Fix(query-frontend): /label/<name>/values endpoint to use right set of middlewares
#6072
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…dleware
Previously, only `/label/` and `/labels` endpoint were using correct tripperware middleware
on the query frontend(e.g: stats collector middleware)
This PR fixes it for `/label/<name>/values` endpoint as well.
This is useful to support `metrics.go` stats middleware for `label/{name}/values` endpoint as well.
Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>
/label/<name>/values endpoint to use right mid…/label/<name>/values endpoint to use right set of middlewares
dannykopping
approved these changes
May 2, 2022
| @@ -232,7 +232,7 @@ func getOperation(path string) string { | |||
| return QueryRangeOp | |||
| case strings.HasSuffix(path, "/series"): | |||
| return SeriesOp | |||
| case strings.HasSuffix(path, "/labels") || strings.HasSuffix(path, "/label"): | |||
| case strings.HasSuffix(path, "/labels") || strings.HasSuffix(path, "/label") || strings.HasSuffix(path, "/values"): | |||
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This function feels a bit flimsy, and could introduce some interesting bugs in the future.
We should refactor this at some point
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Thanks for adding a test!
kavirajk
commented
May 2, 2022
| @@ -232,7 +232,7 @@ func getOperation(path string) string { | |||
| return QueryRangeOp | |||
| case strings.HasSuffix(path, "/series"): | |||
| return SeriesOp | |||
| case strings.HasSuffix(path, "/labels") || strings.HasSuffix(path, "/label"): | |||
| case strings.HasSuffix(path, "/labels") || strings.HasSuffix(path, "/label") || strings.HasSuffix(path, "/values"): | |||
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Q: Does anyone know why middeware chain was disabled for /labels/<name>/values endpoint on the query frontend?
We in fact have a test to lock that behaviour.
https://github.com/grafana/loki/blob/main/pkg/querier/queryrange/roundtrip_test.go#L390-L400 (which is the only test failing for this PR)
I wanted this support so that middlewares like metrics.go stats collector can work on this endpoints too. (#5971)
Any thoughts?
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If no protest, I can remove that test!
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I bet it was omitted by mistake
Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>
Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>
kavirajk
added a commit
that referenced
this pull request
May 3, 2022
…el values endpoint
When encode/decode `http.Request` into `querybase.Request` we re-create request.Path.
Before this PR, both `/labels/` and `/labels/{name}/values` endpoint was decoding into same URL path `/labels/` before
forwarding to the querier. So it always returns label names as response.
This bug became visible after enabling all the middleware for `/labels/{name}/values` endpoint as well via #6072
Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>
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kavirajk
added a commit
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May 3, 2022
…el values endpoint (#6084) When encode/decode `http.Request` into `querybase.Request` we re-create request.Path. Before this PR, both `/labels/` and `/labels/{name}/values` endpoint was decoding into same URL path `/labels/` before forwarding to the querier. So it always returns label names as response. This bug became visible after enabling all the middleware for `/labels/{name}/values` endpoint as well via #6072 Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>
This was referenced Jun 28, 2022
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What this PR does / why we need it:
Previously, only
/label/and/labelsendpoint were using correct tripperware middlewareon the query frontend(e.g: stats collector middleware)
This PR fixes it for
/label/<name>/valuesendpoint as well.This is useful to support
metrics.gostats middleware forlabel/{name}/valuesendpointSigned-off-by: Kaviraj kavirajkanagaraj@gmail.com
Which issue(s) this PR fixes:
Fixes #
Special notes for your reviewer:
Related to #5971
Checklist
CHANGELOG.md.docs/sources/upgrading/_index.md