condition

package
v0.16.1 Latest Latest
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 Go to latest Published: Jul 9, 2018 License: MIT Imports: 13 Imported by: 0

Documentation

Overview

Package condition contains logical operators that, based on their configuration, return boolean values from messages under certain circumstances.

Index

Constants

This section is empty.

Variables

View Source 
var Constructors = map[string]TypeSpec{}

Constructors is a map of all condition types with their specs.

View Source 
var (
	ErrInvalidContentOperator = errors.New("invalid content operator type")
)

Errors for the content condition.

Functions

func Descriptions 

func Descriptions() string

Descriptions returns a formatted string of collated descriptions of each type.

func SanitiseConfig 

func SanitiseConfig(conf Config) (interface{}, error)

SanitiseConfig returns a sanitised version of the Config, meaning sections that aren't relevant to behaviour are removed.

Types

type And added in v0.9.4 

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

And is a condition that returns the logical AND of all children.

func (*And) Check added in v0.9.4 

func (c *And) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type AndConfig added in v0.9.4 

type AndConfig []Config

AndConfig is a configuration struct containing fields for the And condition.

func NewAndConfig added in v0.9.4 

func NewAndConfig() AndConfig

NewAndConfig returns a AndConfig with default values.

type Config 

type Config struct {
	Type     string         `json:"type" yaml:"type"`
	And      AndConfig      `json:"and" yaml:"and"`
	Content  ContentConfig  `json:"content" yaml:"content"`
	Count    CountConfig    `json:"count" yaml:"count"`
	JMESPath JMESPathConfig `json:"jmespath" yaml:"jmespath"`
	Not      NotConfig      `json:"not" yaml:"not"`
	Or       OrConfig       `json:"or" yaml:"or"`
	Resource string         `json:"resource" yaml:"resource"`
	Static   bool           `json:"static" yaml:"static"`
	Xor      XorConfig      `json:"xor" yaml:"xor"`
}

Config is the all encompassing configuration struct for all condition types.

func NewConfig 

func NewConfig() Config

NewConfig returns a configuration struct fully populated with default values.

func (*Config) UnmarshalJSON 

func (m *Config) UnmarshalJSON(bytes []byte) error

UnmarshalJSON ensures that when parsing configs that are in a slice the default values are still applied.

func (*Config) UnmarshalYAML 

func (m *Config) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML ensures that when parsing configs that are in a slice the default values are still applied.

type Content added in v0.9.4 

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

Content is a condition that checks message content against logical operators.

func (*Content) Check added in v0.9.4 

func (c *Content) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type ContentConfig added in v0.9.4 

type ContentConfig struct {
	Operator string `json:"operator" yaml:"operator"`
	Part     int    `json:"part" yaml:"part"`
	Arg      string `json:"arg" yaml:"arg"`
}

ContentConfig is a configuration struct containing fields for the content condition.

func NewContentConfig added in v0.9.4 

func NewContentConfig() ContentConfig

NewContentConfig returns a ContentConfig with default values.

type Count added in v0.11.2 

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

Count is a condition that returns the logical or of all children.

func (*Count) Check added in v0.11.2 

func (c *Count) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type CountConfig added in v0.11.2 

type CountConfig struct {
	Arg int `json:"arg" yaml:"arg"`
}

CountConfig is a configuration struct containing fields for the Count condition.

func NewCountConfig added in v0.11.2 

func NewCountConfig() CountConfig

NewCountConfig returns a CountConfig with default values.

type JMESPath added in v0.9.8 

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

JMESPath is a condition that checks message against a jmespath query.

func (*JMESPath) Check added in v0.9.8 

func (c *JMESPath) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type JMESPathConfig added in v0.9.8 

type JMESPathConfig struct {
	Part  int    `json:"part" yaml:"part"`
	Query string `json:"query" yaml:"query"`
}

JMESPathConfig is a configuration struct containing fields for the jmespath condition.

func NewJMESPathConfig added in v0.9.8 

func NewJMESPathConfig() JMESPathConfig

NewJMESPathConfig returns a JMESPathConfig with default values.

type Not added in v0.9.4 

type Not struct {
	// contains filtered or unexported fields
}

Not is a condition that returns the opposite of another condition.

func (*Not) Check added in v0.9.4 

func (c *Not) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type NotConfig added in v0.9.4 

type NotConfig struct {
	*Config
}

NotConfig is a configuration struct containing fields for the Not condition.

func NewNotConfig added in v0.9.4 

func NewNotConfig() NotConfig

NewNotConfig returns a NotConfig with default values.

func (NotConfig) MarshalJSON added in v0.9.4 

func (m NotConfig) MarshalJSON() ([]byte, error)

MarshalJSON prints an empty object instead of nil.

func (NotConfig) MarshalYAML added in v0.9.4 

func (m NotConfig) MarshalYAML() (interface{}, error)

MarshalYAML prints an empty object instead of nil.

func (*NotConfig) UnmarshalJSON added in v0.9.4 

func (m *NotConfig) UnmarshalJSON(bytes []byte) error

UnmarshalJSON ensures that when parsing child config it is initialised.

func (*NotConfig) UnmarshalYAML added in v0.9.4 

func (m *NotConfig) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML ensures that when parsing child config it is initialised.

type Or added in v0.9.4 

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

Or is a condition that returns the logical or of all children.

func (*Or) Check added in v0.9.4 

func (c *Or) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type OrConfig added in v0.9.4 

type OrConfig []Config

OrConfig is a configuration struct containing fields for the Or condition.

func NewOrConfig added in v0.9.4 

func NewOrConfig() OrConfig

NewOrConfig returns a OrConfig with default values.

type Resource added in v0.9.7 

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

Resource is a condition that returns the result of a condition resource.

func (*Resource) Check added in v0.9.7 

func (c *Resource) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type Static added in v0.11.6 

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

Static is a condition that always returns a static boolean value.

func (*Static) Check added in v0.11.6 

func (s *Static) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type Type 

type Type interface {
	// Check tests a message against a configured condition.
	Check(msg types.Message) bool
}

Type reads a message, calculates a condition and returns a boolean.

func New 

func New(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

New creates a condition type based on a condition configuration.

func NewAnd added in v0.9.4 

func NewAnd(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewAnd returns an And processor.

func NewContent added in v0.9.4 

func NewContent(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewContent returns a Content processor.

func NewCount added in v0.11.2 

func NewCount(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewCount returns an Count processor.

func NewJMESPath added in v0.9.8 

func NewJMESPath(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewJMESPath returns a JMESPath processor.

func NewNot added in v0.9.4 

func NewNot(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewNot returns a Not processor.

func NewOr added in v0.9.4 

func NewOr(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewOr returns an Or processor.

func NewResource added in v0.9.7 

func NewResource(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewResource returns a resource processor.

func NewStatic added in v0.11.6 

func NewStatic(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewStatic returns a Static processor.

func NewXor added in v0.9.8 

func NewXor(
	conf Config, mgr types.Manager, log log.Modular, stats metrics.Type,
) (Type, error)

NewXor returns an Xor processor.

type TypeSpec 

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

TypeSpec Constructor and a usage description for each condition type.

type Xor added in v0.9.8 

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

Xor is a condition that returns the logical xor of all children.

func (*Xor) Check added in v0.9.8 

func (c *Xor) Check(msg types.Message) bool

Check attempts to check a message part against a configured condition.

type XorConfig added in v0.9.8 

type XorConfig []Config

XorConfig is a configuration struct containing fields for the Xor condition.

func NewXorConfig added in v0.9.8 

func NewXorConfig() XorConfig

NewXorConfig returns a XorConfig with default values.

Source Files

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