intrinsics

Documentation

Index

• func ProcessYAML(input []byte, options *ProcessorOptions) ([]byte, error)
• type IntrinsicHandler
• type ProcessorOptions

Functions

func ProcessYAML

func ProcessYAML(input []byte, options *ProcessorOptions) ([]byte, error)

ProcessYAML recursively searches through a byte array of JSON data for all AWS CloudFormation intrinsic functions, resolves them, and then returns the resulting interface{} object.

Types

type IntrinsicHandler

type IntrinsicHandler func(string, interface{}, interface{}) interface{}

IntrinsicHandler is a function that applies an intrinsic function and returns the response that should be placed in it's place. An intrinsic handler function is passed the name of the intrinsic function (e.g. Fn::Join), and the object to apply it to (as an interface{}), and should return the resolved object (as an interface{}).

type ProcessorOptions

type ProcessorOptions struct {
	IntrinsicHandlerOverrides map[string]IntrinsicHandler
	ParameterOverrides        map[string]interface{}
	NoProcess                 bool
	ProcessOnlyGlobals        bool
	EvaluateConditions        bool
}

ProcessorOptions allows customisation of the intrinsic function processor behaviour. This allows disabling the processing of intrinsics, overriding of the handlers for each intrinsic function type, and overriding template parameters.