drone-webhook/main.go

136 lines
3.2 KiB
Go

package main
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"os"
"text/template"
"github.com/drone/drone-go/drone"
"github.com/drone/drone-go/plugin"
)
func main() {
// plugin settings
var repo = drone.Repo{}
var build = drone.Build{}
var vargs = Webhook{}
// set plugin parameters
plugin.Param("repo", &repo)
plugin.Param("build", &build)
plugin.Param("vargs", &vargs)
// parse the parameters
if err := plugin.Parse(); err != nil {
fmt.Println(err)
os.Exit(1)
}
// set default values
if len(vargs.Method) == 0 {
vargs.Method = "POST"
}
if len(vargs.ContentType) == 0 {
vargs.ContentType = "application/json"
}
// data structure
data := struct {
Repo drone.Repo `json:"repo"`
Build drone.Build `json:"build"`
}{repo, build}
// creates the payload. by default the payload
// is the build details in json format, but a custom
// template may also be used.
var buf bytes.Buffer
if len(vargs.Template) == 0 {
if err := json.NewEncoder(&buf).Encode(&data); err != nil {
fmt.Printf("Error encoding content template. %s\n", err)
os.Exit(1)
}
} else {
t, err := template.New("_").Parse(vargs.Template)
if err != nil {
fmt.Printf("Error parsing content template. %s\n", err)
os.Exit(1)
}
if err := t.Execute(&buf, &data); err != nil {
fmt.Printf("Error executing content template. %s\n", err)
os.Exit(1)
}
}
// build and execute a request for each url.
// all auth, headers, method, template (payload),
// and content_type values will be applied to
// every webhook request.
for i, rawurl := range vargs.Urls {
uri, err := url.Parse(rawurl)
if err != nil {
fmt.Printf("Error parsing hook url. %s\n", err)
os.Exit(1)
}
// vargs.Method defaults to POST, no need to check
b := buf.Bytes()
r := bytes.NewReader(b)
req, err := http.NewRequest(vargs.Method, uri.String(), r)
if err != nil {
fmt.Printf("Error creating http request. %s\n", err)
os.Exit(1)
}
// vargs.ContentType defaults to application/json, no need to check
req.Header.Set("Content-Type", vargs.ContentType)
for key, value := range vargs.Headers {
req.Header.Set(key, value)
}
// set basic auth if a user or user and pass is provided
if len(vargs.Auth.Username) > 0 {
if len(vargs.Auth.Password) > 0 {
req.SetBasicAuth(vargs.Auth.Username, vargs.Auth.Password)
} else {
req.SetBasicAuth(vargs.Auth.Username, "")
}
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
fmt.Printf("Error executing http request. %s\n", err)
os.Exit(1)
}
defer resp.Body.Close()
if vargs.Verbose || os.Getenv("DEBUG") == "true" {
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
// I do not think we need to os.Exit(1) if we are
// unable to read a http response body.
fmt.Printf("Error reading http response body. %s\n", err)
}
// scrub out basic auth pass
/*
if len(vargs.Auth.Password) > 0 {
req.SetBasicAuth(vargs.Auth.Username, "XXXXX")
}
*/
// print out
fmt.Printf("Webhook URL %d\n URL: %s\n METHOD: %s\n HEADERS: %s\n BODY: %s\n RESPONSE STATUS: %s\n RESPONSE: %s\n", i+1, req.URL, req.Method, req.Header, string(b), resp.Status, string(body))
}
}
}