Björn Rabenstein

This error could possibly even include a timeout, in which case we would prefer to not expose any metrics at all rather than an incomplete set (which can lead to...

promhttp: Investigate interaction of the metrics handler with certain middlewares

4

https://github.com/prometheus/prometheus/issues/5085 demonstrated problems if the compression middleware from the echo framework was used, see https://github.com/labstack/echo/blob/master/middleware/compress.go . The `promhttp.Handler` his its own gzip handling. Perhaps it's inevitable to then not work...

Consider more efficient protobuf implementations

12

Since we will have significant breaking changes in 0.10, this is a good time to consider using https://github.com/gogo/protobuf instead of the current stock protobuf implementation. In high frequency scrape scenarios,...

OpenMetrics info type (in v1)

1

OpenMetrics makes the `..._info` metric pattern explicit as its own type. In v1, we can add the type and emulate it for the existing Prometheus format by creating the usual...

Easy way to initialize counter vecs?

6

See code like https://github.com/prometheus/prometheus/blob/b0adfea8d5e883cbab5c7e4113f8ea91f7cbc099/rules/manager.go#L75-L78 . If you know in advance all the values each label can take, it is recommended to initialize all combinations so that each possible counter is...

Handle query parameter of a scrape

7

A prerequisite to #135, this is about the story how to handle scrape query parameter in general. This should help to implement the blackbox exporter in a cleaner way, cf....

Detect name collisions around _bucket, _count, _sum, and the quantile label during registration

3

~~With~~ Once #222 is done, we can ~~now~~ then detect above mentioned collision during registration time. See #108 for more details.

Consider optional disabling of metric sorting

3

With extremely large exposition (example: kube-state-metrics on a large cluster will expose hundreds of MiB of metrics data), sorting of metrics becomes a quite significant computational burden. As metrics sorting...

Consider partitioning InstrumentHandlerInFlight middleware by method

1

Then it would accept a GaugeVec which might or might not have a method label (but no others). It would break the fairly frequent use of this middleware. Thus, it's...

Consider eliminating MustRegister, moving global registry to promauto.

2

With the additions to the promauto package in #713 , the need for `MustRegister` is diminished: Whoever doesn't care about panicking, can and should use `promauto` constructors, no matter if...