utils

package
v1.6.1 Latest Latest
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 Go to latest Published: May 7, 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 added in v0.7.0 

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

func CreatePidFile added in v0.6.6 

func CreatePidFile(pidfile string) error

func DigestReference added in v1.6.0 

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 added in v0.6.0 

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

func DockerInitPath added in v0.6.5 

func DockerInitPath(localCopy string) string

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

func DoesEnvExist added in v1.5.0 

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 added in v0.6.7 

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 added in v1.6.0 

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 added in v0.6.0 

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

func ParseFlags added in v1.5.0 

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 added in v1.5.0 

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 added in v0.9.0 

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 added in v0.6.6 

func RemovePidFile(pidfile string)

func ReplaceOrAppendEnvValues added in v0.9.0 

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 added in v1.5.0 

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 added in v0.6.7 

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 added in v1.2.0 

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

func TempDir added in v1.2.0 

func TempDir(rootDir string) (string, error)

TempDir returns the default directory to use for temporary files.

func TestDirectory added in v0.6.7 

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 added in v0.12.0 

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 added in v0.10.0 

func ValidateID(id string) error

Types

type HTTPAuthDecorator added in v0.7.1 

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

func (*HTTPAuthDecorator) ChangeRequest added in v0.7.1 

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

type HTTPMetaHeadersDecorator added in v0.6.1 

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

func (*HTTPMetaHeadersDecorator) ChangeRequest added in v0.6.1 

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

type HTTPRequestDecorator added in v0.6.0 

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 added in v0.7.1 

func NewHTTPAuthDecorator(login, password string) HTTPRequestDecorator

func NewHTTPUserAgentDecorator added in v0.6.0 

func NewHTTPUserAgentDecorator(versions ...VersionInfo) HTTPRequestDecorator

type HTTPRequestFactory added in v0.6.0 

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

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

func NewHTTPRequestFactory added in v0.6.0 

func NewHTTPRequestFactory(d ...HTTPRequestDecorator) *HTTPRequestFactory

func (*HTTPRequestFactory) AddDecorator added in v0.7.1 

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

func (*HTTPRequestFactory) GetDecorators added in v1.5.0 

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

func (*HTTPRequestFactory) NewRequest added in v0.6.0 

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 added in v0.6.0 

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

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

func (*HTTPUserAgentDecorator) ChangeRequest added in v0.6.0 

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

type JSONError added in v0.6.0 

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

func (*JSONError) Error added in v0.6.0 

func (e *JSONError) Error() string

type JSONMessage added in v0.4.1 

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 added in v0.5.1 

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

type JSONProgress added in v0.7.1 

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 added in v0.7.1 

func (p *JSONProgress) String() string

type KeyValuePair added in v0.10.0 

type KeyValuePair struct {
	Key   string
	Value string
}

type StatusError added in v0.6.2 

type StatusError struct {
	Status     string
	StatusCode int
}

An StatusError reports an unsuccessful exit by a command.

func (*StatusError) Error added in v0.6.2 

func (e *StatusError) Error() string

type StderrFormater added in v0.10.0 

type StderrFormater struct {
	io.Writer
	*StreamFormatter
}

func (*StderrFormater) Write added in v0.10.0 

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

type StdoutFormater added in v0.10.0 

type StdoutFormater struct {
	io.Writer
	*StreamFormatter
}

func (*StdoutFormater) Write added in v0.10.0 

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

type StreamFormatter added in v0.4.0 

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

func NewStreamFormatter added in v0.4.0 

func NewStreamFormatter(json bool) *StreamFormatter

func (*StreamFormatter) FormatError added in v0.4.0 

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

func (*StreamFormatter) FormatProg added in v1.6.0 

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

func (*StreamFormatter) FormatProgress added in v0.4.0 

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

func (*StreamFormatter) FormatStatus added in v0.4.0 

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

func (*StreamFormatter) FormatStream added in v0.7.1 

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

func (*StreamFormatter) Json added in v0.8.0 

func (sf *StreamFormatter) Json() bool

type VersionInfo added in v0.6.0 

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 added in v1.6.0 

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 added in v1.6.0 

func NewWriteCounter(w io.Writer) *WriteCounter

func (*WriteCounter) Write added in v1.6.0 

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 added in v0.6.6 

func (wf *WriteFlusher) Flush()

Flush the stream immediately.

func (*WriteFlusher) Write 

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

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