使用 ldapjs 和 promise [英] Use ldapjs with promise

问题描述

我想将以下代码转换为使用 promise.它正在工作并在活动目录中输出用户的属性.

I want to convert the following code to use promise. It is working and output a user's attributes within the active directory.

var client = ldap.createClient({
  url: ldap_url
});

client.bind(ldap_username, ldap_password, function (err) {
    client.search(ldap_dn_search, opts, function (err, search) {
        search.on('searchEntry', function (entry) {
          var user = entry.object;
          // It is working!!!. It outputs all user attributes.
          console.log(user);
        });

    });
}); 

以下是我的尝试，但没有输出任何内容.

The following is my attempt, butit doesn't output anything.

var Promise = require('promise');
var client_bind = Promise.denodeify(client.bind);
var client_search = Promise.denodeify(client.search);

client_bind(ldap_username, ldap_password)
.then(function(err){
  client_search(ldap_dn_search, opts)
    .then(function(search){
      var search_on = Promise.denodeify(search.on);
      search_on('searchEntry')
        .then(function(entry){
          var user = entry.object;

          // It doesn't output anything !!!
          console.log(user);
        });
      });

    });

推荐答案

我遇到了同样的问题.搜索发出事件，所以我们需要一些东西来处理它们并沿着链进一步传递.这是一段代码，对我有用:

I had the same problem. Search emits events, so we need something that processes them and passes further along the chain. Here is piece of code, that works for me:

var ldap = require('ldapjs');
var promise = require('bluebird');

var client = ldap.createClient({url: app.settings['ldap']['server']});
var uid;

promise.promisifyAll(client);

function searchPromise(res, notfoundtext) {
  return new Promise(function(resolve, reject) {
    var found = false;
    res.on('searchEntry', function(entry) {
      found = true;
      resolve(entry);
    });
    res.on('error', function(e) {
      reject(e.message);
    });
    res.on('end', function() {
      if (!found) {
        reject(notfoundtext);
      }
    });
  });
}

client.searchAsync(app.settings['ldap']['baseDn'], {filter: '(mail='+credentials.email+')', scope: 'sub'})
  .then(function(res) {
    return searchPromise(res, 'User isn\'t exists.');
  })
  .then(function (entry) {
    uid = entry.object.uid;
    return client.bindAsync(entry.object.dn, credentials.password);
  })
  .then(function() {
    return client.searchAsync('cn='+app.settings['ldap']['group']+',cn=groups,'+app.settings['ldap']['baseDn'], {scope: 'sub', filter: '(memberUid='+uid+')'});
  })
  .then(function(res) {
    return searchPromise(res, 'User is not in group ' + app.settings['ldap']['group']);
  })
  .then(function() {
    console.log('All is ok');
  })
  .catch(function(message) {
    console.log('Error:' + message);
  });

在搜索之后，我立即添加了一个步骤来捕获事件、处理它们并沿着链进一步传递它.这使得函数 searchPromise.

Immediately after the search I add one more step that catches the events, processes them, and passes it further along the chain. This makes the function searchPromise.

祝你编码好运)

这篇关于使用 ldapjs 和 promise的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！