Python yaml_attr Examples

Example #1

parser.add_argument('--yaml',
                    default='./aws.yaml',
                    help="yaml file to read (defaults to ./aws.yaml)")
args = parser.parse_args()

# Initialize dictionary for storage of globals (values that do not change,
# but are discarded when the script exits).
g = {}

#PC * Parse YAML file.
y = yaml_lib.parse_yaml(args.yaml)

#PC * Connect to region specified in YAML ("region").
# (i.e., get VPCConnection and EC2Connection objects).
# FIXME: validate that the region exists
y['region'] = yaml_lib.yaml_attr(y, 'region', 'eu-west-1')
(g['vpc_conn'], g['ec2_conn']) = init_lib.init_region(y['region'])
print "Connected to region {}".format(y['region'])

#PC * Connect to VPC specified in YAML ("vpc" -> "cidr-block").
n = yaml_lib.yaml_attr(y, 'vpc', None)
n['cidr-block'] = yaml_lib.yaml_attr(n, 'cidr-block', None)
n['name'] = yaml_lib.yaml_attr(n, 'name', 'susecon')
print "Looking for VPC {}".format(n['cidr-block'])
try:
    g['vpc_obj'] = init_lib.init_vpc(g['vpc_conn'], n['cidr-block'])
except SpinupError as e:
    print "{}".format(e)
    sys.exit()

#PC * Get Salt Master subnet (first one in "subnets" list).

Example #2

File: aws.py Project: sudhakar470/ceph-auto-aws

#         "'resume', 'start', 'stop', 'suspend', 'unpause') to perform",
#    nargs='?' 
#)
args = parser.parse_args()

# Initialize dictionary for storage of globals (values that do not change,
# but are discarded when the script exits).
g = {}

#PC * Parse YAML.
y = yaml_lib.parse_yaml( args.yaml )

#PC * Connect to region specified in YAML ("region").
# (i.e., get VPCConnection and EC2Connection objects).
# FIXME: validate that the region exists
y['region'] = yaml_lib.yaml_attr( y, 'region', 'eu-west-1' )
( g['vpc_conn'], g['ec2_conn'] ) = init_lib.init_region( y['region'] )
print "Connected to region {}".format( y['region'] )

#PC * Connect to VPC specified in YAML ("vpc" -> "cidr-block").
n = yaml_lib.yaml_attr( y, 'vpc', None )
n['cidr-block'] = yaml_lib.yaml_attr( n, 'cidr-block', None )
n['name'] = yaml_lib.yaml_attr( n, 'name', 'susecon' )
print "Looking for VPC {}".format(n['cidr-block'])
g['vpc_obj'] = init_lib.init_vpc( g['vpc_conn'], n['cidr-block'] )

#PC * Clobber existing VPC tag with YAML value ("vpc" -> "name").
init_lib.update_tag( g['vpc_obj'], 'Name', n['name'] )
print "Found VPC {} (Name: {})".format(n['cidr-block'], n['name'])

#PC * Look at YAML "subnets" and see how many there are.

Example #3

File: start.py Project: smithfarm/ceph-auto-aws

# Verify that delegate number was given on command line and that it is an integer.
if args.delegate is None:
    raise SpinupError( "Must provide delegate number to start" )
delegate = int(args.delegate)

# Initialize dictionary for storage of globals (values that do not change,
# but are discarded when the script exits).
g = {}

#PC * Parse YAML file.
y = yaml_lib.parse_yaml( args.yaml )

#PC * Connect to region specified in YAML ("region").
# (i.e., get VPCConnection and EC2Connection objects).
# FIXME: validate that the region exists
y['region'] = yaml_lib.yaml_attr( y, 'region', 'eu-west-1' )
( g['vpc_conn'], g['ec2_conn'] ) = init_lib.init_region( y['region'] )
print "Connected to region {}".format( y['region'] )

#PC * Connect to VPC specified in YAML ("vpc" -> "cidr-block").
n = yaml_lib.yaml_attr( y, 'vpc', None )
n['cidr-block'] = yaml_lib.yaml_attr( n, 'cidr-block', None )
n['name'] = yaml_lib.yaml_attr( n, 'name', 'susecon' )
print "Looking for VPC {}".format(n['cidr-block'])
g['vpc_obj'] = init_lib.init_vpc( g['vpc_conn'], n['cidr-block'] )

#PC * Get Salt Master subnet (first one in "subnets" list).
g['master_subnet'] = init_lib.init_subnet( 
    g['vpc_conn'],
    g['vpc_obj'].id,
    y['subnets'][0]['cidr-block']