a580772449
* Remove old observability client
* Add initial functionality for prometheus querying
* Fix a copy-paste error in get_client()
* Add additional functionality.
This commit adds:
- commands:
delete
clear-tombstones
snapshot
- Better rbac injection as well as a possibility
to disable rbac.
- Configuration of prometheus_client through
env variables and /etc/openstack/prometheus.yaml
* Make README up to date
* Implement Martin's PR comments
* Implement better support for label values in rbac
* PEP8
111 lines
3.2 KiB
Python
111 lines
3.2 KiB
Python
# Copyright 2023 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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import yaml
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from observabilityclient.prometheus_client import PrometheusAPIClient
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DEFAULT_CONFIG_LOCATIONS = [os.environ["HOME"] + "/.config/openstack/",
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"/etc/openstack/"]
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CONFIG_FILE_NAME = "prometheus.yaml"
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LOG = logging.getLogger(__name__)
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class ConfigurationError(Exception):
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pass
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def get_config_file():
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if os.path.exists(CONFIG_FILE_NAME):
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LOG.debug(f"Using {CONFIG_FILE_NAME} as prometheus configuration")
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return open(CONFIG_FILE_NAME, "r")
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for path in DEFAULT_CONFIG_LOCATIONS:
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full_filename = path + CONFIG_FILE_NAME
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if os.path.exists(full_filename):
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LOG.debug(f"Using {full_filename} as prometheus configuration")
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return open(full_filename, "r")
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return None
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def get_prometheus_client():
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host = None
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port = None
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conf_file = get_config_file()
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if conf_file is not None:
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conf = yaml.safe_load(conf_file)
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if 'host' in conf:
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host = conf['host']
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if 'port' in conf:
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port = conf['port']
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conf_file.close()
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# NOTE(jwysogla): We allow to overide the prometheus.yaml by
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# the environment variables
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if 'PROMETHEUS_HOST' in os.environ:
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host = os.environ['PROMETHEUS_HOST']
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if 'PROMETHEUS_PORT' in os.environ:
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port = os.environ['PROMETHEUS_PORT']
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if host is None or port is None:
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raise ConfigurationError("Can't find prometheus host and "
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"port configuration.")
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return PrometheusAPIClient(f"{host}:{port}")
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def get_client(obj):
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return obj.app.client_manager.observabilityclient
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def list2cols(cols, objs):
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return cols, [tuple([o[k] for k in cols])
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for o in objs]
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def format_labels(d: dict) -> str:
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def replace_doubled_quotes(string):
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if "''" in string:
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string = string.replace("''", "'")
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if '""' in string:
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string = string.replace('""', '"')
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return string
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ret = ""
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for key, value in d.items():
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ret += "{}='{}', ".format(key, value)
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ret = ret[0:-2]
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old = ""
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while ret != old:
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old = ret
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ret = replace_doubled_quotes(ret)
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return ret
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def metrics2cols(m):
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cols = []
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fields = []
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first = True
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for metric in m:
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row = []
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for key, value in metric.labels.items():
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if first:
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cols.append(key)
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row.append(value)
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if first:
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cols.append("value")
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row.append(metric.value)
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fields.append(row)
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first = False
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return cols, fields
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