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58 lines
1.5 KiB
58 lines
1.5 KiB
7 months ago
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import urllib.parse
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import requests
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from django.conf import settings
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from websockets.sync.client import connect as ws_connect
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def get_loki_client():
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# TODO: 补充 auth 认证相关
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return LokiClient(base_url=settings.LOKI_BASE_URL)
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# https://grafana.com/docs/loki/latest/reference/loki-http-api/
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class LokiClient(object):
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query_range_url = '/loki/api/v1/query_range'
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tail_url = '/loki/api/v1/tail'
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def __init__(self, base_url: str):
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self.base_url = base_url.rstrip('/')
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def query_range(self, query, start, end, limit=100):
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params = {
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'query': query,
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'start': start,
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'end': end,
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'limit': limit,
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}
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url = f"{self.base_url}{self.query_range_url}"
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response = requests.get(url, params=params)
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if response.status_code != 200:
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raise Exception(response.text)
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return response.json()
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def create_tail_ws(self, query, limit=100):
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data = {'query': query, 'limit': limit}
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params = urllib.parse.urlencode(data)
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ws_url = f"ws://{self.base_url[7:]}"
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if self.base_url.startswith('https://'):
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ws_url = f"wss://{self.base_url[8:]}"
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url = f"{ws_url}{self.tail_url}?{params}"
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ws = ws_connect(url)
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return LokiTailWs(ws)
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class LokiTailWs(object):
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def __init__(self, ws):
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self._ws = ws
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def messages(self):
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for message in self._ws:
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yield message
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def close(self):
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if self._ws:
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self._ws.close()
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