// NewBuilder creates a new Dockerfile builder from an optional dockerfile and a Config.
// If dockerfile is nil, the Dockerfile specified by Config.DockerfileName,
// will be read from the Context passed to Build().
func NewBuilder(clientCtx context.Context, config *types.ImageBuildOptions, backend builder.Backend, buildContext builder.Context, dockerfile io.ReadCloser) (b *Builder, err error) {
if config == nil {
config = new(types.ImageBuildOptions)
}
if config.BuildArgs == nil {
config.BuildArgs = make(map[string]string)
}
ctx, cancel := context.WithCancel(clientCtx)
b = &Builder{
clientCtx: ctx,
cancel: cancel,
options: config,
Stdout: os.Stdout,
Stderr: os.Stderr,
docker: backend,
context: buildContext,
runConfig: new(container.Config),
tmpContainers: map[string]struct{}{},
id: stringid.GenerateNonCryptoID(),
allowedBuildArgs: make(map[string]bool),
}
if dockerfile != nil {
b.dockerfile, err = parser.Parse(dockerfile)
if err != nil {
return nil, err
}
}
return b, nil
}
// BuildImage builds an image
func (c *Cluster) BuildImage(buildContext io.Reader, buildImage *types.ImageBuildOptions, out io.Writer) error {
c.scheduler.Lock()
// get an engine
config := cluster.BuildContainerConfig(containertypes.Config{Env: convertMapToKVStrings(buildImage.BuildArgs)},
containertypes.HostConfig{Resources: containertypes.Resources{CPUShares: buildImage.CPUShares, Memory: buildImage.Memory}},
networktypes.NetworkingConfig{})
buildImage.BuildArgs = convertKVStringsToMap(config.Env)
nodes, err := c.scheduler.SelectNodesForContainer(c.listNodes(), config)
c.scheduler.Unlock()
if err != nil {
return err
}
n := nodes[0]
reader, err := c.engines[n.ID].BuildImage(buildContext, buildImage)
if err != nil {
return err
}
if _, err := io.Copy(out, reader); err != nil {
return err
}
c.engines[n.ID].RefreshImages()
return nil
}
// BuildImage build an image
func (c *Cluster) BuildImage(buildImage *types.ImageBuildOptions, out io.Writer) error {
c.scheduler.Lock()
// get an engine
config := cluster.BuildContainerConfig(dockerclient.ContainerConfig{
CpuShares: buildImage.CPUShares,
Memory: buildImage.Memory,
Env: convertMapToKVStrings(buildImage.BuildArgs),
})
buildImage.BuildArgs = convertKVStringsToMap(config.Env)
nodes, err := c.scheduler.SelectNodesForContainer(c.listNodes(), config)
c.scheduler.Unlock()
if err != nil {
return err
}
n := nodes[0]
reader, err := c.engines[n.ID].BuildImage(buildImage)
if err != nil {
return err
}
if _, err := io.Copy(out, reader); err != nil {
return err
}
c.engines[n.ID].RefreshImages()
return nil
}
// NewBuilder creates a new Dockerfile builder from an optional dockerfile and a Config.
// If dockerfile is nil, the Dockerfile specified by Config.DockerfileName,
// will be read from the Context passed to Build().
func NewBuilder(clientCtx context.Context, config *types.ImageBuildOptions, backend builder.Backend, buildContext builder.Context, dockerfile io.ReadCloser) (b *Builder, err error) {
if config == nil {
config = new(types.ImageBuildOptions)
}
if config.BuildArgs == nil {
config.BuildArgs = make(map[string]string)
}
ctx, cancel := context.WithCancel(clientCtx)
b = &Builder{
clientCtx: ctx,
cancel: cancel,
options: config,
Stdout: os.Stdout,
Stderr: os.Stderr,
docker: backend,
context: buildContext,
runConfig: new(container.Config),
tmpContainers: map[string]struct{}{},
id: stringid.GenerateNonCryptoID(),
allowedBuildArgs: make(map[string]bool),
directive: parser.Directive{
EscapeSeen: false,
LookingForDirectives: true,
},
}
parser.SetEscapeToken(parser.DefaultEscapeToken, &b.directive) // Assume the default token for escape
if dockerfile != nil {
b.dockerfile, err = parser.Parse(dockerfile, &b.directive)
if err != nil {
return nil, err
}
}
return b, nil
}