expr

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Versions in this module

v0

v0.13.1

Nov 28, 2019

Changes in this version

+ type ArgQuotelessString struct

+ func (a ArgQuotelessString) Key() string

+ func (a ArgQuotelessString) Optional() bool

type ErrBadArgument

+ func (e ErrBadArgument) Code() int

type ErrBadArgumentStr

+ func (e ErrBadArgumentStr) Code() int

type ErrBadKwarg

+ func (e ErrBadKwarg) Code() int

type ErrKwargSpecifiedTwice

+ func (e ErrKwargSpecifiedTwice) Code() int

type ErrUnknownFunction

+ func (e ErrUnknownFunction) Code() int

type ErrUnknownKwarg

+ func (e ErrUnknownKwarg) Code() int

v0.13.0

Sep 17, 2019

Changes in this version

+ type FuncFallbackSeries struct

+ func (s *FuncFallbackSeries) Context(context Context) Context

+ func (s *FuncFallbackSeries) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncFallbackSeries) Signature() ([]Arg, []Arg)

+ type FuncGroup struct

+ func (s *FuncGroup) Context(context Context) Context

+ func (s *FuncGroup) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncGroup) Signature() ([]Arg, []Arg)

+ type FuncIntegral struct

+ func (s *FuncIntegral) Context(context Context) Context

+ func (s *FuncIntegral) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncIntegral) Signature() ([]Arg, []Arg)

type GraphiteFunc

+ func NewFallbackSeries() GraphiteFunc

+ func NewGroup() GraphiteFunc

+ func NewIntegral() GraphiteFunc

v0.12.0

May 14, 2019

Changes in this version

+ func NewConsolidateByConstructor(by string) func() GraphiteFunc

+ func NewFilterSeriesConstructor(fn string, operator string) func() GraphiteFunc

+ type FuncAbsolute struct

+ func (s *FuncAbsolute) Context(context Context) Context

+ func (s *FuncAbsolute) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAbsolute) Signature() ([]Arg, []Arg)

type GraphiteFunc

+ func NewAbsolute() GraphiteFunc

v0.11.0

Dec 19, 2018

Changes in this version

+ var ErrIllegalCharacter = errors.New("illegal character for function name")

+ var ErrIntPositive = errors.New("integer must be positive")

+ var ErrInvalidAggFunc = errors.New("Invalid aggregation func")

+ var ErrMissingArg = errors.New("argument missing")

+ var ErrMissingComma = errors.New("missing comma")

+ var ErrMissingExpr = errors.New("missing expression")

+ var ErrMissingQuote = errors.New("missing quote")

+ var ErrMissingTimeseries = errors.New("missing time series argument")

+ var ErrNonNegativePercent = errors.New("The requested percent is required to be greater than 0")

+ var ErrTooManyArg = errors.New("too many arguments")

+ var ErrUnexpectedCharacter = errors.New("unexpected character")

+ var ErrWildcardNotAllowed = errors.New("found wildcard where series expected")

+ func IntPositive(e *expr) error

+ func IsAggFunc(e *expr) error

+ func IsConsolFunc(e *expr) error

+ func IsIntervalString(e *expr) error

+ func IsOperator(e *expr) error

+ func NewAggregateConstructor(aggDescription string, aggFunc crossSeriesAggFunc) func() GraphiteFunc

+ func NewHighestLowestConstructor(fn string, highest bool) func() GraphiteFunc

+ func NewRemoveAboveBelowPercentileConstructor(above bool) func() GraphiteFunc

+ func NewRemoveAboveBelowValueConstructor(above bool) func() GraphiteFunc

+ func NewSortByConstructor(fn string, reverse bool) func() GraphiteFunc

+ func NonNegativePercent(e *expr) error

+ func Parse(e string) (*expr, string, error)

+ func ParseMany(targets []string) ([]*expr, error)

+ func Pool(p *sync.Pool)

+ func SortSeriesWithConsolidator(series []models.Series, c consolidation.Consolidator, reverse bool)

