refactor(wip): introduce job processing system

refactor: adapt report generation scheduling

config/jobqueue.go

@@ -0,0 +1,44 @@
+package config
+
+import (
+	"fmt"
+	"github.com/muety/artifex"
+)
+
+var jobqueues map[string]*artifex.Dispatcher
+
+const (
+	QueueDefault    = ""
+	QueueProcessing = "processing"
+	QueueMails      = "mails"
+)
+
+func init() {
+	jobqueues = make(map[string]*artifex.Dispatcher)
+}
+
+func InitQueue(name string, workers int) error {
+	if _, ok := jobqueues[name]; ok {
+		return fmt.Errorf("queue '%s' already existing", name)
+	}
+	jobqueues[name] = artifex.NewDispatcher(workers, 4096)
+	jobqueues[name].Start()
+	return nil
+}
+
+func GetDefaultQueue() *artifex.Dispatcher {
+	return GetQueue("")
+}
+
+func GetQueue(name string) *artifex.Dispatcher {
+	if _, ok := jobqueues[name]; !ok {
+		InitQueue(name, 1)
+	}
+	return jobqueues[name]
+}
+
+func CloseQueues() {
+	for _, q := range jobqueues {
+		q.Stop()
+	}
+}