def deleteModel(metricId):
try:
with web.ctx.connFactory() as conn:
metricRow = repository.getMetric(conn, metricId)
except app_exceptions.ObjectNotFoundError:
raise web.notfound(
"ObjectNotFoundError Metric not found: Metric ID: %s" %
metricId)
if metricRow.datasource == "autostack":
raise NotAllowedResponse({
"result": ("Not a standalone model=%s; datasource=%s. Unable"
" to DELETE from this endpoint") % (
metricId,
metricRow.datasource,
)
})
log.debug("Deleting model for %s metric=%s", metricRow.datasource,
metricId)
with web.ctx.connFactory() as conn:
repository.deleteModel(conn, metricId)
# NOTE: this is the new way using datasource adapters
try:
createDatasourceAdapter(
metricRow.datasource).unmonitorMetric(metricId)
except app_exceptions.ObjectNotFoundError:
raise web.notfound(
"ObjectNotFoundError Metric not found: Metric ID: %s" %
(metricId, ))
return utils.jsonEncode({'result': 'success'})
def deleteModel(metricId):
try:
with web.ctx.connFactory() as conn:
metricRow = repository.getMetric(conn, metricId)
except app_exceptions.ObjectNotFoundError:
raise web.notfound("ObjectNotFoundError Metric not found: Metric ID: %s"
% metricId)
if metricRow.datasource == "autostack":
raise NotAllowedResponse(
{"result":
("Not a standalone model=%s; datasource=%s. Unable"
" to DELETE from this endpoint")
% (metricId, metricRow.datasource,)
})
log.debug("Deleting model for %s metric=%s", metricRow.datasource,
metricId)
with web.ctx.connFactory() as conn:
repository.deleteModel(conn, metricId)
# NOTE: this is the new way using datasource adapters
try:
createDatasourceAdapter(metricRow.datasource).unmonitorMetric(metricId)
except app_exceptions.ObjectNotFoundError:
raise web.notfound(
"ObjectNotFoundError Metric not found: Metric ID: %s" % (metricId,))
return utils.jsonEncode({'result': 'success'})
def testInstanceDefaultsHandlerPOST(self, listMetricIDsMock, _engineFactoryMock):
"""
Test for POST "/_instances/region/namespace/instanceId"
response is validated for appropriate headers, body and status
"""
listMetricIDsMock.return_value = []
region = "us-west-2"
# Currently we are not supporting certain namespaces
# unsupportedNamespaces reflects such unsupported namespaces
# These namespaces are currently validated for "400 Bad Request"
# and expected error message.
# Update this list with changes in namespace support
unsupportedNamespaces = ("Billing", "StorageGateway")
for namespace in unsupportedNamespaces:
response = self.app.post("/%s/AWS/%s/abcd1234" % (region, namespace), headers=self.headers, status="*")
assertions.assertBadRequest(self, response, "json")
result = json.loads(response.body)["result"]
self.assertTrue(result.startswith("Not supported."))
