def start(self):
# Removes possible left over cached engine
# (needed if non-patched engine is run prior)
repository.engineFactory(reset=True)
# Override the Repository database name
try:
self._configPatch.start()
self._configPatchApplied = True
# Verity that the database doesn't exist yet
assert self.tempDatabaseName not in getAllDatabaseNames(), (
"Temp repo db=%s already existed" % (self.tempDatabaseName,))
# Now create the temporary repository database
self._attemptedToCreateRepository = True
repository.reset()
# Verify that the temporary repository database got created
assert self.tempDatabaseName in getAllDatabaseNames(), (
"Temp repo db=%s not found" % (self.tempDatabaseName,))
except:
# Attempt to clean up
self.stop()
raise
def start(self):
# Removes possible left over cached engine
# (needed if non-patched engine is run prior)
repository.engineFactory(reset=True)
# Override the Repository database name
try:
self._configPatch.start()
self._configPatchApplied = True
# Verity that the database doesn't exist yet
assert self.tempDatabaseName not in getAllDatabaseNames(), (
"Temp repo db=%s already existed" % (self.tempDatabaseName, ))
# Now create the temporary repository database
self._attemptedToCreateRepository = True
repository.reset()
# Verify that the temporary repository database got created
assert self.tempDatabaseName in getAllDatabaseNames(), (
"Temp repo db=%s not found" % (self.tempDatabaseName, ))
except:
# Attempt to clean up
self.stop()
raise
def testMetricDataForRandomRowID(uid):
'''
This tests if the metric data returned by the GET call :
_models/<uid>/data
has anomaly_score consistent with what is there in the actual
database by asserting it against a dao.MetricData.get() call
It repeats the process for 5 random sample rows for each uid
in the database.
Algorithm :
- Query the MetricDataHandler GET call for a certain uid
- Check if response is OK
- Find the last row id for the uid
- Select a random row between 1 and last row id
- Find the anomaly score for that row id
- Assert on the anomaly score
'''
response = self.app.get("/%s/data" %uid, headers=self.headers)
assertions.assertSuccess(self, response)
getAllModelsResult = utils.jsonDecode(response.body)
with repository.engineFactory().connect() as conn:
lastRowID = repository.getMetric(conn, uid).last_rowid
for _ in range(5):
randomRowID = randrange(1, lastRowID)
with repository.engineFactory().connect() as conn:
singleMetricData = repository.getMetricData(
conn,
uid,
rowid=randomRowID).first()
metricData = getMetricDataWithRowID(getAllModelsResult['data'],
randomRowID)
self.assertEqual(metricData[2], singleMetricData.anomaly_score)
self.assertEqual(datetime.strptime(metricData[0],
'%Y-%m-%d %H:%M:%S'), singleMetricData.timestamp)
def GET(self):
"""
Get model data stats
::
GET /_models/data/stats
Returns:
::
{
"processing_time_remaining": 37
}
"""
with repository.engineFactory().connect() as conn:
unprocessedDataCount = repository.getUnprocessedModelDataCount(
conn)
processingTimeRemaining = int(
math.ceil(unprocessedDataCount * _PROCESSING_TIME_PER_RECORD))
self.addStandardHeaders()
return utils.jsonEncode({
"processing_time_remaining":
processingTimeRemaining,
})
def GET(self, autostackId, *args): # pylint: disable=C0103,W0613
"""
Get Metrics associated with autostack
::
GET /_autostacks/{autostackId}/metrics
NOTE: args is ignored. Function signature for all method handlers must
be compatible with the regexp pattern that matches. POST optionally
takes a second argument, DELETE requires it.
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
metricRows = repository.getAutostackMetrics(engine,
autostackId,
getMetricDisplayFields(engine))
metricsList = [convertMetricRowToMetricDict(metricRow)
for metricRow in metricRows]
return utils.jsonEncode(metricsList)
except ObjectNotFoundError:
raise web.notfound("Autostack not found: Autostack ID: %s" % autostackId)
except web.HTTPError as ex:
if bool(re.match(r"([45][0-9][0-9])\s?", web.ctx.status)):
# Log 400-599 status codes as errors, ignoring 200-399
log.error(str(ex) or repr(ex))
raise
except Exception as ex:
raise web.internalerror(str(ex) or repr(ex))
def run(self):
with ModelSwapperInterface() as modelSwapper:
engine = repository.engineFactory()
while True:
with engine.connect() as conn:
pendingStacks = repository.retryOnTransientErrors(
repository.getAutostackMetricsPendingDataCollection)(
conn)
if not pendingStacks:
time.sleep(self._NOTHING_READY_SLEEP_TIME_SEC)
continue
# Build a sequence of autostack metric requests
requests = []
for autostack, metrics in pendingStacks:
refBase = len(requests)
requests.extend(
AutostackMetricRequest(refID=refBase + i,
autostack=autostack,
metric=metric)
for i, metric in enumerate(metrics))
# Collect, aggregate, and stream metric data
self._processAutostackMetricRequests(engine, requests,
modelSwapper)
def GET(self, autostackId, *args): # pylint: disable=C0103,W0613
"""
Get Metrics associated with autostack
::
GET /_autostacks/{autostackId}/metrics
NOTE: args is ignored. Function signature for all method handlers must
be compatible with the regexp pattern that matches. POST optionally
takes a second argument, DELETE requires it.
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
metricRows = repository.getAutostackMetrics(
engine, autostackId, getMetricDisplayFields(engine))
metricsList = [
convertMetricRowToMetricDict(metricRow)
for metricRow in metricRows
]
return utils.jsonEncode(metricsList)
except ObjectNotFoundError:
raise web.notfound("Autostack not found: Autostack ID: %s" %
autostackId)
except web.HTTPError as ex:
if bool(re.match(r"([45][0-9][0-9])\s?", web.ctx.status)):
# Log 400-599 status codes as errors, ignoring 200-399
log.error(str(ex) or repr(ex))
raise
except Exception as ex:
raise web.internalerror(str(ex) or repr(ex))
def testMetricDataQueryParams(uid):
'''
This test makes MetricDataHandler GET calls with various params :
_models/<uid>/data?from=<>&to=<>&anomaly=<>
'''
with repository.engineFactory().connect() as conn:
firstMetricData = conn.execute(
"SELECT * FROM `metric_data` WHERE `uid`='%s' "
"and abs(`anomaly_score` - 0) > 1e-5 "
"ORDER BY `timestamp` ASC LIMIT 1" % uid).fetchall()
lastMetricData = conn.execute(
"SELECT * FROM `metric_data` WHERE `uid`='%s' "
"and abs(`anomaly_score` - 0) > 1e-5 "
"ORDER BY `timestamp` DESC LIMIT 1" % uid).fetchall()
firstTimeStamp = firstMetricData[0].timestamp
lastTimeStamp = lastMetricData[0].timestamp
anomalyScore = firstMetricData[0].anomaly_score
response = self.app.get("/%s/data?from=%s&to=%s&anomaly=%s"
% (uid, firstTimeStamp, lastTimeStamp, anomalyScore),
headers=self.headers)
assertions.assertSuccess(self, response)
getAllModelsResult = utils.jsonDecode(response.body)
for metricData in getAllModelsResult['data']:
self.assertGreaterEqual(metricData[2], anomalyScore)
self.assertGreaterEqual(datetime.strptime(metricData[0],
'%Y-%m-%d %H:%M:%S'), firstTimeStamp)
self.assertLessEqual(datetime.strptime(metricData[0],
'%Y-%m-%d %H:%M:%S'), lastTimeStamp)
def testMetricDataTimeStampQueryParams(uid):
'''
This test makes MetricDataHandler GET calls with from and to params :
_models/<uid>/data?from=<>&to=<>
'''
with repository.engineFactory().connect() as conn:
firstMetricData = conn.execute(
sql.select([schema.metric_data])
.where(schema.metric_data.c.uid == uid)
.order_by(sql.expression.asc(schema.metric_data.c.timestamp))
.limit(1)).fetchall()
lastMetricData = conn.execute(
sql.select([schema.metric_data])
.where(schema.metric_data.c.uid == uid)
.order_by(sql.expression.desc(schema.metric_data.c.timestamp))
.limit(1)).fetchall()
firstTimeStamp = firstMetricData[0].timestamp
lastTimeStamp = lastMetricData[0].timestamp
response = self.app.get("/%s/data?from=%s&to=%s"
% (uid, firstTimeStamp, lastTimeStamp), headers=self.headers)
assertions.assertSuccess(self, response)
getAllModelsResult = utils.jsonDecode(response.body)
for metricData in getAllModelsResult['data']:
self.assertGreaterEqual(datetime.strptime(metricData[0],
'%Y-%m-%d %H:%M:%S'), firstTimeStamp)
self.assertLessEqual(datetime.strptime(metricData[0],
'%Y-%m-%d %H:%M:%S'), lastTimeStamp)
def GET(self):
"""
Get model data stats
::
GET /_models/data/stats
Returns:
::
{
"processing_time_remaining": 37
}
"""
with repository.engineFactory().connect() as conn:
unprocessedDataCount = repository.getUnprocessedModelDataCount(conn)
processingTimeRemaining = int(math.ceil(
unprocessedDataCount * _PROCESSING_TIME_PER_RECORD))
self.addStandardHeaders()
return utils.jsonEncode({
"processing_time_remaining": processingTimeRemaining,
})
def checkModelIsActive(self, uid):
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(conn,
uid,
fields=[schema.metric.c.status])
self.assertEqual(metricObj.status, MetricStatus.ACTIVE)
def checkModelIsActive(self, uid):
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(conn,
uid,
fields=[schema.metric.c.status])
self.assertEqual(metricObj.status, MetricStatus.ACTIVE)
def checkMetricUnmonitoredById(self, uid):
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(conn, uid, fields=[schema.metric.c.status, schema.metric.c.parameters])
self.assertEqual(metricObj.status, MetricStatus.UNMONITORED)
self.assertIsNone(metricObj.parameters)
with self.assertRaises(model_checkpoint_mgr.ModelNotFound):
model_checkpoint_mgr.ModelCheckpointMgr().loadModelDefinition(uid)
def tearDownClass(cls):
try:
engine = repository.engineFactory()
with engine.connect() as conn:
repository.deleteMetric(conn, cls.uid)
with engine.connect() as conn:
_ = repository.getMetric(conn, cls.uid)
except ObjectNotFoundError:
g_logger.info("Successful clean-up")
else:
g_logger.error("Test failed to delete metric=%s", cls.uid)
def checkStats(self, metricName, mn, mx):
"""Check that stats are computed correctly from the database"""
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getCustomMetricByName(
conn, metricName, fields=[schema.metric.c.uid, schema.metric.c.parameters]
)
stats = repository.getMetricStats(conn, metricObj.uid)
self.assertSetEqual(set(stats.keys()), set(("min", "max")))
self.assertAlmostEqual(stats["min"], mn)
self.assertAlmostEqual(stats["max"], mx)
def checkMetricUnmonitoredById(self, uid):
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(
conn,
uid,
fields=[schema.metric.c.status, schema.metric.c.parameters])
self.assertEqual(metricObj.status, MetricStatus.UNMONITORED)
self.assertIsNone(metricObj.parameters)
with self.assertRaises(model_checkpoint_mgr.ModelNotFound):
model_checkpoint_mgr.ModelCheckpointMgr().loadModelDefinition(uid)
def checkStats(self, metricName, mn, mx):
"""Check that stats are computed correctly from the database"""
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = (repository.getCustomMetricByName(
conn,
metricName,
fields=[schema.metric.c.uid, schema.metric.c.parameters]))
stats = repository.getMetricStats(conn, metricObj.uid)
self.assertSetEqual(set(stats.keys()), set(("min", "max")))
self.assertAlmostEqual(stats["min"], mn)
self.assertAlmostEqual(stats["max"], mx)
def checkEncoderResolution(self, uid, minVal, maxVal):
"""Check that encoder resolution is computed correctly."""