+ type Arg interface

+ Key func() string

+ Optional func() bool

+ type ArgBool struct

+ func (a ArgBool) Key() string

+ func (a ArgBool) Optional() bool

+ type ArgFloat struct

+ func (a ArgFloat) Key() string

+ func (a ArgFloat) Optional() bool

+ type ArgIn struct

+ func (a ArgIn) Key() string

+ func (a ArgIn) Optional() bool

+ type ArgInt struct

+ func (a ArgInt) Key() string

+ func (a ArgInt) Optional() bool

+ type ArgInts struct

+ func (a ArgInts) Key() string

+ func (a ArgInts) Optional() bool

+ type ArgRegex struct

+ func (a ArgRegex) Key() string

+ func (a ArgRegex) Optional() bool

+ type ArgSeries struct

+ func (a ArgSeries) Key() string

+ func (a ArgSeries) Optional() bool

+ type ArgSeriesList struct

+ func (a ArgSeriesList) Key() string

+ func (a ArgSeriesList) Optional() bool

+ type ArgSeriesLists struct

+ func (a ArgSeriesLists) Key() string

+ func (a ArgSeriesLists) Optional() bool

+ type ArgString struct

+ func (a ArgString) Key() string

+ func (a ArgString) Optional() bool

+ type ArgStrings struct

+ func (a ArgStrings) Key() string

+ func (a ArgStrings) Optional() bool

+ type ArgStringsOrInts struct

+ func (a ArgStringsOrInts) Key() string

+ func (a ArgStringsOrInts) Optional() bool

+ type Context struct

+ type ErrBadArgument struct

+ func (e ErrBadArgument) Error() string

+ type ErrBadArgumentStr struct

+ func (e ErrBadArgumentStr) Error() string

+ type ErrBadKwarg struct

+ func (e ErrBadKwarg) Error() string

+ type ErrKwargSpecifiedTwice struct

+ func (e ErrKwargSpecifiedTwice) Error() string

+ type ErrUnknownFunction string

+ func (e ErrUnknownFunction) Error() string

+ type ErrUnknownKwarg struct

+ func (e ErrUnknownKwarg) Error() string

+ type FuncAggregate struct

+ func (s *FuncAggregate) Context(context Context) Context

+ func (s *FuncAggregate) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAggregate) Signature() ([]Arg, []Arg)

+ type FuncAlias struct

+ func (s *FuncAlias) Context(context Context) Context

+ func (s *FuncAlias) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAlias) Signature() ([]Arg, []Arg)

+ type FuncAliasByNode struct

+ func (s *FuncAliasByNode) Context(context Context) Context

+ func (s *FuncAliasByNode) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAliasByNode) Signature() ([]Arg, []Arg)

+ type FuncAliasSub struct

+ func (s *FuncAliasSub) Context(context Context) Context

+ func (s *FuncAliasSub) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAliasSub) Signature() ([]Arg, []Arg)

+ type FuncAsPercent struct

+ func (s *FuncAsPercent) Context(context Context) Context

+ func (s *FuncAsPercent) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncAsPercent) Signature() ([]Arg, []Arg)

+ type FuncConsolidateBy struct

+ func (s *FuncConsolidateBy) Context(context Context) Context

+ func (s *FuncConsolidateBy) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncConsolidateBy) Signature() ([]Arg, []Arg)

+ type FuncCountSeries struct

+ func (s *FuncCountSeries) Context(context Context) Context

+ func (s *FuncCountSeries) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncCountSeries) Signature() ([]Arg, []Arg)

+ type FuncDerivative struct

+ func (s *FuncDerivative) Context(context Context) Context

+ func (s *FuncDerivative) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncDerivative) Signature() ([]Arg, []Arg)

+ type FuncDivideSeries struct

+ func (s *FuncDivideSeries) Context(context Context) Context

+ func (s *FuncDivideSeries) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncDivideSeries) Signature() ([]Arg, []Arg)

+ type FuncDivideSeriesLists struct

+ func (s *FuncDivideSeriesLists) Context(context Context) Context

+ func (s *FuncDivideSeriesLists) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncDivideSeriesLists) Signature() ([]Arg, []Arg)

+ type FuncFilterSeries struct

+ func (s *FuncFilterSeries) Context(context Context) Context

+ func (s *FuncFilterSeries) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncFilterSeries) Signature() ([]Arg, []Arg)

+ type FuncGet struct

+ func (s FuncGet) Context(context Context) Context

+ func (s FuncGet) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s FuncGet) Signature() ([]Arg, []Arg)

+ type FuncGrep struct

+ func (s *FuncGrep) Context(context Context) Context

+ func (s *FuncGrep) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncGrep) Signature() ([]Arg, []Arg)

+ type FuncGroupByTags struct

+ func (s *FuncGroupByTags) Context(context Context) Context

+ func (s *FuncGroupByTags) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncGroupByTags) Signature() ([]Arg, []Arg)

+ type FuncHighestLowest struct

+ func (s *FuncHighestLowest) Context(context Context) Context

+ func (s *FuncHighestLowest) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncHighestLowest) Signature() ([]Arg, []Arg)

+ type FuncIsNonNull struct

+ func (s *FuncIsNonNull) Context(context Context) Context

+ func (s *FuncIsNonNull) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncIsNonNull) Signature() ([]Arg, []Arg)

+ type FuncKeepLastValue struct

+ func (s *FuncKeepLastValue) Context(context Context) Context

+ func (s *FuncKeepLastValue) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncKeepLastValue) Signature() ([]Arg, []Arg)

+ type FuncMovingAverage struct

+ func (s *FuncMovingAverage) Context(context Context) Context

+ func (s *FuncMovingAverage) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncMovingAverage) Signature() ([]Arg, []Arg)