cwAdapter = datasource.createDatasourceAdapter("cloudwatch")
supportedNamespaces = set()
for resourceInfo in cwAdapter.describeSupportedMetrics().values():
for metricInfo in resourceInfo.values():
supportedNamespaces.add(metricInfo["namespace"])
for namespace in supportedNamespaces:
response = self.app.post("/%s/%s/abcd1234" % (region, namespace), headers=self.headers)
assertions.assertSuccess(self, response)
result = app_utils.jsonDecode(response.body)
self.assertIsInstance(result, dict)
self.assertEqual(result, {"result": "success"})
def testImportModelAutostack(self, adapterMock, ctxMock, repositoryMock,
quotaRepositoryMock, _engineMock):
nativeMetric = {
"type": "autostack",
"name": "test1",
"region": "us-west-2",
"datasource": "cloudwatch",
"filters": {
"tag:Name": ["*d*"]
},
"metric": {
"metric": "DiskWriteBytes",
"namespace": "AWS/EC2"
}
}
quotaRepositoryMock.getInstanceCount.return_value = 0
adapter = createDatasourceAdapter("autostack")
importModelMock = create_autospec(adapter.importModel)
adapterMock.return_value.importModel = importModelMock
result = models_api.ModelHandler.createModel(nativeMetric)
self.assertIs(result, repositoryMock.getMetric.return_value)
repositoryMock.getMetric.assert_called_once_with(
ctxMock.connFactory.return_value.__enter__.return_value,
adapterMock.return_value.importModel.return_value)
def testImportModelAutostack(self, adapterMock, ctxMock, repositoryMock,
quotaRepositoryMock, _engineMock):
nativeMetric = {
"type": "autostack",
"name": "test1",
"region": "us-west-2",
"datasource": "cloudwatch",
"filters": {
"tag:Name": [
"*d*"
]
},
"metric": {
"metric": "DiskWriteBytes",
"namespace": "AWS/EC2"
}
}
quotaRepositoryMock.getInstanceCount.return_value = 0
adapter = createDatasourceAdapter("autostack")
importModelMock = create_autospec(adapter.importModel)
adapterMock.return_value.importModel = importModelMock
result = models_api.ModelHandler.createModel(nativeMetric)
self.assertIs(result, repositoryMock.getMetric.return_value)
repositoryMock.getMetric.assert_called_once_with(
ctxMock.connFactory.return_value.__enter__.return_value,
adapterMock.return_value.importModel.return_value)
def DELETE(self, metricName):
adapter = createDatasourceAdapter("custom")
try:
adapter.deleteMetricByName(metricName)
except app_exceptions.ObjectNotFoundError:
raise web.notfound("Metric not found. Metric name=%s" % (metricName,))
self.addStandardHeaders()
return json.dumps({'result': 'success'})
def testCreateDatasourceAdapter(self):
""" Make sure createDatasourceAdapter is able to create all expected
adapters
"""
for datasourceName in self.EXPECTED_DATASOURCE_NAMES:
adapter = datasource_adapter_factory.createDatasourceAdapter(
datasourceName)
self.assertEqual(adapter._DATASOURCE, datasourceName)
self.assertEqual(adapter.__class__.__name__,
"_" + datasourceName.capitalize() + "DatasourceAdapter")
def DELETE(self, metricName):
adapter = createDatasourceAdapter("custom")
try:
adapter.deleteMetricByName(metricName)
except app_exceptions.ObjectNotFoundError:
raise web.notfound("Metric not found. Metric name=%s" %
(metricName, ))
self.addStandardHeaders()
return json.dumps({'result': 'success'})
def testCreateDatasourceAdapter(self):
""" Make sure createDatasourceAdapter is able to create all expected
adapters
"""
for datasourceName in self.EXPECTED_DATASOURCE_NAMES:
adapter = datasource_adapter_factory.createDatasourceAdapter(
datasourceName)
self.assertEqual(adapter._DATASOURCE, datasourceName)
self.assertEqual(
adapter.__class__.__name__,
"_" + datasourceName.capitalize() + "DatasourceAdapter")
def testInstanceDefaultsHandlerPOST(self, listMetricIDsMock,
_engineFactoryMock):
"""
Test for POST "/_instances/region/namespace/instanceId"
response is validated for appropriate headers, body and status
"""
listMetricIDsMock.return_value = []
region = "us-west-2"
# Currently we are not supporting certain namespaces
# unsupportedNamespaces reflects such unsupported namespaces
# These namespaces are currently validated for "400 Bad Request"
# and expected error message.
# Update this list with changes in namespace support
unsupportedNamespaces = ("Billing", "StorageGateway")
for namespace in unsupportedNamespaces:
response = self.app.post("/%s/AWS/%s/abcd1234" %
(region, namespace),
headers=self.headers,
status="*")
assertions.assertBadRequest(self, response, "json")
result = json.loads(response.body)["result"]
self.assertTrue(result.startswith("Not supported."))
