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start_http_server for any given registry or the default registry #143

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start_http_server for any given registry or the default registry #143

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2 changes: 1 addition & 1 deletion prometheus_client/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@

CONTENT_TYPE_LATEST = exposition.CONTENT_TYPE_LATEST
generate_latest = exposition.generate_latest
MetricsHandler = exposition.MetricsHandler
MetricsHandler = exposition.generate_metrics_handler(REGISTRY)
make_wsgi_app = exposition.make_wsgi_app
start_http_server = exposition.start_http_server
start_wsgi_server = exposition.start_wsgi_server
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45 changes: 22 additions & 23 deletions prometheus_client/exposition.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,34 +75,33 @@ def generate_latest(registry=core.REGISTRY):
output.append('{0}{1} {2}\n'.format(name, labelstr, core._floatToGoString(value)))
return ''.join(output).encode('utf-8')


class MetricsHandler(BaseHTTPRequestHandler):
def do_GET(self):
registry = core.REGISTRY
params = parse_qs(urlparse(self.path).query)
if 'name[]' in params:
registry = registry.restricted_registry(params['name[]'])
try:
output = generate_latest(registry)
except:
self.send_error(500, 'error generating metric output')
raise
self.send_response(200)
self.send_header('Content-Type', CONTENT_TYPE_LATEST)
self.end_headers()
self.wfile.write(output)

def log_message(self, format, *args):
return


def start_http_server(port, addr=''):
def generate_metrics_handler(registry):
class MetricsHandler(BaseHTTPRequestHandler):
def do_GET(self):
params = parse_qs(urlparse(self.path).query)
if 'name[]' in params:
registry = registry.restricted_registry(params['name[]'])
try:
output = generate_latest(registry)
except:
self.send_error(500, 'error generating metric output')
raise
self.send_response(200)
self.send_header('Content-Type', CONTENT_TYPE_LATEST)
self.end_headers()
self.wfile.write(output)

def log_message(self, format, *args):
return


def start_http_server(port, addr='', registry=core.REGISTRY):
"""Starts an HTTP server for prometheus metrics as a daemon thread"""
class ThreadingSimpleServer(ThreadingMixIn, HTTPServer):
pass
class PrometheusMetricsServer(threading.Thread):
def run(self):
httpd = ThreadingSimpleServer((addr, port), MetricsHandler)
httpd = ThreadingSimpleServer((addr, port), generate_metrics_handler(registry))
httpd.serve_forever()
t = PrometheusMetricsServer()
t.daemon = True
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