tsdb

package
v0.10.0 Latest Latest
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 Go to latest Published: Feb 4, 2016 License: MIT Imports: 17 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	B1 = iota
	BZ1
	TSM1
)

Variables

View Source 
var (
	// ErrFieldNotFound is returned when a field cannot be found.
	ErrFieldNotFound = errors.New("field not found")

	// ErrFieldUnmappedID is returned when the system is presented, during decode, with a field ID
	// there is no mapping for.
	ErrFieldUnmappedID = errors.New("field ID not mapped")
)

Functions

func ConvertToValue 

func ConvertToValue(k int64, v interface{}) tsm.Value

func DecodeKeyValue 

func DecodeKeyValue(field string, dec *FieldCodec, k, v []byte) (int64, interface{})

DecodeKeyValue decodes the key and value from bytes.

func MeasurementFromSeriesKey 

func MeasurementFromSeriesKey(key string) string

MeasurementFromSeriesKey returns the Measurement name for a given series.

Types

type BoolValue 

type BoolValue struct {
	T time.Time
	V bool
}

func (*BoolValue) Size 

func (b *BoolValue) Size() int

func (*BoolValue) String 

func (f *BoolValue) String() string

func (*BoolValue) Time 

func (b *BoolValue) Time() time.Time

func (*BoolValue) UnixNano 

func (b *BoolValue) UnixNano() int64

func (*BoolValue) Value 

func (b *BoolValue) Value() interface{}

type Cursor 

type Cursor interface {
	SeekTo(seek int64) (key int64, value interface{})
	Next() (key int64, value interface{})
}

Cursor represents an iterator over a series.

type Database 

type Database struct {
	// contains filtered or unexported fields
}

Database represents an entire database on disk.

func NewDatabase 

func NewDatabase(path string) *Database

NewDatabase creates a database instance using data at path.

func (*Database) Name 

func (d *Database) Name() string

Name returns the name of the database.

func (*Database) Path 

func (d *Database) Path() string

Path returns the path to the database.

func (*Database) Shards 

func (d *Database) Shards() ([]*ShardInfo, error)

Shards returns information for every shard in the database.

type EngineFormat 

type EngineFormat int

func (EngineFormat) String 

func (e EngineFormat) String() string

String returns the string format of the engine.

type Field 

type Field struct {
	ID   uint8             `json:"id,omitempty"`
	Name string            `json:"name,omitempty"`
	Type influxql.DataType `json:"type,omitempty"`
}

Field represents an encoded field.

type FieldCodec 

type FieldCodec struct {
	// contains filtered or unexported fields
}

FieldCodec provides encoding and decoding functionality for the fields of a given Measurement.

func NewFieldCodec 

func NewFieldCodec(fields map[string]*Field) *FieldCodec

NewFieldCodec returns a FieldCodec for the given Measurement. Must be called with a RLock that protects the Measurement.

func (*FieldCodec) DecodeByID 

func (f *FieldCodec) DecodeByID(targetID uint8, b []byte) (interface{}, error)

DecodeByID scans a byte slice for a field with the given ID, converts it to its expected type, and return that value.

func (*FieldCodec) DecodeByName 

func (f *FieldCodec) DecodeByName(name string, b []byte) (interface{}, error)

DecodeByName scans a byte slice for a field with the given name, converts it to its expected type, and return that value.

func (*FieldCodec) DecodeFields 

func (f *FieldCodec) DecodeFields(b []byte) (map[uint8]interface{}, error)

DecodeFields decodes a byte slice into a set of field ids and values.

func (*FieldCodec) DecodeFieldsWithNames 

func (f *FieldCodec) DecodeFieldsWithNames(b []byte) (map[string]interface{}, error)

DecodeFieldsWithNames decodes a byte slice into a set of field names and values

func (*FieldCodec) EncodeFields 

func (f *FieldCodec) EncodeFields(values map[string]interface{}) ([]byte, error)

EncodeFields converts a map of values with string keys to a byte slice of field IDs and values.

