Go YAML unmarshal doesn't decode all the object structure to a generic interface. Any ideas why?

Question

Why wouldn't the following Go program work? The map is empty after the Unmarshal. Is there any changes that I could do to deserialize this correctly? Or should I end up using yaml.Node?

package main

import (
    "fmt"
    "gopkg.in/yaml.v3"
)

func main() {
    empYaml := `
      employees:
        - id: 11
          name: Irshad
          department: IT
          designation: Product Manager
          address:
            city: Mumba
            state: Maharashtra
            country: India
    `

    var result map[string]interface{}
    yaml.Unmarshal([]byte(empYaml), &result)

    fmt.Println(result)
}

Play URL: https://play.golang.org/p/tG44j15mNjH

Do not ignore the return value of Unmarshal, it'll tell you what's wrong with the input. — Burak Serdar, Dec 05 '19 at 05:19

score 2 · Accepted Answer · answered Dec 05 '19 at 05:59

When I check the error from the call to yaml.Unmarshal I see the error:

2009/11/10 23:00:00 yaml: line 2: found character that cannot start any token

Looks like this may be due to tab characters in the content since YAML forbids tabs.

Remove all tab characters from the YAML content and you should be in good shape. I get the following output:

map[employees:[map[address:map[city:Mumba country:India state:Maharashtra] department:IT designation:Product Manager id:11 name:Irshad]]]

Just did the same based on Burak's comment. Thanks! – Charles Prakash Dasari Dec 05 '19 at 06:04 — Charles Prakash Dasari, Dec 05 '19 at 06:04

Go YAML unmarshal doesn't decode all the object structure to a generic interface. Any ideas why?

1 Answers1