move git stuff out of main

README.md

@@ -34,7 +34,8 @@ Commit: <Pull-Request Head Commit Hash>
 ## Issue Comment Event
 
 ```
-X-Interceptor-Comment-Action: "/test-deploy"
+X-Interceptor-Comment: "/test-deploy"
+X-Interceptor-Comment-Action: []string{"created"}
 X-Interceptor-Label: "test-deploy:#aabbcc"
 X-Interceptor-Remove-Labels: []string{"test", "deploy"}
 ```

git.go

@@ -0,0 +1,219 @@
+// Copyright (C) 2019 Marius Schellenberger
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
+)
+
+const (
+	contentType = "Content-Type"
+	jsonType    = "application/json"
+
+	secretName = "git-auth"
+)
+
+type Git struct {
+	sec typedcorev1.SecretInterface
+	cl  *http.Client
+}
+
+func (g *Git) getSecret(host string) (username, password string, err error) {
+	sec, err := g.sec.Get(secretName, metav1.GetOptions{})
+	if err != nil {
+		return
+	}
+	s, ok := sec.Data[host]
+	if !ok {
+		err = fmt.Errorf("no key found for host %s in secret %s/%s", host, sec.Namespace, sec.Name)
+		return
+	}
+	a := strings.SplitN(string(s), ":", 2)
+	if len(a) < 2 {
+		err = fmt.Errorf("missing credentials for host %s in secret %s/%s", host, sec.Namespace, sec.Name)
+		return
+	}
+	username = a[0]
+	password = a[1]
+	return
+}
+
+func (g *Git) send(req *http.Request) (*http.Response, error) {
+	user, pass, err := g.getSecret(req.URL.Host)
+	if err != nil {
+		return nil, err
+	}
+	req.SetBasicAuth(user, pass)
+	req.Header.Set(contentType, jsonType)
+	return g.cl.Do(req)
+}
+
+func (g *Git) getPullRequest(repo Repository, api, id string) (pr PullRequest, err error) {
+	u, err := url.Parse(repo.CloneURL)
+	if err != nil {
+		return
+	}
+	u.Path = strings.Join([]string{api, "repos",
+		repo.Owner.Login, repo.Name,
+		"pulls", id}, "/")
+	req, err := http.NewRequest("GET", u.String(), nil)
+	if err != nil {
+		return
+	}
+	resp, err := g.send(req)
+	if err != nil {
+		return
+	}
+	if resp.StatusCode != http.StatusOK {
+		err = errors.New("error getting pull request")
+		return
+	}
+	_, err = readBody(resp.Body, &pr)
+	return
+}
+
+func (g *Git) addLabel(repo Repository, api, label, color string) (labelID int64, err error) {
+	labelID = -1
+	u, err := url.Parse(repo.CloneURL)
+	if err != nil {
+		err = fmt.Errorf("error parsing repo URL: %s", err)
+		return
+	}
+	repoLabels := strings.Join([]string{api, "repos",
+		repo.Owner.Login, repo.Name,
+		"labels"}, "/")
+	u.Path = repoLabels
+	req, err := http.NewRequest("GET", u.String(), nil)
+	if err != nil {
+		return
+	}
+
+	resp, err := g.send(req)
+	if err != nil {
+		err = fmt.Errorf("error getting labels of %s: %s", u, err)
+		return
+	}
+	if resp.StatusCode != http.StatusOK {
+		err = fmt.Errorf("error getting labels of %s", u)
+		return
+	}
+	var labels []Label
+	_, err = readBody(resp.Body, &labels)
+	if err != nil {
+		return
+	}
+	for _, l := range labels {
+		if l.Name == label {
+			labelID = l.ID
+			break
+		}
+	}
+	if labelID >= 0 {
+		return
+	}
+	buf := new(bytes.Buffer)
+	l := &Label{Name: label, Color: color}
+	err = json.NewEncoder(buf).Encode(l)
+	if err != nil {
+		return
+	}
+	req, err = http.NewRequest("POST", u.String(), buf)
+	if err != nil {
+		return
+	}
+
+	resp, err = g.send(req)
+	if err != nil {
+		err = fmt.Errorf("error creating label %s for %s: %s", label, u, err)
+		return
+	}
+	if resp.StatusCode != http.StatusCreated {
+		err = fmt.Errorf("error creating label %s for %s", label, u)
+	}
+	var createdLabel Label
+	_, err = readBody(resp.Body, &createdLabel)
+	labelID = createdLabel.ID
+	return
+}
+
+func (g *Git) setLabel(repo Repository, api, id, label, color string, remove []string) (err error) {
+	labelID, err := g.addLabel(repo, api, label, color)
+	if err != nil {
+		return
+	}
+	u, err := url.Parse(repo.CloneURL)
+	if err != nil {
+		return
+	}
+
+	u.Path = strings.Join([]string{api, "repos",
+		repo.Owner.Login, repo.Name,
+		"issues", id, "labels"}, "/")
+	req, err := http.NewRequest("GET", u.String(), nil)
+	if err != nil {
+		return
+	}
+	resp, err := g.send(req)
+	if err != nil {
+		return fmt.Errorf("error getting issue labels of %s: %s", u, err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("error getting issue labels of %s", u)
+	}
+	var labels []Label
+	_, err = readBody(resp.Body, &labels)
+	if err != nil {
+		return
+	}
+	plint := &PostLabelsInt{[]int64{labelID}}
+	plstring := &PostLabelsString{[]string{label}}
+	var rm, found bool
+	for _, l := range labels {
+		if contains(remove, l.Name) {
+			rm = true
+		} else {
+			if l.Name == label {
+				found = true
+			}
+			plint.Labels = append(plint.Labels, l.ID)
+			plstring.Labels = append(plstring.Labels, l.Name)
+		}
+	}
+	if !rm && found {
+		return
+	}
+
+	buf := new(bytes.Buffer)
+	switch api {
+	case githubAPI:
+		err = json.NewEncoder(buf).Encode(plstring)
+	case giteaAPI:
+		err = json.NewEncoder(buf).Encode(plint)
+	}
+	if err != nil {
+		return
+	}
+	req, err = http.NewRequest("PUT", u.String(), buf)
+	if err != nil {
+		return
+	}
+
+	resp, err = g.send(req)
+	if err != nil {
+		return fmt.Errorf("error setting issue label %s for %s: %s", label, u, err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		b, _ := readBody(resp.Body, nil)
+		err = fmt.Errorf("error setting issue label %s for %s: %s", label, u, string(b))
+	}
+	return
+}

