84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
package source
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import (
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"context"
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"fmt"
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"os"
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"github.com/containers/buildah/pkg/parse"
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"github.com/containers/image/v5/copy"
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"github.com/containers/image/v5/manifest"
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"github.com/containers/image/v5/oci/layout"
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"github.com/containers/image/v5/signature"
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"github.com/containers/image/v5/types"
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)
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// PushOptions includes data to alter certain knobs when pushing a source
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// image.
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type PushOptions struct {
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// Require HTTPS and verify certificates when accessing the registry.
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TLSVerify bool
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// [username[:password] to use when connecting to the registry.
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Credentials string
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// Quiet the progress bars when pushing.
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Quiet bool
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// If set after copying the artifact, write the digest of the resulting image to the file
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DigestFile string
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}
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// Push the source image at `sourcePath` to `imageInput` at a container
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// registry.
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func Push(ctx context.Context, sourcePath string, imageInput string, options PushOptions) error {
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srcRef, err := layout.ParseReference(sourcePath)
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if err != nil {
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return err
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}
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destRef, err := stringToImageReference(imageInput)
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if err != nil {
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return err
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}
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sysCtx := &types.SystemContext{
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DockerInsecureSkipTLSVerify: types.NewOptionalBool(!options.TLSVerify),
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}
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if options.Credentials != "" {
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authConf, err := parse.AuthConfig(options.Credentials)
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if err != nil {
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return err
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}
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sysCtx.DockerAuthConfig = authConf
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}
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policy, err := signature.DefaultPolicy(sysCtx)
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if err != nil {
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return fmt.Errorf("obtaining default signature policy: %w", err)
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}
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policyContext, err := signature.NewPolicyContext(policy)
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if err != nil {
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return fmt.Errorf("creating new signature policy context: %w", err)
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}
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copyOpts := ©.Options{
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DestinationCtx: sysCtx,
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}
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if !options.Quiet {
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copyOpts.ReportWriter = os.Stderr
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}
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manifestBytes, err := copy.Image(ctx, policyContext, destRef, srcRef, copyOpts)
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if err != nil {
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return fmt.Errorf("pushing source image: %w", err)
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}
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if options.DigestFile != "" {
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manifestDigest, err := manifest.Digest(manifestBytes)
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if err != nil {
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return fmt.Errorf("computing digest of manifest of source: %w", err)
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}
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if err = os.WriteFile(options.DigestFile, []byte(manifestDigest.String()), 0644); err != nil {
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return fmt.Errorf("failed to write digest to file %q: %w", options.DigestFile, err)
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}
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}
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return nil
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}
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