1 # Copyright 2017 Intel Research and Development Ireland Limited
2 # *************************************************************
4 # This file is part of OSM Monitoring module
5 # All Rights Reserved to Intel Corporation
7 # Licensed under the Apache License, Version 2.0 (the "License"); you may
8 # not use this file except in compliance with the License. You may obtain
9 # a copy of the License at
11 # http://www.apache.org/licenses/LICENSE-2.0
13 # Unless required by applicable law or agreed to in writing, software
14 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
16 # License for the specific language governing permissions and limitations
19 # For those usages not covered by the Apache License, Version 2.0 please
20 # contact: helena.mcgough@intel.com or adrian.hoban@intel.com
22 """Carry out OpenStack metric requests via Gnocchi API."""
32 from osm_mon
.core
.message_bus
.producer
import KafkaProducer
33 from osm_mon
.core
.settings
import Config
34 from osm_mon
.plugins
.OpenStack
.common
import Common
35 from osm_mon
.plugins
.OpenStack
.response
import OpenStack_Response
37 log
= logging
.getLogger(__name__
)
40 "average_memory_utilization": "memory.usage",
41 "disk_read_ops": "disk.read.requests",
42 "disk_write_ops": "disk.write.requests",
43 "disk_read_bytes": "disk.read.bytes",
44 "disk_write_bytes": "disk.write.bytes",
45 "packets_dropped": "interface.if_dropped",
46 "packets_received": "interface.if_packets",
47 "packets_sent": "interface.if_packets",
48 "cpu_utilization": "cpu_util",
60 class Metrics(object):
61 """OpenStack metric requests performed via the Gnocchi API."""
64 """Initialize the metric actions."""
65 # Configure an instance of the OpenStack metric plugin
66 config
= Config
.instance()
69 # Initialise authentication for API requests
70 self
._common
= Common()
72 # Use the Response class to generate valid json response messages
73 self
._response
= OpenStack_Response()
75 # Initializer a producer to send responses back to SO
76 self
._producer
= KafkaProducer("metric_response")
78 def metric_calls(self
, message
, vim_uuid
):
79 """Consume info from the message bus to manage metric requests."""
81 values
= json
.loads(message
.value
)
83 values
= yaml
.safe_load(message
.value
)
84 log
.info("OpenStack metric action required.")
86 auth_token
= Common
.get_auth_token(vim_uuid
)
88 endpoint
= Common
.get_endpoint("metric", vim_uuid
)
90 if 'metric_name' in values
and values
['metric_name'] not in METRIC_MAPPINGS
.keys():
91 raise ValueError('Metric ' + values
['metric_name'] + ' is not supported.')
93 if message
.key
== "create_metric_request":
95 metric_details
= values
['metric_create_request']
96 metric_id
, resource_id
, status
= self
.configure_metric(
97 endpoint
, auth_token
, metric_details
)
99 # Generate and send a create metric response
101 resp_message
= self
._response
.generate_response(
102 'create_metric_response', status
=status
,
103 cor_id
=metric_details
['correlation_id'],
104 metric_id
=metric_id
, r_id
=resource_id
)
105 log
.info("Response messages: %s", resp_message
)
106 self
._producer
.create_metrics_resp(
107 'create_metric_response', resp_message
)
108 except Exception as exc
:
109 log
.warning("Failed to create response: %s", exc
)
111 elif message
.key
== "read_metric_data_request":
112 # Read all metric data related to a specified metric
113 timestamps
, metric_data
= self
.read_metric_data(
114 endpoint
, auth_token
, values
)
116 # Generate and send a response message
119 metric_id
= self
.get_metric_id(endpoint
, auth_token
, METRIC_MAPPINGS
[values
['metric_name']],
120 values
['resource_uuid'])
121 resp_message
= self
._response
.generate_response(
122 'read_metric_data_response',
124 m_name
=values
['metric_name'],
125 r_id
=values
['resource_uuid'],
126 cor_id
=values
['correlation_id'],
127 times
=timestamps
, metrics