cwAdapter = datasource.createDatasourceAdapter("cloudwatch")
supportedNamespaces = set()
for resourceInfo in cwAdapter.describeSupportedMetrics().values():
for metricInfo in resourceInfo.values():
supportedNamespaces.add(metricInfo["namespace"])
for namespace in supportedNamespaces:
response = self.app.post("/%s/%s/abcd1234" % (region, namespace),
headers=self.headers)
assertions.assertSuccess(self, response)
result = app_utils.jsonDecode(response.body)
self.assertIsInstance(result, dict)
self.assertEqual(result, {"result": "success"})
def _collect(task):
""" Executed via multiprocessing Pool: Collect metric data and corresponding
resource status.
:param task: a _DataCollectionTask instance
"""
log = htm_it_logging.getExtendedLogger(MetricCollector.__name__)
startTime = time.time()
result = _DataCollectionResult(metricID=task.metricID)
dsAdapter = None
try:
dsAdapter = createDatasourceAdapter(task.datasource)
result.data, result.nextCallStart = dsAdapter.getMetricData(
metricSpec=task.metricSpec,
start=task.rangeStart,
end=None)
except Exception as e: # pylint: disable=W0703
log.exception("getMetricData failed in task=%s", task)
result.data = e
try:
if task.updateResourceStatus:
result.resourceStatus = dsAdapter.getMetricResourceStatus(
metricSpec=task.metricSpec)
except Exception as e: # pylint: disable=W0703
log.exception("getMetricResourceStatus failed in task=%s", task)
result.resourceStatus = e
result.duration = time.time() - startTime
task.resultsQueue.put(result)
return True
def _exportNativeMetric(metric):
return createDatasourceAdapter(metric.datasource).exportModel(
metric.uid)
def POST(self, region, namespace, instanceId=None):
"""
Monitor a set of default metrics for a specific instance
::
POST /_instances/{region}/{namespace}/{instanceId}
Returns:
::
{
"result": "success"
}
OR
Monitor a set of default metrics for multiple specific instances
::
POST /_instances/{region}/{namespace}
POST data:
::
[
{instanceId},
...
]
Returns:
::
{
"result": "success"
}
Note:
We expect a 200 OK even when attempting to POST to an instanece in the wrong
namespace or the wrong region, this saves the overhead of asking AWS if
we're dealing with a valid instance in the given namespace or region
with every POST request.
We expect the CLI user to know the correct instance ID.
"""
if instanceId is None:
try:
dimension = None
instances = json.loads(web.data())
except:
raise InvalidRequestResponse({"result": "Invalid request"})
else:
(dimension, _, identifier) = instanceId.rpartition("/")
instances = [identifier]
# Check for invalid region or namespace
cwAdapter = datasource.createDatasourceAdapter("cloudwatch")
supportedRegions = set(region for region, _desc in
cwAdapter.describeRegions())
if region not in supportedRegions:
raise InvalidRequestResponse({"result": ("Not supported. Region '%s' was"
" not found.") % region})
supportedNamespaces = set()
for resourceInfo in cwAdapter.describeSupportedMetrics().values():
for metricInfo in resourceInfo.values():
supportedNamespaces.add(metricInfo["namespace"])
if namespace not in supportedNamespaces:
raise InvalidRequestResponse({"result": ("Not supported. Namespace '%s' "
"was not found.") % namespace})
try:
# Attempt to validate instances list using validictory
validate(instances, _INSTANCES_MODEL_CREATION_SCHEMA)
except ValidationError as e:
response = "InvalidArgumentsError: " + str(e)
raise InvalidRequestResponse({"result": response})
if instances:
for instanceId in instances:
server = "/".join([region, namespace, instanceId])
with web.ctx.connFactory() as conn:
numMetrics = repository.getMetricCountForServer(conn, server)
if numMetrics > 0:
