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Simple library I used for querying Prometheus API and storing the results in Polars dataframes
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import os | |
from datetime import datetime, timedelta | |
from requests import get | |
from typing import Tuple | |
# https://prometheus.io/docs/prometheus/latest/querying/api/ | |
class Prometheus: | |
""" | |
Class for querying Prometheus | |
""" | |
def __init__( | |
self, | |
url: str = os.getenv("PROMETHEUS_URL"), | |
auth: Tuple = (os.getenv("PROMETHEUS_USER"), os.getenv("PROMETHEUS_PASS")), | |
) -> None: | |
self.url = url | |
self.auth = auth | |
def labels( | |
self, | |
start: datetime = datetime.now() - timedelta(days=1), | |
end: datetime = datetime.now(), | |
) -> list: | |
""" | |
List all labels | |
""" | |
params = ( | |
{} | |
if start == "" or end == "" | |
else { | |
"start": start.astimezone().isoformat(), | |
"end": end.astimezone().isoformat(), | |
} | |
) | |
res = get(url=self.url + "/api/v1/labels", auth=self.auth, params=params) | |
if res.status_code != 200 or res.json()["status"] != "success": | |
raise Exception("Well, fuck...") | |
return res.json()["data"] | |
def values( | |
self, | |
label: str, | |
start: datetime = datetime.now() - timedelta(days=1), | |
end: datetime = datetime.now(), | |
) -> list: | |
""" | |
List all values of given label | |
""" | |
params = ( | |
{} | |
if start == "" or end == "" | |
else { | |
"start": start.astimezone().isoformat(), | |
"end": end.astimezone().isoformat(), | |
} | |
) | |
res = get( | |
url=self.url + "/api/v1/label/" + label + "/values", | |
auth=self.auth, | |
params=params, | |
) | |
if res.status_code != 200 or res.json()["status"] != "success": | |
raise Exception("Well, fuck...") | |
return res.json()["data"] | |
def query(self, expression: str = '{job=~".+"}', time: datetime = datetime.now()) -> Tuple[str, list]: | |
""" | |
An instant query expression | |
""" | |
res = get( | |
url=self.url + "/api/v1/query", | |
auth=self.auth, | |
params={ | |
"query": expression, | |
"time": time.astimezone().isoformat(), | |
}, | |
) | |
if res.status_code != 200 or res.json()["status"] != "success": | |
# print(res.text) | |
raise Exception("Well, fuck...") | |
return res.json()["data"]["resultType"], res.json()["data"]["result"] | |
def queryRange( | |
self, | |
expression: str = '{job=~".+"}', | |
start: datetime = datetime.now() - timedelta(days=1), | |
end: datetime = datetime.now(), | |
) -> Tuple[str, list]: | |
""" | |
A range query expression | |
""" | |
res = get( | |
url=self.url + "/api/v1/query_range", | |
auth=self.auth, | |
params={ | |
"query": expression, | |
"start": start.astimezone().isoformat(), | |
"end": end.astimezone().isoformat(), | |
"step": int((end - start).total_seconds()) // 10000, # this is hardcoded limit | |
}, | |
) | |
if res.status_code != 200 or res.json()["status"] != "success": | |
print(res.text) | |
raise Exception("Well, fuck...") | |
return res.json()["data"]["resultType"], res.json()["data"]["result"] | |
def queryName(self, name: str) -> Tuple[str, list]: | |
""" | |
Instant, return raw metrics from type "vector", based on provided __name__ label | |
""" | |
res = self.query(expression='{__name__="%s"}' % name) | |
if res[0] != "vector": | |
raise Exception("Well, fuck...") | |
return res[1] | |
def queryRangeName( | |
self, | |
name: str, | |
start: datetime = datetime.now() - timedelta(days=1), | |
end: datetime = datetime.now(), | |
) -> list: | |
""" | |
Range, return raw metrics from type "matrix", based on provided __name__ label | |
""" | |
res = self.queryRange( | |
expression='{__name__="%s"}' % name, | |
start=start.astimezone().isoformat(), | |
end=end.astimezone().isoformat(), | |
) | |
if res[0] != "matrix": | |
raise Exception("Well, fuck...") | |
return res[1] |
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