constraint

Documentation

Overview

Package constraint implements support for predicates on agent attributes. Constraints notably implement a MergeParent operation, to implement override behavior in child Roles.

Index

• type Attributes
  • func (attrs Attributes) Get(attributeName string) (value string, ok bool)
  • func (attrs Attributes) Satisfy(cts Constraints) (ok bool)
  • func (attrs Attributes) String() string
• type Constraint
  • func (c *Constraint) String() string
• type Constraints
  • func (cts Constraints) MergeParent(parentConstraints Constraints) (merged Constraints)
  • func (cts Constraints) String() string
• type Operator
  • func (o Operator) String() string

Types

type Attributes

type Attributes []mesos.Attribute

func (Attributes) Get

func (attrs Attributes) Get(attributeName string) (value string, ok bool)

func (Attributes) Satisfy

func (attrs Attributes) Satisfy(cts Constraints) (ok bool)

func (Attributes) String

func (attrs Attributes) String() string

type Constraint

type Constraint struct {
	Attribute string `yaml:"attribute"`
	Value     string `yaml:"value"`
	// TODO: unmarshal this ↓
	Operator Operator
}

func (*Constraint) String

func (c *Constraint) String() string

type Constraints

type Constraints []Constraint

func (Constraints) MergeParent

func (cts Constraints) MergeParent(parentConstraints Constraints) (merged Constraints)

func (Constraints) String

func (cts Constraints) String() string

type Operator

type Operator int8

const (
	Equals Operator = 0
)

func (Operator) String

func (o Operator) String() string