Find Librato EC2 CPUUtilization where box is below a threshold for a certain amount of time

librato_find_ec2_low_cpu.py

import librato

username = 'foo@example.com'
token = '1234abcd'

api = librato.connect(username, token)

metric_name = 'AWS.EC2.CPUUtilization'
source = '*' # Use source name or display name here to filter stuff

# cpu util
threshold = 1.0

print "Getting hourly measurements for last 4 hours with threshold less than " + str(threshold)
measurements = api.get(metric_name, source=source, count=4, resolution=3600).measurements

for source in measurements:
  averages = [m['value'] for m in measurements[source]]
  # If filtering results in the exact same array, then all measurements were below the threshold
  if filter(lambda x: x < threshold, averages) == averages:
    print source
    # print averages