Node.js 谷歌日历事件更改时更新数据库

Node.js 谷歌日历事件更改时更新数据库,node.js,calendar,google-calendar-api,Node.js,Calendar,Google Calendar Api,我一直在实现谷歌日历api的一些功能。我有一个自定义日历,可以与谷歌日历同步。这意味着,您可以从我的仪表板到谷歌日历帐户创建和编辑日历和事件。我面临的主要问题是,如果我直接从谷歌日历中更新活动。我已经实现了推送通知并获得如下响应: { "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540", "Google_channel_token": "calendar_id = 4e7 d5c

我一直在实现谷歌日历api的一些功能。我有一个自定义日历,可以与谷歌日历同步。这意味着,您可以从我的仪表板到谷歌日历帐户创建和编辑日历和事件。我面临的主要问题是,如果我直接从谷歌日历中更新活动。我已经实现了推送通知并获得如下响应:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
但这种反应非常普遍。例如,如果此日历上有1000个事件,则更新完整的1000个事件。我将始终收到相同的通知1000。我想知道,是否有可能得到哪个事件id发生了变化,这样我就可以执行并更新我的数据库

我初始化手表的方式如下:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }

对于那些正在寻找一种好方法来获取web钩子触发时哪些事件发生了更改的人。当您的web钩子被触发时,您将得到如下结果:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
X-Goog-Resource-URI上,您将看到如下内容:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
使用OAuth身份验证,可以对此URL发出GET请求,以获取属于此日历的所有事件。现在知道哪些资源已被更改的技巧非常简单。对于每项活动,您都会得到如下结果:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
如您所见,是一个序列:0,这是递增的。这意味着,每次对事件应用某些更改时(摘要、描述、开始日期、结束日期等)。此数字将递增+1。您可以将其保存在数据库中,所以每次web钩子触发时,您只更新序列大于保存序列的事件。所以基本上,您更新事件并保存序列的新值。下次web钩子触发时,它只会在DB上更新此条件中包含的事件


希望它有帮助,快乐编码。

适用于那些正在寻找一种好方法来获取在触发web挂钩时哪些事件发生更改的人。当您的web钩子被触发时,您将得到如下结果:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
X-Goog-Resource-URI上,您将看到如下内容:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
使用OAuth身份验证,可以对此URL发出GET请求,以获取属于此日历的所有事件。现在知道哪些资源已被更改的技巧非常简单。对于每项活动,您都会得到如下结果:

    {
      "Google_channel_ID": "19835150 - 0057 - 11e6 - bc9c - 1735798 ca540",
      "Google_channel_token": "calendar_id = 4e7 d5c20ht9lpfdtuukcsvgeq4 @group.calendar.google.com & user_id = 43e d7rxeqqce3fk09ahszc",
      "Google_channel_expiration": "Tue,12 Apr 2016 12: 34: 36 GMT",
      "Google_resource_id": "oLMEEhHAw5Xo3r2187CWykjAtm0",
      "Google_resource_URI": "https: //www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json",
      "Google_resource_state": "sync",
      "Google_message_number": "1"
   }
    exports.watch = function(req, res){
       var channel_id       = uuid.v1();
       var user_id      = req.body.user_id;
       var calendar_id     = req.body.calendar_id;

       authorize(user_id, function(oauth2Client){
          var data = {
             auth: oauth2Client,
             calendarId: calendar_id, 
             resource: {
                id: channel_id,
                token: 'calendar_id='+ calendar_id + '&user_id=' + user_id,
                address: 'https://api.medradr.com/google-watch',
                type: 'web_hook',
                params: {
                   ttl: '36000'
             }
         }
      };
      calendar.events.watch(data, function (err, response) {
          if (err) {
              console.error('The API returned an error: ' + err);
              return;
          }else{
              res.send({ok: true, message: 'Listener created', result:response}); 
          }
      });
    });
   }
    X-Goog-Channel-ID: channel-ID-value
    X-Goog-Channel-Token: channel-token-value
    X-Goog-Channel-Expiration: expiration-date-and-time // In human-readable format; present only if channel expires.
    X-Goog-Resource-ID: identifier-for-the-watched-resource
    X-Goog-Resource-URI: version-specific-URI-of-the-watched-resource
    X-Goog-Resource-State: sync
    X-Goog-Message-Number: 1
    https://www.googleapis.com/calendar/v3/calendars/4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com/events?alt=json
      { 
           event_id: 335,
           user_id: '43ed7rxeqqce3fk09ahszc',
           kind: 'calendar#event',
           etag: '"2921213870180000"',
           google_id: 'cpbcesg966skprb3rh1p1ud668',
           status: 'confirmed',
           htmlLink: 'https://www.google.com/calendar/event?eid=Y3BiY2VzZzk2NnNrcHJiM3JoMXAxdWQ2NjggNGU3ZDVjMjBodDlscGZkdHV1a2NzdmdlcTRAZw',
           created: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           updated: Thu Apr 14 2016 00:00:00 GMT-0500 (CDT),
           summary: 'Testing google notifications',
           description: '',
           creator: 'guizarkrg@gmail.com',
           organizer: '4e7d5c20ht9lpfdtuukcsvgeq4@group.calendar.google.com',
           start: Sat Apr 09 2016 00:00:00 GMT-0500 (CDT),
           end: Sun Apr 10 2016 00:00:00 GMT-0500 (CDT),
           iCalUID: 'cpbcesg966skprb3rh1p1ud668@google.com',
           event_type_id: 0,
           calendar_id: 0,
           timezone_id: 0,
           sequence: 0,
           calendar_color_id: '' 
     }
如您所见,是一个序列:0,这是递增的。这意味着,每次对事件应用某些更改时(摘要、描述、开始日期、结束日期等)。此数字将递增+1。您可以将其保存在数据库中,所以每次web钩子触发时,您只更新序列大于保存序列的事件。所以基本上,您更新事件并保存序列的新值。下次web钩子触发时,它只会在DB上更新此条件中包含的事件


希望对您有所帮助,祝您编码愉快。

重复。这个问题已经在这篇文章中得到了回答.在这篇文章中没有得到正确的回答。如果您阅读了我的第一个问题,您将看到我已成功配置推送通知,并且每次日历上发生事件时,我都会收到推送通知。真正的问题是,现在如何确定哪些事件改变了推送通知触发的事件?我已经找到了解决方案,并在这里发布了答案。重复。这个问题已经在这篇文章中得到了回答.在这篇文章中没有得到正确的回答。如果您阅读了我的第一个问题,您将看到我已成功配置推送通知,并且每次日历上发生事件时,我都会收到推送通知。真正的问题是,现在如何确定哪些事件改变了推送通知触发的事件?我已经找到了一个解决方案,并在这里发布了答案。