0e01f0735c
Since we've dropped support for Python 2.7, it's time to look at the bright future that Python 3.x will bring and stop forcing compatibility with older versions. This patch removes the six library from requirements, not looking back. Change-Id: I4bf885bc7d1ccdf46dde3e0b10a8dbec304aaf9b
100 lines
3.6 KiB
Python
100 lines
3.6 KiB
Python
# Copyright 2016 Rackspace Hosting
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# All Rights Reserved.
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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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from oslo_config import cfg
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from ironic_lib.common.i18n import _
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from ironic_lib import exception
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from ironic_lib import metrics
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from ironic_lib import metrics_statsd
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metrics_opts = [
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cfg.StrOpt('backend',
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default='noop',
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choices=['noop', 'statsd'],
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help='Backend to use for the metrics system.'),
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cfg.BoolOpt('prepend_host',
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default=False,
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help='Prepend the hostname to all metric names. '
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'The format of metric names is '
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'[global_prefix.][host_name.]prefix.metric_name.'),
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cfg.BoolOpt('prepend_host_reverse',
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default=True,
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help='Split the prepended host value by "." and reverse it '
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'(to better match the reverse hierarchical form of '
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'domain names).'),
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cfg.StrOpt('global_prefix',
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help='Prefix all metric names with this value. '
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'By default, there is no global prefix. '
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'The format of metric names is '
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'[global_prefix.][host_name.]prefix.metric_name.')
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]
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CONF = cfg.CONF
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CONF.register_opts(metrics_opts, group='metrics')
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def get_metrics_logger(prefix='', backend=None, host=None, delimiter='.'):
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"""Return a metric logger with the specified prefix.
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The format of the prefix is:
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[global_prefix<delim>][host_name<delim>]prefix
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where <delim> is the delimiter (default is '.')
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:param prefix: Prefix for this metric logger.
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Value should be a string or None.
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:param backend: Backend to use for the metrics system.
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Possible values are 'noop' and 'statsd'.
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:param host: Name of this node.
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:param delimiter: Delimiter to use for the metrics name.
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:return: The new MetricLogger.
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"""
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if not isinstance(prefix, str):
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msg = (_("This metric prefix (%s) is of unsupported type. "
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"Value should be a string or None")
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% str(prefix))
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raise exception.InvalidMetricConfig(msg)
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if CONF.metrics.prepend_host and host:
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if CONF.metrics.prepend_host_reverse:
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host = '.'.join(reversed(host.split('.')))
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if prefix:
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prefix = delimiter.join([host, prefix])
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else:
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prefix = host
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if CONF.metrics.global_prefix:
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if prefix:
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prefix = delimiter.join([CONF.metrics.global_prefix, prefix])
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else:
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prefix = CONF.metrics.global_prefix
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backend = backend or CONF.metrics.backend
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if backend == 'statsd':
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return metrics_statsd.StatsdMetricLogger(prefix, delimiter=delimiter)
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elif backend == 'noop':
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return metrics.NoopMetricLogger(prefix, delimiter=delimiter)
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else:
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msg = (_("The backend is set to an unsupported type: "
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"%s. Value should be 'noop' or 'statsd'.")
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% backend)
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raise exception.InvalidMetricConfig(msg)
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def list_opts():
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"""Entry point for oslo-config-generator."""
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return [('metrics', metrics_opts)]
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