76 lines
1.6 KiB
Go
76 lines
1.6 KiB
Go
package container
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import (
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"context"
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"fmt"
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"strings"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"github.com/nektos/act/pkg/common"
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log "github.com/sirupsen/logrus"
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)
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// NewDockerPullExecutorInput the input for the NewDockerPullExecutor function
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type NewDockerPullExecutorInput struct {
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Image string
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ForcePull bool
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}
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// NewDockerPullExecutor function to create a run executor for the container
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func NewDockerPullExecutor(input NewDockerPullExecutorInput) common.Executor {
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return func(ctx context.Context) error {
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logger := common.Logger(ctx)
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logger.Infof("%sdocker pull %v", logPrefix, input.Image)
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if common.Dryrun(ctx) {
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return nil
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}
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pull := input.ForcePull
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if !pull {
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imageExists, err := ImageExistsLocally(ctx, input.Image)
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log.Debugf("Image exists? %v", imageExists)
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if err != nil {
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return fmt.Errorf("unable to determine if image already exists for image %q", input.Image)
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}
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if !imageExists {
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pull = true
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}
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}
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if !pull {
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return nil
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}
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imageRef := cleanImage(input.Image)
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logger.Debugf("pulling image '%v'", imageRef)
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cli, err := client.NewClientWithOpts(client.FromEnv)
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if err != nil {
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return err
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}
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cli.NegotiateAPIVersion(ctx)
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reader, err := cli.ImagePull(ctx, imageRef, types.ImagePullOptions{})
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_ = logDockerResponse(logger, reader, err != nil)
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if err != nil {
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return err
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}
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return nil
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}
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}
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func cleanImage(image string) string {
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imageParts := len(strings.Split(image, "/"))
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if imageParts == 1 {
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image = fmt.Sprintf("docker.io/library/%s", image)
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} else if imageParts == 2 {
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image = fmt.Sprintf("docker.io/%s", image)
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}
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return image
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}
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