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# 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.
from oslo_config import cfg
from oslo_log import log as logging
from osprofiler import initializer
from osprofiler import profiler
from ironic.common import context
CONF = cfg.CONF
LOG = logging.getLogger(__name__)
def setup(name, host='0.0.0.0'):
"""Setup OSprofiler notifier and enable profiling.
:param name: name of the service that will be profiled
:param host: hostname or host IP address that the service will be
running on. By default host will be set to 0.0.0.0, but
specifying host name / address usage is highly recommended.
:raises TypeError: in case of invalid connection string for
a notifier backend, which is set in
osprofiler.initializer.init_from_conf.
"""
if not CONF.profiler.enabled:
return
admin_context = context.get_admin_context()
initializer.init_from_conf(conf=CONF,
context=admin_context.to_dict(),
project="ironic",
service=name,
host=host)
LOG.info("OSProfiler is enabled. Trace is generated using "
"[profiler]/hmac_keys specified in ironic.conf. "
"To disable, set [profiler]/enabled=false")
def trace_cls(name, **kwargs):
"""Wrap the OSProfiler trace_cls decorator
Wrap the OSProfiler trace_cls decorator so that it will not try to
patch the class unless OSProfiler is present and enabled in the config
:param name: The name of action. For example, wsgi, rpc, db, etc..
:param kwargs: Any other keyword args used by profiler.trace_cls
"""
def decorator(cls):
if CONF.profiler.enabled:
trace_decorator = profiler.trace_cls(name, kwargs)
return trace_decorator(cls)
return cls
return decorator
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