84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
package docker
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import (
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"github.com/dotcloud/docker/archive"
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"github.com/dotcloud/docker/nat"
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"github.com/dotcloud/docker/pkg/namesgenerator"
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"github.com/dotcloud/docker/runconfig"
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"github.com/dotcloud/docker/utils"
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"io"
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"sync/atomic"
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)
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type Change struct {
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archive.Change
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}
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func migratePortMappings(config *runconfig.Config, hostConfig *runconfig.HostConfig) error {
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if config.PortSpecs != nil {
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ports, bindings, err := nat.ParsePortSpecs(config.PortSpecs)
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if err != nil {
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return err
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}
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config.PortSpecs = nil
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if len(bindings) > 0 {
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if hostConfig == nil {
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hostConfig = &runconfig.HostConfig{}
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}
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hostConfig.PortBindings = bindings
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}
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if config.ExposedPorts == nil {
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config.ExposedPorts = make(nat.PortSet, len(ports))
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}
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for k, v := range ports {
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config.ExposedPorts[k] = v
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}
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}
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return nil
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}
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// Links come in the format of
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// name:alias
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func parseLink(rawLink string) (map[string]string, error) {
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return utils.PartParser("name:alias", rawLink)
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}
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type checker struct {
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runtime *Runtime
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}
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func (c *checker) Exists(name string) bool {
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return c.runtime.containerGraph.Exists("/" + name)
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}
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// Generate a random and unique name
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func generateRandomName(runtime *Runtime) (string, error) {
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return namesgenerator.GenerateRandomName(&checker{runtime})
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}
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// Read an io.Reader and call a function when it returns EOF
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func EofReader(r io.Reader, callback func()) *eofReader {
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return &eofReader{
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Reader: r,
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callback: callback,
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}
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}
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type eofReader struct {
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io.Reader
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gotEOF int32
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callback func()
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}
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func (r *eofReader) Read(p []byte) (n int, err error) {
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n, err = r.Reader.Read(p)
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if err == io.EOF {
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// Use atomics to make the gotEOF check threadsafe
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if atomic.CompareAndSwapInt32(&r.gotEOF, 0, 1) {
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r.callback()
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}
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}
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return
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}
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