Files
grafana/pkg/infra/httpclient/httpclientprovider/response_limit_middleware.go
T
Dimitris Sotirakis ba9d5540b8 Datasources: Introduce response_limit for datasource responses (#38962)
* Introduce response_limit for datasource responses

* Fix lint

* Fix tests

* Add case where limit <= 0 - added parametrized tests

* Add max_bytes_reader.go

* Use new httpclient.MaxBytesReader instead of net/http one

* Fixes according to reviewer's comments

* Add tests for max_bytes_reader

* Add small piece in configuration.md

* Further fixes according to reviewer's comments

* Fix linting - fix test
2021-09-10 16:51:06 +03:00

29 lines
833 B
Go

package httpclientprovider
import (
"net/http"
sdkhttpclient "github.com/grafana/grafana-plugin-sdk-go/backend/httpclient"
"github.com/grafana/grafana/pkg/infra/httpclient"
)
// ResponseLimitMiddlewareName is the middleware name used by ResponseLimitMiddleware.
const ResponseLimitMiddlewareName = "response-limit"
func ResponseLimitMiddleware(limit int64) sdkhttpclient.Middleware {
return sdkhttpclient.NamedMiddlewareFunc(ResponseLimitMiddlewareName, func(opts sdkhttpclient.Options, next http.RoundTripper) http.RoundTripper {
if limit <= 0 {
return next
}
return sdkhttpclient.RoundTripperFunc(func(req *http.Request) (*http.Response, error) {
res, err := next.RoundTrip(req)
if err != nil {
return nil, err
}
res.Body = httpclient.MaxBytesReader(res.Body, limit)
return res, nil
})
})
}