def _getCurrentAWSZone(spotBid=None, nodeType=None, ctx=None):
zone = None
try:
import boto
from boto.utils import get_instance_metadata
except ImportError:
pass
else:
zone = os.environ.get('TOIL_AWS_ZONE', None)
if not zone and runningOnEC2():
try:
zone = get_instance_metadata()['placement']['availability-zone']
except KeyError:
pass
if not zone and spotBid:
# if spot bid is present, all the other parameters must be as well
assert bool(spotBid) == bool(nodeType) == bool(ctx)
# if the zone is unset and we are using the spot market, optimize our
# choice based on the spot history
return optimize_spot_bid(ctx=ctx, instance_type=nodeType, spot_bid=float(spotBid))
if not zone:
zone = boto.config.get('Boto', 'ec2_region_name')
if zone is not None:
zone += 'a' # derive an availability zone in the region
return zone
def _getCurrentAWSZone(spotBid=None, nodeType=None, ctx=None):
zone = None
try:
import boto
from boto.utils import get_instance_metadata
except ImportError:
pass
else:
zone = os.environ.get('TOIL_AWS_ZONE', None)
if not zone and runningOnEC2():
try:
zone = get_instance_metadata()['placement']['availability-zone']
except KeyError:
pass
if not zone and spotBid:
# if spot bid is present, all the other parameters must be as well
assert bool(spotBid) == bool(nodeType) == bool(ctx)
# if the zone is unset and we are using the spot market, optimize our
# choice based on the spot history
return optimize_spot_bid(ctx=ctx, instance_type=nodeType, spot_bid=float(spotBid))
if not zone:
zone = boto.config.get('Boto', 'ec2_region_name')
if zone is not None:
zone += 'a' # derive an availability zone in the region
return zone