Invalid unmarshalling of prototype

php Xiaobian Yuzai introduces to you "Invalid Unorganization of Prototype". In software development, prototypes are an important concept used to quickly verify and demonstrate design ideas. However, sometimes a prototype is considered ineffective because it may not achieve the desired goals or meet user needs. In this case, we need to invalidate the prototype, find out the problem, and find a solution. This article explores the importance of prototypal ineffective degrouping and how to do it effectively.

Question content

I am trying to decode raw data. But the prototype is not decoded correctly.

This is what I'm doing:

decodedstr, err := base64.stdencoding.decodestring(request.body)
if err != nil {
    panic("malformed input")
}

data := &tracepb.exporttraceservicerequest{}
if err := proto.unmarshal(decodedstr, data); err != nil {
        log.fatalln("failed to parse:", err)
}

log.printf("response - %v", data)

The output is as follows:

response - resource_spans:{resource:{attributes:{key:"service.name"  value:{string_value:"node_app"}}  attributes:{key:"telemetry.sdk.language"  value:{string_value:"nodejs"}}  attributes:{key:"telemetry.sdk.name"  value:{string_value:"opentelemetry"}}  attributes:{key:"telemetry.sdk.version"  value:{string_value:"1.8.0"}}  attributes:{key:"process.pid"  value:{int_value:1}}  attributes:{key:"process.executable.name"  value:{string_value:"node"}}  attributes:{key:"process.command"  value:{string_value:"/usr/app/index.js"}}  attributes:{key:"process.command_line"  value:{string_value:"/usr/local/bin/node /usr/app/index.js"}}  attributes:{key:"process.runtime.version"  value:{string_value:"18.13.0"}}  attributes:{key:"process.runtime.name"  value:{string_value:"nodejs"}}  attributes:{key:"process.runtime.description"  value:{string_value:"node.js"}}}  scope_spans:{scope:{name:"@opentelemetry/instrumentation-express"  version:"0.32.0"}  spans:{trace_id:"\xb5\x81\x91\x8b\x02\x9a/\xf1\x08\x06\xaf~\xea\x9fq\xc0"  span_id:"t\x06\x89m\x1ex\xf9a"  parent_span_id:"?\xbc\x18`o\xa5\xb8\xe1"  name:"middleware - query"  kind:span_kind_internal  start_time_unix_nano:1673434036590614272  end_time_unix_nano:1673434036590671104  attributes:{key:"http.route"  value:{string_value:"/"}}  attributes:{key:"express.name"  value:{string_value:"query"}}  attributes:{key:"express.type"  value:{string_value:"middleware"}}  status:{}}  spans:{trace_id:"\xb5\x81\x91\x8b\x02\x9a/\xf1\x08\x06\xaf~\xea\x9fq\xc0"  span_id:"\xd5c\xf7>\xf6cxz"  parent_span_id:"?\xbc\x18`o\xa5\xb8\xe1"  name:"middleware - expressinit"  kind:span_kind_internal  start_time_unix_nano:1673434036590760704

I don’t know why traceid is displayed like this:

spans:{trace_id:"\xb5\x81\x91\x8b\x02\x9a/\xf1\x08\x06\xaf~\xea\x9fQ\xc0"

I am new to go language. Any help would be greatly appreciated

Workaround

Use the encoding/hex module's hex.EncodeToString() function to convert bytesConvert to hex

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