utils

package
v1.4.2-0...-e6b7d93 Latest Latest
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 Go to latest Published: Mar 24, 2015 License: Apache-2.0 Imports: 31 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CopyEscapable 

func CopyEscapable(dst io.Writer, src io.ReadCloser) (written int64, err error)

Code c/c from io.Copy() modified to handle escape sequence

func CopyFile 

func CopyFile(src, dst string) (int64, error)

func CreatePidFile 

func CreatePidFile(pidfile string) error

func DigestReference 

func DigestReference(ref string) bool

DigestReference returns true if ref is a digest reference; i.e. if it is of the form <algorithm>:<digest>.

func DisplayJSONMessagesStream 

func DisplayJSONMessagesStream(in io.Reader, out io.Writer, terminalFd uintptr, isTerminal bool) error

func DockerInitPath 

func DockerInitPath(localCopy string) string

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

func DoesEnvExist 

func DoesEnvExist(name string) bool

func Download 

func Download(url string) (resp *http.Response, err error)

Request a given URL and return an io.Reader

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 GetTotalUsedFds 

func GetTotalUsedFds() int

func HashData 

func HashData(src io.Reader) (string, error)

func ImageReference 

func ImageReference(repo, ref string) string

ImageReference combines `repo` and `ref` and returns a string representing the combination. If `ref` is a digest (meaning it's of the form <algorithm>:<digest>, the returned string is <repo>@<ref>. Otherwise, ref is assumed to be a tag, and the returned string is <repo>:<tag>.

func NewHTTPRequestError 

func NewHTTPRequestError(msg string, res *http.Response) error

func ParseFlags 

func ParseFlags(cmd *flag.FlagSet, args []string, withHelp bool) error

ParseFlags is a utility function that adds a help flag if withHelp is true, calls cmd.Parse(args) and prints a relevant error message if there are incorrect number of arguments. It returns error only if error handling is set to ContinueOnError and parsing fails. If error handling is set to ExitOnError, it's safe to ignore the return value. TODO: move this to a better package than utils

func ReadDockerIgnore 

func ReadDockerIgnore(path string) ([]string, error)

Reads a .dockerignore file and returns the list of file patterns to ignore. Note this will trim whitespace from each line as well as use GO's "clean" func to get the shortest/cleanest path for each.

func ReadSymlinkedDirectory 

func ReadSymlinkedDirectory(path string) (string, error)

ReadSymlinkedDirectory returns the target directory of a symlink. The target of the symbolic link may not be a file.

func RemovePidFile 

func RemovePidFile(pidfile string)

func ReplaceOrAppendEnvValues 

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

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

func ReportError 

func ReportError(cmd *flag.FlagSet, str string, withHelp bool)

func SelfPath 

func SelfPath() string

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

func ShellQuoteArguments 

func ShellQuoteArguments(args []string) string

Take a list of strings and escape them so they will be handled right when passed as arguments to an program via a shell

func StringsContainsNoCase 

func StringsContainsNoCase(slice []string, s string) bool

func TempDir 

func TempDir(rootDir string) (string, error)

TempDir returns the default directory to use for temporary files.

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.

func Trunc 

func Trunc(s string, maxlen int) string

func ValidateContextDirectory 

func ValidateContextDirectory(srcPath string, excludes []string) error

ValidateContextDirectory checks if all the contents of the directory can be read and returns an error if some files can't be read symlinks which point to non-existing files don't trigger an error

func ValidateID 

func ValidateID(id string) error

Types

type HTTPAuthDecorator 

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

func (*HTTPAuthDecorator) ChangeRequest 

func (self *HTTPAuthDecorator) ChangeRequest(req *http.Request) (*http.Request, error)

type HTTPMetaHeadersDecorator 

type HTTPMetaHeadersDecorator struct {
	Headers map[string][]string
}

func (*HTTPMetaHeadersDecorator) ChangeRequest 

func (h *HTTPMetaHeadersDecorator) ChangeRequest(req *http.Request) (newReq *http.Request, err error)

type HTTPRequestDecorator 

type HTTPRequestDecorator interface {
	// ChangeRequest() changes the request accordingly.
	// The changed request will be returned or err will be non-nil
	// if an error occur.
	ChangeRequest(req *http.Request) (newReq *http.Request, err error)
}

HTTPRequestDecorator is used to change an instance of http.Request. It could be used to add more header fields, change body, etc.

func NewHTTPAuthDecorator 

func NewHTTPAuthDecorator(login, password string) HTTPRequestDecorator

func NewHTTPUserAgentDecorator 

func NewHTTPUserAgentDecorator(versions ...VersionInfo) HTTPRequestDecorator

type HTTPRequestFactory 

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

HTTPRequestFactory creates an HTTP request and applies a list of decorators on the request.

