Use gitlab generic webhooks instead of drone-ci-service (#620)

Benefits:
- the webhook delivery history of the drone-ci-service is broken (no way to check if a webhook was successfully delivered by Gitlab)
- drone-ci-service has limited events support (for example no comment or branch deleted event)
- independent from drone integration in general

server/remote/gitlab/gitlab.go

@@ -388,6 +388,16 @@ func (g *Gitlab) Netrc(u *model.User, r *model.Repo) (*model.Netrc, error) {
 	}, nil
 }
 
+func (g *Gitlab) getTokenAndWebURL(link string) (token string, webURL string, err error) {
+	uri, err := url.Parse(link)
+	if err != nil {
+		return "", "", err
+	}
+	token = uri.Query().Get("access_token")
+	webURL = fmt.Sprintf("%s://%s/api/hook", uri.Scheme, uri.Host)
+	return token, webURL, nil
+}
+
 // Activate activates a repository by adding a Post-commit hook and
 // a Public Deploy key, if applicable.
 func (g *Gitlab) Activate(ctx context.Context, user *model.User, repo *model.Repo, link string) error {
@@ -395,23 +405,31 @@ func (g *Gitlab) Activate(ctx context.Context, user *model.User, repo *model.Rep
 	if err != nil {
 		return err
 	}
-	uri, err := url.Parse(link)
-	if err != nil {
-		return err
-	}
-	token := uri.Query().Get("access_token")
-	webURL := fmt.Sprintf("%s://%s", uri.Scheme, uri.Host)
 
 	_repo, err := g.getProject(ctx, client, repo.Owner, repo.Name)
 	if err != nil {
 		return err
 	}
-	// TODO: "WoodpeckerCIService"
-	_, err = client.Services.SetDroneCIService(_repo.ID, &gitlab.SetDroneCIServiceOptions{
-		Token:                 &token,
-		DroneURL:              &webURL,
+
+	token, webURL, err := g.getTokenAndWebURL(link)
+	if err != nil {
+		return err
+	}
+
+	if len(token) == 0 {
+		return fmt.Errorf("no token found")
+	}
+
+	_, _, err = client.Projects.AddProjectHook(_repo.ID, &gitlab.AddProjectHookOptions{
+		URL:                   gitlab.String(webURL),
+		Token:                 gitlab.String(token),
+		PushEvents:            gitlab.Bool(true),
+		TagPushEvents:         gitlab.Bool(true),
+		MergeRequestsEvents:   gitlab.Bool(true),
+		DeploymentEvents:      gitlab.Bool(true),
 		EnableSSLVerification: gitlab.Bool(!g.SkipVerify),
 	}, gitlab.WithContext(ctx))
+
 	return err
 }
 
@@ -427,8 +445,44 @@ func (g *Gitlab) Deactivate(ctx context.Context, user *model.User, repo *model.R
 	if err != nil {
 		return err
 	}
-	// TODO: "WoodpeckerCIService"
-	_, err = client.Services.DeleteDroneCIService(_repo.ID, gitlab.WithContext(ctx))
+
+	_, webURL, err := g.getTokenAndWebURL(link)
+	if err != nil {
+		return err
+	}
+
+	hookID := -1
+	listProjectHooksOptions := &gitlab.ListProjectHooksOptions{
+		PerPage: 10,
+		Page:    1,
+	}
+	for {
+		hooks, resp, err := client.Projects.ListProjectHooks(_repo.ID, listProjectHooksOptions, gitlab.WithContext(ctx))
+		if err != nil {
+			return err
+		}
+
+		for _, hook := range hooks {
+			if hook.URL == webURL {
+				hookID = hook.ID
+				break
+			}
+		}
+
+		// Exit the loop when we've seen all pages
+		if resp.CurrentPage >= resp.TotalPages {
+			break
+		}
+
+		// Update the page number to get the next page
+		listProjectHooksOptions.Page = resp.NextPage
+	}
+
+	if hookID == -1 {
+		return fmt.Errorf("could not find hook to delete")
+	}
+
+	_, err = client.Projects.DeleteProjectHook(_repo.ID, hookID, gitlab.WithContext(ctx))
 