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(conn, uid, fields=[schema.metric.c.name, schema.metric.c.model_params])
modelParams = json.loads(metricObj.model_params)
self.assertNotEqual(modelParams, None, "No model exists for metric %s" % metricObj.name)
sensorParams = modelParams["modelConfig"]["modelParams"]["sensorParams"]
encoderParams = sensorParams["encoders"]["c1"]
# Estimate and check the bounds for the resolution based on min and max
lower = (maxVal - minVal) / 300.0
upper = (maxVal - minVal) / 80.0
self.assertGreater(encoderParams["resolution"], lower)
self.assertLess(encoderParams["resolution"], upper)
def testMetricDataAnomalyAsQueryParams(uid):
'''
This test makes MetricDataHandler GET calls with anomaly param :
_models/<uid>/data?anomaly=<>
'''
queryString = ("SELECT * FROM metric_data WHERE uid='%s' "
" and abs(anomaly_score - 0) > 1e-5 LIMIT 1") % uid
with repository.engineFactory().connect() as conn:
sampleMetricData = conn.execute(queryString).first()
anomalyScore = sampleMetricData.anomaly_score
response = self.app.get("/%s/data?anomaly=%s"
% (uid, anomalyScore), headers=self.headers)
assertions.assertSuccess(self, response)
getAllModelsResult = utils.jsonDecode(response.body)
for metricData in getAllModelsResult['data']:
self.assertGreaterEqual(metricData[2], anomalyScore)
def testTablesCreatedWithInnoDBEngine(self):
"""
Tests to make sure that all of the tables in the htm-it table_schema were
created using the InnoDB engine to preserve referential integrity.
At this time, it is checking all tables in the DB; in the future, if we do
not require referential integrity, we can explicitly whitelist specific
tables to allow those to use `MyISAM` or another engine.
"""
engine = repository.engineFactory()
result = engine.execute("SELECT table_name, engine "
"FROM information_schema.tables "
"WHERE table_schema = 'htm-it'")
for row in result:
self.assertEqual(row.engine, "InnoDB",
("Table %s was created with the wrong engine type" % row["table_name"]))
def _runBasicChecksOnModel(self, modelId, _adapter, modelSpec):
with repository.engineFactory().connect() as conn:
metricObj = repository.getMetric(conn, modelId)
_LOG.info(
"Making sure metric is CREATE_PENDING or ACTIVE or PENDING_DATA")
self.assertIn(metricObj.status, [
MetricStatus.CREATE_PENDING, MetricStatus.ACTIVE,
MetricStatus.PENDING_DATA
])
_LOG.info("Checking modelSpec")
self.assertEqual(jsonDecode(metricObj.parameters), modelSpec)
_LOG.info("Waiting for model to become active")
self.checkModelIsActive(modelId)
_LOG.info("Waiting at least one model result")
self.checkModelResultsSize(modelId, 1, atLeast=True)
def _runBasicChecksOnModel(self, modelId, _adapter, modelSpec):
with repository.engineFactory().connect() as conn:
metricObj = repository.getMetric(conn, modelId)
_LOG.info("Making sure metric is CREATE_PENDING or ACTIVE or PENDING_DATA")
self.assertIn(
metricObj.status,
[MetricStatus.CREATE_PENDING,
MetricStatus.ACTIVE,
MetricStatus.PENDING_DATA])
_LOG.info("Checking modelSpec")
self.assertEqual(jsonDecode(metricObj.parameters), modelSpec)
_LOG.info("Waiting for model to become active")
self.checkModelIsActive(modelId)
_LOG.info("Waiting at least one model result")
self.checkModelResultsSize(modelId, 1, atLeast=True)
def testTablesCreatedWithInnoDBEngine(self):
"""
Tests to make sure that all of the tables in the htm-it table_schema were
created using the InnoDB engine to preserve referential integrity.
At this time, it is checking all tables in the DB; in the future, if we do
not require referential integrity, we can explicitly whitelist specific
tables to allow those to use `MyISAM` or another engine.
"""
engine = repository.engineFactory()
result = engine.execute("SELECT table_name, engine "
"FROM information_schema.tables "
"WHERE table_schema = 'htm-it'")
for row in result:
self.assertEqual(
row.engine, "InnoDB",
("Table %s was created with the wrong engine type" %
row["table_name"]))
def setUpClass(cls):
with open(os.path.join(
htm.it.app.HTM_IT_HOME,
"tests/py/integration/app/test_resources.yaml")) as fin:
resources = yaml.load(fin)
testCase = resources[aws_base.ResourceTypeNames.EC2_INSTANCE][0]
cls._testRegion = testCase["region"]
cls._testId = testCase["dimensions"]["InstanceId"]
# Load htm-it API Key as required by TestCaseBase
cls.apiKey = htm.it.app.config.get("security", "apikey")
cls._modelSpecNoMinMax = {"datasource":testCase["datasource"],
"metricSpec":{
"region":testCase["region"],
"namespace":testCase["namespace"],
"metric":testCase["metric"],
"dimensions":testCase["dimensions"]}}
cls.engine = repository.engineFactory()
def checkEncoderResolution(self, uid, minVal, maxVal):
"""Check that encoder resolution is computed correctly."""
engine = repository.engineFactory()
with engine.begin() as conn:
metricObj = repository.getMetric(
conn,
uid,
fields=[schema.metric.c.name, schema.metric.c.model_params])
modelParams = json.loads(metricObj.model_params)
self.assertNotEqual(modelParams, None,
"No model exists for metric %s" % metricObj.name)
sensorParams = modelParams["modelConfig"]["modelParams"][
"sensorParams"]
encoderParams = sensorParams["encoders"]["c1"]
# Estimate and check the bounds for the resolution based on min and max
lower = (maxVal - minVal) / 300.0
upper = (maxVal - minVal) / 80.0
self.assertGreater(encoderParams["resolution"], lower)
self.assertLess(encoderParams["resolution"], upper)
def fixUpHTMItDB():
g_log.info("******* UPDATING HTM-ITDB *******")
# Perform manual db migration to switch to sqlalchemy
engine = repository.engineFactory()
with engine.connect() as connection:
connection.execute("DROP TABLE IF EXISTS DATABASECHANGELOG")
connection.execute("DROP TABLE IF EXISTS DATABASECHANGELOGLOCK")
connection.execute(
"CREATE TABLE `alembic_version` (`version_num` varchar(32) NOT NULL) "
"ENGINE=InnoDB DEFAULT CHARSET=utf8;")
# This fools Alembic into thinking the first migration, which goes from an
# empty database to the 1.6 setup, has already been completed so it doesn't
# attempt to perform it.
connection.execute(
"INSERT INTO alembic_version (version_num) VALUES('3a7e06671df4');")
