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Chore: Query endpoint refactor (#41637)

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Get rid of using legacydata.RequestHandler in HTTPServer, /api/tsdb/query and pkg/expr 
with the goal of deprecating /api/tsdb/query and remove it completely eventually. This is 
the first step of cleaning up the HTTP API query endpoint.

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
Co-authored-by: Alexander Emelin <frvzmb@gmail.com>
This commit is contained in:
Marcus Efraimsson
2021-11-29 14:21:54 +01:00
committed by GitHub
co-authored by Alexander Emelin
parent 6e8cc426d6
commit 8927a3ca20
10 changed files with 242 additions and 316 deletions
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pkg/tsdb/legacydata/dataframes.go
-12
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@@ -37,18 +37,6 @@ func NewDecodedDataFrames(decodedFrames data.Frames) DataFrames {
}
}
// NewEncodedDataFrames instantiates DataFrames from encoded frames.
//
// This one is primarily used for creating DataFrames when receiving encoded data frames from an external
// plugin or similar. This may allow the encoded data frames to be returned to Grafana UI without any additional
// decoding/encoding required. In Grafana alerting scenario it needs to operate on decoded data frames why encoded
// frames needs to be decoded before usage.
func NewEncodedDataFrames(encodedFrames [][]byte) DataFrames {
return &dataFrames{
encoded: encodedFrames,
}
}
func (df *dataFrames) Encoded() ([][]byte, error) {
if df.encoded == nil {
encoded, err := df.decoded.MarshalArrow()