def testMeasurementCreate(self):
# Test that a Measurement can be created.
measurement = model.Measurement(key_name='mymeasurement')
measurement.type = 'sometype'
measurement.put()
self.assertEqual(1, len(model.Measurement().all().fetch(2)))
result = model.Measurement().get_by_key_name('mymeasurement')
self.assertEqual(result.type, 'sometype')
self.assertEqual(result.GetTaskID(), None)
def testMeasurementCreateWithTask(self):
# Test that a Measurement can be created with a corresponding Task.
task = model.Task()
task.tag = 'faketag'
task.put()
task_id = task.key().id()
measurement = model.Measurement(key_name='mymeasurement')
measurement.type = 'sometype'
measurement.task = task
measurement.put()
self.assertEqual(1, len(model.Measurement().all().fetch(2)))
result = model.Measurement().get_by_key_name('mymeasurement')
self.assertEqual(result.type, 'sometype')
self.assertEqual(result.task.tag, 'faketag')
self.assertEqual(result.GetTaskID(), task_id)
def PostMeasurement(self, **unused_args):
"""Handler used to post a measurement from a device."""
if self.request.method.lower() != 'post':
raise error.BadRequest('Not a POST request.')
try:
measurement_list = json.loads(self.request.body)
logging.info('PostMeasurement: Got %d measurements to write',
len(measurement_list))
for measurement_dict in measurement_list:
device_info = model.DeviceInfo.get_or_insert(
measurement_dict['device_id'])
# Write new device properties, if present
if 'properties' in measurement_dict:
device_properties = model.DeviceProperties(
parent=device_info)
device_properties.device_info = device_info
properties_dict = measurement_dict['properties']
# TODO(wenjiezeng): Sanitize input that contains bad fields
util.ConvertFromDict(device_properties, properties_dict)
# Don't want the embedded properties in the Measurement object
del measurement_dict['properties']
else:
# Get most recent device properties
device_properties = device.GetLatestDeviceProperties(
device_info, create_new_if_none=True)
device_properties.put()
measurement = model.Measurement(parent=device_info)
util.ConvertFromDict(measurement, measurement_dict)
measurement.device_properties = device_properties
measurement.put()
except Exception, e:
logging.exception('Got exception posting measurements')
def testMeasurementExpando(self):
# Test that Measurement Expando functions work as expected.
measurement = model.Measurement()
measurement.mparam_foo = 'somevalue1'
measurement.mparam_bar = 'somevalue2'
measurement.mval_baz = 'somevalue3'
measurement.put()
self.assertEqual(measurement.GetParam('foo'), 'somevalue1')
self.assertEqual(measurement.GetParam('bar'), 'somevalue2')
self.assertEqual(measurement.GetValue('baz'), 'somevalue3')
params = measurement.Params()
self.assertEqual(params['foo'], 'somevalue1')
self.assertEqual(params['bar'], 'somevalue2')
self.assertEqual(len(params), 2)
params = measurement.Values()
self.assertEqual(params['baz'], 'somevalue3')
self.assertEqual(len(params), 1)
def PostMeasurement(self, **unused_args):
"""Handler used to post a measurement from a device."""
if self.request.method.lower() != 'post':
raise error.BadRequest('Not a POST request.')
try:
measurement_list = json.loads(self.request.body)
logging.info('PostMeasurement: Got %d measurements to write',
len(measurement_list))
for measurement_dict in measurement_list:
