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dagger/plan/task/merge.go
Tom Chauveau 19c0f999f4
Fix export cache issue
Resolve #1551 and #1020.
We are never returning the result of solved operations so Buildkit could not
cache the layer.
This commit implements a simple system to forward operations' result to the
main build to cache it.

Signed-off-by: Vasek - Tom C <tom.chauveau@epitech.eu>
2022-03-31 20:36:50 +02:00

49 lines
1014 B
Go

package task
import (
"context"
"github.com/moby/buildkit/client/llb"
"go.dagger.io/dagger/compiler"
"go.dagger.io/dagger/plancontext"
"go.dagger.io/dagger/solver"
)
func init() {
Register("Merge", func() Task { return &mergeTask{} })
}
type mergeTask struct {
}
func (t *mergeTask) Run(ctx context.Context, pctx *plancontext.Context, s *solver.Solver, v *compiler.Value) (*compiler.Value, error) {
inputs, err := v.Lookup("inputs").List()
if err != nil {
return nil, err
}
inputStates := make([]llb.State, len(inputs))
for i, input := range inputs {
inputFS, err := pctx.FS.FromValue(input)
if err != nil {
return nil, err
}
inputState, err := inputFS.State()
if err != nil {
return nil, err
}
inputStates[i] = inputState
}
st := llb.Merge(inputStates)
result, err := s.Solve(ctx, st, pctx.Platform.Get())
if err != nil {
return nil, err
}
fs := pctx.FS.New(result)
return compiler.NewValue().FillFields(map[string]interface{}{
"output": fs.MarshalCUE(),
})
}