 	return err
 }

server/remote/gitlab/testdata/projects.go

@@ -224,3 +224,53 @@ var project6Paylod = []byte(`
 	}
 }
 `)
+
+var project4PayloadHook = []byte(`
+{
+	"id": 10717088,
+	"url": "http://example.com/api/hook",
+	"created_at": "2021-12-18T23:29:33.852Z",
+	"push_events": true,
+	"tag_push_events": true,
+	"merge_requests_events": true,
+	"repository_update_events": false,
+	"enable_ssl_verification": true,
+	"project_id": 4,
+	"issues_events": false,
+	"confidential_issues_events": false,
+	"note_events": false,
+	"confidential_note_events": null,
+	"pipeline_events": false,
+	"wiki_page_events": false,
+	"deployment_events": true,
+	"job_events": false,
+	"releases_events": false,
+	"push_events_branch_filter": null
+}
+`)
+
+var project4PayloadHooks = []byte(`
+[
+  {
+    "id": 10717088,
+    "url": "http://example.com/api/hook",
+    "created_at": "2021-12-18T23:29:33.852Z",
+    "push_events": true,
+    "tag_push_events": true,
+    "merge_requests_events": true,
+    "repository_update_events": false,
+    "enable_ssl_verification": true,
+    "project_id": 4,
+    "issues_events": false,
+    "confidential_issues_events": false,
+    "note_events": false,
+    "confidential_note_events": null,
+    "pipeline_events": false,
+    "wiki_page_events": false,
+    "deployment_events": true,
+    "job_events": false,
+    "releases_events": false,
+    "push_events_branch_filter": null
+  }
+]
+`)

server/remote/gitlab/testdata/testdata.go

@@ -15,13 +15,9 @@
 package testdata
 
 import (
-	"encoding/json"
-	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
-
-	"github.com/stretchr/testify/assert"
 )
 
 // NewServer setup a mock server for testing purposes.
@@ -52,23 +48,17 @@ func NewServer(t *testing.T) *httptest.Server {
 		case "/api/v4/projects/brightbox/puppet":
 			w.Write(project6Paylod)
 			return
-		case "/api/v4/projects/4/services/drone-ci":
+		case "/api/v4/projects/4/hooks":
 			switch r.Method {
-			case "PUT":
-				body, _ := io.ReadAll(r.Body)
-				opts := make(map[string]interface{})
-				assert.NoError(t, json.Unmarshal(body, &opts))
-				token, ok := opts["token"].(string)
-				assert.True(t, ok)
-				if token == "" {
-					w.WriteHeader(404)
-				} else {
-					w.WriteHeader(201)
-				}
-			case "DELETE":
+			case "GET":
+				w.Write(project4PayloadHooks)
+			case "POST":
+				w.Write(project4PayloadHook)
 				w.WriteHeader(201)
 			}
-
+			return
+		case "/api/v4/projects/4/hooks/10717088":
+			w.WriteHeader(201)
 			return
 		case "/oauth/token":
 			w.Write(accessTokenPayload)

server/shared/configFetcher.go

@@ -43,7 +43,9 @@ func (cf *configFetcher) Fetch(ctx context.Context) (files []*remote.FileMeta, e
 	// try to fetch 3 times, timeout is one second longer each time
 	for i := 0; i < 3; i++ {
 		files, err = cf.fetch(ctx, time.Second*time.Duration(configFetchTimeout), strings.TrimSpace(cf.repo.Config))
-		log.Trace().Msgf("%d try failed: %v", i, err)
+		if err != nil {
+			log.Trace().Err(err).Msgf("%d. try failed", i+1)
+		}
 		if errors.Is(err, context.DeadlineExceeded) {
 			continue
 		}

shared/token/token.go

@@ -52,10 +52,9 @@ func parse(raw string, fn SecretFunc) (*Token, error) {
 }
 
 func ParseRequest(r *http.Request, fn SecretFunc) (*Token, error) {
-	token := r.Header.Get("Authorization")
-
 	// first we attempt to get the token from the
 	// authorization header.
+	token := r.Header.Get("Authorization")
 	if len(token) != 0 {
 		log.Trace().Msgf("token.ParseRequest: found token in header: %s", token)
 		bearer := token
@@ -65,6 +64,11 @@ func ParseRequest(r *http.Request, fn SecretFunc) (*Token, error) {
 		return parse(bearer, fn)
 	}
 
+	token = r.Header.Get("X-Gitlab-Token")
+	if len(token) != 0 {
+		return parse(token, fn)
+	}
+
 	// then we attempt to get the token from the
 	// access_token url query parameter
 	token = r.FormValue("access_token")