英文:
Parsing a yaml file with Golang
问题
我正在尝试使用Golang解析一个yaml文件。我定义了以下types：
type DockerNetwork struct {
MyNetwork struct {
driver string
} `yaml:"my_network"`
}
// DockerNetworks represent the docker Networks type
type DockerNetworks struct {
networks []DockerNetwork
}
所以我已经准备好了单元测试：
func TestDockerNetwork(t *testing.T) {
dn := DockerNetworks{}
var data = `
networks:
my_network:
driver: bridge
`
err := yaml.Unmarshal([]byte(data), &dn)
if err != nil {
log.Fatalf("error: %v", err)
t.Error("Could not Unmarshal the data")
}
log.Println(fmt.Sprintf("--- t:\n%v\n\n", dn))
}
我期望它能正常工作，但是我得不到任何输出：
2016/12/14 13:38:12 --- t:
{{}}
我做错了什么？
英文:
I'm trying to parse a yaml file with Golang. I defined the following types:
type DockerNetwork struct {
MyNetwork struct {
driver string
} `yaml:"my_network"`
}
// DockerNetworks represent the docker Networks type
type DockerNetworks struct {
networks []DockerNetwork
}
so I have my unit test in place:
func TestDockerNetwork(t *testing.T) {
dn := DockerNetworks{}
var data = `
networks:
my_network:
driver: bridge
`
err := yaml.Unmarshal([]byte(data), &dn)
if err != nil {
log.Fatalf("error: %v", err)
t.Error("Could not Unmarshal the data")
}
log.Println(fmt.Sprintf("--- t:\n%v\n\n", dn))
}
I expected it to work, however I'm getting no input:
2016/12/14 13:38:12 --- t:
{{}}
what am I doing wrong?
答案1
得分: 2
我的yaml文件是一个docker-compose.yml文件，格式如上所述（部分内容）。我同意Marius的观点，我有未导出的字段，这是一个错误。我使用的解决方案是map：
m := make(map[interface{}]interface{})
err = yaml.Unmarshal([]byte(data), &m)
if err != nil {
log.Fatalf("错误：%v", err)
}
fmt.Printf("--- m:\n%v\n\n", m)
英文:
My yaml file is a docker-compose.yml file, which is in the format described above (part of it). I agree with Marius that I have unexported fields, which is an error. The solution I used was map:
m := make(map[interface{}]interface{})
err = yaml.Unmarshal([]byte(data), &m)
if err != nil {
log.Fatalf("error: %v", err)
}
fmt.Printf("--- m:\n%v\n\n", m)
答案2
得分: 0
根据你提供的内容，我为你进行了翻译：
据我所知，有两个问题，一个是具有未导出字段的数据结构，另一个是与你的数据结构不匹配的测试数据。
类似这样的代码可以帮助你：
type DockerNetwork struct {
MyNetwork struct {
Driver string `yaml:"driver"`
} `yaml:"my_network"`
}
type DockerNetworks struct {
Networks []DockerNetwork `yaml:"networks"`
}
测试数据如下：
networks:
- my_network:
driver: bridge
输出结果如下：
2016/12/14 23:47:23 --- t:
{[{{bridge}}]}
PASS
很难确定你认为的“工作”是什么意思。
英文:
AFAIKT there to things, data structures with unexported fields and test data which doesn't match your data structures.
Something like this would give you a go:
type DockerNetwork struct {
MyNetwork struct {
Driver string `yaml:driver`
} `yaml:"my_network"`
}
type DockerNetworks struct {
Networks []DockerNetwork `yaml:networks`
}
And test data:
networks:
- my_network:
driver: bridge
Gives an output:
2016/12/14 23:47:23 --- t:
{[{{bridge}}]}
PASS
And It's hard to tell, what is "working" in your opinion.
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