Add observability check to counters #455
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Signed-off-by: AlexPadron <alexp@kensho.com>
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prometheus_client/metrics.py
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| # metric is observable will the value be initialized. | ||
| if not self._is_observable(): | ||
| raise ValueError( | ||
| '%s metric is not observable. This is likely because the metric requires ' |
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Thinking if we want to make this more detailed, for example we could use inspect and get the method name that is being invoked. Also, we may want to use this in other metrics as well. I added the check to counters, but the same issue exists in gauges as well for example
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I'm not sure "observable" is the right word to use here, it'll confuse users. Missing label values would be more accurate.
prometheus_client/metrics.py
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| # metric is observable will the value be initialized. | ||
| if not self._is_observable(): | ||
| raise ValueError( | ||
| '%s metric is not observable. This is likely because the metric requires ' |
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I'm not sure "observable" is the right word to use here, it'll confuse users. Missing label values would be more accurate.
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Signed-off-by: AlexPadron <alexp@kensho.com>
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Other metrics types also need this, e.g. the time() functions. |
Signed-off-by: AlexPadron <alexp@kensho.com>
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I think I got all of these (at least in metrics.py). As far as I can tell by grepping this is the only location where the metrics are defined |
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Thanks! |
This is for issue #454