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main.go
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main.go
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package main
import (
"errors"
"fmt"
"log"
"net/http"
)
const (
secretPath = "/etc/secret/secret.toml"
cmPath = "/etc/config/configmap.toml"
)
func main() {
log.Println("Starting server at port 8080.")
http.HandleFunc("/", baseHandler)
http.HandleFunc("/cm", cmHandler)
http.HandleFunc("/secret", secretHandler)
log.Fatal(http.ListenAndServe(":8080", nil))
}
func requestCheck(r *http.Request) error {
if r.Method != "GET" {
return errors.New("only GET requests are supported")
}
return nil
}
func baseHandler(w http.ResponseWriter, r *http.Request) {
err := requestCheck(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
fmt.Fprintf(w, "<h1>Paths</h1><p>Look at what is saved in a secret at <a href='http://%s/secret'>%[1]s/secret</a> or in a configmap at <a href='http://%[1]s/cm'>%[1]s/secret</a>.</p>", r.Host)
}
func cmHandler(w http.ResponseWriter, r *http.Request) {
err := requestCheck(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
msg, err := readMessage(cmPath)
if err != nil {
http.Error(w, err.Error(), http.StatusProcessing)
return
}
fmt.Fprintf(w, "<h1>ConfigMap Message</h1><p>%s</p>", msg)
}
func secretHandler(w http.ResponseWriter, r *http.Request) {
err := requestCheck(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
msg, err := readMessage(secretPath)
if err != nil {
http.Error(w, err.Error(), http.StatusProcessing)
return
}
fmt.Fprintf(w, "<h1>Secret Message</h1><p>%s</p>", msg)
}