Twitter媒体上传

Question

我正在尝试将媒体上传到Twitter。我运行这段代码，显然append，init和finalize函数正在运行。但是，当我运行状态功能时，那里会永远收到状态待定错误，并且无法升级媒体。我不知道媒体附加或finalizze函数中存在错误，导致状态更新检查永远挂起。

var request = require('request');
var fs = require('fs');
var twit = require("twit")
var config = require("./config.js")
var t = new twit(config)

var MEDIA_ENDPOINT_URL = 'https://upload.twitter.com/1.1/media/upload.json'
var POST_TWEET_URL = 'https://api.twitter.com/1.1/statuses/update.json'


/**
 * Video Tweet constructor
 **/
var VideoTweet = function (data) {

  var self = this;
  self.file_path = data.file_path;
  self.tweet_text = data.tweet_text;
  self.total_bytes = undefined;
  self.media_id = undefined;
  self.processing_info = undefined;

  // retreives file info and inits upload on complete
  fs.stat(self.file_path, function (error, stats) {
    self.total_bytes = stats.size
    self.upload_init();
  });
};


/**
 * Inits media upload
 */
VideoTweet.prototype.upload_init = function () {

  console.log('INIT');

  var self = this;

  t.post('media/upload', 
      {
    'command': 'INIT',
    'media_type': 'video/mp4',
    'total_bytes': self.total_bytes,
    'media_category': 'tweetvideo'
  },

  // inits media upload
function (error, response, body) {

    // store media ID for later reference
    self.media_id = response.media_id_string;

    // start appening media segments
    self.upload_append();
  })

}


/**
 * Uploads/appends video file segments
 */
VideoTweet.prototype.upload_append = function () {

  var buffer_length = 5000000;
  var buffer = Buffer.alloc(buffer_length);
  var bytes_sent = 0;

  var self = this;

  // open and read video file
  fs.open(self.file_path, 'r', function(error, file_data) {

    var bytes_read, data,
    segment_index = 0,
    segments_completed = 0;

    // upload video file in chunks
    while (bytes_sent < self.total_bytes) {

      console.log('APPEND');

      bytes_read = fs.readSync(file_data, buffer, 0, buffer_length, null);
      data = bytes_read < buffer_length ? buffer.slice(0, bytes_read) : buffer;
      

      t.post('media/upload', 
      {
          command: 'APPEND',
          media_id: self.media_id,
          segment_index: segment_index,
          media_data: data.toString('base64')
      },

        function () {
        segments_completed = segments_completed + 1;

        console.log('segment_completed');
        if (segments_completed == segment_index) {
          console.log('Upload chunks complete');
          self.upload_finalize();
        }
      });
      
      bytes_sent = bytes_sent + buffer_length;
      segment_index = segment_index + 1;
    }
  });

}


/**
 * Finalizes media segments uploaded 
 */
VideoTweet.prototype.upload_finalize = function () {

  console.log('FINALIZE');

  var self = this;

  t.post('media/upload', 
      {
    'command': 'FINALIZE',
    'media_id': self.media_id
  },
  
  function(error, response, body) {
    self.check_status(response.processing_info);
    
  });
}

/**
 * Checks status of uploaded media
 */
VideoTweet.prototype.check_status = function (processing_info) {
  var self = this;

  // if response does not contain any processing_info, then video is ready
  if (!processing_info) {
    self.tweet();
    return;
  }

  console.log('STATUS');
  t.get('media/upload', 
  {
    'command': 'STATUS',
    'media_id': self.media_id
  },

  // check processing status 
 function(error, response, body) {
    console.log('Media processing status is ' + processing_info.state);

    if (processing_info.state == 'succeeded') {
      self.tweet();
      return
    }
  
    else if (processing_info.state == 'failed') {
      return;
    }

    // check status again after specified duration
    var timeout_length = processing_info.check_after_secs ? processing_info.check_after_secs * 1000 : 0;

    console.log('Checking after ' + timeout_length + ' milliseconds');

    setTimeout(function () {
      self.check_status(processing_info)
    }, timeout_length);
  });
}


/**
 * Tweets text with attached media
 */
VideoTweet.prototype.tweet = function () {

  var self = this;

  t.post('statuses/update', 
      {
    'status': self.tweet_text,
    'media_ids': self.media_id
  })

  // publish Tweet



}


/**
 * Instantiates a VideoTweet
 */
videoTweet = new VideoTweet({
  file_path: '/home/rafael/Documentos/botdaduda/6879447192097213697.mp4',
  tweet_text: 'I just uploaded a video with the @TwitterAPI and #nodejs.'
});