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exec.go
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exec.go
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package errdefs
import (
"context"
"runtime"
"github.com/moby/buildkit/solver"
"github.com/moby/buildkit/util/bklog"
)
// ExecError will be returned when an error is encountered when evaluating an op.
type ExecError struct {
error
Inputs []solver.Result
Mounts []solver.Result
OwnerBorrowed bool
}
func (e *ExecError) Unwrap() error {
return e.error
}
func (e *ExecError) EachRef(fn func(solver.Result) error) (err error) {
m := map[solver.Result]struct{}{}
for _, res := range e.Inputs {
if res == nil {
continue
}
if _, ok := m[res]; ok {
continue
}
m[res] = struct{}{}
if err1 := fn(res); err1 != nil && err == nil {
err = err1
}
}
for _, res := range e.Mounts {
if res == nil {
continue
}
if _, ok := m[res]; ok {
continue
}
m[res] = struct{}{}
if err1 := fn(res); err1 != nil && err == nil {
err = err1
}
}
return err
}
func (e *ExecError) Release() error {
if e.OwnerBorrowed {
return nil
}
err := e.EachRef(func(r solver.Result) error {
r.Release(context.TODO())
return nil
})
e.OwnerBorrowed = true
return err
}
func WithExecError(err error, inputs, mounts []solver.Result) error {
return WithExecErrorWithContext(context.TODO(), err, inputs, mounts)
}
func WithExecErrorWithContext(ctx context.Context, err error, inputs, mounts []solver.Result) error {
if err == nil {
return nil
}
ee := &ExecError{
error: err,
Inputs: inputs,
Mounts: mounts,
}
runtime.SetFinalizer(ee, func(e *ExecError) {
if !e.OwnerBorrowed {
e.EachRef(func(r solver.Result) error {
bklog.G(ctx).Warn("leaked execError detected and released")
r.Release(context.TODO())
return nil
})
}
})
return ee
}