| # Copyright 2017 Intel Research and Development Ireland Limited |
| # ************************************************************* |
| |
| # This file is part of OSM Monitoring module |
| # All Rights Reserved to Intel Corporation |
| |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may |
| # not use this file except in compliance with the License. You may obtain |
| # a copy of the License at |
| |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations |
| # under the License. |
| |
| # For those usages not covered by the Apache License, Version 2.0 please |
| # contact: helena.mcgough@intel.com or adrian.hoban@intel.com |
| ## |
| """Carry out OpenStack metric requests via Gnocchi API.""" |
| |
| import datetime |
| import json |
| import logging as log |
| import time |
| |
| from core.message_bus.producer import KafkaProducer |
| |
| from kafka import KafkaConsumer |
| |
| from plugins.OpenStack.common import Common |
| from plugins.OpenStack.response import OpenStack_Response |
| |
| __author__ = "Helena McGough" |
| |
| METRIC_MAPPINGS = { |
| "average_memory_utilization": "memory.percent", |
| "disk_read_ops": "disk.disk_ops", |
| "disk_write_ops": "disk.disk_ops", |
| "disk_read_bytes": "disk.disk_octets", |
| "disk_write_bytes": "disk.disk_octets", |
| "packets_dropped": "interface.if_dropped", |
| "packets_received": "interface.if_packets", |
| "packets_sent": "interface.if_packets", |
| "cpu_utilization": "cpu.percent", |
| } |
| |
| PERIOD_MS = { |
| "HR": 3600000, |
| "DAY": 86400000, |
| "WEEK": 604800000, |
| "MONTH": 2629746000, |
| "YEAR": 31556952000 |
| } |
| |
| |
| class Metrics(object): |
| """OpenStack metric requests performed via the Gnocchi API.""" |
| |
| def __init__(self): |
| """Initialize the metric actions.""" |
| self._common = Common() |
| |
| # TODO(mcgoughh): Initialize a generic consumer object to consume |
| # message from the SO. This is hardcoded for now |
| server = {'server': 'localhost:9092', 'topic': 'metric_request'} |
| self._consumer = KafkaConsumer(server['topic'], |
| group_id='osm_mon', |
| bootstrap_servers=server['server']) |
| |
| # Use the Response class to generate valid json response messages |
| self._response = OpenStack_Response() |
| |
| # Initializer a producer to send responses back to SO |
| self._producer = KafkaProducer("metric_response") |
| |
| def metric_calls(self): |
| """Consume info from the message bus to manage metric requests.""" |
| # Consumer check for metric messages |
| for message in self._consumer: |
| # Check if this plugin should carry out this request |
| values = json.loads(message.value) |
| vim_type = values['vim_type'].lower() |
| |
| if vim_type == "openstack": |
| # Generate auth_token and endpoint |
| auth_token, endpoint = self.authenticate() |
| |
| if message.key == "create_metric_request": |
| # Configure metric |
| metric_details = values['metric_create'] |
| metric_id, resource_id, status = self.configure_metric( |
| endpoint, auth_token, metric_details) |
| |
| # Generate and send a create metric response |
| try: |
| resp_message = self._response.generate_response( |
| 'create_metric_response', status=status, |
| cor_id=values['correlation_id'], |
| metric_id=metric_id, r_id=resource_id) |
| self._producer.create_metrics_resp( |
| 'create_metric_response', resp_message, |
| 'metric_response') |
| except Exception as exc: |
| log.warn("Failed to create response: %s", exc) |
| |
| elif message.key == "read_metric_data_request": |
| # Read all metric data related to a specified metric |
| timestamps, metric_data = self.read_metric_data( |
| endpoint, auth_token, values) |
| |
| # Generate and send a response message |
| try: |
| resp_message = self._response.generate_response( |
| 'read_metric_data_response', |
| m_id=values['metric_uuid'], |
| m_name=values['metric_name'], |
| r_id=values['resource_uuid'], |
| cor_id=values['correlation_id'], |
| times=timestamps, metrics=metric_data) |
| self._producer.read_metric_data_response( |
| 'read_metric_data_response', resp_message, |
| 'metric_response') |
| except Exception as exc: |
| log.warn("Failed to send read metric response:%s", exc) |
| |
| elif message.key == "delete_metric_request": |
| # delete the specified metric in the request |
| metric_id = values['metric_uuid'] |
| status = self.delete_metric( |
| endpoint, auth_token, metric_id) |
| |
| # Generate and send a response message |
| try: |
| resp_message = self._response.generate_response( |
| 'delete_metric_response', m_id=metric_id, |
| m_name=values['metric_name'], |
| status=status, r_id=values['resource_uuid'], |
| cor_id=values['correlation_id']) |
| self._producer.delete_metric_response( |
| 'delete_metric_response', resp_message, |
| 'metric_response') |
