71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"net/http"
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"os"
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"strings"
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"time"
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)
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func main() {
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prefix := flag.String("prefix", "", "a string")
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flag.Parse()
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// keys := flag.Args()
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var c = &http.Client{
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Timeout: time.Second * 5,
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}
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req, err := http.NewRequest("GET", "http://metadata/computeMetadata/v1/instance/attributes?recursive=true", nil)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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os.Exit(1)
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}
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req.Header.Add("Metadata-Flavor", "Google")
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res, err := c.Do(req)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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os.Exit(1)
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}
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defer res.Body.Close()
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// data, err := ioutil.ReadAll(res.Body)
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// if err != nil {
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// fmt.Fprint(os.Stderr, err)
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// os.Exit(1)
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// }
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if res.StatusCode != 200 {
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fmt.Fprintf(os.Stderr, "couldn't fetch metadata attributes")
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os.Exit(1)
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}
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items := make(map[string]string)
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vars := make(map[string]string)
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err = json.NewDecoder(res.Body).Decode(&items)
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if err != nil {
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fmt.Fprint(os.Stderr, err)
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os.Exit(1)
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}
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for k, v := range items {
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// matched, err := regexp.MatchString(`a.b`, "aaxbb")
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// if err != nil {
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// fmt.Fprint(os.Stderr, err)
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// os.Exit(1)
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// }
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vars[strings.ToUpper(k)] = v
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}
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for k, v := range vars {
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if *prefix != "" {
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fmt.Printf("%s_%s=%s\n", *prefix, k, v)
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} else {
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fmt.Printf("%s=%s\n", k, v)
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}
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}
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}
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