utils

Documentation

Index

• Constants
• Variables
• func DockerInitPath(localCopy string) string
• func ExperimentalBuild() bool
• func GetCallerName(depth int) string
• func GetErrorMessage(err error) string
• func ReplaceOrAppendEnvValues(defaults, overrides []string) []string
• func SelfPath() string
• func TestDirectory(templateDir string) (dir string, err error)

Constants

const RestrictedNameChars = `[a-zA-Z0-9][a-zA-Z0-9_.-]`

RestrictedNameChars collects the characters allowed to represent a name, normally used to validate container and volume names.

Variables

var RestrictedNamePattern = regexp.MustCompile(`^/?` + RestrictedNameChars + `+$`)

RestrictedNamePattern is a regular expression to validate names against the collection of restricted characters.

var RestrictedVolumeNamePattern = regexp.MustCompile(`^` + RestrictedNameChars + `+$`)

RestrictedVolumeNamePattern is a regular expression to validate volume names against the collection of restricted characters.

Functions

func DockerInitPath

func DockerInitPath(localCopy string) string

DockerInitPath figures out the path of our dockerinit (which may be SelfPath())

func ExperimentalBuild

func ExperimentalBuild() bool

ExperimentalBuild is a stub which always returns false for builds that do not include the "experimental" build tag

func GetCallerName

func GetCallerName(depth int) string

GetCallerName introspects the call stack and returns the name of the function `depth` levels down in the stack.

func GetErrorMessage

func GetErrorMessage(err error) string

GetErrorMessage returns the human readable message associated with the passed-in error. In some cases the default Error() func returns something that is less than useful so based on its types this func will go and get a better piece of text.

func ReplaceOrAppendEnvValues

func ReplaceOrAppendEnvValues(defaults, overrides []string) []string

ReplaceOrAppendEnvValues returns the defaults with the overrides either replaced by env key or appended to the list

func SelfPath

func SelfPath() string

SelfPath figures out the absolute path of our own binary (if it's still around).

func TestDirectory

func TestDirectory(templateDir string) (dir string, err error)

TestDirectory creates a new temporary directory and returns its path. The contents of directory at path `templateDir` is copied into the new directory.