| except Exception as exc: |
| log.warn("Failed to send delete response:%s", exc) |
| |
| elif message.key == "update_metric_request": |
| # Gnocchi doesn't support configuration updates |
| # Log and send a response back to this effect |
| log.warn("Gnocchi doesn't support metric configuration\ |
| updates.") |
| req_details = values['metric_create'] |
| metric_name = req_details['metric_name'] |
| resource_id = req_details['resource_uuid'] |
| metric_id = self.get_metric_id( |
| endpoint, auth_token, metric_name, resource_id) |
| |
| # Generate and send a response message |
| try: |
| resp_message = self._response.generate_response( |
| 'update_metric_response', status=False, |
| cor_id=values['correlation_id'], |
| r_id=resource_id, m_id=metric_id) |
| self._producer.update_metric_response( |
| 'update_metric_response', resp_message, |
| 'metric_response') |
| except Exception as exc: |
| log.warn("Failed to send an update response:%s", exc) |
| |
| elif message.key == "list_metric_request": |
| list_details = values['metrics_list_request'] |
| |
| metric_list = self.list_metrics( |
| endpoint, auth_token, list_details) |
| |
| # Generate and send a response message |
| try: |
| resp_message = self._response.generate_response( |
| 'list_metric_response', m_list=metric_list, |
| cor_id=list_details['correlation_id']) |
| self._producer.list_metric_response( |
| 'list_metric_response', resp_message, |
| 'metric_response') |
| except Exception as exc: |
| log.warn("Failed to send a list response:%s", exc) |
| |
| else: |
| log.warn("Unknown key, no action will be performed.") |
| else: |
| log.debug("Message is not for this OpenStack.") |
| |
| return |
| |
| def configure_metric(self, endpoint, auth_token, values): |
| """Create the new metric in Gnocchi.""" |
| try: |
| resource_id = values['resource_uuid'] |
| except KeyError: |
| log.warn("Resource is not defined correctly.") |
| return None, None, False |
| |
| # Check/Normalize metric name |
| metric_name, norm_name = self.get_metric_name(values) |
| if norm_name is None: |
| log.warn("This metric is not supported by this plugin.") |
| return None, resource_id, False |
| |
| # Check for an existing metric for this resource |
| metric_id = self.get_metric_id( |
| endpoint, auth_token, metric_name, resource_id) |
| |
| if metric_id is None: |
| # Try appending metric to existing resource |
| try: |
| base_url = "{}/v1/resource/generic/%s/metric" |
| res_url = base_url.format(endpoint) % resource_id |
| payload = {metric_name: {'archive_policy_name': 'high', |
| 'unit': values['metric_unit']}} |
| result = self._common._perform_request( |
| res_url, auth_token, req_type="post", |
| payload=json.dumps(payload)) |
| # Get id of newly created metric |
| for row in json.loads(result.text): |
| if row['name'] == metric_name: |
| metric_id = row['id'] |
| log.info("Appended metric to existing resource.") |
| |
| return metric_id, resource_id, True |
| except Exception as exc: |
| # Gnocchi version of resource does not exist creating a new one |
| log.info("Failed to append metric to existing resource:%s", |
| exc) |
| try: |
| url = "{}/v1/resource/generic".format(endpoint) |
| metric = {'name': metric_name, |
| 'archive_policy_name': 'high', |
| 'unit': values['metric_unit'], } |
| |
| resource_payload = json.dumps({'id': resource_id, |
| 'metrics': { |
| metric_name: metric}}) |
| |
| resource = self._common._perform_request( |
| url, auth_token, req_type="post", |
| payload=resource_payload) |
| |
| # Return the newly created resource_id for creating alarms |
| new_resource_id = json.loads(resource.text)['id'] |
| log.info("Created new resource for metric: %s", |
| new_resource_id) |
| |
| metric_id = self.get_metric_id( |
| endpoint, auth_token, metric_name, new_resource_id) |
| |
| return metric_id, new_resource_id, True |
| except Exception as exc: |
| log.warn("Failed to create a new resource:%s", exc) |
| return None, None, False |
| |
| else: |
| log.info("This metric already exists for this resource.") |
| |
| return metric_id, resource_id, False |
| |
| def delete_metric(self, endpoint, auth_token, metric_id): |
| """Delete metric.""" |
| url = "{}/v1/metric/%s".format(endpoint) % (metric_id) |
| |
| try: |
| result = self._common._perform_request( |
| url, auth_token, req_type="delete") |
| if str(result.status_code) == "404": |
| log.warn("Failed to delete the metric.") |
| return False |
| else: |
| return True |
| except Exception as exc: |
| log.warn("Failed to carry out delete metric request:%s", exc) |
| return False |
| |
| def list_metrics(self, endpoint, auth_token, values): |
| """List all metrics.""" |
| url = "{}/v1/metric/".format(endpoint) |
| |
| try: |
| # Check if the metric_name was specified for the list |