helper.go

@@ -80,6 +80,8 @@ func readBody(r io.ReadCloser, i interface{}) (body []byte, err error) {
 	if debug {
 		log.Printf("debug: %s", string(body))
 	}
+	if i != nil {
 		err = json.Unmarshal(body, i)
+	}
 	return
 }

main.go

@@ -3,24 +3,16 @@
 package main
 
 import (
-	"bytes"
-	"encoding/json"
-	"errors"
-	"fmt"
 	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
-	"net/url"
 	"reflect"
 	"regexp"
-	"strings"
 	"time"
-
 	//corev1 "k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
 	"k8s.io/client-go/kubernetes"
-	typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/client-go/rest"
 )
 
@@ -28,230 +20,25 @@ var debug = false
 
 const (
 	prAction           = "X-Interceptor-Pr-Action"
-	pushAction         = "X-Interceptor-Push-Action"
+	pushRef            = "X-Interceptor-Push-Ref"
+	commentHeader      = "X-Interceptor-Comment"
 	commentAction      = "X-Interceptor-Comment-Action"
 	labelHeader        = "X-Interceptor-Label"
 	removeLabelsHeader = "X-Interceptor-Remove-Labels"
 
-	contentType = "Content-Type"
-	jsonType    = "application/json"
-
 	githubEvent = "X-GitHub-Event"
 	giteaEvent  = "X-Gitea-Event"
 
 	issueHeader  = "Issue"
 	commitHeader = "Commit"
-
-	secretName = "git-auth"
 )
 