# Now we can run the migration script to upgrade from 1.6 to 1.7.
repository.migrate("2f1ee984f978")
g_log.info("******* HTM-ITDB UPDATED *******")
def fixUpHTMItDB():
g_log.info("******* UPDATING HTM-ITDB *******")
# Perform manual db migration to switch to sqlalchemy
engine = repository.engineFactory()
with engine.connect() as connection:
connection.execute("DROP TABLE IF EXISTS DATABASECHANGELOG")
connection.execute("DROP TABLE IF EXISTS DATABASECHANGELOGLOCK")
connection.execute(
"CREATE TABLE `alembic_version` (`version_num` varchar(32) NOT NULL) "
"ENGINE=InnoDB DEFAULT CHARSET=utf8;")
# This fools Alembic into thinking the first migration, which goes from an
# empty database to the 1.6 setup, has already been completed so it doesn't
# attempt to perform it.
connection.execute(
"INSERT INTO alembic_version (version_num) VALUES('3a7e06671df4');"
)
# Now we can run the migration script to upgrade from 1.6 to 1.7.
repository.migrate("2f1ee984f978")
g_log.info("******* HTM-ITDB UPDATED *******")
def formatMetricRowProxy(metricObj):
if metricObj.tag_name is not None and len(metricObj.tag_name) > 0:
displayName = "%s (%s)" % (metricObj.tag_name, metricObj.server)
else:
displayName = metricObj.server
if (hasattr(metricObj, "parameters")
and isinstance(metricObj.parameters, basestring)):
parameters = json.loads(metricObj.parameters)
else:
parameters = metricObj.parameters
engine = repository.engineFactory()
allowedKeys = set([col.name for col in getMetricDisplayFields(engine)])
metricDict = dict((col, getattr(metricObj, col))
for col in metricObj.keys() if col in allowedKeys)
metricDict["display_name"] = displayName
metricDict["parameters"] = parameters
return metricDict
def formatMetricRowProxy(metricObj):
if metricObj.tag_name is not None and len(metricObj.tag_name) > 0:
displayName = "%s (%s)" % (metricObj.tag_name, metricObj.server)
else:
displayName = metricObj.server
if (hasattr(metricObj, "parameters") and
isinstance(metricObj.parameters, basestring)):
parameters = json.loads(metricObj.parameters)
else:
parameters = metricObj.parameters
engine = repository.engineFactory()
allowedKeys = set([col.name for col in getMetricDisplayFields(engine)])
metricDict = dict((col, getattr(metricObj, col))
for col in metricObj.keys()
if col in allowedKeys)
metricDict["display_name"] = displayName
metricDict["parameters"] = parameters
return metricDict
def run(self):
with ModelSwapperInterface() as modelSwapper:
engine = repository.engineFactory()
while True:
with engine.connect() as conn:
pendingStacks = repository.retryOnTransientErrors(
repository.getAutostackMetricsPendingDataCollection)(conn)
if not pendingStacks:
time.sleep(self._NOTHING_READY_SLEEP_TIME_SEC)
continue
# Build a sequence of autostack metric requests
requests = []
for autostack, metrics in pendingStacks:
refBase = len(requests)
requests.extend(
AutostackMetricRequest(refID=refBase + i,
autostack=autostack,
metric=metric)
for i, metric in enumerate(metrics))
# Collect, aggregate, and stream metric data
self._processAutostackMetricRequests(engine, requests, modelSwapper)
def setUpClass(cls):
with open(
os.path.join(
htm.it.app.HTM_IT_HOME,
"tests/py/integration/app/test_resources.yaml")) as fin:
resources = yaml.load(fin)
testCase = resources[aws_base.ResourceTypeNames.EC2_INSTANCE][0]
cls._testRegion = testCase["region"]
cls._testId = testCase["dimensions"]["InstanceId"]
# Load htm-it API Key as required by TestCaseBase
cls.apiKey = htm.it.app.config.get("security", "apikey")
cls._modelSpecNoMinMax = {
"datasource": testCase["datasource"],
"metricSpec": {
"region": testCase["region"],
"namespace": testCase["namespace"],
"metric": testCase["metric"],
"dimensions": testCase["dimensions"]
}
}
cls.engine = repository.engineFactory()
def getStatistics(metric):
"""Get aggregate statistics for an Autostack metric.
The metric must belong to an Autostack or a ValueError will be raised. If AWS
returns no stats and there is no data in the database then an
ObjectNotFoundError will be raised.
:param metric: the Autostack metric to get statistics for
:type metric: TODO
:returns: metric statistics
:rtype: dict {"min": minVal, "max": maxVal}
:raises: ValueError if the metric doesn't not belong to an Autostack
:raises: htm.it.app.exceptions.ObjectNotFoundError if the metric or the
corresponding autostack doesn't exist; this may happen if it got deleted
by another process in the meantime.
:raises: htm.it.app.exceptions.MetricStatisticsNotReadyError if there are no or
insufficent samples at this time; this may also happen if the metric and
its data were deleted by another process in the meantime
"""
engine = repository.engineFactory()
if metric.datasource != "autostack":
raise ValueError(
"Metric must belong to an Autostack but has datasource=%r" %
metric.datasource)
metricGetter = EC2InstanceMetricGetter()
try:
with engine.connect() as conn:
autostack = repository.getAutostackFromMetric(conn, metric.uid)
instanceMetricList = metricGetter.collectMetricStatistics(
autostack, metric)
finally:
metricGetter.close()
n = 0
mins = 0.0
maxs = 0.0
for instanceMetric in instanceMetricList:
assert len(instanceMetric.records) == 1
metricRecord = instanceMetric.records[0]
stats = metricRecord.value
if (not isinstance(stats["min"], numbers.Number)
or math.isnan(stats["min"])
or not isinstance(stats["max"], numbers.Number)
or math.isnan(stats["max"])):
# Cloudwatch gave us bogus data for this metric so we will exclude it
continue
mins += stats["min"]
maxs += stats["max"]
n += 1
if n == 0:
# Fall back to metric_data when we don't get anything from AWS. This may
# raise an MetricStatisticsNotReadyError if there is no or not enough data.
with engine.connect() as conn:
dbStats = repository.getMetricStats(conn, metric.uid)
minVal = dbStats["min"]
maxVal = dbStats["max"]
else:
minVal = mins / n
maxVal = maxs / n
# Now add the 20% buffer on the range
buff = (maxVal - minVal) * 0.2
minVal -= buff
maxVal += buff
return {"min": minVal, "max": maxVal}
def getStatistics(metric):
"""Get aggregate statistics for an Autostack metric.
The metric must belong to an Autostack or a ValueError will be raised. If AWS
returns no stats and there is no data in the database then an
ObjectNotFoundError will be raised.
:param metric: the Autostack metric to get statistics for
:type metric: TODO
:returns: metric statistics
:rtype: dict {"min": minVal, "max": maxVal}
:raises: ValueError if the metric doesn't not belong to an Autostack
:raises: htm.it.app.exceptions.ObjectNotFoundError if the metric or the
corresponding autostack doesn't exist; this may happen if it got deleted
by another process in the meantime.
:raises: htm.it.app.exceptions.MetricStatisticsNotReadyError if there are no or
insufficent samples at this time; this may also happen if the metric and
its data were deleted by another process in the meantime
"""
engine = repository.engineFactory()
if metric.datasource != "autostack":
raise ValueError(
"Metric must belong to an Autostack but has datasource=%r"
% metric.datasource)
metricGetter = EC2InstanceMetricGetter()
try:
with engine.connect() as conn:
autostack = repository.getAutostackFromMetric(conn, metric.uid)
instanceMetricList = metricGetter.collectMetricStatistics(autostack, metric)
finally:
metricGetter.close()
n = 0
mins = 0.0
maxs = 0.0
for instanceMetric in instanceMetricList:
assert len(instanceMetric.records) == 1
metricRecord = instanceMetric.records[0]
stats = metricRecord.value
if (not isinstance(stats["min"], numbers.Number) or
math.isnan(stats["min"]) or
not isinstance(stats["max"], numbers.Number) or
math.isnan(stats["max"])):
# Cloudwatch gave us bogus data for this metric so we will exclude it
continue
mins += stats["min"]
maxs += stats["max"]
n += 1
if n == 0:
# Fall back to metric_data when we don't get anything from AWS. This may
# raise an MetricStatisticsNotReadyError if there is no or not enough data.
with engine.connect() as conn:
dbStats = repository.getMetricStats(conn, metric.uid)
minVal = dbStats["min"]
maxVal = dbStats["max"]
else:
minVal = mins / n
maxVal = maxs / n
# Now add the 20% buffer on the range
buff = (maxVal - minVal) * 0.2
minVal -= buff
maxVal += buff
return {"min": minVal,
"max": maxVal}
def GET(self):
"""
Get metrics, sorted by AWS name tag / instance ID
:returns: List of metrics
:rtype: list
Example request::
GET /_anomalies/name
Example response::
[
{
"status": 1,
"last_rowid": 4033,
"display_name": "jenkins-master (us-west-2/AWS/EC2/i-12345678)",
"description": "NetworkIn on EC2 instance i-12345678 in us-west-2",
"name": "AWS/EC2/NetworkIn",
"last_timestamp": "2014-04-14 20:29:00",
"poll_interval": 300,
"server": "us-west-2/AWS/EC2/i-12345678",
"tag_name": "jenkins-master",
"datasource": "cloudwatch",
"location": "us-west-2",
"message": null,
"parameters": {
"InstanceId": "i-12345678",
"region": "us-west-2"
},
"uid": "0b6b97022fdb4134936aae92aa67393b"
},
...