| metric_name = values['metric_name'] |
| result = self._common._perform_request( |
| url, auth_token, req_type="get") |
| metric_list = json.loads(result.text) |
| |
| # Format the list response |
| metrics = self.response_list( |
| metric_list, metric_name=metric_name) |
| return metrics |
| except KeyError: |
| log.debug("Metric name is not specified for this list.") |
| |
| try: |
| # Check if a resource_id was specified |
| resource_id = values['resource_uuid'] |
| result = self._common._perform_request( |
| url, auth_token, req_type="get") |
| metric_list = json.loads(result.text) |
| # Format the list response |
| metrics = self.response_list( |
| metric_list, resource=resource_id) |
| return metrics |
| except KeyError: |
| log.debug("Resource id not specificed either, will return a\ |
| complete list.") |
| try: |
| result = self._common._perform_request( |
| url, auth_token, req_type="get") |
| metric_list = json.loads(result.text) |
| # Format the list response |
| metrics = self.response_list(metric_list) |
| return metrics |
| |
| except Exception as exc: |
| log.warn("Failed to generate any metric list. %s", exc) |
| return None |
| |
| def get_metric_id(self, endpoint, auth_token, metric_name, resource_id): |
| """Check if the desired metric already exists for the resource.""" |
| url = "{}/v1/resource/generic/%s".format(endpoint) % resource_id |
| |
| try: |
| # Try return the metric id if it exists |
| result = self._common._perform_request( |
| url, auth_token, req_type="get") |
| return json.loads(result.text)['metrics'][metric_name] |
| except Exception: |
| log.info("Metric doesn't exist. No metric_id available") |
| return None |
| |
| def get_metric_name(self, values): |
| """Check metric name configuration and normalize.""" |
| try: |
| # Normalize metric name |
| metric_name = values['metric_name'].lower() |
| return metric_name, METRIC_MAPPINGS[metric_name] |
| except KeyError: |
| log.info("Metric name %s is invalid.", metric_name) |
| return metric_name, None |
| |
| def read_metric_data(self, endpoint, auth_token, values): |
| """Collectd metric measures over a specified time period.""" |
| timestamps = [] |
| data = [] |
| try: |
| # Try and collect measures |
| metric_id = values['metric_uuid'] |
| collection_unit = values['collection_unit'].upper() |
| collection_period = values['collection_period'] |
| |
| # Define the start and end time based on configurations |
| stop_time = time.strftime("%Y-%m-%d") + "T" + time.strftime("%X") |
| end_time = int(round(time.time() * 1000)) |
| if collection_unit == 'YEAR': |
| diff = PERIOD_MS[collection_unit] |
| else: |
| diff = collection_period * PERIOD_MS[collection_unit] |
| s_time = (end_time - diff)/1000.0 |
| start_time = datetime.datetime.fromtimestamp(s_time).strftime( |
| '%Y-%m-%dT%H:%M:%S.%f') |
| base_url = "{}/v1/metric/%(0)s/measures?start=%(1)s&stop=%(2)s" |
| url = base_url.format(endpoint) % { |
| "0": metric_id, "1": start_time, "2": stop_time} |
| |
| # Perform metric data request |
| metric_data = self._common._perform_request( |
| url, auth_token, req_type="get") |
| |
| # Generate a list of the requested timestamps and data |
| for r in json.loads(metric_data.text): |
| timestamp = r[0].replace("T", " ") |
| timestamps.append(timestamp) |
| data.append(r[2]) |
| |
| return timestamps, data |
| except Exception as exc: |
| log.warn("Failed to gather specified measures: %s", exc) |
| return timestamps, data |
| |
| def authenticate(self): |
| """Generate an authentication token and endpoint for metric request.""" |
| try: |
| # Check for a tenant_id |
| auth_token = self._common._authenticate() |
| endpoint = self._common.get_endpoint("metric") |
| return auth_token, endpoint |
| except Exception as exc: |
| log.warn("Authentication to Keystone failed: %s", exc) |
| |
| return None, None |
| |
| def response_list(self, metric_list, metric_name=None, resource=None): |
| """Create the appropriate lists for a list response.""" |
| resp_list = [] |
| |
| for row in metric_list: |
| if metric_name is not None: |
| if row['name'] == metric_name: |
| metric = {"metric_name": row['name'], |
| "metric_uuid": row['id'], |
| "metric_unit": row['unit'], |
| "resource_uuid": row['resource_id']} |
| resp_list.append(metric) |
| elif resource is not None: |
| if row['resource_id'] == resource: |
| metric = {"metric_name": row['name'], |
| "metric_uuid": row['id'], |
| "metric_unit": row['unit'], |
| "resource_uuid": row['resource_id']} |
| resp_list.append(metric) |
| else: |
| metric = {"metric_name": row['name'], |
| "metric_uuid": row['id'], |
| "metric_unit": row['unit'], |
| "resource_uuid": row['resource_id']} |
| resp_list.append(metric) |
| return resp_list |