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Add configurable option to support nested inventory groups.

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This commit is contained in:
Chris Church 2014-07-01 15:29:39 -04:00
parent 14cf3c4d2a
commit 4036df11cf
2 changed files with 66 additions and 12 deletions
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3
plugins/inventory/ec2.ini
View file

@ -53,3 +53,6 @@ cache_path = ~/.ansible/tmp
# seconds, a new API call will be made, and the cache file will be updated.
# To disable the cache, set this value to 0
cache_max_age = 300
# Organize groups into a nested/hierarchy instead of a flat namespace.
nested_groups = False

71
plugins/inventory/ec2.py
View file

@ -231,7 +231,11 @@ class Ec2Inventory(object):
self.cache_path_index = cache_dir + "/ansible-ec2.index"
self.cache_max_age = config.getint('ec2', 'cache_max_age')
# Configure nested groups instead of flat namespace.
if config.has_option('ec2', 'nested_groups'):
self.nested_groups = config.getboolean('ec2', 'nested_groups')
else:
self.nested_groups = False
def parse_cli_args(self):
''' Command line argument processing '''
@ -321,7 +325,6 @@ class Ec2Inventory(object):
for instance in reservation.instances:
return instance
def add_instance(self, instance, region):
''' Adds an instance to the inventory and index, as long as it is
addressable '''
@ -345,25 +348,40 @@ class Ec2Inventory(object):
# Inventory: Group by instance ID (always a group of 1)
self.inventory[instance.id] = [dest]
if self.nested_groups:
self.push_group(self.inventory, 'instances', instance.id)
# Inventory: Group by region
if self.nested_groups:
self.push_group(self.inventory, 'regions', region)
else:
self.push(self.inventory, region, dest)
# Inventory: Group by availability zone
self.push(self.inventory, instance.placement, dest)
if self.nested_groups:
self.push_group(self.inventory, region, instance.placement)
# Inventory: Group by instance type
self.push(self.inventory, self.to_safe('type_' + instance.instance_type), dest)
type_name = self.to_safe('type_' + instance.instance_type)
self.push(self.inventory, type_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'types', type_name)
# Inventory: Group by key pair
if instance.key_name:
self.push(self.inventory, self.to_safe('key_' + instance.key_name), dest)
key_name = self.to_safe('key_' + instance.key_name)
self.push(self.inventory, key_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'keys', key_name)
# Inventory: Group by security group
try:
for group in instance.groups:
key = self.to_safe("security_group_" + group.name)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'security_groups', key)
except AttributeError:
print 'Package boto seems a bit older.'
print 'Please upgrade boto >= 2.3.0.'
@ -373,12 +391,17 @@ class Ec2Inventory(object):
for k, v in instance.tags.iteritems():
key = self.to_safe("tag_" + k + "=" + v)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'tags', self.to_safe("tag_" + k))
self.push_group(self.inventory, self.to_safe("tag_" + k), key)
# Inventory: Group by Route53 domain names if enabled
if self.route53_enabled:
route53_names = self.get_instance_route53_names(instance)
for name in route53_names:
self.push(self.inventory, name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'route53', name)
# Global Tag: tag all EC2 instances
self.push(self.inventory, 'ec2', dest)
@ -410,21 +433,34 @@ class Ec2Inventory(object):
# Inventory: Group by instance ID (always a group of 1)
self.inventory[instance.id] = [dest]
if self.nested_groups:
self.push_group(self.inventory, 'instances', instance.id)
# Inventory: Group by region
if self.nested_groups:
self.push_group(self.inventory, 'regions', region)
else:
self.push(self.inventory, region, dest)
# Inventory: Group by availability zone
self.push(self.inventory, instance.availability_zone, dest)
if self.nested_groups:
self.push_group(self.inventory, region, instance.availability_zone)
# Inventory: Group by instance type
self.push(self.inventory, self.to_safe('type_' + instance.instance_class), dest)
type_name = self.to_safe('type_' + instance.instance_class)
self.push(self.inventory, type_name, dest)
if self.nested_groups:
self.push_group(self.inventory, 'types', type_name)
# Inventory: Group by security group
try:
if instance.security_group:
key = self.to_safe("security_group_" + instance.security_group.name)
self.push(self.inventory, key, dest)
if self.nested_groups:
self.push_group(self.inventory, 'security_groups', key)
except AttributeError:
print 'Package boto seems a bit older.'
print 'Please upgrade boto >= 2.3.0.'
@ -432,13 +468,19 @@ class Ec2Inventory(object):
# Inventory: Group by engine
self.push(self.inventory, self.to_safe("rds_" + instance.engine), dest)
if self.nested_groups:
self.push_group(self.inventory, 'rds_engines', self.to_safe("rds_" + instance.engine))
# Inventory: Group by parameter group
self.push(self.inventory, self.to_safe("rds_parameter_group_" + instance.parameter_group.name), dest)
if self.nested_groups:
self.push_group(self.inventory, 'rds_parameter_groups', self.to_safe("rds_parameter_group_" + instance.parameter_group.name))
# Global Tag: all RDS instances
self.push(self.inventory, 'rds', dest)
self.inventory["_meta"]["hostvars"][dest] = self.get_host_info_dict_from_instance(instance)
def get_route53_records(self):
''' Get and store the map of resource records to domain names that
@ -553,14 +595,23 @@ class Ec2Inventory(object):
return self.json_format_dict(self.get_host_info_dict_from_instance(instance), True)
def push(self, my_dict, key, element):
''' Pushed an element onto an array that may not have been defined in
''' Push an element onto an array that may not have been defined in
the dict '''
if key in my_dict:
my_dict[key].append(element);
group_info = my_dict.setdefault(key, [])
if isinstance(group_info, dict):
host_list = group_info.setdefault('hosts', [])
host_list.append(element)
else:
my_dict[key] = [element]
group_info.append(element)
def push_group(self, my_dict, key, element):
''' Push a group as a child of another group. '''
parent_group = my_dict.setdefault(key, {})
if not isinstance(parent_group, dict):
parent_group = my_dict[key] = {'hosts': parent_group}
child_groups = parent_group.setdefault('children', [])
if element not in child_groups:
child_groups.append(element)
def get_inventory_from_cache(self):
''' Reads the inventory from the cache file and returns it as a JSON