gen

package
v1.8.3 Latest Latest
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 Go to latest Published: Sep 30, 2020 License: MIT Imports: 22 Imported by: 4

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CompareSeries 

func CompareSeries(a, b seriesKeyField) int

Compare returns an integer comparing two SeriesGenerator instances lexicographically. The result will be 0 if a==b, -1 if a < b, and +1 if a > b. A nil argument is equivalent to an empty SeriesGenerator.

func TagValuesLimitOption 

func TagValuesLimitOption(n int) tagsValuesOption

func TagValuesSampleOption 

func TagValuesSampleOption(n float64) tagsValuesOption

func WalkDown 

func WalkDown(v Visitor, node SchemaNode)

WalkDown performs a pre-order, depth-first traversal of the graph, calling v for each node. Pre-order starts by calling the visitor for the root and each child as it traverses down the graph to the leaves.

func WalkUp 

func WalkUp(v Visitor, node SchemaNode)

WalkUp performs a post-order, depth-first traversal of the graph, calling v for each node. Post-order starts by calling the visitor for the leaves then each parent as it traverses up the graph to the root.

Types

type BooleanValuesSequence 

type BooleanValuesSequence interface {
	Reset()
	Write(v []bool)
}

func NewBooleanArrayValuesSequence 

func NewBooleanArrayValuesSequence(v []bool) BooleanValuesSequence

func NewBooleanConstantValuesSequence 

func NewBooleanConstantValuesSequence(v bool) BooleanValuesSequence

type CountableSequence 

type CountableSequence interface {
	Sequence
	Count() int
}

type CounterByteSequence 

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

func NewCounterByteSequence 

func NewCounterByteSequence(format string, start, end int) *CounterByteSequence

func NewCounterByteSequenceCount 

func NewCounterByteSequenceCount(n int) *CounterByteSequence

func (*CounterByteSequence) Count 

func (s *CounterByteSequence) Count() int

func (*CounterByteSequence) Next 

func (s *CounterByteSequence) Next() bool

func (*CounterByteSequence) Value 

func (s *CounterByteSequence) Value() string

type Field 

type Field struct {
	Name          string
	Count         int64
	TimePrecision *precision `toml:"time-precision"` // TimePrecision determines the precision for generated timestamp values
	TimeInterval  *duration  `toml:"time-interval"`  // TimeInterval determines the duration between timestamp values
	Source        FieldSource
}

func (*Field) TimeSequenceSpec added in v1.7.6 

func (t *Field) TimeSequenceSpec() TimeSequenceSpec

func (*Field) UnmarshalTOML 

func (t *Field) UnmarshalTOML(data interface{}) error

type FieldArraySource 

type FieldArraySource struct {
	Value interface{}
}

func (*FieldArraySource) String 

func (f *FieldArraySource) String() string

type FieldConstantValue 

type FieldConstantValue struct {
	Value interface{}
}

func (*FieldConstantValue) String 

func (f *FieldConstantValue) String() string

type FieldFloatRandomSource 

type FieldFloatRandomSource struct {
	Seed     int64
	Min, Max float64
}

func (*FieldFloatRandomSource) String 

func (f *FieldFloatRandomSource) String() string

type FieldIntegerZipfSource 

type FieldIntegerZipfSource struct {
	Seed int64
	S, V float64
	IMAX uint64
}

func (*FieldIntegerZipfSource) String 

func (f *FieldIntegerZipfSource) String() string

type FieldSource 

type FieldSource interface {
	fmt.Stringer
	SchemaNode
	// contains filtered or unexported methods
}

type FieldValuesSpec 

type FieldValuesSpec struct {
	TimeSequenceSpec
	Name     string
	DataType models.FieldType
	Values   NewTimeValuesSequenceFn
}

type Fields 

type Fields []Field

type FloatValuesSequence 

type FloatValuesSequence interface {
	Reset()
	Write(v []float64)
}

func NewFloatArrayValuesSequence 

func NewFloatArrayValuesSequence(v []float64) FloatValuesSequence

func NewFloatConstantValuesSequence 

func NewFloatConstantValuesSequence(v float64) FloatValuesSequence

func NewFloatRandomValuesSequence 

func NewFloatRandomValuesSequence(min, max float64, r *rand.Rand) FloatValuesSequence

type IntegerValuesSequence 

type IntegerValuesSequence interface {
	Reset()
	Write(v []int64)
}

func NewIntegerArrayValuesSequence 

func NewIntegerArrayValuesSequence(v []int64) IntegerValuesSequence

func NewIntegerConstantValuesSequence 

func NewIntegerConstantValuesSequence(v int64) IntegerValuesSequence

func NewIntegerZipfValuesSequence 

func NewIntegerZipfValuesSequence(s *FieldIntegerZipfSource) IntegerValuesSequence

