def _setup_metrics(self):
"""
Start metric exposition
"""
path = os.environ.get("prometheus_multiproc_dir")
if not os.path.exists(self.metrics_dir):
try:
log.info("Creating metrics directory")
os.makedirs(self.metrics_dir)
except OSError:
log.error("Failed to create metrics directory!")
raise ConfigurationException(
"Failed to create metrics directory!")
path = self.metrics_dir
elif path != self.metrics_dir:
path = self.metrics_dir
os.environ['prometheus_multiproc_dir'] = path
log.info("Cleaning metrics collection directory")
log.debug("Metrics directory set to: {}".format(path))
files = os.listdir(path)
for f in files:
if f.endswith(".db"):
os.remove(os.path.join(path, f))
log.debug("Starting metrics exposition")
if self.metrics_enabled:
registry = CollectorRegistry()
multiprocess.MultiProcessCollector(registry)
start_http_server(port=self.metrics_port,
addr=self.metrics_address,
registry=registry)
def _raise_config_exception(error_string):
log.error(error_string, exc_info=True)
raise ConfigurationException(error_string)