# Metrics exist for instance id.
pass
else:
try:
resourceType = cloudwatch.NAMESPACE_TO_RESOURCE_TYPE[namespace]
except KeyError:
raise InvalidRequestResponse({"result": "Not supported."})
modelSpecs = cwAdapter.getDefaultModelSpecs(
resourceType, region, instanceId, dimension)
for modelSpec in modelSpecs:
ModelHandler.createModel(modelSpec)
self.addStandardHeaders()
return encodeJson({"result": "success"})
def POST(self, region, namespace, instanceId=None):
"""
Monitor a set of default metrics for a specific instance
::
POST /_instances/{region}/{namespace}/{instanceId}
Returns:
::
{
"result": "success"
}
OR
Monitor a set of default metrics for multiple specific instances
::
POST /_instances/{region}/{namespace}
POST data:
::
[
{instanceId},
...
]
Returns:
::
{
"result": "success"
}
Note:
We expect a 200 OK even when attempting to POST to an instanece in the wrong
namespace or the wrong region, this saves the overhead of asking AWS if
we're dealing with a valid instance in the given namespace or region
with every POST request.
We expect the CLI user to know the correct instance ID.
"""
if instanceId is None:
try:
dimension = None
instances = json.loads(web.data())
except:
raise InvalidRequestResponse({"result": "Invalid request"})
else:
(dimension, _, identifier) = instanceId.rpartition("/")
instances = [identifier]
# Check for invalid region or namespace
cwAdapter = datasource.createDatasourceAdapter("cloudwatch")
supportedRegions = set(
region for region, _desc in cwAdapter.describeRegions())
if region not in supportedRegions:
raise InvalidRequestResponse({
"result": ("Not supported. Region '%s' was"
" not found.") % region
})
supportedNamespaces = set()
for resourceInfo in cwAdapter.describeSupportedMetrics().values():
for metricInfo in resourceInfo.values():
supportedNamespaces.add(metricInfo["namespace"])
if namespace not in supportedNamespaces:
raise InvalidRequestResponse({
"result": ("Not supported. Namespace '%s' "
"was not found.") % namespace
})
try:
# Attempt to validate instances list using validictory
validate(instances, _INSTANCES_MODEL_CREATION_SCHEMA)
except ValidationError as e:
response = "InvalidArgumentsError: " + str(e)
raise InvalidRequestResponse({"result": response})
if instances:
for instanceId in instances:
server = "/".join([region, namespace, instanceId])
with web.ctx.connFactory() as conn:
numMetrics = repository.getMetricCountForServer(
conn, server)
if numMetrics > 0:
# Metrics exist for instance id.
pass
else:
try:
resourceType = cloudwatch.NAMESPACE_TO_RESOURCE_TYPE[
namespace]
except KeyError:
raise InvalidRequestResponse(
{"result": "Not supported."})
modelSpecs = cwAdapter.getDefaultModelSpecs(
resourceType, region, instanceId, dimension)
for modelSpec in modelSpecs:
ModelHandler.createModel(modelSpec)
self.addStandardHeaders()
return encodeJson({"result": "success"})
def createModel(cls, modelSpec=None):
"""
NOTE MER-3479: this code path is presently incorrectly used for two
purposes:
* Creating CloudWatch models (correct)
* Importing of all types of metrics (not desirable; there should be a
separate endpoint or an import-specific flag in this endpoint for
importing that facilitates slightly different behavior, such as
suppressing certain errors to allow for re-import in case of tranisent
error part way through the prior import)
"""
if not modelSpec:
# Metric data is missing
log.error("Data is missing in request, raising BadRequest exception")
raise InvalidRequestResponse({"result": "Metric data is missing"})
# TODO MER-3479: import using import-specific endpoint
# NOTE: pending MER-3479, this is presently a hack for exercising
# the adapter import API
importing = False
if modelSpec.get("datasource") == "custom":
# Convert to new htm-it-custom metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeCustomModelSpec(modelSpec)
if "data" in modelSpec:
importing = True