]
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
with engine.connect() as conn:
modelIterator = repository.getAllMetrics(conn, fields=getMetricDisplayFields(conn))
modelsList = [convertMetricRowToMetricDict(model) for model in modelIterator]
# Sort by tag_name, and then parameters=>InstanceID
def cmpFn(model1, model2):
name1 = model1["tag_name"]
name2 = model2["tag_name"]
id1 = model1["parameters"].get("InstanceID")
id2 = model2["parameters"].get("InstanceID")
if name1 and not name2:
return -1
elif name2 and not name1:
return 1
elif name1 != name2:
return cmp(name1, name2)
elif id1 and not id2:
return -1
elif id2 and not id1:
return 1
elif id1 != id2:
return cmp(id1, id2)
return 0
modelsList.sort(cmpFn)
return utils.jsonEncode(modelsList)
except (web.HTTPError) as ex:
log.info(str(ex) or repr(ex))
raise ex
except Exception as ex:
log.exception("GET Failed")
raise web.internalerror(str(ex) or repr(ex))
def POST(cls):
"""Upload the metric info and metric data as a compressed tarfile to S3.
The request must include the uid of the metric and may include other JSON
keys as well. For instance, it is likely that a request from the mobile
application will include information about the current view and data
being displayed when the feedback request is sent. Any fields in addition
to uid will be stored with the feedback archive file that is uploaded to
S3.
"""
inputData = json.loads(web.data())
# Get the metric uid
uid = inputData["uid"]
del inputData["uid"]
inputData["server_id"] = _MACHINE_ID
# Data is written to a temporary directory before uploading
path = tempfile.mkdtemp()
try:
# Retrieve the metric table record and add it to the other input
# parameters
metricFields = [schema.metric.c.uid,
schema.metric.c.datasource,
schema.metric.c.name,
schema.metric.c.description,
schema.metric.c.server,
schema.metric.c.location,
schema.metric.c.parameters,
schema.metric.c.status,
schema.metric.c.message,
schema.metric.c.last_timestamp,
schema.metric.c.poll_interval,
schema.metric.c.tag_name,
schema.metric.c.last_rowid]
with repository.engineFactory().connect() as conn:
metricRow = repository.getMetric(conn,
uid,
metricFields)
metric = dict([(col.name, utils.jsonDecode(getattr(metricRow, col.name))
if col.name == "parameters"
else getattr(metricRow, col.name))
for col in metricFields])
if metric["tag_name"]:
metric["display_name"] = "%s (%s)" % (metric["tag_name"],
metric["server"])
else:
metric["display_name"] = metric["server"]
inputData["metric"] = utils.jsonEncode(metric)
metricPath = os.path.join(path, "metric.json")
with open(metricPath, "w") as f:
json.dump(inputData, f)
# Retrieve the metric data
with repository.engineFactory().connect() as conn:
metricDataRows = repository.getMetricData(conn, uid)
metricData = [dict([(col.name, getattr(metricData, col.name))
for col in schema.metric_data.columns])
for metricData in metricDataRows]
metricDataPath = os.path.join(path, "metric_data.csv")
with open(metricDataPath, "w") as f:
writer = csv.writer(f)
if len(metricData) > 0:
header = metricData[0].keys()
# Write the field names first
writer.writerow(header)
# Then write out the data for each row
for dataDict in metricData:
row = [dataDict[h] for h in header]
writer.writerow(row)
# Create a tarfile to upload
ts = datetime.datetime.utcnow().strftime("%Y%m%d-%H%M%S")
filename = "metric_dump_%s_%s.tar.gz" % (uid, ts)
tfPath = os.path.join(path, filename)
with tarfile.open(tfPath, "w:gz") as tf:
tf.add(metricPath, arcname=os.path.basename(metricPath))
tf.add(metricDataPath, arcname=os.path.basename(metricDataPath))
# Upload the tarfile
return cls._uploadTarfile(filename, tfPath)
finally:
shutil.rmtree(path)
def setUpClass(cls):
# Load htm-it API Key as required by TestCaseBase
cls.apiKey = htm.it.app.config.get("security", "apikey")
cls.engine = repository.engineFactory()
def POST(cls):
"""Upload the metric info and metric data as a compressed tarfile to S3.
The request must include the uid of the metric and may include other JSON
keys as well. For instance, it is likely that a request from the mobile
application will include information about the current view and data
being displayed when the feedback request is sent. Any fields in addition
to uid will be stored with the feedback archive file that is uploaded to
S3.
"""
inputData = json.loads(web.data())
# Get the metric uid
uid = inputData["uid"]
del inputData["uid"]
inputData["server_id"] = _MACHINE_ID
# Data is written to a temporary directory before uploading
path = tempfile.mkdtemp()
try:
# Retrieve the metric table record and add it to the other input
# parameters
metricFields = [
schema.metric.c.uid, schema.metric.c.datasource,
schema.metric.c.name, schema.metric.c.description,
schema.metric.c.server, schema.metric.c.location,
schema.metric.c.parameters, schema.metric.c.status,
schema.metric.c.message, schema.metric.c.last_timestamp,
schema.metric.c.poll_interval, schema.metric.c.tag_name,
schema.metric.c.last_rowid
]
with repository.engineFactory().connect() as conn:
metricRow = repository.getMetric(conn, uid, metricFields)
metric = dict([
(col.name, utils.jsonDecode(getattr(metricRow, col.name))
if col.name == "parameters" else getattr(metricRow, col.name))
for col in metricFields
])
if metric["tag_name"]:
metric["display_name"] = "%s (%s)" % (metric["tag_name"],
metric["server"])
else:
metric["display_name"] = metric["server"]
inputData["metric"] = utils.jsonEncode(metric)
metricPath = os.path.join(path, "metric.json")
with open(metricPath, "w") as f:
json.dump(inputData, f)
# Retrieve the metric data
with repository.engineFactory().connect() as conn:
metricDataRows = repository.getMetricData(conn, uid)
metricData = [
dict([(col.name, getattr(metricData, col.name))
for col in schema.metric_data.columns])
for metricData in metricDataRows
]
metricDataPath = os.path.join(path, "metric_data.csv")
with open(metricDataPath, "w") as f:
writer = csv.writer(f)
if len(metricData) > 0:
header = metricData[0].keys()
# Write the field names first
writer.writerow(header)
# Then write out the data for each row
for dataDict in metricData:
row = [dataDict[h] for h in header]
writer.writerow(row)
# Create a tarfile to upload
ts = datetime.datetime.utcnow().strftime("%Y%m%d-%H%M%S")
filename = "metric_dump_%s_%s.tar.gz" % (uid, ts)
tfPath = os.path.join(path, filename)
with tarfile.open(tfPath, "w:gz") as tf:
tf.add(metricPath, arcname=os.path.basename(metricPath))
tf.add(metricDataPath,
arcname=os.path.basename(metricDataPath))
# Upload the tarfile
return cls._uploadTarfile(filename, tfPath)
finally:
shutil.rmtree(path)
def GET(self, period):
"""
Get metrics, sorted by anomalies over specified period (hours)
:param period: Period (hours) over which to consider anomalies for sort
order
:type period: int
:returns: List of metrics
:rtype: list
Example request::
GET /_anomalies/period/{period}
Example response::
[
{
"status": 1,
"last_rowid": 4033,
"display_name": "jenkins-master (us-west-2/AWS/EC2/i-12345678)",
"description": "NetworkIn on EC2 instance i-12345678 in us-west-2",
"name": "AWS/EC2/NetworkIn",
"last_timestamp": "2014-04-14 20:29:00",
"poll_interval": 300,
"server": "us-west-2/AWS/EC2/i-12345678",
"tag_name": "jenkins-master",
"datasource": "cloudwatch",
"location": "us-west-2",
"message": null,
"parameters": {
"InstanceId": "i-12345678",
"region": "us-west-2"
},
"uid": "0b6b97022fdb4134936aae92aa67393b"
},
...
]
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
with engine.connect() as conn:
modelIterator = repository.getAllMetrics(conn, fields=getMetricDisplayFields(conn))
displayValuesMap = repository.getMetricIdsSortedByDisplayValue(conn, period)
# Keep track of the largest model display value for each server
serverValues = defaultdict(float)
modelsList = []
for model in modelIterator:
val = displayValuesMap.get(model.uid)
if val is not None:
serverValues[model.server] = max(float(val),
serverValues[model.server])
modelsList.append(convertMetricRowToMetricDict(model))
# Sort by the primary key. The order within each server is preserved
# from previous sort.
def getModelRankByServer(model):
return (-serverValues[model["server"]], model["server"], model["name"])
modelsList = sorted(modelsList, key=getModelRankByServer)
return utils.jsonEncode(modelsList)
except (web.HTTPError) as ex:
log.info(str(ex) or repr(ex))
raise ex
except Exception as ex:
log.exception("GET Failed")
raise web.internalerror(str(ex) or repr(ex))
def testCollectAndPublishMetrics(self):
# Start Metric Collector, create a set of Metrics, wait for it to collect
# some metrics and to publish them to the metric_exchange, then validate
# attributes of the published metrics.
#
# TODO Add more metric types
# TODO Deeper validation of the published metrics
# Start our own instance of metric collector and wait for data points
with self._startModelSchedulerSubprocess() as modelSchedulerSubprocess, \
self._startMetricCollectorSubprocess() as metricCollectorSubprocess:
# Create some models for metric collector to harvest
region = "us-west-2"
namespace = "AWS/EC2"
resourceType = ResourceTypeNames.EC2_INSTANCE
engine = repository.engineFactory()
adapter = createCloudwatchDatasourceAdapter()
ec2Instances = adapter.describeResources(region=region,
resourceType=resourceType)
self.assertGreater(len(ec2Instances), 0)
maxModels = 10
ec2Instances = ec2Instances[:min(maxModels, Quota.getInstanceQuota())]
metricInstances = []
_LOGGER.info("Starting %d models", len(ec2Instances))
self.assertGreater(len(ec2Instances), 0)
for ec2Instance in ec2Instances:
metricSpec = {"region": region,
"namespace": namespace,
"metric": "CPUUtilization",
"dimensions": {"InstanceId": ec2Instance["resID"]}}
modelSpec = {"datasource": "cloudwatch",
"metricSpec": metricSpec}
metricId = adapter.monitorMetric(modelSpec)
with engine.connect() as conn:
repository.setMetricStatus(conn, metricId, MetricStatus.ACTIVE)
metricInstances.append(metricId)
_LOGGER.info("Waiting for results from models...")