NewIntegerZipfValuesSequence produces int64 values using a Zipfian distribution described by s.

type Measurement 

type Measurement struct {
	Name        string
	SeriesLimit *SeriesLimit `toml:"series-limit"`
	Sample      *sample
	Tags        Tags
	Fields      Fields
}

type MeasurementSpec 

type MeasurementSpec struct {
	Name            string
	SeriesLimit     *SeriesLimit
	TagsSpec        *TagsSpec
	FieldValuesSpec *FieldValuesSpec
}

type Measurements 

type Measurements []Measurement

type NewCountableSequenceFn 

type NewCountableSequenceFn func() CountableSequence

type NewTagsValuesSequenceFn 

type NewTagsValuesSequenceFn func() TagsSequence

type NewTimeValuesSequenceFn 

type NewTimeValuesSequenceFn func(spec TimeSequenceSpec) TimeValuesSequence

NewTimeValuesSequenceFn returns a TimeValuesSequence that will generate a sequence of values based on the spec.

type Schema 

type Schema struct {
	Title        string
	Version      string
	SeriesLimit  *SeriesLimit `toml:"series-limit"`
	Measurements Measurements
}

func NewSchemaFromPath 

func NewSchemaFromPath(path string) (*Schema, error)

type SchemaNode 

type SchemaNode interface {
	// contains filtered or unexported methods
}

type Sequence 

type Sequence interface {
	Next() bool
	Value() string
}

type SeriesGenerator 

type SeriesGenerator interface {
	// Next advances the series generator to the next series key.
	Next() bool

	// Key returns the series key.
	// The returned value may be cached.
	Key() []byte

	// Name returns the name of the measurement.
	// The returned value may be modified by a subsequent call to Next.
	Name() []byte

	// Tags returns the tag set.
	// The returned value may be modified by a subsequent call to Next.
	Tags() models.Tags

	// Field returns the name of the field.
	// The returned value may be modified by a subsequent call to Next.
	Field() []byte

	// TimeValuesGenerator returns a values sequence for the current series.
	TimeValuesGenerator() TimeValuesSequence
}

func NewMergedSeriesGenerator 

func NewMergedSeriesGenerator(s []SeriesGenerator) SeriesGenerator

func NewMergedSeriesGeneratorLimit 

func NewMergedSeriesGeneratorLimit(s []SeriesGenerator, n int64) SeriesGenerator

func NewSeriesGenerator 

func NewSeriesGenerator(name []byte, field []byte, vg TimeValuesSequence, tags TagsSequence) SeriesGenerator

func NewSeriesGeneratorFromSpec 

func NewSeriesGeneratorFromSpec(s *Spec, tr TimeRange) SeriesGenerator

func NewSeriesGeneratorLimit 

func NewSeriesGeneratorLimit(name []byte, field []byte, vg TimeValuesSequence, tags TagsSequence, n int64) SeriesGenerator

type SeriesLimit 

type SeriesLimit int64

func (*SeriesLimit) UnmarshalTOML 

func (s *SeriesLimit) UnmarshalTOML(data interface{}) error

type Spec 

type Spec struct {
	SeriesLimit  *int64
	Measurements []MeasurementSpec
}

func NewSpecFromPath 

func NewSpecFromPath(p string) (*Spec, error)

func NewSpecFromSchema 

func NewSpecFromSchema(root *Schema) (*Spec, error)

func NewSpecFromToml 

func NewSpecFromToml(s string) (*Spec, error)

