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This change enables future upgrades of google.golang.org/grpc. Recent changes to google.golang.org/grpc have changed the default proto codec such that it is incompatible with gogoproto: grpc/grpc-go#3958 While `proto.Marshal` does do a check for the Marshal/Unmarshal it appears to do this through reflection methods that will panic on fields using gogoproto.nullable. To avoid this, we install a proto codec that does an interface check before dispatching to proto.Marshal/proto.Unmarshal. Note that I haven't replicated the protobuffer caching that previously existed in google.golang.org/grpc. The referenced change claims removing the caching may be a small performance win; however, they also removed the typecheck that we need to do, so it is unclear. Fixes cockroachdb#60531 Release note: None
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// Copyright 2021 The Cockroach Authors. | ||
// | ||
// Use of this software is governed by the Business Source License | ||
// included in the file licenses/BSL.txt. | ||
// | ||
// As of the Change Date specified in that file, in accordance with | ||
// the Business Source License, use of this software will be governed | ||
// by the Apache License, Version 2.0, included in the file | ||
// licenses/APL.txt. | ||
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package rpc | ||
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import ( | ||
"github.com/gogo/protobuf/proto" | ||
// Used instead of gogo/protobuf/proto for the fallback case | ||
// to match the behavior of the upstream codec in | ||
// google.golang.org/grpc/encoding/proto that we are | ||
// replacing: | ||
// | ||
// https://github.com/grpc/grpc-go/blob/7b167fd6eca1ab8f05ec14085d63197cacd41438/encoding/proto/proto.go | ||
// | ||
gproto "github.com/golang/protobuf/proto" | ||
"google.golang.org/grpc/encoding" | ||
) | ||
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const name = "proto" | ||
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type codec struct{} | ||
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var _ encoding.Codec = codec{} | ||
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func (codec) Marshal(v interface{}) ([]byte, error) { | ||
if pm, ok := v.(proto.Marshaler); ok { | ||
return pm.Marshal() | ||
} | ||
return gproto.Marshal(v.(gproto.Message)) | ||
} | ||
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func (codec) Unmarshal(data []byte, v interface{}) error { | ||
if pm, ok := v.(proto.Unmarshaler); ok { | ||
return pm.Unmarshal(data) | ||
} | ||
return gproto.Unmarshal(data, v.(gproto.Message)) | ||
} | ||
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func (codec) Name() string { | ||
return name | ||
} |
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// Copyright 2021 The Cockroach Authors. | ||
// | ||
// Use of this software is governed by the Business Source License | ||
// included in the file licenses/BSL.txt. | ||
// | ||
// As of the Change Date specified in that file, in accordance with | ||
// the Business Source License, use of this software will be governed | ||
// by the Apache License, Version 2.0, included in the file | ||
// licenses/APL.txt. | ||
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package rpc | ||
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import ( | ||
"testing" | ||
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"github.com/cockroachdb/cockroach/pkg/roachpb" | ||
"github.com/cockroachdb/cockroach/pkg/util/leaktest" | ||
"github.com/stretchr/testify/require" | ||
"go.etcd.io/etcd/raft/v3/raftpb" | ||
"google.golang.org/grpc/health/grpc_health_v1" | ||
) | ||
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func TestCodecMarshalUnmarshal(t *testing.T) { | ||
defer leaktest.AfterTest(t)() | ||
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testCodec := codec{} | ||
for _, test := range []struct { | ||
name string | ||
msgBuilder func() interface{} | ||
}{ | ||
{"rpc.PingRequest", func() interface{} { return &PingRequest{} }}, | ||
{"raftpb.Message", func() interface{} { return &raftpb.Message{} }}, | ||
{"grpc_health_v1.HealthCheckRequest", func() interface{} { return &grpc_health_v1.HealthCheckRequest{} }}, | ||
{"roachpb.GetRequest", func() interface{} { return &roachpb.GetRequest{} }}, | ||
} { | ||
t.Run(test.name, func(t *testing.T) { | ||
marshaled, err := testCodec.Marshal(test.msgBuilder()) | ||
require.NoError(t, err, "marshal failed") | ||
err = testCodec.Unmarshal(marshaled, test.msgBuilder()) | ||
require.NoError(t, err, "unmarshal failed") | ||
}) | ||
} | ||
} |
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