// 执行单个 Command
func (self *CommandProcessor) executeCommand(command Command, commandId uuid.UUID) {
commandName := util.FromPtrTypeOf(command).Name()
var handler CommandHandler
var handlerName string
for key, val := range self.handlers {
if key == commandName {
handler = val
handlerName = util.FromPtrTypeOf(val).String()
break
}
}
if handler != nil {
context := &commandHandlerContext{commandName: commandName, handlerName: handlerName, isStop: false, isSuccess: false}
middlewares := self.createMiddlewares()
self.handleBefore(middlewares, command, ExecuteBeforeContext(context))
if !context.isStop {
startTime := time.Now().UnixNano()
handler.Execute(command)
endTime := time.Now().UnixNano()
if ddd.DEBUG {
consoleLog.Printf("Command '%s_%s' execute in %vms.\n", commandName, commandId, float64(endTime-startTime)/float64(time.Millisecond))
}
context.isSuccess = true
self.handleAfter(middlewares, command, ExecuteAfterContext(context))
} else {
consoleLog.Printf("Command '%s_%s' is stopped by %s.\n", commandName, commandId, util.FromPtrTypeOf(context.stopByMiddleware).String())
}
} else {
consoleLog.Panicf("[panic] CommandHandler for Command %s not found!", commandName)
}
}
// 注册 CommandHandler
func (self *CommandProcessor) RegisterHandler(handler CommandHandler) {
handlerName := util.FromPtrTypeOf(handler).String()
for _, commandType := range handler.CommandTypes() {
commandName := util.FromPtrType(commandType).Name()
self.handlers[commandName] = handler
consoleLog.Printf("Register handler:%s for %s.\n", handlerName, commandName)
}
}
// 获取 Command 的 CommandType
func CommandTypeOf(c Command) CommandType {
return CommandType(util.FromPtrTypeOf(c))
}
// 注册 CommandMiddleware
func (self *CommandProcessor) RegisterMiddleware(middleware CommandMiddleware) {
middlewareType := util.FromPtrTypeOf(middleware)
middlewareName := middlewareType.String()
self.middlewareTypes = append(self.middlewareTypes, middlewareType)
consoleLog.Printf("Register middleware:%s.\n", middlewareName)
}