add an empty placeholder for mq.topic.list

weed/shell/command_mq_topic_list.go

@@ -0,0 +1,28 @@
+package shell
+
+import (
+	"fmt"
+	"io"
+)
+
+func init() {
+	Commands = append(Commands, &commandMqTopicList{})
+}
+
+type commandMqTopicList struct {
+}
+
+func (c *commandMqTopicList) Name() string {
+	return "mq.topic.list"
+}
+
+func (c *commandMqTopicList) Help() string {
+	return `print out all topics`
+}
+
+func (c *commandMqTopicList) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	fmt.Fprintf(writer, "%s\n", commandEnv.option.Directory)
+
+	return nil
+}