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yield.go
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yield.go
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package universe
import (
"github.com/wolffcm/flux"
"github.com/wolffcm/flux/codes"
"github.com/wolffcm/flux/internal/errors"
"github.com/wolffcm/flux/plan"
"github.com/wolffcm/flux/runtime"
)
const YieldKind = "yield"
type YieldOpSpec struct {
Name string `json:"name"`
}
func init() {
yieldSignature := runtime.MustLookupBuiltinType("universe", "yield")
runtime.RegisterPackageValue("universe", YieldKind, flux.MustValue(flux.FunctionValueWithSideEffect(YieldKind, createYieldOpSpec, yieldSignature)))
flux.RegisterOpSpec(YieldKind, newYieldOp)
plan.RegisterProcedureSpecWithSideEffect(YieldKind, newYieldProcedure, YieldKind)
}
func createYieldOpSpec(args flux.Arguments, a *flux.Administration) (flux.OperationSpec, error) {
if err := a.AddParentFromArgs(args); err != nil {
return nil, err
}
spec := new(YieldOpSpec)
name, ok, err := args.GetString("name")
if err != nil {
return nil, err
} else if ok {
spec.Name = name
} else {
spec.Name = plan.DefaultYieldName
}
return spec, nil
}
func newYieldOp() flux.OperationSpec {
return new(YieldOpSpec)
}
func (s *YieldOpSpec) Kind() flux.OperationKind {
return YieldKind
}
type YieldProcedureSpec struct {
plan.DefaultCost
Name string `json:"name"`
}
func newYieldProcedure(qs flux.OperationSpec, _ plan.Administration) (plan.ProcedureSpec, error) {
if spec, ok := qs.(*YieldOpSpec); ok {
return &YieldProcedureSpec{Name: spec.Name}, nil
}
return nil, errors.Newf(codes.Internal, "invalid spec type %T", qs)
}
func (s *YieldProcedureSpec) Kind() plan.ProcedureKind {
return YieldKind
}
func (s *YieldProcedureSpec) Copy() plan.ProcedureSpec {
return &YieldProcedureSpec{Name: s.Name}
}
func (s *YieldProcedureSpec) YieldName() string {
return s.Name
}