Initial commit for gocast

controller/app.go

@@ -0,0 +1,64 @@
+package controller
+
+import (
+	"fmt"
+	"github.com/golang/glog"
+	"net"
+	"strings"
+)
+
+type MonitorType int
+
+const (
+	Monitor_PORT MonitorType = 1
+	Monitor_EXEC MonitorType = 2
+)
+
+var Monitors = map[string]MonitorType{"port": Monitor_PORT, "exec": Monitor_EXEC}
+
+func (m MonitorType) String() string {
+	for str, mtr := range Monitors {
+		if m == mtr {
+			return str
+		}
+	}
+	return "unknown"
+}
+
+type Monitor struct {
+	Type     MonitorType
+	Port     string
+	Protocol string
+	Cmd      string
+}
+
+type App struct {
+	Name    string
+	Vip     *net.IPNet
+	Monitor Monitor
+}
+
+func NewApp(appName, vip, monitor, monitorType string) (*App, error) {
+	if appName == "" {
+		return nil, fmt.Errorf("Invalid app name")
+	}
+	app := &App{Name: appName}
+	_, ipnet, err := net.ParseCIDR(vip)
+	if err != nil {
+		return nil, fmt.Errorf("Invalid VIP specified, need ip/mask")
+	}
+	app.Vip = ipnet
+	m := Monitor{Type: Monitors[monitorType]}
+	switch monitorType {
+	case "port":
+		parts := strings.Split(monitor, ":")
+		m.Protocol = parts[0]
+		m.Port = parts[1]
+	case "exec":
+		m.Cmd = monitor
+	default:
+		glog.V(2).Infof("No monitor specified")
+	}
+	app.Monitor = m
+	return app, nil
+}