I am new user of Prometheus.
I get *V*alueError: Duplicated timeseries in CollectorRegistry and I tried
different ways but could not figure out out is the problem and how to solve
it.
My code looks like the following:
instrumentator.instrument(app)
instrumentator.expose(app, include_in_schema=False)
app.include_router(xxx)
app.include_router(xxx)
app.include_router(xxx)
async def validation_exception_handler(
request: Request, exc: RequestValidationError
) -> JSONResponse:
# some code
return await input_validation_exception_handler(request, exc)
@app.exception_handler(HTTPException)
async def custom_http_exception_handler(
request: Request, exc: HTTPException
) -> JSONResponse:
# some code
return await http_exception_handler(request, exc)
When I remove this exception handler everything is fine but if I add this
exception handler then it raises the following exception:
File "/app/app/main.py", line 113, in <module>
async def custom_http_exception_handler(
File "/usr/local/lib/python3.8/site-packages/starlette/applications.py", line
161, in decorator
self.add_exception_handler(exc_class_or_status_code, func)
File "/usr/local/lib/python3.8/site-packages/starlette/applications.py", line
135, in add_exception_handler
self.middleware_stack = self.build_middleware_stack()
File "/usr/local/lib/python3.8/site-packages/fastapi/applications.py", line
186, in build_middleware_stack
app = cls(app=app, **options)
File
"/usr/local/lib/python3.8/site-packages/prometheus_fastapi_instrumentator/middleware.py",
line 52, in __init__
self.instrumentations = instrumentations or [metrics.default()]
File
"/usr/local/lib/python3.8/site-packages/prometheus_fastapi_instrumentator/metrics.py",
line 544, in default
TOTAL = Counter(
File "/usr/local/lib/python3.8/site-packages/prometheus_client/metrics.py",
line 143, in __init__
registry.register(self)
File "/usr/local/lib/python3.8/site-packages/prometheus_client/registry.py",
line 43, in register
raise ValueError(
ValueError: Duplicated timeseries in CollectorRegistry:
{'http_requests_created', 'http_requests_total', 'http_requests'}
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