# -*- coding: utf-8 -*-
"""只操作本程序创建的临时对象；全部数据为合成样本。"""
import os, sys, json, sqlite3, tempfile, pathlib, subprocess, time, socket, stat
from pathlib import Path
def emit(**kw):
    print(json.dumps(kw, ensure_ascii=False, sort_keys=True))

import shutil
PROMTOOL=os.environ.get('PROMTOOL') or shutil.which('promtool')
assert PROMTOOL, '请安装官方Prometheus 3.5.0并将promtool加入PATH或设置PROMTOOL绝对路径'
def prom_test(data, rules=None, expected_failure=False):
    with tempfile.TemporaryDirectory(prefix='ywebs-next132-b2-prom-') as d:
        p=Path(d)
        if rules is not None:
            (p/'rules.yml').write_text(json.dumps(rules),encoding='utf-8')
            data['rule_files']=['rules.yml']
        (p/'test.yml').write_text(json.dumps(data),encoding='utf-8')
        r=subprocess.run([PROMTOOL,'test','rules','test.yml'],cwd=d,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universal_newlines=True)
        if expected_failure: assert r.returncode!=0 and 'many-to-many' in r.stdout,r.stdout
        else: assert r.returncode==0,r.stdout
        return {'returncode':r.returncode,'output':r.stdout}
series=[{'series':'demo_gateway_requests_total{replica="A"}','values':'0 10 20 0 10 20'},{'series':'demo_gateway_requests_total{replica="B"}','values':'0 10 20 30 40 50'}]
checks=[{'expr':'sum(rate(demo_gateway_requests_total[5m]))','eval_time':'5m','exp_samples':[{'labels':'{}','value':0.29166666666666663}]},{'expr':'rate((sum(demo_gateway_requests_total))[5m:1m])','eval_time':'5m','exp_samples':[{'labels':'{}','value':11/30}]}]
r=prom_test({'evaluation_interval':'1m','tests':[{'interval':'1m','input_series':series,'promql_expr_test':checks}]})
emit(correct_rate=7/24,aggregate_first=11/30,engine=r)