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45 lines
1.4 KiB
Go
45 lines
1.4 KiB
Go
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package graph
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import (
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"github.com/docker/docker/engine"
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"github.com/docker/docker/pkg/parsers"
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)
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// CmdTag assigns a new name and tag to an existing image. If the tag already exists,
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// it is changed and the image previously referenced by the tag loses that reference.
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// This may cause the old image to be garbage-collected if its reference count reaches zero.
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//
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// Syntax: image_tag NEWNAME OLDNAME
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// Example: image_tag shykes/myapp:latest shykes/myapp:1.42.0
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func (s *TagStore) CmdTag(job *engine.Job) engine.Status {
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if len(job.Args) != 2 {
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return job.Errorf("usage: %s NEWNAME OLDNAME", job.Name)
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}
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var (
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newName = job.Args[0]
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oldName = job.Args[1]
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)
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newRepo, newTag := parsers.ParseRepositoryTag(newName)
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// FIXME: Set should either parse both old and new name, or neither.
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// the current prototype is inconsistent.
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if err := s.Set(newRepo, newTag, oldName, true); err != nil {
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return job.Error(err)
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}
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return engine.StatusOK
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}
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// FIXME: merge into CmdTag above, and merge "image_tag" and "tag" into a single job.
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func (s *TagStore) CmdTagLegacy(job *engine.Job) engine.Status {
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if len(job.Args) != 2 && len(job.Args) != 3 {
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return job.Errorf("Usage: %s IMAGE REPOSITORY [TAG]\n", job.Name)
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}
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var tag string
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if len(job.Args) == 3 {
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tag = job.Args[2]
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}
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if err := s.Set(job.Args[1], tag, job.Args[0], job.GetenvBool("force")); err != nil {
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return job.Error(err)
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}
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return engine.StatusOK
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}
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