docker

package module
v0.8.2-0...-fb314c2 Latest Latest
Warning

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

 Go to latest Published: Mar 6, 2014 License: Apache-2.0 Imports: 51 Imported by: 0

README

Docker: the Linux container engine

Docker is an open source project to pack, ship and run any application as a lightweight container

Docker containers are both hardware-agnostic and platform-agnostic. This means that they can run anywhere, from your laptop to the largest EC2 compute instance and everything in between - and they don't require that you use a particular language, framework or packaging system. That makes them great building blocks for deploying and scaling web apps, databases and backend services without depending on a particular stack or provider.

Docker is an open-source implementation of the deployment engine which powers dotCloud, a popular Platform-as-a-Service. It benefits directly from the experience accumulated over several years of large-scale operation and support of hundreds of thousands of applications and databases.

Docker L

Better than VMs

A common method for distributing applications and sandboxing their execution is to use virtual machines, or VMs. Typical VM formats are VMWare's vmdk, Oracle Virtualbox's vdi, and Amazon EC2's ami. In theory these formats should allow every developer to automatically package their application into a "machine" for easy distribution and deployment. In practice, that almost never happens, for a few reasons:

  • Size: VMs are very large which makes them impractical to store and transfer.
  • Performance: running VMs consumes significant CPU and memory, which makes them impractical in many scenarios, for example local development of multi-tier applications, and large-scale deployment of cpu and memory-intensive applications on large numbers of machines.
  • Portability: competing VM environments don't play well with each other. Although conversion tools do exist, they are limited and add even more overhead.
  • Hardware-centric: VMs were designed with machine operators in mind, not software developers. As a result, they offer very limited tooling for what developers need most: building, testing and running their software. For example, VMs offer no facilities for application versioning, monitoring, configuration, logging or service discovery.

By contrast, Docker relies on a different sandboxing method known as containerization. Unlike traditional virtualization, containerization takes place at the kernel level. Most modern operating system kernels now support the primitives necessary for containerization, including Linux with openvz, vserver and more recently lxc, Solaris with zones and FreeBSD with Jails.

Docker builds on top of these low-level primitives to offer developers a portable format and runtime environment that solves all 4 problems. Docker containers are small (and their transfer can be optimized with layers), they have basically zero memory and cpu overhead, they are completely portable and are designed from the ground up with an application-centric design.

The best part: because Docker operates at the OS level, it can still be run inside a VM!

Plays well with others

Docker does not require that you buy into a particular programming language, framework, packaging system or configuration language.

Is your application a Unix process? Does it use files, tcp connections, environment variables, standard Unix streams and command-line arguments as inputs and outputs? Then Docker can run it.

Can your application's build be expressed as a sequence of such commands? Then Docker can build it.

Escape dependency hell

A common problem for developers is the difficulty of managing all their application's dependencies in a simple and automated way.

This is usually difficult for several reasons:

  • Cross-platform dependencies. Modern applications often depend on a combination of system libraries and binaries, language-specific packages, framework-specific modules, internal components developed for another project, etc. These dependencies live in different "worlds" and require different tools - these tools typically don't work well with each other, requiring awkward custom integrations.

  • Conflicting dependencies. Different applications may depend on different versions of the same dependency. Packaging tools handle these situations with various degrees of ease - but they all handle them in different and incompatible ways, which again forces the developer to do extra work.

  • Custom dependencies. A developer may need to prepare a custom version of their application's dependency. Some packaging systems can handle custom versions of a dependency, others can't - and all of them handle it differently.

Docker solves dependency hell by giving the developer a simple way to express all their application's dependencies in one place, and streamline the process of assembling them. If this makes you think of XKCD 927, don't worry. Docker doesn't replace your favorite packaging systems. It simply orchestrates their use in a simple and repeatable way. How does it do that? With layers.

Docker defines a build as running a sequence of Unix commands, one after the other, in the same container. Build commands modify the contents of the container (usually by installing new files on the filesystem), the next command modifies it some more, etc. Since each build command inherits the result of the previous commands, the order in which the commands are executed expresses dependencies.

