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package main
import (
"bytes"
"encoding/json"
"fmt"
"gopkg.in/yaml.v2"
"io/ioutil"
"net/http"
"os"
"text/template"
)
type Hook struct {
Url string
Schema map[string]string
}
func (h *Hook) String() string {
return fmt.Sprintf("Hook: Url: %s Schema: %s",
h.Url, h.Schema)
}
func readConf(fn string, cfg map[string]*Hook) error {
if fn == "" {
fn = os.Getenv("HOME") + "/.hook.yml"
}
content, err := ioutil.ReadFile(fn)
if err != nil {
return err
}
err = yaml.Unmarshal(content, cfg)
if err != nil {
return err
}
return nil
}
func help() {
n := os.Args[0]
fmt.Fprintf(os.Stderr, `Usage: %s [-c cfg] -n name [-v varName varVal]...
For example:
echo "Contents!" | %s -c hook.yml -n discord -v hostname "$(hostname)" \
-v message "Backup failure"
See the full documentation on generating the required configuration file.
`, n, n)
os.Exit(1)
}
func (h *Hook) ProcessSchema(data interface{}) error {
for k, v := range h.Schema {
buf := &bytes.Buffer{}
templ, err := template.New("schema").Parse(v)
if err != nil {
return err
}
err = templ.Execute(buf, data)
if err != nil {
return err
}
// Need to check that this gets modified properly
result, err := ioutil.ReadAll(buf)
if err != nil {
return err
}
h.Schema[k] = string(result)
}
return nil
}
func main() {
cfgFN := "hook.yml"
hookName := ""
vars := map[string]string{}
// A bit of an unusual loop to handle the unusual way that the
// arguments work
for i := 1; i < len(os.Args); i += 1 {
switch os.Args[i] {
case "-c", "-config", "--config":
i += 1
cfgFN = os.Args[i]
case "-n", "-name", "--name":
i += 1
hookName = os.Args[i]
case "-v", "-var", "--var":
vars[os.Args[i+1]] = os.Args[i+2]
i += 2
default:
help()
}
}
cfg := make(map[string]*Hook)
err := readConf(cfgFN, cfg)
if hookName == "" {
help()
} else if _, ok := cfg[hookName]; !ok {
fmt.Fprintf(os.Stderr, "Hook name \"%s\" does not exist!\n", hookName)
help()
}
// fmt.Println(hookName)
// fmt.Println(cfg)
// fmt.Println(err)
// fmt.Println(vars)
hook := cfg[hookName]
// fmt.Println(hook)
stdin, _ := ioutil.ReadAll(os.Stdin)
err = hook.ProcessSchema(struct {
Vars map[string]string
Stdin string
}{
Vars: vars,
Stdin: string(stdin),
})
fmt.Println(hook)
fmt.Println(err)
body, err := json.Marshal(hook.Schema)
if err != nil {
fmt.Fprintln(os.Stderr, err)
}
buf := bytes.NewBuffer(body)
resp, err := http.Post(hook.Url, "Application/json", buf)
fmt.Println(resp)
}
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