promql

Documentation

Index

• func NewAggregationOperator(expr *promql.AggregateExpr) (parser.Params, error)
• func NewBinaryOperator(expr *promql.BinaryExpr, lhs, rhs parser.NodeID) (parser.Params, error)
• func NewFunctionExpr(name string, argValues []interface{}) (parser.Params, error)
• func NewScalarOperator(expr *promql.NumberLiteral) parser.Params
• func NewSelectorFromMatrix(n *promql.MatrixSelector) (parser.Params, error)
• func NewSelectorFromVector(n *promql.VectorSelector) (parser.Params, error)
• func Parse(q string) (parser.Parser, error)
• type ItemType

Functions

func NewAggregationOperator

func NewAggregationOperator(expr *promql.AggregateExpr) (parser.Params, error)

NewAggregationOperator creates a new aggregation operator based on the type

func NewBinaryOperator

func NewBinaryOperator(expr *promql.BinaryExpr, lhs, rhs parser.NodeID) (parser.Params, error)

NewBinaryOperator creates a new binary operator based on the type

func NewFunctionExpr

func NewFunctionExpr(name string, argValues []interface{}) (parser.Params, error)

NewFunctionExpr creates a new function expr based on the type

func NewScalarOperator

func NewScalarOperator(expr *promql.NumberLiteral) parser.Params

NewScalarOperator creates a new scalar operator

func NewSelectorFromMatrix

func NewSelectorFromMatrix(n *promql.MatrixSelector) (parser.Params, error)

NewSelectorFromMatrix creates a new fetchop

func NewSelectorFromVector

func NewSelectorFromVector(n *promql.VectorSelector) (parser.Params, error)

NewSelectorFromVector creates a new fetchop

func Parse

func Parse(q string) (parser.Parser, error)

Parse takes a promQL string and converts parses it into a DAG

Types

type ItemType

type ItemType int

ItemType which maps to ItemType in Prometheus. Note that this is temporary and once we decide we want to use this approach then we will just expose the item types in Prometheus code base