Here's a typical Docker build process:

FROM ubuntu:12.04
RUN apt-get update
RUN apt-get install -q -y python python-pip curl
RUN curl -L https://github.com/shykes/helloflask/archive/master.tar.gz | tar -xzv
RUN cd helloflask-master && pip install -r requirements.txt

Note that Docker doesn't care how dependencies are built - as long as they can be built by running a Unix command in a container.

Getting started

Docker can be installed on your local machine as well as servers - both bare metal and virtualized. It is available as a binary on most modern Linux systems, or as a VM on Windows, Mac and other systems.

We also offer an interactive tutorial for quickly learning the basics of using Docker.

For up-to-date install instructions and online tutorials, see the Getting Started page.

Usage examples

Docker can be used to run short-lived commands, long-running daemons (app servers, databases etc.), interactive shell sessions, etc.

You can find a list of real-world examples in the documentation.

Under the hood

Under the hood, Docker is built on the following components:

Contributing to Docker

Want to hack on Docker? Awesome! There are instructions to get you started here.

They are probably not perfect, please let us know if anything feels wrong or incomplete.

Brought to you courtesy of our legal counsel. For more context, please see the Notice document.

Use and transfer of Docker may be subject to certain restrictions by the United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not violate applicable laws.

For more information, please see http://www.bis.doc.gov

Documentation

Index

Constants

View Source 
const DEFAULTTAG = "latest"
View Source 
const (
	DisableNetworkBridge = "none"
)
View Source 
const MaxImageDepth = 127

Set the max depth to the aufs default that most kernels are compiled with For more information see: http://sourceforge.net/p/aufs/aufs3-standalone/ci/aufs3.12/tree/config.mk

Variables

View Source 
var (
	ErrNotATTY               = errors.New("The PTY is not a file")
	ErrNoTTY                 = errors.New("No PTY found")
	ErrContainerStart        = errors.New("The container failed to start. Unknown error")
	ErrContainerStartTimeout = errors.New("The container failed to start due to timed out.")
)
View Source 
var (
	ErrDockerfileEmpty = errors.New("Dockerfile cannot be empty")
)

Functions

func GenerateID 

func GenerateID() string

func GetDefaultNetworkMtu 

func GetDefaultNetworkMtu() int

func GetVersion 

func GetVersion(job *engine.Job) engine.Status

func InitServer 

func InitServer(job *engine.Job) engine.Status

jobInitApi runs the remote api server `srv` as a daemon, Only one api server can run at the same time - this is enforced by a pidfile. The signals SIGINT, SIGQUIT and SIGTERM are intercepted for cleanup.

func StoreImage 

func StoreImage(img *Image, jsonData []byte, layerData archive.ArchiveReader, root, layer string) error

func ValidateID 

func ValidateID(id string) error

Types

type BindMap 

type BindMap struct {
	SrcPath string
	DstPath string
	Mode    string
}

type BuildFile 

type BuildFile interface {
	Build(io.Reader) (string, error)
	CmdFrom(string) error
	CmdRun(string) error
}

func NewBuildFile 

func NewBuildFile(srv *Server, outStream, errStream io.Writer, verbose, utilizeCache, rm bool, outOld io.Writer, sf *utils.StreamFormatter, auth *auth.AuthConfig, authConfigFile *auth.ConfigFile) BuildFile

type Change 

type Change struct {
	archive.Change
}

type Container 

type Container struct {
	sync.Mutex

	ID string

	Created time.Time

	Path string
	Args []string

	Config *runconfig.Config
	State  State
	Image  string

	NetworkSettings *NetworkSettings

	ResolvConfPath string
	HostnamePath   string
	HostsPath      string
	Name           string
	Driver         string