func NewHTTPRequestFactory 

func NewHTTPRequestFactory(d ...HTTPRequestDecorator) *HTTPRequestFactory

func (*HTTPRequestFactory) AddDecorator 

func (self *HTTPRequestFactory) AddDecorator(d ...HTTPRequestDecorator)

func (*HTTPRequestFactory) GetDecorators 

func (self *HTTPRequestFactory) GetDecorators() []HTTPRequestDecorator

func (*HTTPRequestFactory) NewRequest 

func (h *HTTPRequestFactory) NewRequest(method, urlStr string, body io.Reader, d ...HTTPRequestDecorator) (*http.Request, error)

NewRequest() creates a new *http.Request, applies all decorators in the HTTPRequestFactory on the request, then applies decorators provided by d on the request.

type HTTPUserAgentDecorator 

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

HTTPUserAgentDecorator appends the product/version to the user agent field of a request.

func (*HTTPUserAgentDecorator) ChangeRequest 

func (h *HTTPUserAgentDecorator) ChangeRequest(req *http.Request) (newReq *http.Request, err error)

type JSONError 

type JSONError struct {
	Code    int    `json:"code,omitempty"`
	Message string `json:"message,omitempty"`
}

func (*JSONError) Error 

func (e *JSONError) Error() string

type JSONMessage 

type JSONMessage struct {
	Stream          string        `json:"stream,omitempty"`
	Status          string        `json:"status,omitempty"`
	Progress        *JSONProgress `json:"progressDetail,omitempty"`
	ProgressMessage string        `json:"progress,omitempty"` //deprecated
	ID              string        `json:"id,omitempty"`
	From            string        `json:"from,omitempty"`
	Time            int64         `json:"time,omitempty"`
	Error           *JSONError    `json:"errorDetail,omitempty"`
	ErrorMessage    string        `json:"error,omitempty"` //deprecated
}

func (*JSONMessage) Display 

func (jm *JSONMessage) Display(out io.Writer, isTerminal bool) error

type JSONProgress 

type JSONProgress struct {
	Current int   `json:"current,omitempty"`
	Total   int   `json:"total,omitempty"`
	Start   int64 `json:"start,omitempty"`
	// contains filtered or unexported fields
}

func (*JSONProgress) String 

func (p *JSONProgress) String() string

type KeyValuePair 

type KeyValuePair struct {
	Key   string
	Value string
}

type StatusError 

type StatusError struct {
	Status     string
	StatusCode int
}

An StatusError reports an unsuccessful exit by a command.

func (*StatusError) Error 

func (e *StatusError) Error() string

type StderrFormater 

type StderrFormater struct {
	io.Writer
	*StreamFormatter
}

func (*StderrFormater) Write 

func (sf *StderrFormater) Write(buf []byte) (int, error)

type StdoutFormater 

type StdoutFormater struct {
	io.Writer
	*StreamFormatter
}

func (*StdoutFormater) Write 

func (sf *StdoutFormater) Write(buf []byte) (int, error)

type StreamFormatter 

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

func NewStreamFormatter 

func NewStreamFormatter(json bool) *StreamFormatter

func (*StreamFormatter) FormatError 

func (sf *StreamFormatter) FormatError(err error) []byte

func (*StreamFormatter) FormatProg 

func (sf *StreamFormatter) FormatProg(id, action string, p interface{}) []byte

func (*StreamFormatter) FormatProgress 

func (sf *StreamFormatter) FormatProgress(id, action string, progress *JSONProgress) []byte

func (*StreamFormatter) FormatStatus 

func (sf *StreamFormatter) FormatStatus(id, format string, a ...interface{}) []byte

func (*StreamFormatter) FormatStream 

func (sf *StreamFormatter) FormatStream(str string) []byte

func (*StreamFormatter) Json 

func (sf *StreamFormatter) Json() bool

type VersionInfo 

type VersionInfo interface {
	Name() string
	Version() string
}

VersionInfo is used to model entities which has a version. It is basically a tupple with name and version.

type WriteCounter 

type WriteCounter struct {
	Count  int64
	Writer io.Writer
}

Wrap a concrete io.Writer and hold a count of the number of bytes written to the writer during a "session". This can be convenient when write return is masked (e.g., json.Encoder.Encode())

func NewWriteCounter 

func NewWriteCounter(w io.Writer) *WriteCounter

func (*WriteCounter) Write 

func (wc *WriteCounter) Write(p []byte) (count int, err error)

type WriteFlusher 

type WriteFlusher struct {
	sync.Mutex
	// contains filtered or unexported fields
}

func NewWriteFlusher 

func NewWriteFlusher(w io.Writer) *WriteFlusher

func (*WriteFlusher) Flush 

func (wf *WriteFlusher) Flush()

Flush the stream immediately.

func (*WriteFlusher) Write 

func (wf *WriteFlusher) Write(b []byte) (n int, err error)

Source Files

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