Notification - Step 1 (#523)

* Notification - Step 1

* Add copyright headers

* Cache issue and repository on notification model

modules/notification/notification.go

@@ -0,0 +1,50 @@
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package notification
+
+import (
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+)
+
+type (
+	notificationService struct {
+		issueQueue chan issueNotificationOpts
+	}
+
+	issueNotificationOpts struct {
+		issue                *models.Issue
+		notificationAuthorID int64
+	}
+)
+
+var (
+	// Service is the notification service
+	Service = &notificationService{
+		issueQueue: make(chan issueNotificationOpts, 100),
+	}
+)
+
+func init() {
+	go Service.Run()
+}
+
+func (ns *notificationService) Run() {
+	for {
+		select {
+		case opts := <-ns.issueQueue:
+			if err := models.CreateOrUpdateIssueNotifications(opts.issue, opts.notificationAuthorID); err != nil {
+				log.Error(4, "Was unable to create issue notification: %v", err)
+			}
+		}
+	}
+}
+
+func (ns *notificationService) NotifyIssue(issue *models.Issue, notificationAuthorID int64) {
+	ns.issueQueue <- issueNotificationOpts{
+		issue,
+		notificationAuthorID,
+	}
+}