	Volumes map[string]string
	// Store rw/ro in a separate structure to preserve reverse-compatibility on-disk.
	// Easier than migrating older container configs :)
	VolumesRW map[string]bool
	// contains filtered or unexported fields
}

func (*Container) Attach 

func (container *Container) Attach(stdin io.ReadCloser, stdinCloser io.Closer, stdout io.Writer, stderr io.Writer) chan error

func (*Container) BasefsPath 

func (container *Container) BasefsPath() string

This is the stand-alone version of the root fs, without any additional mounts. This directory is usable whenever the container is mounted (and not unmounted)

func (*Container) Changes 

func (container *Container) Changes() ([]archive.Change, error)

func (*Container) Copy 

func (container *Container) Copy(resource string) (io.ReadCloser, error)

func (*Container) EnvConfigPath 

func (container *Container) EnvConfigPath() (string, error)

func (*Container) Export 

func (container *Container) Export() (archive.Archive, error)

func (*Container) ExportRw 

func (container *Container) ExportRw() (archive.Archive, error)

func (*Container) Exposes 

func (container *Container) Exposes(p nat.Port) bool

Returns true if the container exposes a certain port

func (*Container) FromDisk 

func (container *Container) FromDisk() error

func (*Container) GetImage 

func (container *Container) GetImage() (*Image, error)

func (*Container) GetPtyMaster 

func (container *Container) GetPtyMaster() (*os.File, error)

func (*Container) GetSize 

func (container *Container) GetSize() (int64, int64)

GetSize, return real size, virtual size

func (*Container) Inject 

func (container *Container) Inject(file io.Reader, pth string) error

Inject the io.Reader at the given path. Note: do not close the reader

func (*Container) Kill 

func (container *Container) Kill() error

func (*Container) Mount 

func (container *Container) Mount() error

func (*Container) Output 

func (container *Container) Output() (output []byte, err error)

func (*Container) ReadLog 

func (container *Container) ReadLog(name string) (io.Reader, error)

func (*Container) Resize 

func (container *Container) Resize(h, w int) error

func (*Container) Restart 

func (container *Container) Restart(seconds int) error

func (*Container) RootfsPath 

func (container *Container) RootfsPath() string

This method must be exported to be used from the lxc template This directory is only usable when the container is running

func (*Container) Run 

func (container *Container) Run() error

func (*Container) Start 

func (container *Container) Start() (err error)

func (*Container) StderrPipe 

func (container *Container) StderrPipe() (io.ReadCloser, error)

func (*Container) StdinPipe 

func (container *Container) StdinPipe() (io.WriteCloser, error)

func (*Container) StdoutPipe 

func (container *Container) StdoutPipe() (io.ReadCloser, error)

func (*Container) Stop 

func (container *Container) Stop(seconds int) error

func (*Container) ToDisk 

func (container *Container) ToDisk() (err error)

func (*Container) Unmount 

func (container *Container) Unmount() error

func (*Container) Wait 

func (container *Container) Wait() int

Wait blocks until the container stops running, then returns its exit code.

func (*Container) WaitTimeout 

func (container *Container) WaitTimeout(timeout time.Duration) error

func (*Container) When 

func (container *Container) When() time.Time

type DaemonConfig 

type DaemonConfig struct {
	Pidfile                     string
	Root                        string
	AutoRestart                 bool
	Dns                         []string
	EnableIptables              bool
	EnableIpForward             bool
	DefaultIp                   net.IP
	BridgeIface                 string
	BridgeIP                    string
	InterContainerCommunication bool
	GraphDriver                 string
	ExecDriver                  string
	Mtu                         int
	DisableNetwork              bool
}

FIXME: separate runtime configuration from http api configuration

func DaemonConfigFromJob 

func DaemonConfigFromJob(job *engine.Job) *DaemonConfig

ConfigFromJob creates and returns a new DaemonConfig object by parsing the contents of a job's environment.

type Graph 

type Graph struct {
	Root string
	// contains filtered or unexported fields
}

A Graph is a store for versioned filesystem images and the relationship between them.

func NewGraph 

func NewGraph(root string, driver graphdriver.Driver) (*Graph, error)

NewGraph instantiates a new graph at the given root path in the filesystem. `root` will be created if it doesn't exist.

func (*Graph) ByParent 

func (graph *Graph) ByParent() (map[string][]*Image, error)

ByParent returns a lookup table of images by their parent. If an image of id ID has 3 children images, then the value for key ID will be a list of 3 images. If an image has no children, it will not have an entry in the table.

func (*Graph) Create 

func (graph *Graph) Create(layerData archive.ArchiveReader, container *Container, comment, author string, config *runconfig.Config) (*Image, error)

