92 lines
2.8 KiB
Go
92 lines
2.8 KiB
Go
package reads
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import (
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"context"
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"github.com/influxdata/influxdb/v2/models"
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"github.com/influxdata/influxdb/v2/storage/reads/datatypes"
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"github.com/influxdata/influxdb/v2/tsdb/cursors"
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"google.golang.org/protobuf/proto"
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)
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type ResultSet interface {
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// Next advances the ResultSet to the next cursor. It returns false
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// when there are no more cursors.
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Next() bool
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// Cursor returns the most recent cursor after a call to Next.
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Cursor() cursors.Cursor
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// Tags returns the tags for the most recent cursor after a call to Next.
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Tags() models.Tags
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// Close releases any resources allocated by the ResultSet.
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Close()
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// Err returns the first error encountered by the ResultSet.
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Err() error
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Stats() cursors.CursorStats
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}
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type GroupResultSet interface {
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// Next advances the GroupResultSet and returns the next GroupCursor. It
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// returns nil if there are no more groups.
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Next() GroupCursor
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// Close releases any resources allocated by the GroupResultSet.
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Close()
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// Err returns the first error encountered by the GroupResultSet.
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Err() error
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}
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type GroupCursor interface {
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// Next advances to the next cursor. Next will return false when there are no
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// more cursors in the current group.
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Next() bool
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// Cursor returns the most recent cursor after a call to Next.
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Cursor() cursors.Cursor
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// Tags returns the tags for the most recent cursor after a call to Next.
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Tags() models.Tags
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// Keys returns the union of all tag key names for all series produced by
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// this GroupCursor.
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Keys() [][]byte
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// PartitionKeyVals returns the values of all tags identified by the
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// keys specified in ReadRequest#GroupKeys. The tag values values will
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// appear in the same order as the GroupKeys.
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//
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// When the datatypes.GroupNone strategy is specified, PartitionKeyVals will
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// be nil.
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PartitionKeyVals() [][]byte
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// Close releases any resources allocated by the GroupCursor.
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Close()
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// Err returns the first error encountered by the GroupCursor.
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Err() error
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Stats() cursors.CursorStats
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Aggregate() *datatypes.Aggregate
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}
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type Store interface {
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ReadFilter(ctx context.Context, req *datatypes.ReadFilterRequest) (ResultSet, error)
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ReadGroup(ctx context.Context, req *datatypes.ReadGroupRequest) (GroupResultSet, error)
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// WindowAggregate will invoke a ReadWindowAggregateRequest against the Store.
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WindowAggregate(ctx context.Context, req *datatypes.ReadWindowAggregateRequest) (ResultSet, error)
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TagKeys(ctx context.Context, req *datatypes.TagKeysRequest) (cursors.StringIterator, error)
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TagValues(ctx context.Context, req *datatypes.TagValuesRequest) (cursors.StringIterator, error)
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ReadSeriesCardinality(ctx context.Context, req *datatypes.ReadSeriesCardinalityRequest) (cursors.Int64Iterator, error)
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SupportReadSeriesCardinality(ctx context.Context) bool
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GetSource(orgID, bucketID uint64) proto.Message
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}
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