changed how we store upcoming executions from slice to map

daemons/execution_manager.go

@@ -22,11 +22,11 @@ func (em *ExecutionManager) RetrieveNextExecutions() {
 		Executions.Mu.Lock()
 		if len(Executions.Execs) > 0 {
 			executions := Executions.Execs
-			for i := len(executions) - 1; i >= 0; i-- {
-				if executions[i].ExecDate.Before(time.Now().UTC()) {
-					logger.Info().Msg("Will execute " + executions[i].UUID + " soon")
-					go em.executeExecution(executions[i])
-					Executions.Execs = append(executions[:i], executions[i+1:]...)
+			for execId, exec := range executions {
+				if exec.ExecDate.Before(time.Now().UTC()) {
+					logger.Info().Msg("Will execute " + execId + " soon")
+					go em.executeExecution(&exec)
+					delete(executions,execId)
 				}
 			}
 		}