Create creates a new image and registers it in the graph.

func (*Graph) Delete 

func (graph *Graph) Delete(name string) error

Delete atomically removes an image from the graph.

func (*Graph) Driver 

func (graph *Graph) Driver() graphdriver.Driver

func (*Graph) Exists 

func (graph *Graph) Exists(id string) bool

Exists returns true if an image is registered at the given id. If the image doesn't exist or if an error is encountered, false is returned.

func (*Graph) Get 

func (graph *Graph) Get(name string) (*Image, error)

Get returns the image with the given id, or an error if the image doesn't exist.

func (*Graph) Heads 

func (graph *Graph) Heads() (map[string]*Image, error)

Heads returns all heads in the graph, keyed by id. A head is an image which is not the parent of another image in the graph.

func (*Graph) IsNotExist 

func (graph *Graph) IsNotExist(err error) bool

FIXME: Implement error subclass instead of looking at the error text Note: This is the way golang implements os.IsNotExists on Plan9

func (*Graph) Map 

func (graph *Graph) Map() (map[string]*Image, error)

Map returns a list of all images in the graph, addressable by ID.

func (*Graph) Mktemp 

func (graph *Graph) Mktemp(id string) (string, error)

Mktemp creates a temporary sub-directory inside the graph's filesystem.

func (*Graph) Register 

func (graph *Graph) Register(jsonData []byte, layerData archive.ArchiveReader, img *Image) (err error)

Register imports a pre-existing image into the graph. FIXME: pass img as first argument

func (*Graph) TempLayerArchive 

func (graph *Graph) TempLayerArchive(id string, compression archive.Compression, sf *utils.StreamFormatter, output io.Writer) (*archive.TempArchive, error)

TempLayerArchive creates a temporary archive of the given image's filesystem layer. 

The archive is stored on disk and will be automatically deleted as soon as has been read.
If output is not nil, a human-readable progress bar will be written to it.
FIXME: does this belong in Graph? How about MktempFile, let the caller use it for archives?

type History 

type History []*Container

History is a convenience type for storing a list of containers, ordered by creation date.

func (*History) Add 

func (history *History) Add(container *Container)

func (*History) Len 

func (history *History) Len() int

func (*History) Less 

func (history *History) Less(i, j int) bool

func (*History) Swap 

func (history *History) Swap(i, j int)

type Image 

type Image struct {
	ID              string            `json:"id"`
	Parent          string            `json:"parent,omitempty"`
	Comment         string            `json:"comment,omitempty"`
	Created         time.Time         `json:"created"`
	Container       string            `json:"container,omitempty"`
	ContainerConfig runconfig.Config  `json:"container_config,omitempty"`
	DockerVersion   string            `json:"docker_version,omitempty"`
	Author          string            `json:"author,omitempty"`
	Config          *runconfig.Config `json:"config,omitempty"`
	Architecture    string            `json:"architecture,omitempty"`
	OS              string            `json:"os,omitempty"`

	Size int64
	// contains filtered or unexported fields
}

func LoadImage 

func LoadImage(root string) (*Image, error)

func NewImgJSON 

func NewImgJSON(src []byte) (*Image, error)

Build an Image object from raw json data

func (*Image) Depth 

func (img *Image) Depth() (int, error)

Depth returns the number of parents for a current image

func (*Image) GetParent 

func (img *Image) GetParent() (*Image, error)

func (*Image) History 

func (img *Image) History() ([]*Image, error)

Image includes convenience proxy functions to its graph These functions will return an error if the image is not registered (ie. if image.graph == nil)

func (*Image) SaveSize 

func (img *Image) SaveSize(root string) error

SaveSize stores the current `size` value of `img` in the directory `root`.

func (*Image) TarLayer 

func (img *Image) TarLayer() (arch archive.Archive, err error)

TarLayer returns a tar archive of the image's filesystem layer.