 func init() {
 	log.SetFlags(log.Flags() | log.Lshortfile)
 }
 
-func (h *Handler) getSecret(host string) (username, password string, err error) {
-	sec, err := h.sec.Get(secretName, metav1.GetOptions{})
-	if err != nil {
-		return
-	}
-	s, ok := sec.Data[host]
-	if !ok {
-		err = fmt.Errorf("no key found for host %s in secret %s/%s", host, sec.Namespace, sec.Name)
-		return
-	}
-	a := strings.SplitN(string(s), ":", 2)
-	if len(a) < 2 {
-		err = fmt.Errorf("missing credentials for host %s in secret %s/%s", host, sec.Namespace, sec.Name)
-		return
-	}
-	username = a[0]
-	password = a[1]
-	return
-}
-
-func (h *Handler) getPullRequest(repo Repository, api, id string) (*PullRequest, error) {
-	u, err := url.Parse(repo.CloneURL)
-	if err != nil {
-		return nil, err
-	}
-	u.Path = strings.Join([]string{api, "repos",
-		repo.Owner.Login, repo.Name,
-		"pulls", id}, "/")
-	req, err := http.NewRequest("GET", u.String(), nil)
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Set(contentType, jsonType)
-
-	user, pass, err := h.getSecret(u.Host)
-	if err != nil {
-		return nil, err
-	}
-	req.SetBasicAuth(user, pass)
-
-	resp, err := h.cl.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	if resp.StatusCode != http.StatusOK {
-		return nil, errors.New("error getting pull request")
-	}
-	pr := new(PullRequest)
-	_, err = readBody(resp.Body, pr)
-	if err != nil {
-		return nil, err
-	}
-	return pr, nil
-}
-
-func (h *Handler) addLabel(repo Repository, api, label, color string) (labelID int64, err error) {
-	labelID = -1
-	u, err := url.Parse(repo.CloneURL)
-	if err != nil {
-		err = fmt.Errorf("error parsing repo URL: %s", err)
-		return
-	}
-	repoLabels := strings.Join([]string{api, "repos",
-		repo.Owner.Login, repo.Name,
-		"labels"}, "/")
-	u.Path = repoLabels
-	req, err := http.NewRequest("GET", u.String(), nil)
-	if err != nil {
-		return
-	}
-	user, pass, err := h.getSecret(u.Host)
-	if err != nil {
-		return
-	}
-	req.SetBasicAuth(user, pass)
-	req.Header.Set(contentType, jsonType)
-
-	resp, err := h.cl.Do(req)
-	if err != nil {
-		err = fmt.Errorf("error getting labels of %s: %s", u, err)
-		return
-	}
-	if resp.StatusCode != http.StatusOK {
-		err = fmt.Errorf("error getting labels of %s", u)
-		return
-	}
-	var labels []Label
-	_, err = readBody(resp.Body, &labels)
-	if err != nil {
-		return
-	}
-	for _, l := range labels {
-		if l.Name == label {
-			labelID = l.ID
-			break
-		}
-	}
-	if labelID >= 0 {
-		return
-	}
-	buf := new(bytes.Buffer)
-	l := &Label{Name: label, Color: color}
-	err = json.NewEncoder(buf).Encode(l)
-	if err != nil {
-		return
-	}
-	req, err = http.NewRequest("POST", u.String(), buf)
-	if err != nil {
-		return
-	}
-	req.Header.Set(contentType, jsonType)
-	req.SetBasicAuth(user, pass)
-
-	resp, err = h.cl.Do(req)
-	if err != nil {
-		err = fmt.Errorf("error creating label %s for %s: %s", label, u, err)
-		return
-	}
-	if resp.StatusCode != http.StatusCreated {
-		err = fmt.Errorf("error creating label %s for %s", label, u)
-	}
-	var createdLabel Label
-	_, err = readBody(resp.Body, &createdLabel)
-	labelID = createdLabel.ID
-	return
-}
-
-func (h *Handler) setLabel(repo Repository, api, id, label, color string, remove []string) (err error) {
-	labelID, err := h.addLabel(repo, api, label, color)
-	if err != nil {
-		return
-	}
-	u, err := url.Parse(repo.CloneURL)
-	if err != nil {
-		return
-	}
-
-	u.Path = strings.Join([]string{api, "repos",
-		repo.Owner.Login, repo.Name,
-		"issues", id, "labels"}, "/")
-	req, err := http.NewRequest("GET", u.String(), nil)
-	if err != nil {
-		return
-	}
-	user, pass, err := h.getSecret(u.Host)
-	if err != nil {
-		return
-	}
-	req.SetBasicAuth(user, pass)
-	req.Header.Set(contentType, jsonType)
-	resp, err := h.cl.Do(req)
-	if err != nil {
-		return fmt.Errorf("error getting issue labels of %s: %s", u, err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("error getting issue labels of %s", u)
-	}
-	var labels []Label
-	_, err = readBody(resp.Body, &labels)
-	if err != nil {
-		return
-	}
-	pl := &PostLabels{[]int64{labelID}}
-	var rm, found bool
-	for _, l := range labels {
-		if contains(remove, l.Name) {
-			rm = true
-		} else {
-			if l.Name == label {
-				found = true
-			}
-			pl.Labels = append(pl.Labels, l.ID)
-		}
-	}
-	if !rm && found {
-		return
-	}
-
-	buf := new(bytes.Buffer)
-	err = json.NewEncoder(buf).Encode(pl)
-	if err != nil {
-		return
-	}
-	req, err = http.NewRequest("PUT", u.String(), buf)
-	if err != nil {
-		return
-	}
-	req.SetBasicAuth(user, pass)
-	req.Header.Set(contentType, jsonType)
-
-	resp, err = h.cl.Do(req)
-	if err != nil {
-		return fmt.Errorf("error setting issue label %s for %s: %s", label, u, err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		err = fmt.Errorf("error setting issue label %s for %s", label, u)
-	}
-	return
-}
-
 type Handler struct {
-	sec typedcorev1.SecretInterface
-	cl  *http.Client
+	git *Git
 }
 
