dockerfile

Documentation

Overview

Package dockerfile is the evaluation step in the Dockerfile parse/evaluate pipeline.

It incorporates a dispatch table based on the parser.Node values (see the parser package for more information) that are yielded from the parser itself. Calling newBuilder with the BuildOpts struct can be used to customize the experience for execution purposes only. Parsing is controlled in the parser package, and this division of responsibility should be respected.

Please see the jump table targets for the actual invocations, most of which will call out to the functions in internals.go to deal with their tasks.

ONBUILD is a special case, which is covered in the onbuild() func in dispatchers.go.

The evaluator uses the concept of "steps", which are usually each processable line in the Dockerfile. Each step is numbered and certain actions are taken before and after each step, such as creating an image ID and removing temporary containers and images. Note that ONBUILD creates a kinda-sorta "sub run" which includes its own set of steps (usually only one of them).

Index

• func BuildFromConfig(config *container.Config, changes []string, os string) (*container.Config, error)
• type Archiver
• type BuildManager
  • func NewBuildManager(b builder.Backend, sg SessionGetter, fsCache *fscache.FSCache, ...) (*BuildManager, error)
  • func (bm *BuildManager) Build(ctx context.Context, config backend.BuildConfig) (*builder.Result, error)
• type Builder
• type ClientSessionSourceIdentifier
  • func NewClientSessionSourceIdentifier(ctx context.Context, sg SessionGetter, uuid string) (*ClientSessionSourceIdentifier, error)
  • func (csi *ClientSessionSourceIdentifier) Key() string
  • func (csi *ClientSessionSourceIdentifier) SharedKey() string
  • func (csi *ClientSessionSourceIdentifier) Transport() string
• type ClientSessionTransport
  • func NewClientSessionTransport() *ClientSessionTransport
  • func (cst *ClientSessionTransport) Copy(ctx context.Context, id fscache.RemoteIdentifier, dest string, ...) error
• type ImageProber
• type SessionGetter

Functions

func BuildFromConfig

func BuildFromConfig(config *container.Config, changes []string, os string) (*container.Config, error)

BuildFromConfig builds directly from `changes`, treating it as if it were the contents of a Dockerfile It will: - Call parse.Parse() to get an AST root for the concatenated Dockerfile entries. - Do build by calling builder.dispatch() to call all entries' handling routines

BuildFromConfig is used by the /commit endpoint, with the changes coming from the query parameter of the same name.

TODO: Remove?

Types

type Archiver

type Archiver interface {
	TarUntar(src, dst string) error
	UntarPath(src, dst string) error
	CopyWithTar(src, dst string) error
	CopyFileWithTar(src, dst string) error
	IDMappings() *idtools.IDMappings
}

Archiver defines an interface for copying files from one destination to another using Tar/Untar.

type BuildManager

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

BuildManager is shared across all Builder objects

func NewBuildManager

func NewBuildManager(b builder.Backend, sg SessionGetter, fsCache *fscache.FSCache, idMappings *idtools.IDMappings) (*BuildManager, error)

NewBuildManager creates a BuildManager

func (*BuildManager) Build

func (bm *BuildManager) Build(ctx context.Context, config backend.BuildConfig) (*builder.Result, error)

Build starts a new build from a BuildConfig

type Builder

type Builder struct {
	Stdout io.Writer
	Stderr io.Writer
	Aux    *streamformatter.AuxFormatter
	Output io.Writer
	// contains filtered or unexported fields
}

Builder is a Dockerfile builder It implements the builder.Backend interface.

type ClientSessionSourceIdentifier

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

ClientSessionSourceIdentifier is an identifier that can be used for requesting files from remote client

func NewClientSessionSourceIdentifier

func NewClientSessionSourceIdentifier(ctx context.Context, sg SessionGetter, uuid string) (*ClientSessionSourceIdentifier, error)

NewClientSessionSourceIdentifier returns new ClientSessionSourceIdentifier instance

func (*ClientSessionSourceIdentifier) Key

func (csi *ClientSessionSourceIdentifier) Key() string

Key returns unique key for remote identifier. Requests with same key return same data.

func (*ClientSessionSourceIdentifier) SharedKey

func (csi *ClientSessionSourceIdentifier) SharedKey() string

SharedKey returns shared key for remote identifier. Shared key is used for finding the base for a repeated transfer.

func (*ClientSessionSourceIdentifier) Transport

func (csi *ClientSessionSourceIdentifier) Transport() string

Transport returns transport identifier for remote identifier

type ClientSessionTransport

type ClientSessionTransport struct{}

ClientSessionTransport is a transport for copying files from docker client to the daemon.

func NewClientSessionTransport

func NewClientSessionTransport() *ClientSessionTransport

NewClientSessionTransport returns new ClientSessionTransport instance

func (*ClientSessionTransport) Copy

func (cst *ClientSessionTransport) Copy(ctx context.Context, id fscache.RemoteIdentifier, dest string, cu filesync.CacheUpdater) error

Copy data from a remote to a destination directory.

type ImageProber

type ImageProber interface {
	Reset()
	Probe(parentID string, runConfig *container.Config) (string, error)
}

ImageProber exposes an Image cache to the Builder. It supports resetting a cache.

type SessionGetter

type SessionGetter interface {
	Get(ctx context.Context, uuid string) (session.Caller, error)
}

SessionGetter is object used to get access to a session by uuid