func (*Image) WalkHistory 

func (img *Image) WalkHistory(handler func(*Image) error) (err error)

type NetworkSettings 

type NetworkSettings struct {
	IPAddress   string
	IPPrefixLen int
	Gateway     string
	Bridge      string
	PortMapping map[string]PortMapping // Deprecated
	Ports       nat.PortMap
}

func (*NetworkSettings) PortMappingAPI 

func (settings *NetworkSettings) PortMappingAPI() *engine.Table

type PortMapping 

type PortMapping map[string]string // Deprecated

FIXME: move deprecated port stuff to nat to clean up the core.

type Repository 

type Repository map[string]string

type Runtime 

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

func NewRuntime 

func NewRuntime(config *DaemonConfig, eng *engine.Engine) (*Runtime, error)

FIXME: harmonize with NewGraph()

func NewRuntimeFromDirectory 

func NewRuntimeFromDirectory(config *DaemonConfig, eng *engine.Engine) (*Runtime, error)

func (*Runtime) Changes 

func (runtime *Runtime) Changes(container *Container) ([]archive.Change, error)

func (*Runtime) Children 

func (runtime *Runtime) Children(name string) (map[string]*Container, error)

func (*Runtime) Close 

func (runtime *Runtime) Close() error

func (*Runtime) Commit 

func (runtime *Runtime) Commit(container *Container, repository, tag, comment, author string, config *runconfig.Config) (*Image, error)

Commit creates a new filesystem image from the current state of a container. The image can optionally be tagged into a repository

func (*Runtime) Create 

func (runtime *Runtime) Create(config *runconfig.Config, name string) (*Container, []string, error)

Create creates a new container from the given configuration with a given name.

func (*Runtime) Destroy 

func (runtime *Runtime) Destroy(container *Container) error

Destroy unregisters a container from the runtime and cleanly removes its contents from the filesystem.

func (*Runtime) Diff 

func (runtime *Runtime) Diff(container *Container) (archive.Archive, error)

func (*Runtime) Exists 

func (runtime *Runtime) Exists(id string) bool

Exists returns a true if a container of the specified ID or name exists, false otherwise.

func (*Runtime) Get 

func (runtime *Runtime) Get(name string) *Container

Get looks for a container by the specified ID or name, and returns it. If the container is not found, or if an error occurs, nil is returned.

func (*Runtime) GetByName 

func (runtime *Runtime) GetByName(name string) (*Container, error)

func (*Runtime) Graph 

func (runtime *Runtime) Graph() *Graph

FIXME: this is a convenience function for integration tests which need direct access to runtime.graph. Once the tests switch to using engine and jobs, this method can go away.

func (*Runtime) Kill 

func (runtime *Runtime) Kill(c *Container, sig int) error

func (*Runtime) List 

func (runtime *Runtime) List() []*Container

List returns an array of all containers registered in the runtime.

func (*Runtime) LogToDisk 

func (runtime *Runtime) LogToDisk(src *utils.WriteBroadcaster, dst, stream string) error

func (*Runtime) Mount 

func (runtime *Runtime) Mount(container *Container) error

func (*Runtime) Nuke 

func (runtime *Runtime) Nuke() error

Nuke kills all containers then removes all content from the content root, including images, volumes and container filesystems. Again: this will remove your entire docker runtime!

func (*Runtime) Register 

func (runtime *Runtime) Register(container *Container) error

Register makes a container object usable by the runtime as <container.ID> 

func (runtime *Runtime) RegisterLink(parent, child *Container, alias string) error

func (*Runtime) RestoreCommand 

func (runtime *Runtime) RestoreCommand(c *Container) error

func (*Runtime) Run 

func (runtime *Runtime) Run(c *Container, pipes *execdriver.Pipes, startCallback execdriver.StartCallback) (int, error)

func (*Runtime) Unmount 

func (runtime *Runtime) Unmount(container *Container) error

type Server 

type Server struct {
	sync.RWMutex

	Eng *engine.Engine
	// contains filtered or unexported fields
}

func NewServer 

func NewServer(eng *engine.Engine, config *DaemonConfig) (*Server, error)

func (*Server) AddEvent 

func (srv *Server) AddEvent(jm utils.JSONMessage)

