import threading
import unittest
from prometheus_client import CollectorRegistry, Gauge
from prometheus_client.bridge.graphite import GraphiteBridge
try:
import SocketServer
except ImportError:
import socketserver as SocketServer
def fake_timer():
return 1434898897.5
class TestGraphiteBridge(unittest.TestCase):
def setUp(self):
self.registry = CollectorRegistry()
self.data = ''
class TCPHandler(SocketServer.BaseRequestHandler):
def handle(s):
self.data = s.request.recv(1024)
server = SocketServer.TCPServer(('', 0), TCPHandler)
class ServingThread(threading.Thread):
def run(self):
server.handle_request()
server.socket.close()
self.t = ServingThread()
self.t.start()
# Explicitly use localhost as the target host, since connecting to 0.0.0.0 fails on Windows
address = ('localhost', server.server_address[1])
self.gb = GraphiteBridge(address, self.registry, _timer=fake_timer)
def test_nolabels(self):
gauge = Gauge('g', 'help', registry=self.registry)
gauge.inc()
self.gb.push()
self.t.join()
self.assertEqual(b'g 1.0 1434898897\n', self.data)
def test_labels(self):
labels = Gauge('labels', 'help', ['a', 'b'], registry=self.registry)
labels.labels('c', 'd').inc()
self.gb.push()
self.t.join()
self.assertEqual(b'labels.a.c.b.d 1.0 1434898897\n', self.data)
def test_prefix(self):
labels = Gauge('labels', 'help', ['a', 'b'], registry=self.registry)
labels.labels('c', 'd').inc()
self.gb.push(prefix='pre.fix')
self.t.join()
self.assertEqual(b'pre.fix.labels.a.c.b.d 1.0 1434898897\n', self.data)
def test_sanitizing(self):
labels = Gauge('labels', 'help', ['a'], registry=self.registry)
labels.labels('c.:8').inc()
self.gb.push()
self.t.join()
self.assertEqual(b'labels.a.c__8 1.0 1434898897\n', self.data)