seenMetricIDs = set()
allMetricIDs = set(metricInstances)
# Register a timeout so we won't deadlock the test
def onTimeout(resultsQueueName):
_LOGGER.error(
"Timed out waiting to get results from models; numResults=%d; "
"expected=%d", len(seenMetricIDs), len(allMetricIDs))
# HACK delete model swapper results queue to abort the consumer
try:
with MessageBusConnector() as bus:
bus.deleteMessageQueue(resultsQueueName)
except Exception:
_LOGGER.exception("Failed to delete results mq=%s", resultsQueueName)
raise
with ModelSwapperInterface() as modelSwapper:
with modelSwapper.consumeResults() as consumer:
timer = threading.Timer(120, onTimeout,
args=[modelSwapper._resultsQueueName])
timer.start()
try:
for batch in consumer:
seenMetricIDs.add(batch.modelID)
batch.ack()
if seenMetricIDs == allMetricIDs:
break
else:
self.fail(
"Expected %d results, but got only %d: %s"
% (len(allMetricIDs), len(seenMetricIDs), seenMetricIDs,))
_LOGGER.info("Got %d results from models", len(seenMetricIDs))
finally:
timer.cancel()
# Terminate metric_collector subprocess gracefully to avoid too much
# error logging junk on the terminal
metricCollectorSubprocess.send_signal(signal.SIGINT)
# Terminate metric_collector subprocess gracefully to avoid too much
# error logging junk on the terminal
modelSchedulerSubprocess.send_signal(signal.SIGINT)
def _connect(): """ Explicitly checks out a connection from the sqlalchemy engine for use inside web handler via web.ctx """ web.ctx.connFactory = repository.engineFactory().connect
def _connect():
""" Explicitly checks out a connection from the sqlalchemy engine for use
inside web handler via web.ctx
"""
web.ctx.connFactory = repository.engineFactory().connect
def run(self):
""" Collect metric data and status for active metrics
"""
# NOTE: the process pool must be created BEFORE this main (parent) process
# creates any global or class-level shared resources (e.g., boto
# connection) that would have undersirable consequences when
# replicated into and used by forked child processes (e.g., the same MySQL
# connection socket file descriptor used by multiple processes). And we
# can't take advantage of the process Pool's maxtasksperchild feature
# either (for the same reason)
self._log.info("Starting htm-it Metric Collector")
resultsQueue = multiprocessing.Manager().JoinableQueue()
recvPipe, sendPipe = multiprocessing.Pipe(False)
processPool = multiprocessing.Pool(
processes=self._WORKER_PROCESS_POOL_SIZE,
maxtasksperchild=None)
try:
with ModelSwapperInterface() as modelSwapper:
engine = repository.engineFactory()
while True:
startTime = time.time()
if startTime > self._nextCacheGarbageCollectionTime:
# TODO: unit-test
self._garbageCollectInfoCache()
# Determine which metrics are due for an update
metricsToUpdate = self._getCandidateMetrics(engine)
filterDuration = time.time() - startTime
if not metricsToUpdate:
time.sleep(self._NO_PENDING_METRICS_SLEEP_SEC)
continue
# Collect metric data
collectionStartTime = time.time()
poolResults = self._collectDataForMetrics(metricsToUpdate,
processPool,
resultsQueue)
# Process/dispatch results in parallel in another thread as results
# become available in resultsQueue
dispatchThread = (
threading.Thread(target=self._processAndDispatchThreadTarget,
args=(engine,
metricsToUpdate,
resultsQueue,
modelSwapper,
sendPipe)))
dispatchStartTime = time.time()
dispatchThread.start()
# Syncronize with processPool
poolResults.wait() # Wait for collection tasks to complete
metricPollDuration = time.time() - collectionStartTime
resultsQueue.join() # Block until all tasks completed...
# Syncronize with dispatchThread
resultsQueue.put(self._SENTINEL) # Signal to dispatchThread that
# there are no more results to
# process.
resultsQueue.join()
numEmpty, numErrors = recvPipe.recv() # Get dispatchThread stats
dispatchDuration = time.time() - dispatchStartTime
self._log.info(
"Processed numMetrics=%d; numEmpty=%d; numErrors=%d; "
"duration=%.4fs (filter=%.4fs; query=%.4fs; dispatch=%.4fs)",
len(metricsToUpdate), numEmpty, numErrors,
time.time() - startTime, filterDuration,
metricPollDuration, dispatchDuration)
finally:
self._log.info("Exiting Metric Collector run-loop")
processPool.terminate()
processPool.join()
def testCollectMetricStatistics(self):
expectedStatisticNames = ["min", "max"]
def validateStats(stats):
self.assertIsInstance(stats, (list, tuple))
timestamps = []
for instanceMetrics in stats:
self.assertEqual(len(instanceMetrics.records), 1)
record = instanceMetrics.records[0]
self.assertIsInstance(record.value, dict)
self.assertGreater(len(record.value), 0)
self.assertTrue(
set(record.value.iterkeys()).issubset(expectedStatisticNames),
msg=record.value)
for metricValue in record.value.itervalues():
self.assertIsInstance(metricValue, float, msg=instanceMetrics)
self.assertFalse(math.isnan(metricValue))
timestamps.append(record.timestamp)
# Verify that all the stats timestamps are the same
if timestamps:
self.assertSequenceEqual(timestamps, [timestamps[0]] * len(timestamps))
# Collection data for both autostack/metric combinations
collector = EC2InstanceMetricGetter()
self.addCleanup(collector.close)
def _createAutostackMetric(conn, name, region, filters):
autostackDict = repository.addAutostack(conn,
name=name,
region=region,
filters=json.dumps(filters))
modelSpec = {"modelParams": {},
"datasource": "autostack",
"metricSpec": {"slaveDatasource": "cloudwatch",
"slaveMetric": {"metric": "CPUUtilization",
"namespace": "AWS/EC2"},
"autostackId": autostackDict["uid"]}}
metricDict = repository.addMetric(
conn,
datasource="autostack",
name="CPUUtilization",
description=("CPUUtilization on HTM-IT Autostack {0} in us-west-2 "
"region").format(name),
server="Autostacks/{0}".format(autostackDict["uid"]),
location=region,
tag_name=name,
parameters=htmengine.utils.jsonEncode(modelSpec),
poll_interval=300,
status=MetricStatus.UNMONITORED)
repository.addMetricToAutostack(conn,
autostackDict["uid"],
metricDict["uid"])
autostackObj = type("MutableAutostack", (object,), autostackDict)()
autostackObj.filters = json.loads(autostackObj.filters)
metricObj = type("MutableMetric", (object,), metricDict)()
return autostackObj, metricObj
# All instances in us-west-2
engine = repository.engineFactory()
with engine.begin() as conn:
autostack1, m1 = (
_createAutostackMetric(conn,
name="testCollectMetricStats1",
region="us-west-2",
filters={"tag:Name": ["*"]}))
stats1 = collector.collectMetricStatistics(
autostack=autostack1,
metric=m1)
print "STATS1:", stats1
validateStats(stats1)
self.assertGreaterEqual(len(stats1), 1)
# All instances in us-west-2
autostack2, m2 = _createAutostackMetric(conn,
name="testCollectMetricStats2",
region="us-west-2",
filters={"tag:Name": ["*"]})
stats2 = collector.collectMetricStatistics(
autostack=autostack2,
metric=m2)
print "STATS2:", stats2
validateStats(stats2)
self.assertGreater(len(stats2), 1)
# No matching instances in us-west-2
autostack3, m3 = (
_createAutostackMetric(
conn,
name="testCollectMetricStatistics3",
region="us-west-2",
filters={"tag:Name": ["NothingShouldMatchThis"]}))
stats3 = collector.collectMetricStatistics(
autostack=autostack3,
metric=m3)
print "STATS3:", stats3
validateStats(stats3)
self.assertEqual(len(stats3), 0)
def testCollectMetricData(self):
self.engine = repository.engineFactory(reset=True)
with self.engine.connect() as conn:
autostack1 = self._addAutostack(name="testCollectMetricData1",
region="us-west-2",
filters='{"tag:Name": ["*"]}')
m1a = self._addAutostackMetric(conn, autostack1)
m1b = self._addAutostackMetric(conn,
autostack1,
name="Autostacks/InstanceCount")
autostack2 = self._addAutostack(name="testCollectMetricData2",
region="us-west-2",
filters='{"tag:Name": ["*?*"]}')
m2 = self._addAutostackMetric(conn, autostack2)
autostack3 = self._addAutostack(
name="testCollectMetricData3",
region="us-west-2",
filters='{"tag:Name": ["NothingShouldMatchThis"]}')
m3 = self._addAutostackMetric(conn, autostack3)
# Collection data for both autostack/metric combinations
collector = EC2InstanceMetricGetter()
self.addCleanup(collector.close)
requests = [
AutostackMetricRequest(refID=1, autostack=autostack1, metric=m1a),
AutostackMetricRequest(refID=2, autostack=autostack1, metric=m1b),
AutostackMetricRequest(refID=3, autostack=autostack2, metric=m2),
AutostackMetricRequest(refID=4, autostack=autostack3, metric=m3)
]
metricCollections = dict(
(collection.refID, collection)
for collection in collector.collectMetricData(requests=requests))
self.assertEqual(len(metricCollections), len(requests))
def checkSliceSorted(records):
sortedRecords = sorted(records, key=lambda record: record.timestamp)
self.assertSequenceEqual(records, sortedRecords)
def checkSliceUniqueTimestamps(records):
timestamps = tuple(record.timestamp for record in records)
for timestamp in timestamps:
self.assertIsInstance(timestamp, datetime)
self.assertItemsEqual(set(timestamps), timestamps)
collection1 = metricCollections[1]