=metric_data
)
128 log
.info("Response message: %s", resp_message
)
129 self
._producer
.read_metric_data_response(
130 'read_metric_data_response', resp_message
)
131 except Exception as exc
:
132 log
.warning("Failed to send read metric response:%s", exc
)
134 elif message
.key
== "delete_metric_request":
135 # delete the specified metric in the request
136 metric_id
= self
.get_metric_id(endpoint
, auth_token
, METRIC_MAPPINGS
[values
['metric_name']],
137 values
['resource_uuid'])
138 status
= self
.delete_metric(
139 endpoint
, auth_token
, metric_id
)
141 # Generate and send a response message
143 resp_message
= self
._response
.generate_response(
144 'delete_metric_response', m_id
=metric_id
,
145 m_name
=values
['metric_name'],
146 status
=status
, r_id
=values
['resource_uuid'],
147 cor_id
=values
['correlation_id'])
148 log
.info("Response message: %s", resp_message
)
149 self
._producer
.delete_metric_response(
150 'delete_metric_response', resp_message
)
151 except Exception as exc
:
152 log
.warning("Failed to send delete response:%s", exc
)
154 elif message
.key
== "update_metric_request":
155 # Gnocchi doesn't support configuration updates
156 # Log and send a response back to this effect
157 log
.warning("Gnocchi doesn't support metric configuration\
159 req_details
= values
['metric_create_request']
160 metric_name
= req_details
['metric_name']
161 resource_id
= req_details
['resource_uuid']
162 metric_id
= self
.get_metric_id(
163 endpoint
, auth_token
, metric_name
, resource_id
)
165 # Generate and send a response message
167 resp_message
= self
._response
.generate_response(
168 'update_metric_response', status
=False,
169 cor_id
=req_details
['correlation_id'],
170 r_id
=resource_id
, m_id
=metric_id
)
171 log
.info("Response message: %s", resp_message
)
172 self
._producer
.update_metric_response(
173 'update_metric_response', resp_message
)
174 except Exception as exc
:
175 log
.exception("Failed to send an update response:")
177 elif message
.key
== "list_metric_request":
178 list_details
= values
['metrics_list_request']
180 metric_list
= self
.list_metrics(
181 endpoint
, auth_token
, list_details
)
183 # Generate and send a response message
185 resp_message
= self
._response
.generate_response(
186 'list_metric_response', m_list
=metric_list
,
187 cor_id
=list_details
['correlation_id'])
188 log
.info("Response message: %s", resp_message
)
189 self
._producer
.list_metric_response(
190 'list_metric_response', resp_message
)
191 except Exception as exc
:
192 log
.warning("Failed to send a list response:%s", exc
)
195 log
.warning("Unknown key, no action will be performed.")
199 def configure_metric(self
, endpoint
, auth_token
, values
):
200 """Create the new metric in Gnocchi."""
202 resource_id
= values
['resource_uuid']
204 log
.warning("Resource is not defined correctly.")
205 return None, None, False
207 # Check/Normalize metric name
208 norm_name
, metric_name
= self
.get_metric_name(values
)
209 if metric_name
is None:
210 log
.warning("This metric is not supported by this plugin.")
211 return None, resource_id
, False
213 # Check for an existing metric for this resource
214 metric_id
= self
.get_metric_id(
215 endpoint
, auth_token
, metric_name
, resource_id
)
217 if metric_id
is None:
218 # Try appending metric to existing resource
220 base_url
= "{}/v1/resource/generic/%s/metric"
221 res_url
= base_url
.format(endpoint
) % resource_id
222 payload
= {metric_name
: {'archive_policy_name': 'high',
223 'unit': values
['metric_unit']}}
224 result
= Common
.perform_request(
225 res_url
, auth_token
, req_type
="post",
226 payload
=json
.dumps(payload
, sort_keys
=True))
227 # Get id of newly created metric
228 for row
in json
.loads(result
.text
):
229 if row
['name'] == metric_name
:
230 metric_id
= row
['id']
231 log
.info("Appended metric to existing resource.")
