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storage/remote: remove unused code now that tsdb implements ChunkQuerier (#7715)

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* storage/remote: remove unused code now that tsdb implements ChunkQuerier

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

* encodeChunks is unused too

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
This commit is contained in:
Julien Pivotto 2020-08-03 10:13:36 +02:00 committed by GitHub
parent 31929b83d5
commit 9848e77678
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1 changed files with 0 additions and 127 deletions
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127
storage/remote/codec.go
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@ -180,133 +180,6 @@ func NegotiateResponseType(accepted []prompb.ReadRequest_ResponseType) (prompb.R
return 0, errors.Errorf("server does not support any of the requested response types: %v; supported: %v", accepted, supported)
}
// TODO(bwlpotka): Remove when tsdb will support ChunkQuerier.
func DeprecatedStreamChunkedReadResponses(
stream io.Writer,
queryIndex int64,
ss storage.SeriesSet,
sortedExternalLabels []prompb.Label,
maxBytesInFrame int,
) (storage.Warnings, error) {
var (
chks []prompb.Chunk
lbls []prompb.Label
err error
lblsSize int
)
for ss.Next() {
series := ss.At()
iter := series.Iterator()
lbls = MergeLabels(labelsToLabelsProto(series.Labels(), lbls), sortedExternalLabels)
lblsSize = 0
for _, lbl := range lbls {
lblsSize += lbl.Size()
}
// Send at most one series per frame; series may be split over multiple frames according to maxBytesInFrame.
for {
// TODO(bwplotka): Use ChunkIterator once available in TSDB instead of re-encoding: https://github.com/prometheus/prometheus/pull/5882
chks, err = encodeChunks(iter, chks, maxBytesInFrame-lblsSize)
if err != nil {
return ss.Warnings(), err
}
if len(chks) == 0 {
break
}
b, err := proto.Marshal(&prompb.ChunkedReadResponse{
ChunkedSeries: []*prompb.ChunkedSeries{
{
Labels: lbls,
Chunks: chks,
},
},
QueryIndex: queryIndex,
})
if err != nil {
return ss.Warnings(), errors.Wrap(err, "marshal ChunkedReadResponse")
}
if _, err := stream.Write(b); err != nil {
return ss.Warnings(), errors.Wrap(err, "write to stream")
}
chks = chks[:0]
}
if err := iter.Err(); err != nil {
return ss.Warnings(), err
}
}
if err := ss.Err(); err != nil {
return ss.Warnings(), err
}
return ss.Warnings(), nil
}
// encodeChunks expects iterator to be ready to use (aka iter.Next() called before invoking).
func encodeChunks(iter chunkenc.Iterator, chks []prompb.Chunk, frameBytesLeft int) ([]prompb.Chunk, error) {
const maxSamplesInChunk = 120
var (
chkMint int64
chkMaxt int64
chk *chunkenc.XORChunk
app chunkenc.Appender
err error
)
for iter.Next() {
if chk == nil {
chk = chunkenc.NewXORChunk()
app, err = chk.Appender()
if err != nil {
return nil, err
}
chkMint, _ = iter.At()
}
app.Append(iter.At())
chkMaxt, _ = iter.At()
if chk.NumSamples() < maxSamplesInChunk {
continue
}
// Cut the chunk.
chks = append(chks, prompb.Chunk{
MinTimeMs: chkMint,
MaxTimeMs: chkMaxt,
Type: prompb.Chunk_Encoding(chk.Encoding()),
Data: chk.Bytes(),
})
chk = nil
frameBytesLeft -= chks[len(chks)-1].Size()
// We are fine with minor inaccuracy of max bytes per frame. The inaccuracy will be max of full chunk size.
if frameBytesLeft <= 0 {
break
}
}
if iter.Err() != nil {
return nil, errors.Wrap(iter.Err(), "iter TSDB series")
}
if chk != nil {
// Cut the chunk if exists.
chks = append(chks, prompb.Chunk{
MinTimeMs: chkMint,
MaxTimeMs: chkMaxt,
Type: prompb.Chunk_Encoding(chk.Encoding()),
Data: chk.Bytes(),
})
}
return chks, nil
}
// StreamChunkedReadResponses iterates over series, builds chunks and streams those to the caller.
// It expects Series set with populated chunks.
func StreamChunkedReadResponses(