func (*Server) Auth 

func (srv *Server) Auth(job *engine.Job) engine.Status

func (*Server) Build 

func (srv *Server) Build(job *engine.Job) engine.Status

func (*Server) Close 

func (srv *Server) Close() error

func (*Server) ContainerAttach 

func (srv *Server) ContainerAttach(job *engine.Job) engine.Status

func (*Server) ContainerChanges 

func (srv *Server) ContainerChanges(job *engine.Job) engine.Status

func (*Server) ContainerCommit 

func (srv *Server) ContainerCommit(job *engine.Job) engine.Status

func (*Server) ContainerCopy 

func (srv *Server) ContainerCopy(job *engine.Job) engine.Status

func (*Server) ContainerCreate 

func (srv *Server) ContainerCreate(job *engine.Job) engine.Status

func (*Server) ContainerDestroy 

func (srv *Server) ContainerDestroy(job *engine.Job) engine.Status

func (*Server) ContainerExport 

func (srv *Server) ContainerExport(job *engine.Job) engine.Status

func (*Server) ContainerInspect 

func (srv *Server) ContainerInspect(name string) (*Container, error)

func (*Server) ContainerKill 

func (srv *Server) ContainerKill(job *engine.Job) engine.Status

ContainerKill send signal to the container If no signal is given (sig 0), then Kill with SIGKILL and wait for the container to exit. If a signal is given, then just send it to the container and return.

func (*Server) ContainerResize 

func (srv *Server) ContainerResize(job *engine.Job) engine.Status

func (*Server) ContainerRestart 

func (srv *Server) ContainerRestart(job *engine.Job) engine.Status

func (*Server) ContainerStart 

func (srv *Server) ContainerStart(job *engine.Job) engine.Status

func (*Server) ContainerStop 

func (srv *Server) ContainerStop(job *engine.Job) engine.Status

func (*Server) ContainerTop 

func (srv *Server) ContainerTop(job *engine.Job) engine.Status

func (*Server) ContainerWait 

func (srv *Server) ContainerWait(job *engine.Job) engine.Status

func (*Server) Containers 

func (srv *Server) Containers(job *engine.Job) engine.Status

func (*Server) DeleteImage 

func (srv *Server) DeleteImage(name string, imgs *engine.Table, first, force bool) error

func (*Server) DockerInfo 

func (srv *Server) DockerInfo(job *engine.Job) engine.Status

func (*Server) Events 

func (srv *Server) Events(job *engine.Job) engine.Status

func (*Server) GetEvents 

func (srv *Server) GetEvents() []utils.JSONMessage

func (*Server) HTTPRequestFactory 

func (srv *Server) HTTPRequestFactory(metaHeaders map[string][]string) *utils.HTTPRequestFactory

func (*Server) ImageDelete 

func (srv *Server) ImageDelete(job *engine.Job) engine.Status

func (*Server) ImageExport 

func (srv *Server) ImageExport(job *engine.Job) engine.Status

ImageExport exports all images with the given tag. All versions containing the same tag are exported. The resulting output is an uncompressed tar ball. name is the set of tags to export. out is the writer where the images are written to.

func (*Server) ImageGetCached 

func (srv *Server) ImageGetCached(imgID string, config *runconfig.Config) (*Image, error)

func (*Server) ImageHistory 

func (srv *Server) ImageHistory(job *engine.Job) engine.Status

func (*Server) ImageImport 

func (srv *Server) ImageImport(job *engine.Job) engine.Status

func (*Server) ImageInsert 

func (srv *Server) ImageInsert(job *engine.Job) engine.Status

func (*Server) ImageInspect 

func (srv *Server) ImageInspect(name string) (*Image, error)

func (*Server) ImageLoad 

func (srv *Server) ImageLoad(job *engine.Job) engine.Status

Loads a set of images into the repository. This is the complementary of ImageExport. The input stream is an uncompressed tar ball containing images and metadata.

func (*Server) ImagePull 

func (srv *Server) ImagePull(job *engine.Job) engine.Status

func (*Server) ImagePush 

func (srv *Server) ImagePush(job *engine.Job) engine.Status

FIXME: Allow to interrupt current push when new push of same image is done.

