more abstraction and simple dashboard for processes

supervisor/supervisor.go

@@ -0,0 +1,58 @@
+package supervisor
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"sort"
+)
+
+type Supervisor struct {
+	Processes []*Process `json:"processes"`
+}
+
+func ReadTemplate(path string) (supervisor Supervisor, err error) {
+	content, err := os.ReadFile(path)
+	if err != nil {
+		return
+	}
+
+	err = json.Unmarshal(content, &supervisor)
+	return
+}
+
+func (s *Supervisor) StartProcesses() error {
+	sort.Slice(s.Processes, func(i, j int) bool {
+		return s.Processes[i].Priority < s.Processes[j].Priority
+	})
+
+	for _, p := range s.Processes {
+		p.Start()
+	}
+	return nil
+}
+
+func (s *Supervisor) GetProcesses() (processes []Process) {
+	for _, p := range s.Processes {
+		processes = append(processes, *p)
+	}
+	return
+}
+
+func (s *Supervisor) StartProcessByName(name string) error {
+	for _, p := range s.Processes {
+		if p.Name == name {
+			return p.Start()
+		}
+	}
+	return fmt.Errorf("process %s not found", name)
+}
+
+func (s *Supervisor) StopProcessByName(name string) error {
+	for _, p := range s.Processes {
+		if p.Name == name {
+			return p.Stop()
+		}
+	}
+	return fmt.Errorf("process %s not found", name)
+}