Error 500 when pushing same metric with different label

[sanjioh]

Hi,

thanks for developing Gravel Gateway!

I have an issue in pushing the same metric with different label values. I'm not sure whether it's something I'm missing, but here's how to reproduce:

• clone master@06e50df0210797b47a7ca13ccf8fb0f4b8bc159e
• cargo run (rustc 1.57.0 (f1edd0429 2021-11-29))
• The following curl returns correctly with 200 OK

  echo '# HELP mymetric My Metric
  > # TYPE mymetric gauge
  > mymetric{clearmode="aggregate",label="value1",job="my_metric"} 1.0' | curl -v -H 'Authorization: x' --data-binary @- localhost:4278/metrics

• Multiple curl invocations as above yield the expected results (summed values for the metric).
• But the following curl returns with 500 with message Unhandled rejection: AggregationError(ParseError(InvalidMetric("Cannot add a sample with 3 labels into a family with 2")))* (see label="value2")

  echo '# HELP mymetric My Metric
  > # TYPE mymetric gauge
  > mymetric{clearmode="aggregate",label="value2",job="my_metric"} 1.0' | curl -v -H 'Authorization: x' --data-binary @- localhost:4278/metrics

Is this something to be expected?

Please let me know if I can be of further help.

Thanks!

[sinkingpoint]

Hi there! Thanks for the report - this is unexpected. I'll get a fix out today

[sinkingpoint]

Cut 1.1.2 to address this

[sanjioh]

1.1.2 works as expected, thanks for the fast response!