Cody Schroeder created BEAM-4401:
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Summary: beam.Create fails to encode valid elements
Key: BEAM-4401
URL: https://issues.apache.org/jira/browse/BEAM-4401
Project: Beam
Issue Type: Bug
Components: sdk-go
Reporter: Cody Schroeder
Assignee: Cody Schroeder
The following program will panic because part of the proto3 message cannot be
JSON marshalled.
{noformat}
panic: failed to decode data: json: cannot unmarshal object into Go struct
field Path_Node.Specialization of type
internal_go_proto.isPath_Node_Specialization
{noformat}
{code:go}
package main
import (
"context"
"github.com/apache/beam/sdks/go/pkg/beam"
"github.com/apache/beam/sdks/go/pkg/beam/x/beamx"
"github.com/apache/beam/sdks/go/pkg/beam/x/debug"
ipb "kythe.io/kythe/proto/internal_go_proto"
srvpb "kythe.io/kythe/proto/serving_go_proto"
)
func main() {
ctx := context.Background()
beam.Init()
p := beam.NewPipeline()
s := p.Root()
e := &ipb.Path_Node{
// proto3 oneof fields cannot be JSON marshalled
Specialization: &ipb.Path_Node_RawAnchor{&srvpb.RawAnchor{}},
}
els := beam.Create(s, e)
debug.Print(s, els)
if err := beamx.Run(ctx, p); err != nil {
panic(err)
}
}
{code}
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