If a field exists in the codec, but its type is different, an error is returned. If a field is not present in the codec, the system panics.

func (*FieldCodec) FieldByName 

func (f *FieldCodec) FieldByName(name string) *Field

FieldByName returns the field by its name. It will return a nil if not found

func (*FieldCodec) FieldIDByName 

func (f *FieldCodec) FieldIDByName(s string) (uint8, error)

FieldIDByName returns the ID for the given field.

func (*FieldCodec) Fields 

func (f *FieldCodec) Fields() (a []*Field)

type FloatValue 

type FloatValue struct {
	T time.Time
	V float64
}

func (*FloatValue) Size 

func (f *FloatValue) Size() int

func (*FloatValue) String 

func (f *FloatValue) String() string

func (*FloatValue) Time 

func (f *FloatValue) Time() time.Time

func (*FloatValue) UnixNano 

func (f *FloatValue) UnixNano() int64

func (*FloatValue) Value 

func (f *FloatValue) Value() interface{}

type Int64Value 

type Int64Value struct {
	T time.Time
	V int64
}

func (*Int64Value) Size 

func (v *Int64Value) Size() int

func (*Int64Value) String 

func (f *Int64Value) String() string

func (*Int64Value) Time 

func (v *Int64Value) Time() time.Time

func (*Int64Value) UnixNano 

func (v *Int64Value) UnixNano() int64

func (*Int64Value) Value 

func (v *Int64Value) Value() interface{}

type MeasurementFields 

type MeasurementFields struct {
	Fields map[string]*Field `json:"fields"`
	Codec  *FieldCodec
}

MeasurementFields is a mapping from measurements to its fields.

func (*MeasurementFields) MarshalBinary 

func (m *MeasurementFields) MarshalBinary() ([]byte, error)

MarshalBinary encodes the object to a binary format.

func (*MeasurementFields) UnmarshalBinary 

func (m *MeasurementFields) UnmarshalBinary(buf []byte) error

UnmarshalBinary decodes the object from a binary format.

type Series 

type Series struct {
	Key  string
	Tags map[string]string
}

Series represents a series in the shard.

func (*Series) MarshalBinary 

func (s *Series) MarshalBinary() ([]byte, error)

MarshalBinary encodes the object to a binary format.

func (*Series) UnmarshalBinary 

func (s *Series) UnmarshalBinary(buf []byte) error

UnmarshalBinary decodes the object from a binary format.

type ShardInfo 

type ShardInfo struct {
	Database        string
	RetentionPolicy string
	Path            string
	Format          EngineFormat
	Size            int64
}

ShardInfo is the description of a shard on disk.

func (*ShardInfo) FormatAsString 

func (s *ShardInfo) FormatAsString() string

FormatAsString returns the format of the shard as a string.

func (*ShardInfo) FullPath 

func (s *ShardInfo) FullPath(dataPath string) string

FullPath returns the full path to the shard, given the data directory root.

type ShardInfos 

type ShardInfos []*ShardInfo

func (ShardInfos) Databases 

func (s ShardInfos) Databases() []string

Databases returns the sorted unique set of databases for the shards.

func (ShardInfos) ExclusiveDatabases 

func (s ShardInfos) ExclusiveDatabases(exc []string) ShardInfos

ExclusiveDatabases returns a copy of the ShardInfo, with shards associated with the given databases present. If the given set is empty, all databases are returned.

func (ShardInfos) FilterFormat 

func (s ShardInfos) FilterFormat(fmt EngineFormat) ShardInfos

FilterFormat returns a copy of the ShardInfos, with shards of the given format removed.

func (ShardInfos) Len 

func (s ShardInfos) Len() int

func (ShardInfos) Less 

func (s ShardInfos) Less(i, j int) bool

func (ShardInfos) Size 

func (s ShardInfos) Size() int64

Size returns the space on disk consumed by the shards.

func (ShardInfos) Swap 

func (s ShardInfos) Swap(i, j int)

type StringValue 

type StringValue struct {
	T time.Time
	V string
}

func (*StringValue) Size 

func (v *StringValue) Size() int

func (*StringValue) String 

func (f *StringValue) String() string

func (*StringValue) Time 

func (v *StringValue) Time() time.Time

func (*StringValue) UnixNano 

func (v *StringValue) UnixNano() int64

func (*StringValue) Value 

func (v *StringValue) Value() interface{}

Source Files

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Directories

Path Synopsis
Package internal is a generated protocol buffer package.
 Package internal is a generated protocol buffer package.

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