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dagger/plancontext/fs.go
Andrea Luzzardi 5b7b1cab79 Migrate dagger.#Secret and dagger.#Stream to new format
- Refactored to keep every transformation of built-in types (e.g. FS,
  Secret, etc) to/from CUE in the same place (plancontext)
- dagger.#Service and dagger.#Secret are now following the new FS-like format
  (e.g. `_service: id: string`)
- Backward compatibility
- dagger.#Stream is now an alias for dagger.#Service

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
2021-12-01 17:33:35 -08:00

72 lines
1.2 KiB
Go

package plancontext
import (
"fmt"
"sync"
"cuelang.org/go/cue"
"github.com/google/uuid"
bkgw "github.com/moby/buildkit/frontend/gateway/client"
"go.dagger.io/dagger/compiler"
)
var (
fsIDPath = cue.MakePath(
cue.Hid("_fs", "alpha.dagger.io/dagger"),
cue.Str("id"),
)
)
type FS struct {
id string
result bkgw.Reference
}
func (fs *FS) Result() bkgw.Reference {
return fs.result
}
func (fs *FS) Value() *compiler.Value {
v := compiler.NewValue()
if err := v.FillPath(fsIDPath, fs.id); err != nil {
panic(err)
}
return v
}
type fsContext struct {
l sync.RWMutex
store map[string]*FS
}
func (c *fsContext) New(result bkgw.Reference) *FS {
c.l.Lock()
defer c.l.Unlock()
fs := &FS{
// FIXME: get a hash from result instead
id: uuid.New().String(),
result: result,
}
c.store[fs.id] = fs
return fs
}
func (c *fsContext) FromValue(v *compiler.Value) (*FS, error) {
c.l.RLock()
defer c.l.RUnlock()
id, err := v.LookupPath(fsIDPath).String()
if err != nil {
return nil, fmt.Errorf("invalid FS %q: %w", v.Path(), err)
}
fs, ok := c.store[id]
if !ok {
return nil, fmt.Errorf("fs %q not found", id)
}
return fs, nil
}