def find_cheapest_subnet_price( batch_job_parm_item, profile_name=None ):
""" Find cheapest subnet and price
:param batch_job_parm_item:
:param profile_name: (Default value = None)
:return: cheapest_subnet, bid_price, spot_cheapest_item
"""
bid_price = -1.0
cheapest_subnet = None
spot_cheapest_item = None
spot_cheapest_items = find_spot_cheapest_prices( instance_type=batch_job_parm_item.instance_type,
product_description='Linux/UNIX',
profile_name=profile_name,
region_filter=batch_job_parm_item.spot_query_region_names,
max_bid=batch_job_parm_item.spot_query_max_bid)
if len(spot_cheapest_items) > 0:
spot_cheapest_item = spot_cheapest_items[0]
spot_query_regions_azs_subnets = batch_job_parm_item.spot_query_regions_azs_subnets
cheapest_subnet = None
if spot_cheapest_item.region.name in spot_query_regions_azs_subnets:
azs_subnets = spot_query_regions_azs_subnets[ spot_cheapest_item.region.name ]
if spot_cheapest_item.zone.name in azs_subnets:
cheapest_subnet = azs_subnets[ spot_cheapest_item.zone.name ]
bid_price = calc_bid_price( spot_cheapest_item.price )
return cheapest_subnet, bid_price, spot_cheapest_item
def submit_request_spot_instances( spot_master_item, dynamodb_conn, profile_name=None ):
"""
:param spot_master_item:
:param dynamodb_conn:
:param profile_name: (Default value = None)
"""
spot_instance_requests = None
bid_price = -1.0
cheapest_subnet = None
spot_batch_job_parm_table = Table(awsspotbatch.common.const.SPOT_BATCH_JOB_PARM_TABLE_NAME, connection=dynamodb_conn )
spot_batch_job_parm_item = spot_batch_job_parm_table.get_item( spot_master_uuid=spot_master_item[TableSpotMaster.spot_master_uuid] )
batch_job_parm_item = BatchJobParmItem( stringParmFile=spot_batch_job_parm_item[TableSpotBatchJobParm.raw_batch_job_parm_item] )
spot_cheapest_items = find_spot_cheapest_prices( instance_type=batch_job_parm_item.instance_type,
product_description='Linux/UNIX',
profile_name=profile_name,
region_filter=batch_job_parm_item.spot_query_region_names,
max_bid=batch_job_parm_item.spot_query_max_bid)
if len(spot_cheapest_items) > 0:
spot_cheapest_item = spot_cheapest_items[0]
spot_query_regions_azs_subnets = batch_job_parm_item.spot_query_regions_azs_subnets
cheapest_subnet = None
if spot_cheapest_item.region.name in spot_query_regions_azs_subnets:
azs_subnets = spot_query_regions_azs_subnets[ spot_cheapest_item.region.name ]
if spot_cheapest_item.zone.name in azs_subnets:
cheapest_subnet = azs_subnets[ spot_cheapest_item.zone.name ]
bid_price = calc_bid_price( spot_cheapest_item.price )
valid_until = datetime.datetime.utcnow() + datetime.timedelta( minutes=batch_job_parm_item.spot_request_valid_for_minutes )
valid_until_iso = valid_until.isoformat()
ec2_conn = awsext.ec2.connect_to_region( spot_cheapest_item.region.name )
spot_instance_requests = ec2_conn.request_spot_instances(
bid_price,
image_id=batch_job_parm_item.ami_id,
count=batch_job_parm_item.num_instances,
type='one-time',
dry_run=batch_job_parm_item.dry_run,
valid_until=valid_until_iso,
user_data=None,
instance_type=spot_cheapest_item.instance_type,
placement=spot_cheapest_item.zone.name,
instance_profile_name=spot_master_item[ TableSpotMaster.role_name ],
key_name=spot_master_item[ TableSpotMaster.kp_name ],
security_group_ids=[ spot_master_item[ TableSpotMaster.sg_id ] ],
subnet_id=cheapest_subnet,
availability_zone_group='single',
)
return spot_instance_requests, bid_price, cheapest_subnet
