reorganized the source to place the resuable code under the hodu package and keep the command entry point in the main package under the cmd directory

hodu.go

@@ -0,0 +1,27 @@
+package hodu
+
+import "sync"
+
+const HODU_VERSION uint32 = 0x010000
+
+type LogLevel int
+
+const (
+	LOG_DEBUG LogLevel = iota + 1
+	LOG_ERROR
+	LOG_WARN
+	LOG_INFO
+)
+
+type Logger interface {
+	Write (level LogLevel, fmt string, args ...interface{})
+}
+
+type Service interface {
+	RunTask (wg *sync.WaitGroup) // blocking. run the actual task loop
+	StartService(data interface{}) // non-blocking. spin up a service. it may be invokded multiple times for multiple instances
+	StopServices() // non-blocking. send stop request to all services spun up
+	WaitForTermination() // blocking. must wait until all services are stopped
+}
+
+type ExtTask func(svc Service, wg *sync.WaitGroup)