add groups feature

lib/units/groups-engine/watchers/users.js

@@ -0,0 +1,94 @@
+/**
+* Copyright © 2019 code initially contributed by Orange SA, authors: Denis Barbaron - Licensed under the Apache license 2.0
+**/
+
+const timeutil = require('../../../util/timeutil')
+const r = require('rethinkdb')
+const _ = require('lodash')
+const logger = require('../../../util/logger')
+const wireutil = require('../../../wire/util')
+const wire = require('../../../wire')
+const db = require('../../../db')
+
+module.exports = function(pushdev) {
+  const log = logger.createLogger('watcher-users')
+
+  function sendUserChange(user, isAddedGroup, groups, action, targets) {
+    pushdev.send([
+      wireutil.global
+    , wireutil.envelope(
+        new wire.UserChangeMessage(
+          user
+        , isAddedGroup
+        , groups
+        , action
+        , targets
+        , timeutil.now('nano')))
+    ])
+  }
+
+  db.run(r
+    .table('users')
+    .pluck(
+      'email'
+    , 'name'
+    , 'privilege'
+    , {groups: ['quotas', 'subscribed']
+    })
+    .changes(), function(err, cursor) {
+    if (err) {
+      throw err
+    }
+    return cursor
+  })
+  .then(function(cursor) {
+    cursor.each(function(err, data) {
+      if (err) {
+        throw err
+      }
+      if (data.old_val === null) {
+        sendUserChange(data.new_val, false, [], 'created', ['settings'])
+      }
+      else if (data.new_val === null) {
+        sendUserChange(data.old_val, false, [], 'deleted', ['settings'])
+      }
+      else {
+        const targets = []
+
+        if (!_.isEqual(
+               data.new_val.groups.quotas.allocated
+             , data.old_val.groups.quotas.allocated)) {
+          targets.push('settings')
+          targets.push('view')
+        }
+        else if (!_.isEqual(
+                    data.new_val.groups.quotas.consumed
+                  , data.old_val.groups.quotas.consumed)) {
+          targets.push('view')
+        }
+        else if (data.new_val.groups.quotas.defaultGroupsNumber !==
+          data.old_val.groups.quotas.defaultGroupsNumber ||
+          data.new_val.groups.quotas.defaultGroupsDuration !==
+          data.old_val.groups.quotas.defaultGroupsDuration ||
+          data.new_val.groups.quotas.defaultGroupsRepetitions !==
+          data.old_val.groups.quotas.defaultGroupsRepetitions ||
+          data.new_val.groups.quotas.repetitions !==
+          data.old_val.groups.quotas.repetitions ||
+          !_.isEqual(data.new_val.groups.subscribed, data.old_val.groups.subscribed)) {
+          targets.push('settings')
+        }
+        if (targets.length) {
+          sendUserChange(
+            data.new_val
+          , data.new_val.groups.subscribed.length > data.old_val.groups.subscribed.length
+          , _.xor(data.new_val.groups.subscribed, data.old_val.groups.subscribed)
+          , 'updated'
+          , targets)
+        }
+      }
+    })
+  })
+  .catch(function(err) {
+    log.error('An error occured during USERS table watching', err.stack)
+  })
+}