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helpers_docker.go
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/
helpers_docker.go
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package registry
import (
"context"
"encoding/json"
"errors"
"fmt"
"io"
"os"
"path"
"github.com/scaleway/scaleway-sdk-go/scw"
"github.com/scaleway/scaleway-cli/v2/internal/core"
)
const (
dockerConfigDir = ".docker"
dockerConfigFilename = "config.json"
dockerCredHelpersKey = "credHelpers"
)
func writeHelperScript(scriptPath string, scriptContent string) error {
scriptDir := path.Dir(scriptPath)
stats, err := os.Stat(scriptDir)
if err != nil {
return err
}
if !stats.IsDir() {
return fmt.Errorf("%s is not a directory", scriptDir)
}
f, err := os.OpenFile(scriptPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
if err != nil {
return err
}
defer f.Close()
_, err = f.Write([]byte(scriptContent))
if err != nil {
return err
}
return nil
}
func setupDockerConfigFile(ctx context.Context, registries []string, binaryName string) error {
homeDir := core.ExtractUserHomeDir(ctx)
dockerConfigFilePath := path.Join(homeDir, dockerConfigDir, dockerConfigFilename)
if _, err := os.Stat(dockerConfigFilePath); err != nil {
if !errors.Is(err, os.ErrNotExist) {
return err
}
if err := os.MkdirAll(path.Dir(dockerConfigFilePath), 0755); err != nil {
return err
}
}
f, err := os.OpenFile(dockerConfigFilePath, os.O_RDWR|os.O_CREATE, 0600)
if err != nil {
return err
}
defer f.Close()
dockerConfig := map[string]interface{}{}
dockerConfigRaw, err := io.ReadAll(f)
if err != nil {
return err
}
if len(dockerConfigRaw) == 0 {
dockerConfigRaw = []byte("{}")
}
err = json.Unmarshal(dockerConfigRaw, &dockerConfig)
if err != nil {
return err
}
credHelpers := map[string]interface{}{}
if ch, ok := dockerConfig[dockerCredHelpersKey]; ok {
credHelpers = ch.(map[string]interface{})
}
for _, reg := range registries {
credHelpers[reg] = binaryName
}
dockerConfig[dockerCredHelpersKey] = credHelpers
err = f.Truncate(0)
if err != nil {
return err
}
_, err = f.Seek(0, 0)
if err != nil {
return err
}
encoder := json.NewEncoder(f)
encoder.SetIndent("", " ")
err = encoder.Encode(dockerConfig)
if err != nil {
return err
}
return nil
}
func getRegistryEndpoint(region scw.Region) string {
return endpointPrefix + region.String() + endpointSuffix
}