41 lines
836 B
Go
41 lines
836 B
Go
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package docker
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import (
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"fmt"
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"io/ioutil"
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"golang.org/x/net/context"
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"github.com/docker/engine-api/client"
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"github.com/docker/engine-api/types"
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)
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// Pull pulls the given reference (image)
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func (p *Project) Pull(ref string) error {
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return p.ensureImageExists(ref, true)
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}
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func (p *Project) ensureImageExists(ref string, force bool) error {
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if !force {
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// Check if ref is already there
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_, _, err := p.Client.ImageInspectWithRaw(context.Background(), ref, false)
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if err != nil && !client.IsErrImageNotFound(err) {
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return err
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}
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if err == nil {
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return nil
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}
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}
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// And pull it
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responseBody, err := p.Client.ImagePull(context.Background(), ref, types.ImagePullOptions{})
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if err != nil {
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fmt.Printf("%v", err)
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return err
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}
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defer responseBody.Close()
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_, err = ioutil.ReadAll(responseBody)
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return err
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}
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