legacy index reader getshards

Signed-off-by: Owen Diehl <[email protected]>

pkg/storage/stores/series/series_index_store.go

@@ -2,8 +2,8 @@ package series
 
 import (
 	"context"
-	"errors"
 	"fmt"
+	"math"
 	"sort"
 	"sync"
 
@@ -761,14 +761,24 @@ func (c *IndexReaderWriter) Volume(_ context.Context, _ string, _, _ model.Time,
 	return nil, nil
 }
 
+// old index stores do not implement dynamic sharidng -- skip
 func (c *IndexReaderWriter) GetShards(
 	_ context.Context,
 	_ string,
 	_, _ model.Time,
 	_ uint64,
 	_ chunk.Predicate,
 ) ([]logproto.Shard, error) {
-	return nil, errors.New("unimplemented GetShards() on legacy index stores")
+	// should not be called for legacy indices at all, so just return a single shard covering everything
+	// could be improved by reading schema shards
+	return []logproto.Shard{
+		logproto.Shard{
+			Bounds: logproto.FPBounds{
+				Min: 0,
+				Max: math.MaxUint64,
+			},
+		},
+	}, nil
 }
 
 // old index stores do not implement tsdb.ForSeries -- skip