tag key in EC2
-    required: false
-    default: Name
-  value:
-    description:
-      - instance tag value in EC2
+      - A dict of filters to apply. Each dict item consists of a filter key and a filter value. See U(http://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeInstances.html) for possible filters.
     required: false
     default: null
-  lookup:
-    description:
-      - What type of lookup to use when searching EC2 instance info.
-    required: false
-    default: tags
-  region:
-    description:
-      - EC2 region that it should look for tags in
-    required: false
-    default: All Regions
-  ignore_state:
-    description:
-      - instance state that should be ignored such as terminated.
-    required: false
-    default: terminated
 author:
     - "Michael Schuett (@michaeljs1990)"
-extends_documentation_fragment: aws
+extends_documentation_fragment:
+    - aws
+    - ec2
 '''
 
 EXAMPLES = '''
 # Note: These examples do not set authentication details, see the AWS Guide for details.
 
-# Basic provisioning example
+# Gather facts about all ec2 instances
 - ec2_remote_facts:
-    key: mykey
-    value: myvalue
-  register: servers
+
+# Gather facts about all running ec2 instances with a tag of Name:Example
+- ec2_remote_facts:
+    filters:
+      instance-state-name: running
+      "tag:Name": Example
+      
+# Gather facts about instance i-123456
+- ec2_remote_facts:
+    filters:
+      instance-id: i-123456
+      
+# Gather facts about all instances in vpc-123456 that are t2.small type
+- ec2_remote_facts:
+    filters:
+      vpc-id: vpc-123456
+      instance-type: t2.small
+
 '''
+
 try:
-    import boto
     import boto.ec2
+    from boto.exception import BotoServerError
     HAS_BOTO = True
 except ImportError:
     HAS_BOTO = False
 
-def todict(obj, classkey=None):
-    if isinstance(obj, dict):
-        data = {}
-        for (k, v) in obj.items():
-            data[k] = todict(v, classkey)
-        return data
-    elif hasattr(obj, "_ast"):
-        return todict(obj._ast())
-    elif hasattr(obj, "__iter__"):
-        return [todict(v, classkey) for v in obj]
-    elif hasattr(obj, "__dict__"):
-        # This Class causes a recursive loop and at this time is not worth
-        # debugging. If it's useful later I'll look into it.
-        if not isinstance(obj, boto.ec2.blockdevicemapping.BlockDeviceType):
-            data = dict([(key, todict(value, classkey))
-                for key, value in obj.__dict__.iteritems()
-                if not callable(value) and not key.startswith('_')])
-            if classkey is not None and hasattr(obj, "__class__"):
-                data[classkey] = obj.__class__.__name__
-            return data
-    else:
-        return obj
+def get_instance_info(instance):
+    
+    # Get groups
+    groups = []
+    for group in instance.groups:
+      groups.append({ 'id': group.id, 'name': group.name }.copy())
+
+    # Get interfaces
+    interfaces = []
+    for interface in instance.interfaces:
+      interfaces.append({ 'id': interface.id, 'mac_address': interface.mac_address }.copy())
+ 
+    instance_info = { 'id': instance.id,
+                    'kernel': instance.kernel,
+                    'instance_profile': instance.instance_profile,
+                    'root_device_type': instance.root_device_type,
+                    'private_dns_name': instance.private_dns_name,
+                    'public_dns_name': instance.public_dns_name,
+                    'ebs_optimized': instance.ebs_optimized,
+                    'client_token': instance.client_token,
+                    'virtualization_type': instance.virtualization_type,
+                    'architecture': instance.architecture,
+                    'ramdisk': instance.ramdisk,
+                    'tags': instance.tags,
+                    'key_name': instance.key_name,
+                    'source_destination_check': instance.sourceDestCheck,
+                    'image_id': instance.image_id,
+                    'groups': groups,
+                    'interfaces': interfaces,
+                    'spot_instance_request_id': instance.spot_instance_request_id,
+                    'requester_id': instance.requester_id,
+                    'monitoring_state': instance.monitoring_state,
+                    'placement': {
+                                  'tenancy': instance._placement.tenancy,
+                                  'zone': instance._placement.zone
+                                 },
+                    'ami_launch_index': instance.ami_launch_index,
+                    'launch_time': instance.launch_time,
+                    'hypervisor': instance.hypervisor,
+                    'region': instance.region.name,
+                    'persistent': instance.persistent,
+                    'private_ip_address': instance.private_ip_address,
+                    'state': instance._state.name,
+                    'vpc_id': instance.vpc_id,
+                  }
+
+    return instance_info
+    
+
+def list_ec2_instances(connection, module):
+    
+    filters = module.params.get("filters")
+    instance_dict_array = []
     
-def get_all_ec2_regions(module):
     try:
-        regions = boto.ec2.regions()
-    except Exception, e:
-        module.fail_json('Boto authentication issue: %s' % e)
+        all_instances = connection.get_only_instances(filters=filters)
+    except BotoServerError as e:
+        module.fail_json(msg=e.message)
         
-    return regions
+    for instance in all_instances:
+        instance_dict_array.append(get_instance_info(instance))
+        
+    module.exit_json(instances=instance_dict_array)
     
-# Connect to ec2 region
-def connect_to_region(region, module):
-    try:
-        conn = boto.ec2.connect_to_region(region.name)
-    except Exception, e:
-        print module.jsonify('error connecting to region: ' + region.name)
-        conn = None
-    # connect_to_region will fail "silently" by returning
-    # None if the region name is wrong or not supported
-    return conn
 
 def main():
-    module = AnsibleModule(
-        argument_spec = dict(
-            key = dict(default='Name'),
-            value = dict(),
-            lookup = dict(default='tags'),
-            ignore_state = dict(default='terminated'),
-            region = dict(),
+    argument_spec = ec2_argument_spec()
+    argument_spec.update(
+        dict(
+            filters = dict(default=None, type='dict')
         )
     )
 
+    module = AnsibleModule(argument_spec=argument_spec)
+
     if not HAS_BOTO:
         module.fail_json(msg='boto required for this module')
 
-    server_info = list()
+    region, ec2_url, aws_connect_params = get_aws_connection_info(module)
 
-    for region in get_all_ec2_regions(module):
-        conn = connect_to_region(region, module)
+    if region:
         try:
-            # Run when looking up by tag names, only returning hostname currently
-            if module.params.get('lookup') == 'tags':
-                ec2_key = 'tag:' + module.params.get('key')
-                ec2_value = module.params.get('value')
-                reservations = conn.get_all_instances(filters={ec2_key : ec2_value})
-                for instance in [i for r in reservations for i in r.instances]:
-                    if instance.private_ip_address != None:
-                        instance.hostname = 'ip-' + instance.private_ip_address.replace('.', '-')
-                    if instance._state.name not in module.params.get('ignore_state'):
-                        server_info.append(todict(instance))
-        except:
-            print module.jsonify('error getting instances from: ' + region.name)
+            connection = connect_to_aws(boto.ec2, region, **aws_connect_params)
+        except (boto.exception.NoAuthHandlerFound, StandardError), e:
+            module.fail_json(msg=str(e))
+    else:
+        module.fail_json(msg="region must be specified")
         
-    ec2_facts_result = dict(changed=True, ec2=server_info)
-
-    module.exit_json(**ec2_facts_result)
+    list_ec2_instances(connection, module)
 
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.ec2 import *
 
-main()
+if __name__ == '__main__':
+    main()
+