package storage

import "github.com/influxdata/influxdb/services/storage"

Index ¶

• Variables
• func HasFieldKeyOrValue(expr influxql.Expr) (bool, bool)
• func HasSingleMeasurementNoOR(expr influxql.Expr) (string, bool)
• func NewContextWithReadOptions(ctx context.Context, opts *ReadOptions) context.Context
• func RewriteExprRemoveFieldKeyAndValue(expr influxql.Expr) influxql.Expr
• type MeasurementNamesRequest
• type MetaClient
• type ReadOptions
• func ReadOptionsFromContext(ctx context.Context) *ReadOptions
• type ReadSource
• func GetReadSource(any *anypb.Any) (*ReadSource, error)
• func (*ReadSource) Descriptor() ([]byte, []int)
• func (x *ReadSource) GetDatabase() string
• func (x *ReadSource) GetRetentionPolicy() string
• func (*ReadSource) ProtoMessage()
• func (x *ReadSource) ProtoReflect() protoreflect.Message
• func (x *ReadSource) Reset()
• func (x *ReadSource) String() string
• type Store
• func NewStore(store *tsdb.Store, metaClient MetaClient) *Store
• func (s *Store) Delete(database string, sources []influxql.Source, condition influxql.Expr) error
• func (s *Store) DeleteRetentionPolicy(database, name string) error
• func (s *Store) GetSource(db, rp string) proto.Message
• func (s *Store) MeasurementNames(ctx context.Context, req *MeasurementNamesRequest) (cursors.StringIterator, error)
• func (s *Store) ReadFilter(ctx context.Context, req *datatypes.ReadFilterRequest) (reads.ResultSet, error)
• func (s *Store) ReadFilterLimit(ctx context.Context, req *datatypes.ReadFilterRequest, limitShardIDs []uint64) (reads.ResultSet, error)
• func (s *Store) ReadGroup(ctx context.Context, req *datatypes.ReadGroupRequest) (reads.GroupResultSet, error)
• func (s *Store) ReadGroupLimit(ctx context.Context, req *datatypes.ReadGroupRequest, limitShardIDs []uint64) (reads.GroupResultSet, error)
• func (s *Store) TagKeys(ctx context.Context, req *datatypes.TagKeysRequest) (cursors.StringIterator, error)
• func (s *Store) TagValues(ctx context.Context, req *datatypes.TagValuesRequest) (cursors.StringIterator, error)
• func (s *Store) WindowAggregate(ctx context.Context, req *datatypes.ReadWindowAggregateRequest) (reads.ResultSet, error)
• func (s *Store) WindowAggregateLimit(ctx context.Context, req *datatypes.ReadWindowAggregateRequest, limitShardIDs []uint64) (reads.ResultSet, error)
• func (s *Store) WithLogger(log *zap.Logger)

Variables ¶

var (
	ErrMissingReadSource = errors.New("missing ReadSource")
)

var File_source_proto protoreflect.FileDescriptor

Functions ¶

func HasFieldKeyOrValue ¶

func HasFieldKeyOrValue(expr influxql.Expr) (bool, bool)

func HasSingleMeasurementNoOR ¶

func HasSingleMeasurementNoOR(expr influxql.Expr) (string, bool)

HasSingleMeasurementNoOR determines if an index optimisation is available.

Typically the read service will use the query engine to retrieve all field keys for all measurements that match the expression, which can be very inefficient if it can be proved that only one measurement matches the expression.

This condition is determined when the following is true:

• there is only one occurrence of the tag key `_measurement`.
• there are no OR operators in the expression tree.
• the operator for the `_measurement` binary expression is ==.

func NewContextWithReadOptions ¶

func NewContextWithReadOptions(ctx context.Context, opts *ReadOptions) context.Context

NewContextWithRequestOptions returns a new Context with nodeID added.

func RewriteExprRemoveFieldKeyAndValue ¶

func RewriteExprRemoveFieldKeyAndValue(expr influxql.Expr) influxql.Expr

Types ¶

type MeasurementNamesRequest ¶

type MeasurementNamesRequest struct {
	MeasurementsSource *anypb.Any
	Predicate          *datatypes.Predicate
}

type MetaClient ¶

type MetaClient interface {
	Database(name string) *meta.DatabaseInfo
	ShardGroupsByTimeRange(database, policy string, min, max time.Time) (a []meta.ShardGroupInfo, err error)
}

type ReadOptions ¶

type ReadOptions struct {
	NodeID uint64
}

ReadOptions are additional options that may be passed with context.Context to configure the behavior of a storage read request.