collection2 = metricCollections[2]
collection3 = metricCollections[3]
collection4 = metricCollections[4]
# COLLECTION-1:
self.assertEqual(collection1.nextMetricTime, collection1.timeRange.end)
metricGroups = defaultdict(list)
for metricSlice in collection1.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append(
(metricSlice.instanceID, record.value))
foundValues = False
for _timestamp, values in metricGroups.iteritems():
if len(values) >= 0:
#print timestamp, values[:5]
foundValues = True
break
self.assertTrue(foundValues)
# COLLECTION-2:
self.assertEqual(collection2.nextMetricTime, collection2.timeRange.end)
metricGroups = defaultdict(list)
for metricSlice in collection2.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append(
(metricSlice.instanceID, record.value))
foundValues = False
for _timestamp, values in metricGroups.iteritems():
if len(values) >= 0:
#print timestamp, values[:5]
foundValues = True
break
self.assertTrue(foundValues)
# COLLECTION-3:
self.assertEqual(collection3.nextMetricTime, collection3.timeRange.end)
metricGroups = defaultdict(list)
metricTimestampInstanceHits = defaultdict(list)
for metricSlice in collection3.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append((metricSlice.instanceID,
record.value))
metricTimestampInstanceHits[record.timestamp].append(
metricSlice.instanceID)
foundAlignedItems = False
for _timestamp, values in metricGroups.iteritems():
if len(values) > 1:
#print timestamp, values[:5]
foundAlignedItems = True
break
self.assertTrue(foundAlignedItems)
# Make sure there were no duplicate timestamps in any one slice
for _timestamp, instances in metricTimestampInstanceHits.iteritems():
self.assertItemsEqual(instances, set(instances))
# COLLECTION-4 (there should be no matching instances for it):
self.assertEqual(len(collection4.slices), 0)
self.assertEqual(collection4.nextMetricTime, collection4.timeRange.end)
def setUpClass(cls):
# Load htm-it API Key as required by TestCaseBase
cls.apiKey = htm.it.app.config.get("security", "apikey")
cls.engine = repository.engineFactory()
def testCollectMetricData(self):
self.engine = repository.engineFactory(reset=True)
with self.engine.connect() as conn:
autostack1 = self._addAutostack(name="testCollectMetricData1",
region="us-east-1",
filters='{"tag:Name": ["*"]}')
m1a = self._addAutostackMetric(conn, autostack1)
m1b = self._addAutostackMetric(conn,
autostack1,
name="Autostacks/InstanceCount")
autostack2 = self._addAutostack(name="testCollectMetricData2",
region="us-west-2",
filters='{"tag:Name": ["*?*"]}')
m2 = self._addAutostackMetric(conn, autostack2)
autostack3 = self._addAutostack(
name="testCollectMetricData3",
region="us-west-2",
filters='{"tag:Name": ["NothingShouldMatchThis"]}')
m3 = self._addAutostackMetric(conn, autostack3)
# Collection data for both autostack/metric combinations
collector = EC2InstanceMetricGetter()
self.addCleanup(collector.close)
requests = [
AutostackMetricRequest(refID=1, autostack=autostack1, metric=m1a),
AutostackMetricRequest(refID=2, autostack=autostack1, metric=m1b),
AutostackMetricRequest(refID=3, autostack=autostack2, metric=m2),
AutostackMetricRequest(refID=4, autostack=autostack3, metric=m3)
]
metricCollections = dict(
(collection.refID, collection)
for collection in collector.collectMetricData(requests=requests))
self.assertEqual(len(metricCollections), len(requests))
def checkSliceSorted(records):
sortedRecords = sorted(records,
key=lambda record: record.timestamp)
self.assertSequenceEqual(records, sortedRecords)
def checkSliceUniqueTimestamps(records):
timestamps = tuple(record.timestamp for record in records)
for timestamp in timestamps:
self.assertIsInstance(timestamp, datetime)
self.assertItemsEqual(set(timestamps), timestamps)
collection1 = metricCollections[1]
collection2 = metricCollections[2]
collection3 = metricCollections[3]
collection4 = metricCollections[4]
# COLLECTION-1:
self.assertEqual(collection1.nextMetricTime, collection1.timeRange.end)
metricGroups = defaultdict(list)
for metricSlice in collection1.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append(
(metricSlice.instanceID, record.value))
foundValues = False
for _timestamp, values in metricGroups.iteritems():
if len(values) >= 0:
#print timestamp, values[:5]
foundValues = True
break
self.assertTrue(foundValues)
# COLLECTION-2:
self.assertEqual(collection2.nextMetricTime, collection2.timeRange.end)
metricGroups = defaultdict(list)
for metricSlice in collection2.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append(
(metricSlice.instanceID, record.value))
foundValues = False
for _timestamp, values in metricGroups.iteritems():
if len(values) >= 0:
#print timestamp, values[:5]
foundValues = True
break
self.assertTrue(foundValues)
# COLLECTION-3:
self.assertEqual(collection3.nextMetricTime, collection3.timeRange.end)
metricGroups = defaultdict(list)
metricTimestampInstanceHits = defaultdict(list)
for metricSlice in collection3.slices:
checkSliceSorted(metricSlice.records)
checkSliceUniqueTimestamps(metricSlice.records)
for record in metricSlice.records:
metricGroups[record.timestamp].append(
(metricSlice.instanceID, record.value))
metricTimestampInstanceHits[record.timestamp].append(
metricSlice.instanceID)
foundAlignedItems = False
for _timestamp, values in metricGroups.iteritems():
if len(values) > 1:
#print timestamp, values[:5]
foundAlignedItems = True
break
self.assertTrue(foundAlignedItems)
# Make sure there were no duplicate timestamps in any one slice
for _timestamp, instances in metricTimestampInstanceHits.iteritems():
self.assertItemsEqual(instances, set(instances))
# COLLECTION-4 (there should be no matching instances for it):
self.assertEqual(len(collection4.slices), 0)
self.assertEqual(collection4.nextMetricTime, collection4.timeRange.end)
def testCollectMetricStatistics(self):
expectedStatisticNames = ["min", "max"]
def validateStats(stats):
self.assertIsInstance(stats, (list, tuple))
timestamps = []
for instanceMetrics in stats:
self.assertEqual(len(instanceMetrics.records), 1)
record = instanceMetrics.records[0]
self.assertIsInstance(record.value, dict)
self.assertGreater(len(record.value), 0)
self.assertTrue(set(
record.value.iterkeys()).issubset(expectedStatisticNames),
msg=record.value)
for metricValue in record.value.itervalues():
self.assertIsInstance(metricValue,
float,
msg=instanceMetrics)
self.assertFalse(math.isnan(metricValue))
timestamps.append(record.timestamp)
# Verify that all the stats timestamps are the same
if timestamps:
self.assertSequenceEqual(timestamps,
[timestamps[0]] * len(timestamps))
# Collection data for both autostack/metric combinations
collector = EC2InstanceMetricGetter()
self.addCleanup(collector.close)
def _createAutostackMetric(conn, name, region, filters):
autostackDict = repository.addAutostack(
conn, name=name, region=region, filters=json.dumps(filters))
modelSpec = {
"modelParams": {},
"datasource": "autostack",
"metricSpec": {
"slaveDatasource": "cloudwatch",
"slaveMetric": {
"metric": "CPUUtilization",
"namespace": "AWS/EC2"
},
"autostackId": autostackDict["uid"]
}
}
metricDict = repository.addMetric(
conn,
datasource="autostack",
name="CPUUtilization",
description=(
"CPUUtilization on HTM-IT Autostack {0} in us-west-2 "
"region").format(name),
server="Autostacks/{0}".format(autostackDict["uid"]),
location=region,
tag_name=name,
parameters=htmengine.utils.jsonEncode(modelSpec),
poll_interval=300,
status=MetricStatus.UNMONITORED)
repository.addMetricToAutostack(conn, autostackDict["uid"],
metricDict["uid"])
autostackObj = type("MutableAutostack", (object, ),
autostackDict)()
autostackObj.filters = json.loads(autostackObj.filters)
metricObj = type("MutableMetric", (object, ), metricDict)()
return autostackObj, metricObj
# All instances in us-east-1
engine = repository.engineFactory()
with engine.begin() as conn:
autostack1, m1 = (_createAutostackMetric(
conn,
name="testCollectMetricStats1",
region="us-east-1",
filters={"tag:Name": ["*"]}))
stats1 = collector.collectMetricStatistics(autostack=autostack1,
metric=m1)
print "STATS1:", stats1
validateStats(stats1)
self.assertGreaterEqual(len(stats1), 1)
# All instances in us-west-2
autostack2, m2 = _createAutostackMetric(
conn,
name="testCollectMetricStats2",
region="us-west-2",
filters={"tag:Name": ["*"]})
stats2 = collector.collectMetricStatistics(autostack=autostack2,
metric=m2)
print "STATS2:", stats2
validateStats(stats2)
self.assertGreater(len(stats2), 1)
# No matching instances in us-west-2
autostack3, m3 = (_createAutostackMetric(
conn,
name="testCollectMetricStatistics3",
region="us-west-2",
filters={"tag:Name": ["NothingShouldMatchThis"]}))
stats3 = collector.collectMetricStatistics(autostack=autostack3,
metric=m3)
print "STATS3:", stats3
validateStats(stats3)
self.assertEqual(len(stats3), 0)
def messageHandler(self, message):
""" Inspect all inbound model results in a batch for anomaly thresholds and
trigger notifications where applicable.
