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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,31 +1,87 @@ | ||
import inspect | ||
import time | ||
from functools import wraps | ||
from typing import Awaitable, Callable, ParamSpec, TypeVar | ||
|
||
from prometheus_client import Counter | ||
from prometheus_client import Counter, Histogram, Summary | ||
from prometheus_client.utils import INF | ||
|
||
P = ParamSpec("P") | ||
T = TypeVar("T") | ||
|
||
|
||
def increase_counter(metric_label: str, id_field_name: str = "developer_id"): | ||
id_field_name = "developer_id" | ||
labelnames = ("developer_id", "query_name") | ||
buckets = ( | ||
0.005, | ||
0.01, | ||
0.025, | ||
0.05, | ||
0.075, | ||
0.1, | ||
0.25, | ||
0.5, | ||
0.75, | ||
1.0, | ||
2.5, | ||
5.0, | ||
7.5, | ||
10.0, | ||
15.0, | ||
20.0, | ||
25.0, | ||
30.0, | ||
INF, | ||
) | ||
counter = Counter( | ||
f"db_query_counter", | ||
f"Number of db calls", | ||
labelnames=labelnames, | ||
) | ||
summary = Summary( | ||
f"db_query_latency_summary", | ||
"Database query latency summary", | ||
labelnames=labelnames, | ||
) | ||
hist = Histogram( | ||
f"db_query_latency_hist", | ||
"Database query latency histogram", | ||
labelnames=labelnames, | ||
buckets=buckets, | ||
) | ||
|
||
|
||
def query_metrics_update(metric_label: str): | ||
def decor(func: Callable[P, T | Awaitable[T]]): | ||
metric = Counter( | ||
metric_label, | ||
f"Number of {metric_label} calls", | ||
labelnames=(id_field_name,), | ||
) | ||
|
||
@wraps(func) | ||
def wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
metric.labels(kwargs.get(id_field_name, "not_set")).inc() | ||
return func(*args, **kwargs) | ||
|
||
@wraps(func) | ||
async def async_wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
metric.labels(kwargs.get(id_field_name, "not_set")).inc() | ||
return await func(*args, **kwargs) | ||
|
||
return async_wrapper if inspect.iscoroutinefunction(func) else wrapper | ||
if inspect.iscoroutinefunction(func): | ||
|
||
@wraps(func) | ||
async def async_wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
fld_id = kwargs.get(id_field_name, "not_set") | ||
labels_dict = {id_field_name: fld_id, "query_name": metric_label} | ||
counter.labels(**labels_dict).inc() | ||
start_time = time.time() | ||
result = await func(*args, **kwargs) | ||
end_time = time.time() - start_time | ||
summary.labels(**labels_dict).observe(end_time) | ||
hist.labels(**labels_dict).observe(end_time) | ||
return result | ||
|
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return async_wrapper | ||
else: | ||
|
||
@wraps(func) | ||
def wrapper(*args: P.args, **kwargs: P.kwargs) -> T: | ||
fld_id = kwargs.get(id_field_name, "not_set") | ||
labels_dict = {id_field_name: fld_id, "query_name": metric_label} | ||
counter.labels(**labels_dict).inc() | ||
start_time = time.time() | ||
result = func(*args, **kwargs) | ||
end_time = time.time() - start_time | ||
summary.labels(**labels_dict).observe(end_time) | ||
hist.labels(**labels_dict).observe(end_time) | ||
return result | ||
|
||
return wrapper | ||
|
||
return decor |
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