Documentation ¶
Index ¶
Constants ¶
const ( // PlusType adds datapoints in both series. PlusType = "+" // MinusType subtracts rhs from lhs. MinusType = "-" // MultiplyType multiplies datapoints by series. MultiplyType = "*" // DivType divides datapoints by series. // Special cases are: // X / 0 = +Inf // -X / 0 = -Inf // 0 / 0 = NaN DivType = "/" // ExpType raises lhs to the power of rhs. // NB: to keep consistency with prometheus (and go) // 0 ^ 0 = 1 // NaN ^ 0 = 1 ExpType = "^" // ModType takes the modulo of lhs by rhs. // Special cases are: // X % 0 = NaN // NaN % X = NaN // X % NaN = NaN ModType = "%" )
const ( // EqType checks that lhs is equal to rhs. EqType = "==" // NotEqType checks that lhs is equal to rhs. NotEqType = "!=" // GreaterType checks that lhs is equal to rhs. GreaterType = ">" // LesserType checks that lhs is equal to rhs. LesserType = "<" // GreaterEqType checks that lhs is equal to rhs. GreaterEqType = ">=" // LesserEqType checks that lhs is equal to rhs. LesserEqType = "<=" )
const AndType = "and"
AndType uses values from left hand side for which there is a value in right hand side with exactly matching label sets. Other elements are replaced by NaNs. The metric name and values are carried over from the left-hand side.
const OrType = "or"
OrType uses all values from left hand side, and appends values from the right hand side which do not have corresponding tags on the right.
const UnlessType = "unless"
UnlessType uses all values from lhs which do not exist in rhs
Variables ¶
This section is empty.
Functions ¶
func ArithmeticFunction ¶ added in v0.4.6
ArithmeticFunction returns the arithmetic function for this operation type.
Types ¶
type NodeParams ¶
type NodeParams struct {
LNode, RNode parser.NodeID
ReturnBool bool
VectorMatcherBuilder VectorMatcherBuilder
}
NodeParams describes the types of nodes used for binary operations.
type VectorMatchCardinality ¶ added in v0.4.2
type VectorMatchCardinality int
VectorMatchCardinality describes the cardinality relationship of two Vectors in a binary operation.
const ( // CardOneToOne is used for one-one relationship CardOneToOne VectorMatchCardinality = iota // CardManyToOne is used for many-one relationship CardManyToOne // CardOneToMany is used for one-many relationship CardOneToMany // CardManyToMany is used for many-many relationship CardManyToMany )
type VectorMatcherBuilder ¶ added in v0.11.0
type VectorMatcherBuilder func(lhs, rhs block.Block) VectorMatching
VectorMatcherBuilder creates a vector matcher based on incoming block types.
type VectorMatching ¶ added in v0.4.2
type VectorMatching struct { // Set determines if this has been set or is using default values. Set bool // Card is the cardinality of the two Vectors. Card VectorMatchCardinality // MatchingLabels contains the labels which define equality of a pair of // elements from the Vectors. MatchingLabels [][]byte // On includes the given label names from matching, // rather than excluding them. On bool // Include contains additional labels that should be included in // the result from the side with the lower cardinality. Include []string }
VectorMatching describes how elements from two Vectors in a binary operation are supposed to be matched.