add utils are getGroupID and getTopic

authhook/utils/getGroupID.js

+var getRole = require('../checkClientRole').getRole
+
+function getGroupID(token, id, cb) {
+    checkID(token, id, (groupId) => {
+        // console.log(groupId)
+        cb(groupId)
+    })
+}
+module.exports.getGroupID = getGroupID
+
+function checkID(token, id, cb) {
+    // console.log(token)
+    getRole(token, (role) => {
+        // console.log(role)
+        if (role.hasOwnProperty('groupId')) {
+            cb(role.info.groupId)
+        }
+        else {
+            doDB(id, (groupId) => {
+                // console.log(groupId)
+                cb(groupId)
+            })
+        }
+    })
+}
+
+function doDB(id, cb) {
+    var groupId = 'test'
+    cb(groupId)
+}
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authhook/utils/getTopic.js

+function getTopic(topic, id) {
+    var _topic = classifiedTopic(topic) + '/!' + id + topic.split(classifiedTopic(topic))[1]
+    return _topic
+}
+module.exports.getTopic = getTopic
+
+function classifiedTopic(topic) {
+    if (topic.indexOf('@msg') !== -1) {
+        return '@msg'
+    } else if (topic.indexOf('@shadow/updated') !== -1) {
+        return '@shadow/updated'
+    } else if (topic.indexOf('@shadow/update') !== -1) {
+        return '@shadow/update'
+    } else if (topic.indexOf('@shadow/get') !== -1) {
+        return '@shadow/get'
+    } else if (topic.indexOf('@client') !== -1) {
+        return '@client'
+    }
+}
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