imds

Documentation

Overview

Package imds is a latency timing source for the EC2 Instance Metadata Service (IMDS)

Index

• Variables
• type Source
  • func New(imdsClient *imds.Client) *Source
  • func (i Source) ClearCache()
  • func (i Source) Find(event *sources.Event) ([]sources.FindResult, error)
  • func (i Source) FindByPath(path string) sources.FindFunc
  • func (i Source) GetMetadata(path string) (string, error)
  • func (i Source) Name() string
  • func (i Source) String() string

Variables

var (
	Name             = "EC2 IMDS"
	DynamicDocPrefix = "/dynamic/instance-identity/document"
	PendingTime      = fmt.Sprintf("%s/%s", DynamicDocPrefix, "pendingTime")
)

Types

type Source

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

Source is the EC2 Instance Metadata Service (IMDS) http source

func New

func New(imdsClient *imds.Client) *Source

New instantiates a new instance of the IMDS source

func (Source) ClearCache

func (i Source) ClearCache()

ClearCache is a noop for the IMDS Source since it is an http source, not a log file

func (Source) Find

func (i Source) Find(event *sources.Event) ([]sources.FindResult, error)

Find will use the Event's FindFunc and CommentFunc to search the source and return the result

func (Source) FindByPath

func (i Source) FindByPath(path string) sources.FindFunc

FindByPath is a helper func that returns a FindFunc to query IMDS for a specific HTTP path that can be used in an Event

func (Source) GetMetadata

func (i Source) GetMetadata(path string) (string, error)

GetMetadata queries EC2 IMDS

func (Source) Name

func (i Source) Name() string

Name is the name of the source

func (Source) String

func (i Source) String() string

String is a human readable string of the source