:param amqp.messages.ConsumerMessage message: ``message.body`` is a
serialized batch of model inference results generated in
``AnomalyService`` and must be deserialized using
``AnomalyService.deserializeModelResult()``. The message conforms to
htmengine/runtime/json_schema/model_inference_results_msg_schema.json
"""
if message.properties.headers and "dataType" in message.properties.headers:
# Not a model inference result
message.ack()
return
htm.it.app.config.loadConfig() # reload config on every batch
engine = repository.engineFactory()
# Cache minimum threshold to trigger any notification to avoid permuting
# settings x metricDataRows
try:
try:
batch = AnomalyService.deserializeModelResult(message.body)
except Exception:
self._log.exception("Error deserializing model result")
raise
# Load all settings for all users (once per incoming batch)
with engine.connect() as conn:
settings = repository.retryOnTransientErrors(
repository.getAllNotificationSettings)(conn)
self._log.debug("settings: %r" % settings)
if settings:
minThreshold = min(setting.sensitivity for setting in settings)
else:
minThreshold = 0.99999
metricInfo = batch["metric"]
metricId = metricInfo["uid"]
resource = metricInfo["resource"]
for row in batch["results"]:
if row["anomaly"] >= minThreshold:
rowDatetime = datetime.utcfromtimestamp(row["ts"])
if not settings:
# There are no device notification settings stored on this server,
# no notifications will be generated. However, log that a
# an anomaly was detected and notification would be sent if there
# were any configured devices
self._log.info("<%r>" % (metricInfo) + (
"{TAG:APP.NOTIFICATION} Anomaly "
"detected at %s, but no devices are "
"configured.") % rowDatetime)
continue
for settingObj in settings:
if row["rowid"] <= 1000:
continue # Not enough data
if rowDatetime < datetime.utcnow() - timedelta(seconds=3600):
continue # Skip old
if row["anomaly"] >= settingObj.sensitivity:
# First let's clear any old users out of the database.
with engine.connect() as conn:
repository.retryOnTransientErrors(
repository.deleteStaleNotificationDevices)(
conn, _NOTIFICATION_DEVICE_STALE_DAYS)
# If anomaly_score meets or exceeds any of the device
# notification sensitivity settings, trigger notification.
# repository.addNotification() will handle throttling.
notificationId = str(uuid.uuid4())
with engine.connect() as conn:
result = repository.retryOnTransientErrors(
repository.addNotification)(conn,
uid=notificationId,
server=resource,
metric=metricId,
rowid=row["rowid"],
device=settingObj.uid,
windowsize=(
settingObj.windowsize),
timestamp=rowDatetime,
acknowledged=0,
seen=0)
self._log.info("NOTIFICATION=%s SERVER=%s METRICID=%s DEVICE=%s "
"Notification generated. " % (notificationId,
resource, metricId,
settingObj.uid))
if (result is not None and
result.rowcount > 0 and
settingObj.email_addr):
# Notification was generated. Attempt to send email
with engine.connect() as conn:
notificationObj = repository.getNotification(conn,
notificationId)
self.sendNotificationEmail(engine,
settingObj,
notificationObj)
finally:
message.ack()
# Do cleanup
with engine.connect() as conn:
repository.clearOldNotifications(conn) # Delete all notifications outside
def testCollectAndPublishMetrics(self):
# Start Metric Collector, create a set of Metrics, wait for it to collect
# some metrics and to publish them to the metric_exchange, then validate
# attributes of the published metrics.
#
# TODO Add more metric types
# TODO Deeper validation of the published metrics
# Start our own instance of metric collector and wait for data points
with self._startModelSchedulerSubprocess() as modelSchedulerSubprocess, \
self._startMetricCollectorSubprocess() as metricCollectorSubprocess:
# Create some models for metric collector to harvest
region = "us-west-2"
namespace = "AWS/EC2"
resourceType = ResourceTypeNames.EC2_INSTANCE
engine = repository.engineFactory()
adapter = createCloudwatchDatasourceAdapter()
ec2Instances = adapter.describeResources(region=region,
resourceType=resourceType)
self.assertGreater(len(ec2Instances), 0)
maxModels = 10
ec2Instances = ec2Instances[:min(maxModels, Quota.getInstanceQuota(
))]
metricInstances = []
_LOGGER.info("Starting %d models", len(ec2Instances))
self.assertGreater(len(ec2Instances), 0)
for ec2Instance in ec2Instances:
metricSpec = {
"region": region,
"namespace": namespace,
"metric": "CPUUtilization",
"dimensions": {
"InstanceId": ec2Instance["resID"]
}
}
modelSpec = {
"datasource": "cloudwatch",
"metricSpec": metricSpec
}
metricId = adapter.monitorMetric(modelSpec)
with engine.connect() as conn:
repository.setMetricStatus(conn, metricId,
MetricStatus.ACTIVE)
metricInstances.append(metricId)
_LOGGER.info("Waiting for results from models...")
seenMetricIDs = set()
allMetricIDs = set(metricInstances)
# Register a timeout so we won't deadlock the test
def onTimeout(resultsQueueName):
_LOGGER.error(
"Timed out waiting to get results from models; numResults=%d; "
"expected=%d", len(seenMetricIDs), len(allMetricIDs))
# HACK delete model swapper results queue to abort the consumer
try:
with MessageBusConnector() as bus:
bus.deleteMessageQueue(resultsQueueName)
except Exception:
_LOGGER.exception("Failed to delete results mq=%s",
resultsQueueName)
raise
with ModelSwapperInterface() as modelSwapper:
with modelSwapper.consumeResults() as consumer:
timer = threading.Timer(
120, onTimeout, args=[modelSwapper._resultsQueueName])
timer.start()
try:
for batch in consumer:
seenMetricIDs.add(batch.modelID)
batch.ack()
if seenMetricIDs == allMetricIDs:
break
else:
self.fail(
"Expected %d results, but got only %d: %s" % (
len(allMetricIDs),
len(seenMetricIDs),
seenMetricIDs,
))
_LOGGER.info("Got %d results from models",
len(seenMetricIDs))
finally:
timer.cancel()
# Terminate metric_collector subprocess gracefully to avoid too much
# error logging junk on the terminal
metricCollectorSubprocess.send_signal(signal.SIGINT)
# Terminate metric_collector subprocess gracefully to avoid too much
# error logging junk on the terminal
modelSchedulerSubprocess.send_signal(signal.SIGINT)
def setUpClass(cls):
"""
Setup steps for all test cases.
Focus for these is to cover all API checks for ModelDataHandler.