233 return metric_id
, resource_id
, True
234 except Exception as exc
:
235 # Gnocchi version of resource does not exist creating a new one
236 log
.info("Failed to append metric to existing resource:%s",
239 url
= "{}/v1/resource/generic".format(endpoint
)
240 metric
= {'name': metric_name
,
241 'archive_policy_name': 'high',
242 'unit': values
['metric_unit'], }
244 resource_payload
= json
.dumps({'id': resource_id
,
246 metric_name
: metric
}}, sort_keys
=True)
248 resource
= Common
.perform_request(
249 url
, auth_token
, req_type
="post",
250 payload
=resource_payload
)
252 # Return the newly created resource_id for creating alarms
253 new_resource_id
= json
.loads(resource
.text
)['id']
254 log
.info("Created new resource for metric: %s",
257 metric_id
= self
.get_metric_id(
258 endpoint
, auth_token
, metric_name
, new_resource_id
)
260 return metric_id
, new_resource_id
, True
261 except Exception as exc
:
262 log
.warning("Failed to create a new resource:%s", exc
)
263 return None, None, False
266 log
.info("This metric already exists for this resource.")
268 return metric_id
, resource_id
, False
270 def delete_metric(self
, endpoint
, auth_token
, metric_id
):
272 url
= "{}/v1/metric/%s".format(endpoint
) % metric_id
275 result
= Common
.perform_request(
276 url
, auth_token
, req_type
="delete")
277 if str(result
.status_code
) == "404":
278 log
.warning("Failed to delete the metric.")
282 except Exception as exc
:
283 log
.warning("Failed to carry out delete metric request:%s", exc
)
286 def list_metrics(self
, endpoint
, auth_token
, values
):
287 """List all metrics."""
289 # Check for a specified list
291 # Check if the metric_name was specified for the list
292 metric_name
= values
['metric_name'].lower()
293 if metric_name
not in METRIC_MAPPINGS
.keys():
294 log
.warning("This metric is not supported, won't be listed.")
296 except KeyError as exc
:
297 log
.info("Metric name is not specified: %s", exc
)
301 resource
= values
['resource_uuid']
302 except KeyError as exc
:
303 log
.info("Resource is not specified:%s", exc
)
307 url
= "{}/v1/metric?sort=name:asc".format(endpoint
)
308 result
= Common
.perform_request(
309 url
, auth_token
, req_type
="get")
311 metrics_partial
= json
.loads(result
.text
)
312 for metric
in metrics_partial
:
313 metrics
.append(metric
)
315 while len(json
.loads(result
.text
)) > 0:
316 last_metric_id
= metrics_partial
[-1]['id']
317 url
= "{}/v1/metric?sort=name:asc&marker={}".format(endpoint
, last_metric_id
)
318 result
= Common
.perform_request(
319 url
, auth_token
, req_type
="get")
320 if len(json
.loads(result
.text
)) > 0:
321 metrics_partial
= json
.loads(result
.text
)
322 for metric
in metrics_partial
:
323 metrics
.append(metric
)
325 if metrics
is not None:
326 # Format the list response
327 if metric_name
is not None and resource
is not None:
328 metric_list
= self
.response_list(
329 metrics
, metric_name
=metric_name
, resource
=resource
)
330 log
.info("Returning an %s resource list for %s metrics",
331 metric_name
, resource
)
332 elif metric_name
is not None:
333 metric_list
= self
.response_list(
334 metrics
, metric_name
=metric_name
)
335 log
.info("Returning a list of %s metrics", metric_name
)
336 elif resource
is not None:
337 metric_list
= self
.response_list(
338 metrics
, resource
=resource
)
339 log
.info("Return a list of %s resource metrics", resource
)
341 metric_list
= self
.response_list(metrics
)
342 log
.info("Returning a complete list of metrics")
346 log
.info("There are no metrics available")
348 except Exception as exc
:
349 log
.warning("Failed to generate any metric list. %s", exc
)
352 def get_metric_id(self
, endpoint
, auth_token
, metric_name
, resource_id
):
353 """Check if the desired metric already exists for the resource."""