+ type FuncNonNegativeDerivative struct

+ func (s *FuncNonNegativeDerivative) Context(context Context) Context

+ func (s *FuncNonNegativeDerivative) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncNonNegativeDerivative) Signature() ([]Arg, []Arg)

+ type FuncPerSecond struct

+ func (s *FuncPerSecond) Context(context Context) Context

+ func (s *FuncPerSecond) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncPerSecond) Signature() ([]Arg, []Arg)

+ type FuncRemoveAboveBelowPercentile struct

+ func (s *FuncRemoveAboveBelowPercentile) Context(context Context) Context

+ func (s *FuncRemoveAboveBelowPercentile) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncRemoveAboveBelowPercentile) Signature() ([]Arg, []Arg)

+ type FuncRemoveAboveBelowValue struct

+ func (s *FuncRemoveAboveBelowValue) Context(context Context) Context

+ func (s *FuncRemoveAboveBelowValue) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncRemoveAboveBelowValue) Signature() ([]Arg, []Arg)

+ type FuncScale struct

+ func (s *FuncScale) Context(context Context) Context

+ func (s *FuncScale) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncScale) Signature() ([]Arg, []Arg)

+ type FuncScaleToSeconds struct

+ func (s *FuncScaleToSeconds) Context(context Context) Context

+ func (s *FuncScaleToSeconds) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncScaleToSeconds) Signature() ([]Arg, []Arg)

+ type FuncSmartSummarize struct

+ func (s *FuncSmartSummarize) Context(context Context) Context

+ func (s *FuncSmartSummarize) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncSmartSummarize) Signature() ([]Arg, []Arg)

+ type FuncSortBy struct

+ func (s *FuncSortBy) Context(context Context) Context

+ func (s *FuncSortBy) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncSortBy) Signature() ([]Arg, []Arg)

+ type FuncSortByName struct

+ func (s *FuncSortByName) Context(context Context) Context

+ func (s *FuncSortByName) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncSortByName) Signature() ([]Arg, []Arg)

+ type FuncSummarize struct

+ func (s *FuncSummarize) Context(context Context) Context

+ func (s *FuncSummarize) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncSummarize) Signature() ([]Arg, []Arg)

+ type FuncTransformNull struct

+ func (s *FuncTransformNull) Context(context Context) Context

+ func (s *FuncTransformNull) Exec(cache map[Req][]models.Series) ([]models.Series, error)

+ func (s *FuncTransformNull) Signature() ([]Arg, []Arg)

+ type GraphiteFunc interface

+ Context func(c Context) Context

+ Exec func(map[Req][]models.Series) ([]models.Series, error)

+ Signature func() ([]Arg, []Arg)

+ func NewAlias() GraphiteFunc

+ func NewAliasByNode() GraphiteFunc

+ func NewAliasSub() GraphiteFunc

+ func NewAsPercent() GraphiteFunc

+ func NewConsolidateBy() GraphiteFunc

+ func NewCountSeries() GraphiteFunc

+ func NewDerivative() GraphiteFunc

+ func NewDivideSeries() GraphiteFunc

+ func NewDivideSeriesLists() GraphiteFunc

+ func NewExclude() GraphiteFunc

+ func NewFilterSeries() GraphiteFunc

+ func NewGet(req Req) GraphiteFunc

+ func NewGrep() GraphiteFunc

+ func NewGroupByTags() GraphiteFunc

+ func NewIsNonNull() GraphiteFunc

+ func NewKeepLastValue() GraphiteFunc

+ func NewMovingAverage() GraphiteFunc

+ func NewNonNegativeDerivative() GraphiteFunc

+ func NewPerSecond() GraphiteFunc

+ func NewScale() GraphiteFunc

+ func NewScaleToSeconds() GraphiteFunc

+ func NewSmartSummarize() GraphiteFunc

+ func NewSortByName() GraphiteFunc

+ func NewSummarize() GraphiteFunc

+ func NewTransformNull() GraphiteFunc

+ type MetricRequest struct

+ From int32

+ Metric string

+ Until int32

+ type Plan struct

+ From uint32

+ MaxDataPoints uint32

+ Reqs []Req

+ To uint32

+ func NewPlan(exprs []*expr, from, to, mdp uint32, stable bool, reqs []Req) (Plan, error)

+ func (p Plan) Clean()

+ func (p Plan) Dump(w io.Writer)

+ func (p Plan) Run(input map[Req][]models.Series) ([]models.Series, error)

+ type Req struct

+ Cons consolidation.Consolidator

+ From uint32

+ Query string

+ To uint32

+ func NewReq(query string, from, to uint32, cons consolidation.Consolidator) Req

+ type ScoredSeries struct

+ type Validator func(e *expr) error

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