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80 lines
2.0 KiB
Python
80 lines
2.0 KiB
Python
from __future__ import print_function
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import pytest
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import re
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import requests
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import time
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node = cluster.add_instance('node', main_configs=['configs/prom_conf.xml'])
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@pytest.fixture(scope="module")
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def start_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def parse_response_line(line):
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allowed_prefixes = [
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"ClickHouse",
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"# HELP",
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"# TYPE",
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]
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assert any(line.startswith(prefix) for prefix in allowed_prefixes)
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if line.startswith("#"):
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return {}
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match = re.match('^([a-zA-Z_:][a-zA-Z0-9_:]+)(\{.*\})? (\d)', line)
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assert match, line
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name, _, val = match.groups()
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return {name: int(val)}
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def get_and_check_metrics(retries):
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while True:
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try:
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response = requests.get("http://{host}:{port}/metrics".format(
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host=node.ip_address, port=8001), allow_redirects=False)
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if response.status_code != 200:
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response.raise_for_status()
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break
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except:
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if retries >= 0:
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retries -= 1
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time.sleep(0.5)
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continue
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else:
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raise
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assert response.headers['content-type'].startswith('text/plain')
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results = {}
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for resp_line in response.text.split('\n'):
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resp_line = resp_line.rstrip()
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if not resp_line:
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continue
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res = parse_response_line(resp_line)
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results.update(res)
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return results
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def test_prometheus_endpoint(start_cluster):
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metrics_dict = get_and_check_metrics(10)
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assert metrics_dict['ClickHouseProfileEvents_Query'] >= 0
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prev_query_count = metrics_dict['ClickHouseProfileEvents_Query']
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node.query("SELECT 1")
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node.query("SELECT 2")
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node.query("SELECT 3")
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metrics_dict = get_and_check_metrics(10)
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assert metrics_dict['ClickHouseProfileEvents_Query'] >= prev_query_count + 3
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