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Merge pull request #140 from amartin120/retry-logic
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Retry logic / Auth Flag Fix / Sync Cleanup
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amartin120 authored Nov 30, 2023
2 parents 756c017 + f1fbd7e commit c04211a
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Showing 4 changed files with 98 additions and 50 deletions.
3 changes: 2 additions & 1 deletion cmd/hauler/cli/store/add.go
Original file line number Diff line number Diff line change
Expand Up @@ -98,7 +98,8 @@ func storeImage(ctx context.Context, s *store.Layout, i v1alpha1.Image) error {
}

err = cosign.SaveImage(ctx, s, r.Name())
//desc, err := s.AddOCI(ctx, img, r.Name())
// sync with local index
s.CopyAll(ctx, s.OCI, nil)
if err != nil {
return err
}
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7 changes: 7 additions & 0 deletions cmd/hauler/cli/store/copy.go
Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,13 @@ func CopyCmd(ctx context.Context, o *CopyOpts, s *store.Layout, targetRef string
Insecure: o.Insecure,
PlainHTTP: o.PlainHTTP,
}

if ropts.Username != "" {
err := cosign.RegistryLogin(ctx, s, components[1], ropts)
if err != nil {
return err
}
}

err := cosign.LoadImage(ctx, s, components[1], ropts)
if err != nil {
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6 changes: 0 additions & 6 deletions cmd/hauler/cli/store/sync.go
Original file line number Diff line number Diff line change
Expand Up @@ -42,12 +42,6 @@ func (o *SyncOpts) AddFlags(cmd *cobra.Command) {
func SyncCmd(ctx context.Context, o *SyncOpts, s *store.Layout) error {
l := log.FromContext(ctx)

// Start from an empty store (contents are cached elsewhere)
l.Debugf("flushing content store")
if err := s.Flush(ctx); err != nil {
return err
}

// if passed products, check for a remote manifest to retrieve and use.
for _, product := range o.Products {
l.Infof("processing content file for product: '%s'", product)
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132 changes: 89 additions & 43 deletions pkg/cosign/cosign.go
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import (
"context"
"strings"
"encoding/json"
"time"

ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"oras.land/oras-go/pkg/content"
Expand All @@ -24,77 +25,122 @@ import (
"github.com/rancherfederal/hauler/pkg/apis/hauler.cattle.io/v1alpha1"
)

const maxRetries = 3
const retryDelay = time.Second * 5

// VerifyFileSignature verifies the digital signature of a file using Sigstore/Cosign.
func VerifySignature(ctx context.Context, s *store.Layout, keyPath string, ref string) error {
operation := func() error {
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

// Ensure that the cosign binary is installed or download it if needed
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

// Command to verify the signature using Cosign.
cmd := exec.Command(cosignBinaryPath, "verify", "--insecure-ignore-tlog", "--key", keyPath, ref)
cmd := exec.Command(cosignBinaryPath, "verify", "--insecure-ignore-tlog", "--key", keyPath, ref)
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error verifying signature: %v, output: %s", err, output)
}

// Run the command and capture its output.
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error verifying signature: %v, output: %s", err, output)
return nil
}

return nil
return RetryOperation(ctx, operation)
}

// SaveImage saves image and any signatures/attestations to the store.
func SaveImage(ctx context.Context, s *store.Layout, ref string) error {
operation := func() error {
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

// Ensure that the cosign binary is installed or download it if needed
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

// Command to save/download an image using Cosign.
cmd := exec.Command(cosignBinaryPath, "save", ref, "--dir", s.Root)
cmd := exec.Command(cosignBinaryPath, "save", ref, "--dir", s.Root)
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error adding image to store: %v, output: %s", err, output)
}

// Run the command and capture its output.
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error adding image to store: %v, output: %s", err, output)
return nil
}

return nil
return RetryOperation(ctx, operation)
}

// LoadImage loads store to a remote registry.
func LoadImage(ctx context.Context, s *store.Layout, registry string, ropts content.RegistryOptions) error {
operation := func() error {
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

//Ensure that the cosign binary is installed or download it if needed
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}
cmd := exec.Command(cosignBinaryPath, "load", "--registry", registry, "--dir", s.Root)

// Conditionally add extra registry flags.
if ropts.Insecure {
cmd.Args = append(cmd.Args, "--allow-insecure-registry=true")
}
if ropts.PlainHTTP {
cmd.Args = append(cmd.Args, "--allow-http-registry=true")
}

// Command to upload index to a remote registry using Cosign.
cmd := exec.Command(cosignBinaryPath, "load", "--registry", registry, "--dir", s.Root)
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error copying store: %v, output: %s", err, output)
}

// Conditionally add extra registry flags.
if ropts.Insecure {
cmd.Args = append(cmd.Args, "--allow-insecure-registry=true")
return nil
}
if ropts.PlainHTTP {
cmd.Args = append(cmd.Args, "--allow-http-registry=true")

return RetryOperation(ctx, operation)
}

// RegistryLogin - performs cosign login
func RegistryLogin(ctx context.Context, s *store.Layout, registry string, ropts content.RegistryOptions) error {
operation := func() error {
cosignBinaryPath, err := ensureCosignBinary(ctx, s)
if err != nil {
return err
}

cmd := exec.Command(cosignBinaryPath, "login", registry, "-u", ropts.Username, "-p", ropts.Password)

output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error logging into registry: %v, output: %s", err, output)
}

return nil
}

// Run the command and capture its output.
output, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("error adding image to store: %v, output: %s", err, output)
return RetryOperation(ctx, operation)
}

func RetryOperation(ctx context.Context, operation func() error) error {
l := log.FromContext(ctx)
for attempt := 1; attempt <= maxRetries; attempt++ {
err := operation()
if err == nil {
// If the operation succeeds, return nil (no error).
return nil
}

// Log the error for the current attempt.
l.Errorf("Error (attempt %d/%d): %v", attempt, maxRetries, err)

// If this is not the last attempt, wait before retrying.
if attempt < maxRetries {
time.Sleep(retryDelay)
}
}

return nil
// If all attempts fail, return an error.
return fmt.Errorf("operation failed after %d attempts", maxRetries)
}


// ensureCosignBinary checks if the cosign binary exists in the specified directory and installs it if not.
func ensureCosignBinary(ctx context.Context, s *store.Layout) (string, error) {
l := log.FromContext(ctx)
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