utils

package
v0.5.4-0...-3885ee0 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Aug 18, 2013 License: Apache-2.0 Imports: 25 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CheckLocalDns 

func CheckLocalDns(resolvConf []byte) bool

CheckLocalDns looks into the /etc/resolv.conf, it returns true if there is a local nameserver or if there is no nameserver.

func CompareKernelVersion 

func CompareKernelVersion(a, b *KernelVersionInfo) int

Compare two KernelVersionInfo struct. Returns -1 if a < b, = if a == b, 1 it a > b

func CopyDirectory 

func CopyDirectory(source, dest string) error

FIXME: this is deprecated by CopyWithTar in archive.go

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 Debugf 

func Debugf(format string, a ...interface{})

Debug function, if the debug flag is set, then display. Do nothing otherwise If Docker is in damon mode, also send the debug info on the socket

func DisplayJSONMessagesStream 

func DisplayJSONMessagesStream(in io.Reader, out io.Writer) error

func Download 

func Download(url string, stderr io.Writer) (*http.Response, error)

Request a given URL and return an io.Reader

func FindCgroupMountpoint 

func FindCgroupMountpoint(cgroupType string) (string, error)

func GetReleaseVersion 

func GetReleaseVersion() string

func GetResolvConf 

func GetResolvConf() ([]byte, error)

GetResolvConf opens and read the content of /etc/resolv.conf. It returns it as byte slice.

func GetTotalUsedFds 

func GetTotalUsedFds() int

func Go 

func Go(f func() error) chan error

Go is a basic promise implementation: it wraps calls a function in a goroutine, and returns a channel which will later return the function's return value.

func HashData 

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

func HumanDuration 

func HumanDuration(d time.Duration) string

HumanDuration returns a human-readable approximation of a duration (eg. "About a minute", "4 hours ago", etc.)

func HumanSize 

func HumanSize(size int64) string

HumanSize returns a human-readable approximation of a size using SI standard (eg. "44kB", "17MB")

func IsGIT 

func IsGIT(str string) bool

func IsURL 

func IsURL(str string) bool

func NewBufReader 

func NewBufReader(r io.Reader) *bufReader

func NewHTTPRequestError 

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

func NopWriteCloser 

func NopWriteCloser(w io.Writer) io.WriteCloser

func ParseHost 

func ParseHost(host string, port int, addr string) string

func ParseRepositoryTag 

func ParseRepositoryTag(repos string) (string, string)

Get a repos name and returns the right reposName + tag The tag can be confusing because of a port in a repository name. 

Ex: localhost.localdomain:5000/samalba/hipache:latest

func ProgressReader 

func ProgressReader(r io.ReadCloser, size int, output io.Writer, tpl []byte, sf *StreamFormatter, newline bool) *progressReader

func SelfPath 

func SelfPath() string

Figure out the absolute path of our own binary

func Trunc 

func Trunc(s string, maxlen int) string

func TruncateID 

func TruncateID(id string) string

TruncateID returns a shorthand version of a string identifier for convenience. A collision with other shorthands is very unlikely, but possible. In case of a collision a lookup with TruncIndex.Get() will fail, and the caller will need to use a langer prefix, or the full-length Id.

func UserLookup 

func UserLookup(uid string) (*user.User, error)

UserLookup check if the given username or uid is present in /etc/passwd and returns the user struct. If the username is not found, an error is returned.

Types

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 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) NewRequest 

func (self *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 (self *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 JSONLog 

type JSONLog struct {
	Log     string    `json:"log,omitempty"`
	Stream  string    `json:"stream,omitempty"`
	Created time.Time `json:"time"`
}

type JSONMessage 

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

func (*JSONMessage) Display 

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

type KernelVersionInfo 

type KernelVersionInfo struct {
	Kernel int
	Major  int
	Minor  int
	Flavor string
}

func GetKernelVersion 

func GetKernelVersion() (*KernelVersionInfo, error)

func (*KernelVersionInfo) String 

func (k *KernelVersionInfo) String() string

type NopFlusher 

type NopFlusher struct{}

func (*NopFlusher) Flush 

func (f *NopFlusher) Flush()

type NopWriter 

type NopWriter struct{}

func (*NopWriter) Write 

func (*NopWriter) 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) FormatProgress 

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

func (*StreamFormatter) FormatStatus 

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

func (*StreamFormatter) Used 

func (sf *StreamFormatter) Used() bool

type StreamWriter 

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

type TarSum 

type TarSum struct {
	io.Reader
	// contains filtered or unexported fields
}

func (*TarSum) Read 

func (ts *TarSum) Read(buf []byte) (int, error)

func (*TarSum) Sum 

func (ts *TarSum) Sum(extra []byte) string

type TruncIndex 

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

TruncIndex allows the retrieval of string identifiers by any of their unique prefixes. This is used to retrieve image and container IDs by more convenient shorthand prefixes.

func NewTruncIndex 

func NewTruncIndex() *TruncIndex

func (*TruncIndex) Add 

func (idx *TruncIndex) Add(id string) error

func (*TruncIndex) Delete 

func (idx *TruncIndex) Delete(id string) error

func (*TruncIndex) Get 

func (idx *TruncIndex) Get(s string) (string, error)

type Utsname 

type Utsname syscall.Utsname

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 WriteBroadcaster 

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

func NewWriteBroadcaster 

func NewWriteBroadcaster() *WriteBroadcaster

func (*WriteBroadcaster) AddWriter 

func (w *WriteBroadcaster) AddWriter(writer io.WriteCloser, stream string)

func (*WriteBroadcaster) CloseWriters 

func (w *WriteBroadcaster) CloseWriters() error

func (*WriteBroadcaster) Write 

func (w *WriteBroadcaster) Write(p []byte) (n 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) Write 

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

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.