354 url
= "{}/v1/resource/generic/%s".format(endpoint
) % resource_id
356 # Try return the metric id if it exists
357 result
= Common
.perform_request(
358 url
, auth_token
, req_type
="get")
359 return json
.loads(result
.text
)['metrics'][metric_name
]
361 log
.info("Metric doesn't exist. No metric_id available")
364 def get_metric_name(self
, values
):
365 """Check metric name configuration and normalize."""
368 # Normalize metric name
369 metric_name
= values
['metric_name'].lower()
370 return metric_name
, METRIC_MAPPINGS
[metric_name
]
372 log
.info("Metric name %s is invalid.", metric_name
)
373 return metric_name
, None
375 def read_metric_data(self
, endpoint
, auth_token
, values
):
376 """Collect metric measures over a specified time period."""
381 metric_id
= self
.get_metric_id(endpoint
, auth_token
, METRIC_MAPPINGS
[values
['metric_name']],
382 values
['resource_uuid'])
383 # Try and collect measures
384 collection_unit
= values
['collection_unit'].upper()
385 collection_period
= values
['collection_period']
387 # Define the start and end time based on configurations
388 # FIXME: Local timezone may differ from timezone set in Gnocchi, causing discrepancies in measures
389 stop_time
= time
.strftime("%Y-%m-%d") + "T" + time
.strftime("%X")
390 end_time
= int(round(time
.time() * 1000))
391 if collection_unit
== 'YEAR':
392 diff
= PERIOD_MS
[collection_unit
]
394 diff
= collection_period
* PERIOD_MS
[collection_unit
]
395 s_time
= (end_time
- diff
) / 1000.0
396 start_time
= datetime
.datetime
.fromtimestamp(s_time
).strftime(
397 '%Y-%m-%dT%H:%M:%S.%f')
398 base_url
= "{}/v1/metric/%(0)s/measures?start=%(1)s&stop=%(2)s"
399 url
= base_url
.format(endpoint
) % {
400 "0": metric_id
, "1": start_time
, "2": stop_time
}
402 # Perform metric data request
403 metric_data
= Common
.perform_request(
404 url
, auth_token
, req_type
="get")
406 # Generate a list of the requested timestamps and data
407 for r
in json
.loads(metric_data
.text
):
408 timestamp
= r
[0].replace("T", " ")
409 timestamps
.append(timestamp
)
412 return timestamps
, data
413 except Exception as exc
:
414 log
.warning("Failed to gather specified measures: %s", exc
)
415 return timestamps
, data
417 def response_list(self
, metric_list
, metric_name
=None, resource
=None):
418 """Create the appropriate lists for a list response."""
419 resp_list
, name_list
, res_list
= [], [], []
421 # Create required lists
422 for row
in metric_list
:
423 # Only list OSM metrics
425 if row
['name'] in METRIC_MAPPINGS
.values():
426 for k
, v
in six
.iteritems(METRIC_MAPPINGS
):
429 metric
= {"metric_name": name
,
430 "metric_uuid": row
['id'],
431 "metric_unit": row
['unit'],
432 "resource_uuid": row
['resource_id']}
433 resp_list
.append(metric
)
434 # Generate metric_name specific list
435 if metric_name
is not None and name
is not None:
436 if metric_name
in METRIC_MAPPINGS
.keys() and row
['name'] == METRIC_MAPPINGS
[metric_name
]:
437 metric
= {"metric_name": metric_name
,
438 "metric_uuid": row
['id'],
439 "metric_unit": row
['unit'],
440 "resource_uuid": row
['resource_id']}
441 name_list
.append(metric
)
442 # Generate resource specific list
443 if resource
is not None and name
is not None:
444 if row
['resource_id'] == resource
:
445 metric
= {"metric_name": name
,
446 "metric_uuid": row
['id'],
447 "metric_unit": row
['unit'],
448 "resource_uuid": row
['resource_id']}
449 res_list
.append(metric
)
451 # Join required lists
452 if metric_name
is not None and resource
is not None:
453 # Return intersection of res_list and name_list
454 return [i
for i
in res_list
for j
in name_list
if i
['metric_uuid'] == j
['metric_uuid']]
455 elif metric_name
is not None:
457 elif resource
is not None: