encoding/proto: simplify & optimize proto codec #3958
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I like this simplification but it causes error when trying to marshal |
morningsend
reviewed
Feb 5, 2021
| func (codec) Marshal(v interface{}) ([]byte, error) { | ||
| if pm, ok := v.(proto.Marshaler); ok { |
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This is breaking existing code generate with gogoproto.customtype = "MyType", where a user can write custom marshaling/unmarshaling code to have more control. IMHO should not be removed.
https://github.com/gogo/protobuf/blob/master/custom_types.md#custom-type-method-signatures
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gogoproto is not officially supported by gRPC-Go.
If you want a codec that suits your needs better, it's easy to install your own. Just copy/paste this code into another package, update the parts that are important, and import it in your main package after any grpc imports. (If you don't control main, you can give it a new name and use the Codec Call-/Dial-/Server- Options.)
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Ok thanks, I will give it a try. I have also created an issue about this. Please feel free to close it #4192 I will also comment the solution there after testing it.
morningsend
reviewed
Feb 5, 2021
| protoMsg := v.(proto.Message) | ||
| protoMsg.Reset() | ||
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| if pu, ok := protoMsg.(proto.Unmarshaler); ok { |
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Same problem, removing this will break use case of gogoproto.customtype = "MyType"
stevendanna
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Feb 18, 2021
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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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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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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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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61333: rpc: install custom proto codec r=[erikgrinaker,pbardea] a=stevendanna 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 #60531 Release note: None Co-authored-by: Steven Danna <danna@cockroachlabs.com>
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Adopt recommendation in #3400 to simplify the proto codec; it seems the buffer pool is no longer buying us any performance wins.
Performance #s:
First run:
Second run:
This appears to provide slightly better performance on average, and is considerably simpler, and would provide a lower memory footprint due to the lack of a buffer pool.
Related to #3932