Add support for Slack notifications

Signed-off-by: Manuel Stahl <manuel.stahl@awesome-technologies.de>

main.go

@@ -49,6 +49,8 @@ type config struct {
 	GithubToken string `yaml:"github_token"`
 
 	GithubProjectMappings map[string]string `yaml:"github_project_mappings"`
+
+	SlackWebhookURL string `yaml:"slack_webhook_url"`
 }
 
 func basicAuth(handler http.Handler, username, password, realm string) http.Handler {
@@ -89,6 +91,14 @@ func main() {
 		ghClient = github.NewClient(tc)
 	}
 
+	var slack *slackClient
+
+	if cfg.SlackWebhookURL == "" {
+		fmt.Println("No slack_webhook_url configured. Reporting bugs to slack is disabled.")
+	} else {
+		slack = NewSlackClient(cfg.SlackWebhookURL)
+	}
+
 	apiPrefix := cfg.APIPrefix
 	if apiPrefix == "" {
 		_, port, err := net.SplitHostPort(*bindAddr)
@@ -102,7 +112,7 @@ func main() {
 	}
 	log.Printf("Using %s/listing as public URI", apiPrefix)
 
-	http.Handle("/api/submit", &submitServer{ghClient, apiPrefix, cfg.GithubProjectMappings})
+	http.Handle("/api/submit", &submitServer{ghClient, apiPrefix, cfg.GithubProjectMappings, slack})
 
 	// Make sure bugs directory exists
 	_ = os.Mkdir("bugs", os.ModePerm)

rageshake.sample.yaml

@@ -16,3 +16,7 @@ github_token: secrettoken
 # mappings from app name (as submitted in the API) to github repo for issue reporting.
 github_project_mappings:
    my-app: octocat/HelloWorld
+
+# a Slack personal webhook URL (https://api.slack.com/incoming-webhooks), which
+# will be used to post a notification on Slack for each report.
+slack_webhook_url: https://hooks.slack.com/services/TTTTTTT/XXXXXXXXXX/YYYYYYYYYYY

slack.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"strings"
+	"fmt"
+	"net/http"
+)
+
+type slackClient struct {
+	webHook string
+	name    string
+	face    string
+}
+
+func NewSlackClient(webHook string) *slackClient {
+	return &slackClient{
+		webHook: webHook,
+		name:    "Notifier",
+		face:    "robot_face"}
+}
+
+func (slack *slackClient) Name(name string) {
+	slack.name = name
+}
+
+func (slack *slackClient) Face(face string) {
+	slack.face = face
+}
+
+func (slack slackClient) Notify(text string) error {
+	json := buildRequest(text, slack)
+
+	req, err := http.NewRequest("POST", slack.webHook, strings.NewReader(json))
+	if err != nil {
+		return fmt.Errorf("Can't connect to host %s: %s", slack.webHook, err.Error())
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	client := http.Client{}
+	_, err = client.Do(req)
+
+	return err
+}
+
+func buildRequest(text string, slack slackClient) string {
+	return fmt.Sprintf(`{"text":"%s", "username": "%s", "icon_emoji": ":%s:"}`, text, slack.name, slack.face)
+}

submit.go

@@ -51,6 +51,8 @@ type submitServer struct {
 
 	// mappings from application to github owner/project
 	githubProjectMappings map[string]string
+
+	slack *slackClient
 }
 
 // the type of payload which can be uploaded as JSON to the submit endpoint
@@ -460,17 +462,26 @@ func (s *submitServer) saveReport(ctx context.Context, p parsedPayload, reportDi
 		return nil, err
 	}
 
-	if s.ghClient == nil {
-		// we're done here
-		log.Println("GH issue submission disabled")
-		return &resp, nil
+	if err := s.submitGithubIssue(ctx, p, listingURL, &resp); err != nil {
+		return nil, err
 	}
 
+	if err := s.submitSlackNotification(p, listingURL); err != nil {
+		return nil, err
+	}
+
+	return &resp, nil
+}
+
+func (s *submitServer) submitGithubIssue(ctx context.Context, p parsedPayload, listingURL string, resp *submitResponse) error {
+	if s.ghClient == nil {
+		log.Println("GH issue submission disabled")
+	} else {
 		// submit a github issue
 		ghProj := s.githubProjectMappings[p.AppName]
 		if ghProj == "" {
 			log.Println("Not creating GH issue for unknown app", p.AppName)
-		return &resp, nil
+			return nil
 		}
 		splits := strings.SplitN(ghProj, "/", 2)
 		if len(splits) < 2 {
@@ -482,14 +493,31 @@ func (s *submitServer) saveReport(ctx context.Context, p parsedPayload, reportDi
 
 		issue, _, err := s.ghClient.Issues.Create(ctx, owner, repo, &issueReq)
 		if err != nil {
-		return nil, err
+			return err
 		}
 
 		log.Println("Created issue:", *issue.HTMLURL)
 
 		resp.ReportURL = *issue.HTMLURL
+	}
+	return nil
+}
 
-	return &resp, nil
+func (s *submitServer) submitSlackNotification(p parsedPayload, listingURL string) error {
+	if s.slack == nil {
+		log.Println("Slack notifications disabled")
+	} else {
+		slackBuf := fmt.Sprintf(
+			"%s\nApplication: %s\nReport: %s",
+			p.UserText, p.AppName, listingURL,
+		)
+
+		err := s.slack.Notify(slackBuf)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 func buildGithubIssueRequest(p parsedPayload, listingURL string) github.IssueRequest {