# Change device id such that it is anonymized, but preserve the TAC.
measurement_dict['tac'] = util.GetTypeAllocationCode(
measurement_dict['device_id'])
measurement_dict['device_id'] = util.HashDeviceId(
measurement_dict['device_id'])
device_info = model.DeviceInfo.get_or_insert(
measurement_dict['device_id'])
# Write new device properties, if present
if 'properties' in measurement_dict:
device_properties = model.DeviceProperties(
parent=device_info)
device_properties.device_info = device_info
properties_dict = measurement_dict['properties']
# TODO(wenjiezeng): Sanitize input that contains bad fields
util.ConvertFromDict(device_properties, properties_dict)
# Don't want the embedded properties in the Measurement object
del measurement_dict['properties']
else:
# Get most recent device properties
device_properties = device.GetLatestDeviceProperties(
device_info, create_new_if_none=True)
device_properties.put()
if 'context_results' in measurement_dict:
if 'values' in measurement_dict:
measurement_dict['values']['context_results'] = str(
measurement_dict['context_results'])
del measurement_dict['context_results']
measurement = model.Measurement(parent=device_info)
util.ConvertFromDict(measurement, measurement_dict)
measurement.device_properties = device_properties
measurement.put()
#extracting the IPs from the ping measurement results to the main CDN domain
if measurement.success == True and measurement.type == "ping":
if ('target' in measurement_dict['parameters']
) and measurement_dict['parameters'][
'target'] in CDN_TARGETS:
ipdata = model.CDNIpData()
target_ip = measurement_dict['values'][
'target_ip'].replace('"', '')
if ':' in target_ip:
continue
prefix = target_ip[:target_ip.rfind('.') + 1].replace(
'"', '')
q = model.CDNIpData.all()
q.filter("prefix =", prefix)
record = q.get()
if record != None:
#updating timestamp (expiration time)
record.put()
else:
#inserting the new IP record to the data store
record = model.CDNIpData()
record.ip = target_ip
record.prefix = prefix
record.cdn_domain = measurement_dict['parameters'][
'target']
record.put()
nettype = properties_dict['network_type'].lower().replace(
" ", "")
# map from deviceid to the list of high ping rtts
low_performance_devices = {}
if measurement.success == True and measurement.type == "ping" and nettype != "wifi":
if ('target' in measurement_dict['parameters']
) and measurement_dict['parameters'][
'target'] in CDN_TARGETS:
mean_rtt = float(
measurement_dict['values']['mean_rtt_ms'])
if util.IsLowPerformance("ping", nettype, mean_rtt):
lat = float(
properties_dict['location']['latitude'])
lon = float(
properties_dict['location']['longitude'])
carrier = properties_dict['carrier'].lower(
).replace(" ", "")
timestamp = measurement_dict['timestamp']
target = measurement_dict['parameters']['target']
# get all the measurement results from the last 24 hours
q = model.Measurement.all()
q.filter("type =", "ping")
q.filter("success =", True)
q.filter("timestamp >",
datetime.now() - timedelta(hours=24))
for record in q.run():
record_nettype = record.device_properties.network_type.lower(
).replace(" ", "")
if record.GetParam(
'target'
) == target and record_nettype != "wifi":
record_rtt = record.GetValue('mean_rtt_ms')
if util.IsLowPerformance(
"ping", record_nettype,
record_rtt):
record_location = record.device_properties.location
record_carrier = record.device_properties.carrier
distance = -1
if record_location.lat != 0.0 and record_location.lon != 0.0:
distance = util.Distance(
lat, lon, record_location.lat,
record_location.lon)
if (
distance != -1
and distance < 2000
) or record_carrier == carrier: #distance in km
if not (record.device_properties.
device_info.id in
low_performance_devices):
low_performance_devices[
record.device_properties.
device_info.id] = []
low_performance_devices[
record.device_properties.
device_info.id].append(
record_rtt)
#the number of devices should be at-least two
if len(low_performance_devices.keys()) >= 2:
query = model.Task.all()
query.filter(
"tag = ", "DIAG_TARGET"
) #specific ping tasks for target diagnosis, for example, ping to www.facebook.com
for diag_target_task in query.run():
filter = diag_target_task.filter
if not (str(device_info.id) in filter):
if filter == None:
diag_target_task.filter = "id = " + str(
device_info.id)
else:
diag_target_task.filter = diag_target_task.filter + " OR id = " + str(
device_info.id)
diag_target_task.put()
except Exception, e:
logging.exception('Got exception posting measurements')
