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get_option.go
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get_option.go
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package debug
import (
"context"
"github.com/influxdata/flux/codes"
"github.com/influxdata/flux/internal/errors"
"github.com/influxdata/flux/interpreter"
"github.com/influxdata/flux/runtime"
"github.com/influxdata/flux/semantic"
"github.com/influxdata/flux/values"
)
func getStringArgument(args values.Object, name string) (string, error) {
v, ok := args.Get(name)
if !ok {
return "", errors.Newf(codes.Invalid, "missing argument %s", name)
}
if v.Type().Nature() != semantic.String {
return "", errors.Newf(codes.Invalid, "cannot convert argument of type %v to string", v.Type().Nature())
}
return v.Str(), nil
}
func init() {
name := "getOption"
runtime.RegisterPackageValue("internal/debug", name, values.NewFunction(
name,
runtime.MustLookupBuiltinType("internal/debug", name),
func(ctx context.Context, args values.Object) (values.Value, error) {
pkg, err := getStringArgument(args, "pkg")
if err != nil {
return nil, err
}
name, err := getStringArgument(args, "name")
if err != nil {
return nil, err
}
v, ok := interpreter.GetOption(ctx, pkg, name)
if !ok {
return nil, errors.Newf(codes.Invalid, "option does not exist")
}
return v, nil
}, false,
))
}