101 lines
1.8 KiB
Go
101 lines
1.8 KiB
Go
package plancontext
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import (
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"fmt"
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"sync"
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"cuelang.org/go/cue"
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"github.com/google/uuid"
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"github.com/moby/buildkit/client/llb"
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bkgw "github.com/moby/buildkit/frontend/gateway/client"
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"go.dagger.io/dagger/compiler"
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"go.dagger.io/dagger/pkg"
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)
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var (
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fsIDPath = cue.MakePath(
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cue.Str("$dagger"),
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cue.Str("fs"),
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cue.Hid("_id", pkg.DaggerPackage),
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)
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)
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func IsFSValue(v *compiler.Value) bool {
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return v.LookupPath(fsIDPath).Exists()
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}
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type FS struct {
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id string
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result bkgw.Reference
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}
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func (fs *FS) Result() bkgw.Reference {
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return fs.result
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}
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func (fs *FS) State() (llb.State, error) {
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if fs.Result() == nil {
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return llb.Scratch(), nil
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}
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return fs.Result().ToState()
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}
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func (fs *FS) MarshalCUE() *compiler.Value {
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v := compiler.NewValue()
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if fs.result == nil {
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if err := v.FillPath(fsIDPath, nil); err != nil {
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panic(err)
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}
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} else {
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if err := v.FillPath(fsIDPath, fs.id); err != nil {
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panic(err)
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}
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}
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return v
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}
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type fsContext struct {
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l sync.RWMutex
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store map[string]*FS
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}
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func (c *fsContext) New(result bkgw.Reference) *FS {
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c.l.Lock()
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defer c.l.Unlock()
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fs := &FS{
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// FIXME: get a hash from result instead
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id: uuid.New().String(),
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result: result,
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}
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c.store[fs.id] = fs
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return fs
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}
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func (c *fsContext) FromValue(v *compiler.Value) (*FS, error) {
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c.l.RLock()
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defer c.l.RUnlock()
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if !v.LookupPath(fsIDPath).IsConcrete() {
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return nil, fmt.Errorf("invalid FS at path %q: FS is not set", v.Path())
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}
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// This is #Scratch, so we'll return an empty FS
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if v.LookupPath(fsIDPath).Kind() == cue.NullKind {
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return &FS{}, nil
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}
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id, err := v.LookupPath(fsIDPath).String()
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if err != nil {
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return nil, fmt.Errorf("invalid FS at path %q: %w", v.Path(), err)
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}
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fs, ok := c.store[id]
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if !ok {
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return nil, fmt.Errorf("fs %q not found", id)
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}
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return fs, nil
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}
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