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importcache.go
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importcache.go
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package build
import (
"encoding/csv"
"strings"
"github.com/moby/buildkit/client"
"github.com/moby/buildkit/util/bklog"
"github.com/pkg/errors"
)
func parseImportCacheCSV(s string) (client.CacheOptionsEntry, error) {
im := client.CacheOptionsEntry{
Type: "",
Attrs: map[string]string{},
}
csvReader := csv.NewReader(strings.NewReader(s))
fields, err := csvReader.Read()
if err != nil {
return im, err
}
for _, field := range fields {
key, value, ok := strings.Cut(field, "=")
if !ok {
return im, errors.Errorf("invalid value %s", field)
}
key = strings.ToLower(key)
switch key {
case "type":
im.Type = value
default:
im.Attrs[key] = value
}
}
if im.Type == "" {
return im, errors.New("--import-cache requires type=<type>")
}
if im.Type == "gha" {
return loadGithubEnv(im)
}
return im, nil
}
// ParseImportCache parses --import-cache
func ParseImportCache(importCaches []string) ([]client.CacheOptionsEntry, error) {
var imports []client.CacheOptionsEntry
for _, importCache := range importCaches {
legacy := !strings.Contains(importCache, "type=")
if legacy {
// Deprecated since BuildKit v0.4.0, but no plan to remove: https://github.com/moby/buildkit/pull/2783#issuecomment-1093449772
bklog.L.Warn("--import-cache <ref> is deprecated. Please use --import-cache type=registry,ref=<ref>,<opt>=<optval>[,<opt>=<optval>] instead.")
imports = append(imports, client.CacheOptionsEntry{
Type: "registry",
Attrs: map[string]string{"ref": importCache},
})
} else {
im, err := parseImportCacheCSV(importCache)
if err != nil {
return nil, err
}
imports = append(imports, im)
}
}
return imports, nil
}