elif (modelSpec.get("datasource") == "cloudwatch" and
"filters" not in modelSpec):
if "type" in modelSpec:
# The legacy cloudwatch import modelSpec had the "type" property
assert modelSpec["type"] == "metric", repr(modelSpec)
importing = True
# Convert to new htm-it-custom metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeCloudwatchModelSpec(modelSpec)
elif (modelSpec.get("datasource") == "autostack" or
modelSpec.get("type") == "autostack"):
importing = True
# Convert to new autostack metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeAutostackModelSpec(modelSpec)
try:
with web.ctx.connFactory() as conn:
with conn.begin():
adapter = createDatasourceAdapter(modelSpec["datasource"])
if modelSpec["datasource"] == "custom":
checkQuotaForCustomMetricAndRaise(conn)
else:
checkQuotaForInstanceAndRaise(
conn,
adapter.getInstanceNameForModelSpec(modelSpec))
try:
if importing:
# TODO MER-3479: import using import-specific endpoint
# NOTE: pending MER-3479, this is presently a hack for exercising
# the adapter import API
metricId = adapter.importModel(modelSpec)
else:
metricId = adapter.monitorMetric(modelSpec)
except app_exceptions.MetricAlreadyMonitored as e:
metricId = e.uid
return repository.getMetric(conn, metricId)
except (ValueError, app_exceptions.MetricNotSupportedError) as e:
raise InvalidRequestResponse({"result": repr(e)})
def createModel(cls, modelSpec=None):
"""
NOTE MER-3479: this code path is presently incorrectly used for two
purposes:
* Creating CloudWatch models (correct)
* Importing of all types of metrics (not desirable; there should be a
separate endpoint or an import-specific flag in this endpoint for
importing that facilitates slightly different behavior, such as
suppressing certain errors to allow for re-import in case of tranisent
error part way through the prior import)
"""
if not modelSpec:
# Metric data is missing
log.error(
"Data is missing in request, raising BadRequest exception")
raise InvalidRequestResponse({"result": "Metric data is missing"})
# TODO MER-3479: import using import-specific endpoint
# NOTE: pending MER-3479, this is presently a hack for exercising
# the adapter import API
importing = False
if modelSpec.get("datasource") == "custom":
# Convert to new htm-it-custom metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeCustomModelSpec(modelSpec)
if "data" in modelSpec:
importing = True
elif (modelSpec.get("datasource") == "cloudwatch"
and "filters" not in modelSpec):
if "type" in modelSpec:
# The legacy cloudwatch import modelSpec had the "type" property
assert modelSpec["type"] == "metric", repr(modelSpec)
importing = True
# Convert to new htm-it-custom metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeCloudwatchModelSpec(modelSpec)
elif (modelSpec.get("datasource") == "autostack"
or modelSpec.get("type") == "autostack"):
importing = True
# Convert to new autostack metric modelSpec format
# NOTE: backward compatibility during first phase refactoring
modelSpec = cls.upgradeAutostackModelSpec(modelSpec)
try:
with web.ctx.connFactory() as conn:
with conn.begin():
adapter = createDatasourceAdapter(modelSpec["datasource"])
if modelSpec["datasource"] == "custom":
checkQuotaForCustomMetricAndRaise(conn)
else:
checkQuotaForInstanceAndRaise(
conn,
adapter.getInstanceNameForModelSpec(modelSpec))
try:
if importing:
# TODO MER-3479: import using import-specific endpoint
# NOTE: pending MER-3479, this is presently a hack for exercising
# the adapter import API
metricId = adapter.importModel(modelSpec)
else:
metricId = adapter.monitorMetric(modelSpec)
except app_exceptions.MetricAlreadyMonitored as e:
metricId = e.uid
return repository.getMetric(conn, metricId)
except (ValueError, app_exceptions.MetricNotSupportedError) as e:
raise InvalidRequestResponse({"result": repr(e)})
def _exportNativeMetric(metric): return createDatasourceAdapter(metric.datasource).exportModel(metric.uid)