type StringArraySequence 

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

func NewStringArraySequence 

func NewStringArraySequence(vals []string) *StringArraySequence

func (*StringArraySequence) Count 

func (s *StringArraySequence) Count() int

func (*StringArraySequence) Next 

func (s *StringArraySequence) Next() bool

func (*StringArraySequence) Value 

func (s *StringArraySequence) Value() string

type StringConstantSequence added in v1.7.6 

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

func NewStringConstantSequence added in v1.7.6 

func NewStringConstantSequence(val string) *StringConstantSequence

func (*StringConstantSequence) Count added in v1.7.6 

func (s *StringConstantSequence) Count() int

func (*StringConstantSequence) Next added in v1.7.6 

func (s *StringConstantSequence) Next() bool

func (*StringConstantSequence) Value added in v1.7.6 

func (s *StringConstantSequence) Value() string

type StringValuesSequence 

type StringValuesSequence interface {
	Reset()
	Write(v []string)
}

func NewStringArrayValuesSequence 

func NewStringArrayValuesSequence(v []string) StringValuesSequence

func NewStringConstantValuesSequence 

func NewStringConstantValuesSequence(v string) StringValuesSequence

type Tag 

type Tag struct {
	Name   string
	Source TagSource
}

func (*Tag) UnmarshalTOML 

func (t *Tag) UnmarshalTOML(data interface{}) error

type TagArraySource 

type TagArraySource struct {
	Values []string
}

func (*TagArraySource) String 

func (s *TagArraySource) String() string

type TagFileSource 

type TagFileSource struct {
	Path string
}

func (*TagFileSource) String 

func (s *TagFileSource) String() string

type TagSequenceSource 

type TagSequenceSource struct {
	Format string
	Start  int64
	Count  int64
}

func (*TagSequenceSource) String 

func (t *TagSequenceSource) String() string

type TagSource 

type TagSource interface {
	fmt.Stringer
	SchemaNode
	// contains filtered or unexported methods
}

type TagValuesSpec 

type TagValuesSpec struct {
	TagKey string
	Values NewCountableSequenceFn
}

type Tags 

type Tags []Tag

type TagsSequence 

type TagsSequence interface {
	Next() bool
	Value() models.Tags
	Count() int
}

func NewTagsValuesSequenceCounts 

func NewTagsValuesSequenceCounts(prefix string, counts []int) TagsSequence

func NewTagsValuesSequenceKeysValues 

func NewTagsValuesSequenceKeysValues(keys []string, vals []CountableSequence, opts ...tagsValuesOption) TagsSequence

func NewTagsValuesSequenceValues 

func NewTagsValuesSequenceValues(prefix string, vals []CountableSequence) TagsSequence

type TagsSpec 

type TagsSpec struct {
	Tags   []*TagValuesSpec
	Sample *sample
}

type TimeRange 

type TimeRange struct {
	Start time.Time
	End   time.Time
}

func (TimeRange) Truncate added in v1.7.6 

func (t TimeRange) Truncate(d time.Duration) TimeRange

type TimeSequenceSpec 

type TimeSequenceSpec struct {
	// Count specifies the maximum number of values to generate.
	Count int

	// Start specifies the starting time for the values.
	Start time.Time

	// Delta specifies the interval between time stamps.
	Delta time.Duration

	// Precision specifies the precision of timestamp intervals
	Precision time.Duration
}

func (TimeSequenceSpec) ForTimeRange added in v1.7.6 

func (ts TimeSequenceSpec) ForTimeRange(tr TimeRange) TimeSequenceSpec

type TimeValuesSequence 

type TimeValuesSequence interface {
	Reset()
	Next() bool
	Values() Values
}

func NewTimeBooleanValuesSequence 

func NewTimeBooleanValuesSequence(count int, ts TimestampSequence, vs BooleanValuesSequence) TimeValuesSequence

func NewTimeFloatValuesSequence 

func NewTimeFloatValuesSequence(count int, ts TimestampSequence, vs FloatValuesSequence) TimeValuesSequence

func NewTimeIntegerValuesSequence 

func NewTimeIntegerValuesSequence(count int, ts TimestampSequence, vs IntegerValuesSequence) TimeValuesSequence

func NewTimeStringValuesSequence 

func NewTimeStringValuesSequence(count int, ts TimestampSequence, vs StringValuesSequence) TimeValuesSequence

func NewTimeUnsignedValuesSequence 

func NewTimeUnsignedValuesSequence(count int, ts TimestampSequence, vs UnsignedValuesSequence) TimeValuesSequence

type TimestampSequence 

type TimestampSequence interface {
	Reset()
	Write(ts []int64)
}

func NewTimestampSequenceFromSpec 

func NewTimestampSequenceFromSpec(spec TimeSequenceSpec) TimestampSequence

type UnsignedValuesSequence 

type UnsignedValuesSequence interface {
	Reset()
	Write(v []uint64)
}

func NewUnsignedArrayValuesSequence 

func NewUnsignedArrayValuesSequence(v []uint64) UnsignedValuesSequence

func NewUnsignedConstantValuesSequence 

func NewUnsignedConstantValuesSequence(v uint64) UnsignedValuesSequence

type Values 

type Values interface {
	MinTime() int64
	MaxTime() int64
	Encode([]byte) ([]byte, error)
}

type Visitor 

type Visitor interface {
	Visit(node SchemaNode) (w Visitor)
}

type VisitorFn 

type VisitorFn func(node SchemaNode) bool

func (VisitorFn) Visit 

func (fn VisitorFn) Visit(node SchemaNode) (w Visitor)

Source Files

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