 func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
@@ -307,7 +94,7 @@ func (h *Handler) pushHandler(w http.ResponseWriter, r *http.Request) {
 		logError(w, err.Error())
 		return
 	}
-	push := r.Header.Get(pushAction)
+	push := r.Header.Get(pushRef)
 	//if contains(r.Header[pushAction], pb.Ref) {
 	if push != "" && push == pb.Ref {
 		h := w.Header()
@@ -326,8 +113,12 @@ func (h *Handler) commentHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if !contains(r.Header[commentAction], cb.Action) {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
 	//if contains(r.Header[commentAction], cb.Comment.Body) {
-	comment := r.Header.Get(commentAction)
+	comment := r.Header.Get(commentHeader)
 	if comment == "" {
 		w.WriteHeader(http.StatusBadRequest)
 		return
@@ -351,7 +142,7 @@ func (h *Handler) commentHandler(w http.ResponseWriter, r *http.Request) {
 				labels = append(labels, l.Name)
 			}
 			if !contains(labels, label) {
-				err := h.setLabel(cb.Repository, api, issue, label, color, r.Header[removeLabelsHeader])
+				err := h.git.setLabel(cb.Repository, api, issue, label, color, r.Header[removeLabelsHeader])
 				if err != nil {
 					logError(w, err.Error())
 					return
@@ -359,7 +150,7 @@ func (h *Handler) commentHandler(w http.ResponseWriter, r *http.Request) {
 			}
 		}
 
-		pr, err := h.getPullRequest(cb.Repository, api, issue)
+		pr, err := h.git.getPullRequest(cb.Repository, api, issue)
 		if err != nil {
 			logError(w, err.Error())
 			return
@@ -402,12 +193,14 @@ func main() {
 		log.Fatalf("error getting current namespace %s\n", err)
 	}
 	h := &Handler{
+		&Git{
 			sec: cl.CoreV1().Secrets(ns),
 			cl: &http.Client{Transport: &http.Transport{
 				DialContext: (&net.Dialer{
 					Timeout: 30 * time.Second,
 				}).DialContext,
 			}},
+		},
 	}
 
 	http.Handle("/", h)

types.go

@@ -23,7 +23,11 @@ type Label struct {
 	Name  string `json:"name"`
 }
 
-type PostLabels struct {
+type PostLabelsString struct {
+	Labels []string `json:"labels"`
+}
+
+type PostLabelsInt struct {
 	Labels []int64 `json:"labels"`
 }
 
@@ -33,6 +37,7 @@ type PushBody struct {
 }
 
 type CommentBody struct {
+	Action     string     `json:"action"`
 	Issue      Issue      `json:"issue"`
 	Comment    Comment    `json:"comment"`
 	Repository Repository `json:"repository"`