func ReadOptionsFromContext ¶

func ReadOptionsFromContext(ctx context.Context) *ReadOptions

ReadOptionsFromContext returns the ReadOptions associated with the context or nil if no additional options have been specified.

type ReadSource ¶

type ReadSource struct {

	// Database identifies which database to query.
	Database string `protobuf:"bytes,1,opt,name=database,proto3" json:"database,omitempty"`
	// RetentionPolicy identifies which retention policy to query.
	RetentionPolicy string `protobuf:"bytes,2,opt,name=RetentionPolicy,proto3" json:"RetentionPolicy,omitempty"`
	// contains filtered or unexported fields
}

func GetReadSource ¶

func GetReadSource(any *anypb.Any) (*ReadSource, error)

GetReadSource will attempt to unmarshal a ReadSource from the ReadRequest or return an error if no valid resource is present.

func (*ReadSource) Descriptor ¶

func (*ReadSource) Descriptor() ([]byte, []int)

Deprecated: Use ReadSource.ProtoReflect.Descriptor instead.

func (*ReadSource) GetDatabase ¶

func (x *ReadSource) GetDatabase() string

func (*ReadSource) GetRetentionPolicy ¶

func (x *ReadSource) GetRetentionPolicy() string

func (*ReadSource) ProtoMessage ¶

func (*ReadSource) ProtoMessage()

func (*ReadSource) ProtoReflect ¶

func (x *ReadSource) ProtoReflect() protoreflect.Message

func (*ReadSource) Reset ¶

func (x *ReadSource) Reset()

func (*ReadSource) String ¶

func (x *ReadSource) String() string

type Store ¶

type Store struct {
	TSDBStore  *tsdb.Store
	MetaClient MetaClient
	Logger     *zap.Logger
}

func NewStore ¶

func NewStore(store *tsdb.Store, metaClient MetaClient) *Store

func (*Store) Delete ¶

func (s *Store) Delete(database string, sources []influxql.Source, condition influxql.Expr) error

func (*Store) DeleteRetentionPolicy ¶

func (s *Store) DeleteRetentionPolicy(database, name string) error

func (*Store) GetSource ¶

func (s *Store) GetSource(db, rp string) proto.Message

func (*Store) MeasurementNames ¶

func (s *Store) MeasurementNames(ctx context.Context, req *MeasurementNamesRequest) (cursors.StringIterator, error)

func (*Store) ReadFilter ¶

func (s *Store) ReadFilter(ctx context.Context, req *datatypes.ReadFilterRequest) (reads.ResultSet, error)

func (*Store) ReadFilterLimit ¶

func (s *Store) ReadFilterLimit(ctx context.Context, req *datatypes.ReadFilterRequest, limitShardIDs []uint64) (reads.ResultSet, error)

func (*Store) ReadGroup ¶

func (s *Store) ReadGroup(ctx context.Context, req *datatypes.ReadGroupRequest) (reads.GroupResultSet, error)

func (*Store) ReadGroupLimit ¶

func (s *Store) ReadGroupLimit(ctx context.Context, req *datatypes.ReadGroupRequest, limitShardIDs []uint64) (reads.GroupResultSet, error)

func (*Store) TagKeys ¶

func (s *Store) TagKeys(ctx context.Context, req *datatypes.TagKeysRequest) (cursors.StringIterator, error)

func (*Store) TagValues ¶

func (s *Store) TagValues(ctx context.Context, req *datatypes.TagValuesRequest) (cursors.StringIterator, error)

func (*Store) WindowAggregate ¶

func (s *Store) WindowAggregate(ctx context.Context, req *datatypes.ReadWindowAggregateRequest) (reads.ResultSet, error)

func (*Store) WindowAggregateLimit ¶

func (s *Store) WindowAggregateLimit(ctx context.Context, req *datatypes.ReadWindowAggregateRequest, limitShardIDs []uint64) (reads.ResultSet, error)

func (*Store) WithLogger ¶

func (s *Store) WithLogger(log *zap.Logger)

WithLogger sets the logger for the service.

Source Files ¶

context.go gen.go predicate_influxql.go series_cursor.go source.pb.go store.go