func (*Server) ImageTag 

func (srv *Server) ImageTag(job *engine.Job) engine.Status

func (*Server) Images 

func (srv *Server) Images(job *engine.Job) engine.Status

func (*Server) ImagesSearch 

func (srv *Server) ImagesSearch(job *engine.Job) engine.Status

func (*Server) ImagesViz 

func (srv *Server) ImagesViz(job *engine.Job) engine.Status

func (*Server) JobInspect 

func (srv *Server) JobInspect(job *engine.Job) engine.Status

func (*Server) LogEvent 

func (srv *Server) LogEvent(action, id, from string) *utils.JSONMessage
func (srv *Server) RegisterLinks(container *Container, hostConfig *runconfig.HostConfig) error

type State 

type State struct {
	sync.RWMutex
	Running    bool
	Pid        int
	ExitCode   int
	StartedAt  time.Time
	FinishedAt time.Time
	Ghost      bool
}

func (*State) GetExitCode 

func (s *State) GetExitCode() int

func (*State) IsGhost 

func (s *State) IsGhost() bool

func (*State) IsRunning 

func (s *State) IsRunning() bool

func (*State) SetGhost 

func (s *State) SetGhost(val bool)

func (*State) SetRunning 

func (s *State) SetRunning(pid int)

func (*State) SetStopped 

func (s *State) SetStopped(exitCode int)

func (*State) String 

func (s *State) String() string

String returns a human-readable description of the state

type StderrFormater 

type StderrFormater struct {
	io.Writer
	*utils.StreamFormatter
}

func (*StderrFormater) Write 

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

type StdoutFormater 

type StdoutFormater struct {
	io.Writer
	*utils.StreamFormatter
}

func (*StdoutFormater) Write 

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

type TagStore 

type TagStore struct {
	Repositories map[string]Repository
	// contains filtered or unexported fields
}

func NewTagStore 

func NewTagStore(path string, graph *Graph) (*TagStore, error)

func (*TagStore) ByID 

func (store *TagStore) ByID() map[string][]string

Return a reverse-lookup table of all the names which refer to each image Eg. {"43b5f19b10584": {"base:latest", "base:v1"}}

func (*TagStore) Delete 

func (store *TagStore) Delete(repoName, tag string) (bool, error)

func (*TagStore) DeleteAll 

func (store *TagStore) DeleteAll(id string) error

func (*TagStore) Get 

func (store *TagStore) Get(repoName string) (Repository, error)

func (*TagStore) GetImage 

func (store *TagStore) GetImage(repoName, tagOrID string) (*Image, error)

func (*TagStore) ImageName 

func (store *TagStore) ImageName(id string) string

func (*TagStore) LookupImage 

func (store *TagStore) LookupImage(name string) (*Image, error)

func (*TagStore) Reload 

func (store *TagStore) Reload() error

func (*TagStore) Save 

func (store *TagStore) Save() error

func (*TagStore) Set 

func (store *TagStore) Set(repoName, tag, imageName string, force bool) error

Source Files

View all Source files

Directories

Path Synopsis
docker-device-tool
host-integration
lxc
native
These types are wrappers around the libcontainer Terminal interface so that we can resuse the docker implementations where possible.
 These types are wrappers around the libcontainer Terminal interface so that we can resuse the docker implementations where possible.
aufs
btrfs
devmapper
vfs
ipallocator
lxc
portallocator
portmapper
pkg
cgroups
collections
graphdb
iptables
libcontainer
libcontainer/apparmor
libcontainer/capabilities
libcontainer/network
libcontainer/nsinit
libcontainer/nsinit/nsinit
libcontainer/utils
listenbuffer
Package to allow go applications to immediately start listening on a socket, unix, tcp, udp but hold connections until the application has booted and is ready to accept them
 Package to allow go applications to immediately start listening on a socket, unix, tcp, udp but hold connections until the application has booted and is ready to accept them
mflag
Package flag implements command-line flag parsing.
 Package flag implements command-line flag parsing.
mflag/example
mount
namesgenerator
netlink
Packet netlink provide access to low level Netlink sockets and messages.
 Packet netlink provide access to low level Netlink sockets and messages.
opts
proxy
sysinfo
system
systemd
systemd/activation
term
user
version

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.