On Tue, 22 Sep 2020 at 11:06, Sebastian Halter <[email protected]>
wrote:
> Thats what i tried:
>
> *g = GaugeMetricFamily("cardTemperature", "Temperature of the installed
> card", labels=["card"])*
>
This should be inside the collector.
>
> *class TL1Collector(object):*
> * def __init__(self, endpoint):*
> * self._endpoint = endpoint*
>
> * def collect(self):*
> * g.add_metric(self._endpoint, 2)*
> * yield g*
>
> *@app.route("/temperature")*
> *def handle_get():*
> * if "target" in request.args:*
> * target = request.args.get('target')*
> * REGISTRY.register(TL1Collector(target))*
>
Create a registry per request, and register with that.
Brian
> * return generate_latest(REGISTRY)*
> * else:*
> * return "Error: No target field provided. Please specify target.*"
>
> I'm probably wrong the line "*REGISTRY.register(TL1Collector(target))"
> *because
> i register the collector every time i call the endpoint and it is already
> registered from the http call before that one.
> But i don't know where to register the custom collector to prevent that,
> because i need the target variable to be passed through.
> If i only trigger it once at the start with a boolean it works serveral
> times and i dont get that error anymore but in only adds another metric to
> the output an keeps the old data from a different target parameter aswell.
> [email protected] schrieb am Dienstag, 22. September 2020 um 11:31:43
> UTC+2:
>
>> You probably need to use the Custom Collector. This is similar to the
>> "Const" metrics in the Go code.
>>
>> https://github.com/prometheus/client_python#custom-collectors
>>
>> On Tue, Sep 22, 2020 at 11:03 AM Sebastian Halter <[email protected]>
>> wrote:
>>
>>> Hello everyone,
>>>
>>> i am trying to collect some data via TL1 (basically telnet) because the
>>> manufacturer doesn't provide the temperature of the installed cards via
>>> SNMP.
>>>
>>> I would like to recreate something like the SNMP-Exporter where i can
>>> specify my target in the URL it scrapes. Currently i am facing the issue,
>>> that my exporter runs once and then it runs into an error on every other
>>> request ("ValueError: Duplicated timeseriers in CollectorRegistry").
>>>
>>> Does anyone have a basic example of a multi-target python exporter?
>>> I found in the documentation that python, go und java are the only
>>> client libraries that supports this approch but couldn't find any example
>>> of this on the python-client github site.
>>>
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>>> .
>>>
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>
--
Brian Brazil
www.robustperception.io
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