imds

Documentation

Overview

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

Index

• Variables
• type ErrMetadata
  • func (e ErrMetadata) Error() string
• type Source
  • func New(imdsClient *imds.Client) *Source
  • func (i Source) ClearCache()
  • func (i Source) Find(search string, firstOccurrence bool) (time.Time, error)
  • func (i Source) Name() string
  • func (i Source) String() string

Variables

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

Types

type ErrMetadata

type ErrMetadata struct{}

func (ErrMetadata) Error

func (e ErrMetadata) Error() string

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(search string, firstOccurrence bool) (time.Time, error)

Find queries the EC2 Instance Metadata Service (IMDS) for the search path and expects to find a time. The only supported paths currently are "/dynamic/instance-identity/document/pendingTime" and "/dynamic/instance-identity/document/requestedTime"

func (Source) Name

func (i Source) Name() string

Name is the name of the source

func (Source) String

func (i Source) String() string