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apache / dubbo-go-hessian2

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how to rewrite attachment

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champly
champly commented May 15, 2020

背景

在 service mesh环境下，需要在 sidecar 中解析dubbo的attachment，并根据需求添加一些自定义的参数进去，就像SetHeader一样，然后重新构建 dubbo 包

问题

如果使用hessian.NewDecoder，传递的参数没有对象是可以的，如果参数中有对象会报错，参考 #163 的解决办法，使用 hessian.NewDecoderWithSkip可以解决，但是重新构建的时候arg类型是interface{},值是nil

解决

能否多提供一个Decode方法，直接返回[]byte内容，重新构建的时候直接encode.Append(arg)就可以重新构建dubbo包

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