Hence, this does all setup creating metric, waiting for
metricData across all testcases, all API call for querying metricData
will be against single metric created in setup
Setup Process
1) Update conf with aws credentials, ManagedTempRepository will not
work in this test
2) Select test instance such that its running from longer time,
We are using instance older than 15 days
3) Create Metric, wait for min metricData rows to become available
Set to 100, configurable
4) Pick testRowId, set it lower value this will make sure to have
Non NULL value for anomaly_score field for given row while invoking
GET with consitions, set to 5
5) Decide queryParams for anomalyScore, to and from timestamp
"""
cls.headers = getDefaultHTTPHeaders(htm.it.app.config)
# All other sevices needs AWS credentials to work
# Set AWS credentials
htm.it.app.config.loadConfig()
# Select test instance such that its running from longer time
g_logger.info("Getting long-running EC2 Instances")
instances = aws_utils.getLongRunningEC2Instances("us-west-2",
htm.it.app.config.get("aws", "aws_access_key_id"),
htm.it.app.config.get("aws", "aws_secret_access_key"), 15)
testInstance = instances[randrange(1, len(instances))]
createModelData = {
"region": "us-west-2",
"namespace": "AWS/EC2",
"datasource": "cloudwatch",
"metric": "CPUUtilization",
"dimensions": {
"InstanceId": testInstance.id
}
}
# Number of minimum rows
cls.minDataRows = 100
cls.app = TestApp(models_api.app.wsgifunc())
# create test metric
g_logger.info("Creating test metric; modelSpec=%s", createModelData)
response = cls.app.put("/", utils.jsonEncode(createModelData),
headers=cls.headers)
postResult = utils.jsonDecode(response.body)
maxWaitTime = 600
waitTimeMetricData = 0
waitAnomalyScore = 0
# Wait for enough metric data to be available
cls.uid = postResult[0]["uid"]
engine = repository.engineFactory()
with engine.connect() as conn:
cls.metricData = [row for row
in repository.getMetricData(conn, cls.uid)]
with engine.connect() as conn:
cls.testMetric = repository.getMetric(conn, cls.uid)
# Confirm that we have enough metricData
g_logger.info("Waiting for metric data")
while (len(cls.metricData) < cls.minDataRows and
waitTimeMetricData < maxWaitTime):
g_logger.info("not ready, waiting for metric data: got %d of %d ...",
len(cls.metricData), cls.minDataRows)
time.sleep(5)
waitTimeMetricData += 5
with engine.connect() as conn:
cls.metricData = [row for row
in repository.getMetricData(conn, cls.uid)]
# taking lower value for testRowId, this will make sure to have
# Non NULL value for anomaly_score field for given row
cls.testRowId = 5
with engine.connect() as conn:
cls.testMetricRow = (repository.getMetricData(conn,
cls.uid,
rowid=cls.testRowId)
.fetchone())
# Make sure we did not receive None etc for anomaly score
g_logger.info("cls.testMetricRow.anomaly_score=%r",
cls.testMetricRow.anomaly_score)
g_logger.info("waitAnomalyScore=%r", waitAnomalyScore)
while (cls.testMetricRow.anomaly_score is None and
waitAnomalyScore < maxWaitTime):
g_logger.info("anomaly_score not ready, sleeping...")
time.sleep(5)
waitAnomalyScore += 5
with engine.connect() as conn:
cls.testMetricRow = (repository.getMetricData(conn,
cls.uid,
rowid=cls.testRowId)
.fetchone())
# Decide queryParams for anomalyScore, to and from timestamp
cls.testAnomalyScore = cls.testMetricRow.anomaly_score
cls.testTimeStamp = cls.testMetricRow.timestamp
def GET(self):
"""
Get metrics, sorted by AWS name tag / instance ID
:returns: List of metrics
:rtype: list
Example request::
GET /_anomalies/name
Example response::
[
{
"status": 1,
"last_rowid": 4033,
"display_name": "jenkins-master (us-west-2/AWS/EC2/i-12345678)",
"description": "NetworkIn on EC2 instance i-12345678 in us-west-2",
"name": "AWS/EC2/NetworkIn",
"last_timestamp": "2014-04-14 20:29:00",
"poll_interval": 300,
"server": "us-west-2/AWS/EC2/i-12345678",
"tag_name": "jenkins-master",
"datasource": "cloudwatch",
"location": "us-west-2",
"message": null,
"parameters": {
"InstanceId": "i-12345678",
"region": "us-west-2"
},
"uid": "0b6b97022fdb4134936aae92aa67393b"
},
...
]
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
with engine.connect() as conn:
modelIterator = repository.getAllMetrics(
conn, fields=getMetricDisplayFields(conn))
modelsList = [
convertMetricRowToMetricDict(model)
for model in modelIterator
]
# Sort by tag_name, and then parameters=>InstanceID
def cmpFn(model1, model2):
name1 = model1["tag_name"]
name2 = model2["tag_name"]
id1 = model1["parameters"].get("InstanceID")
id2 = model2["parameters"].get("InstanceID")
if name1 and not name2:
return -1
elif name2 and not name1:
return 1
elif name1 != name2:
return cmp(name1, name2)
elif id1 and not id2:
return -1
elif id2 and not id1:
return 1
elif id1 != id2:
return cmp(id1, id2)
return 0
modelsList.sort(cmpFn)
return utils.jsonEncode(modelsList)
except (web.HTTPError) as ex:
log.info(str(ex) or repr(ex))
raise ex
except Exception as ex:
log.exception("GET Failed")
raise web.internalerror(str(ex) or repr(ex))
def messageHandler(self, message):
""" Inspect all inbound model results in a batch for anomaly thresholds and
trigger notifications where applicable.
:param amqp.messages.ConsumerMessage message: ``message.body`` is a
serialized batch of model inference results generated in
``AnomalyService`` and must be deserialized using
``AnomalyService.deserializeModelResult()``. The message conforms to
htmengine/runtime/json_schema/model_inference_results_msg_schema.json
"""
if message.properties.headers and "dataType" in message.properties.headers:
# Not a model inference result
message.ack()
return
htm.it.app.config.loadConfig() # reload config on every batch
engine = repository.engineFactory()
# Cache minimum threshold to trigger any notification to avoid permuting
# settings x metricDataRows
try:
try:
batch = AnomalyService.deserializeModelResult(message.body)
except Exception:
self._log.exception("Error deserializing model result")
raise
# Load all settings for all users (once per incoming batch)
with engine.connect() as conn:
settings = repository.retryOnTransientErrors(
repository.getAllNotificationSettings)(conn)
self._log.debug("settings: %r" % settings)
if settings:
minThreshold = min(setting.sensitivity for setting in settings)
else:
minThreshold = 0.99999
metricInfo = batch["metric"]
metricId = metricInfo["uid"]
resource = metricInfo["resource"]
for row in batch["results"]:
if row["anomaly"] >= minThreshold:
rowDatetime = datetime.utcfromtimestamp(row["ts"])
if not settings:
# There are no device notification settings stored on this server,
# no notifications will be generated. However, log that a
# an anomaly was detected and notification would be sent if there
# were any configured devices
self._log.info("<%r>" % (metricInfo) +
("{TAG:APP.NOTIFICATION} Anomaly "
"detected at %s, but no devices are "
"configured.") % rowDatetime)
continue
for settingObj in settings:
if row["rowid"] <= 1000:
continue # Not enough data
if rowDatetime < datetime.utcnow() - timedelta(
seconds=3600):
continue # Skip old
if row["anomaly"] >= settingObj.sensitivity:
# First let's clear any old users out of the database.
with engine.connect() as conn:
repository.retryOnTransientErrors(
repository.deleteStaleNotificationDevices)(
conn, _NOTIFICATION_DEVICE_STALE_DAYS)
# If anomaly_score meets or exceeds any of the device
# notification sensitivity settings, trigger notification.
# repository.addNotification() will handle throttling.
notificationId = str(uuid.uuid4())
with engine.connect() as conn:
result = repository.retryOnTransientErrors(
repository.addNotification)(
conn,
uid=notificationId,
server=resource,
metric=metricId,
rowid=row["rowid"],
device=settingObj.uid,
windowsize=(settingObj.windowsize),
timestamp=rowDatetime,
acknowledged=0,
seen=0)
self._log.info(
"NOTIFICATION=%s SERVER=%s METRICID=%s DEVICE=%s "
"Notification generated. " %
(notificationId, resource, metricId,
settingObj.uid))
if (result is not None and result.rowcount > 0
and settingObj.email_addr):
# Notification was generated. Attempt to send email
with engine.connect() as conn:
notificationObj = repository.getNotification(
conn, notificationId)
self.sendNotificationEmail(
engine, settingObj, notificationObj)
finally:
message.ack()
# Do cleanup
with engine.connect() as conn:
repository.clearOldNotifications(
conn) # Delete all notifications outside
def GET(self, period):
"""
Get metrics, sorted by anomalies over specified period (hours)
:param period: Period (hours) over which to consider anomalies for sort
order
:type period: int
:returns: List of metrics
:rtype: list
Example request::
GET /_anomalies/period/{period}
Example response::
[
{
"status": 1,
"last_rowid": 4033,
"display_name": "jenkins-master (us-west-2/AWS/EC2/i-12345678)",
"description": "NetworkIn on EC2 instance i-12345678 in us-west-2",
"name": "AWS/EC2/NetworkIn",
"last_timestamp": "2014-04-14 20:29:00",
"poll_interval": 300,
"server": "us-west-2/AWS/EC2/i-12345678",
"tag_name": "jenkins-master",
"datasource": "cloudwatch",
"location": "us-west-2",
"message": null,
"parameters": {
"InstanceId": "i-12345678",
"region": "us-west-2"
},
"uid": "0b6b97022fdb4134936aae92aa67393b"
},
...
]
"""
try:
self.addStandardHeaders()
engine = repository.engineFactory()
with engine.connect() as conn:
modelIterator = repository.getAllMetrics(
conn, fields=getMetricDisplayFields(conn))
displayValuesMap = repository.getMetricIdsSortedByDisplayValue(
conn, period)
# Keep track of the largest model display value for each server
serverValues = defaultdict(float)
modelsList = []
for model in modelIterator:
val = displayValuesMap.get(model.uid)
if val is not None:
serverValues[model.server] = max(
float(val), serverValues[model.server])
modelsList.append(convertMetricRowToMetricDict(model))
# Sort by the primary key. The order within each server is preserved
# from previous sort.
def getModelRankByServer(model):
return (-serverValues[model["server"]], model["server"],
model["name"])
modelsList = sorted(modelsList, key=getModelRankByServer)
return utils.jsonEncode(modelsList)
except (web.HTTPError) as ex:
log.info(str(ex) or repr(ex))
raise ex
except Exception as ex:
log.exception("GET Failed")
raise web.internalerror(str(ex) or repr(ex))
