def get_spot_prices(self, resource, tenant):
"""
Get the current spot price for each instance type.
"""
new_time = ProvisionerConfig().simulate_time
now = new_time.strftime('%Y-%m-%d %H:%M:%S')
start_time = (ProvisionerConfig().simulate_time -
datetime.timedelta(seconds=60))
start_time_z = start_time.strftime('%Y-%m-%d %H:%M:%S')
conn = boto.connect_ec2(tenant.access_key, tenant.secret_key)
jobCost = 0
timeStr = str(now).replace(" ", "T") + "Z"
startTimeStr = str(start_time_z).replace(" ", "T") + "Z"
prices = conn.get_spot_price_history(
instance_type=resource.type,
product_description="Linux/UNIX (Amazon VPC)",
end_time=timeStr,
start_time=startTimeStr)
lowest_price = 1000000
for price in prices:
for key, val in tenant.subnets.iteritems():
if (price.availability_zone == key and val == resource.subnet
and float(price.price) < lowest_price):
lowest_price = float(price.price)
return lowest_price
def get_spot_prices(instances, tenant):
"""
Get the current spot price for each instance type.
"""
new_time = ProvisionerConfig().simulate_time
now = new_time.strftime('%Y-%m-%d %H:%M:%S')
conn = boto.connect_ec2(tenant.access_key, tenant.secret_key)
timeStr = str(now).replace(" ", "T") + "Z"
for ins in instances:
prices = conn.get_spot_price_history(
instance_type=ins.type,
product_description="Linux/UNIX (Amazon VPC)",
end_time=timeStr, start_time=timeStr)
for price in prices:
for key, val in tenant.subnets.iteritems():
if price.availability_zone == key:
ins.spot.update({price.availability_zone: price.price})
def load_drafts_data(self):
"""
To speed this up, load in all the drafts data once per
provisioning cycle
"""
cur_time = datetime.datetime.utcnow()
if ProvisionerConfig().simulate:
cur_time = ProvisionerConfig().simulator.get_fake_time()
minus_ten = cur_time - datetime.timedelta(seconds=600)
query = ("select * from drafts_price where timestamp < "
"'%s'::TIMESTAMP and timestamp > '%s'::TIMESTAMP") % (
cur_time.strftime("%Y-%m-%d %H:%M"),
minus_ten.strftime("%Y-%m-%d %H:%M"))
self.drafts_data = []
logger.debug('getting drafts data: ' + query)
rows = ProvisionerConfig().dbconn.execute(query)
for row in rows:
data = {'time': row['time'], 'price': row['price'],
'zone': row['zone'], 'type': row['type']}
self.drafts_data.append(data)
