How to use async and await in gmail read message API












1















I tried using async/await instead of the callback for reading the Gmail



Here is the code snippet



const {google} = require('googleapis');
async function getRecentMessageBody(auth) {
const gmail = google.gmail({version: 'v1', auth});
try{
const messageId = await gmail.users.messages.list({
userId: 'me',
labelIds: 'INBOX',
maxResults: 1
});
const message = await gmail.users.messages.get({
userId: 'me',
id: messageId.data.messages[0].id,
format : 'full'
});
const value = base64url.decode(message.data.payload.body.data);
console.log(messageId);
//return value ;
}
catch(error) {
console.log('Error occurs while reading mail :'+ error);
throw error;
}
}


But the messageId is undefined



whereas if i use



gmail.users.labels.list({
userId: 'me',
}, (err, res) => {
if (err) return console.log('The API returned an error: ' + err);
const labels = res.data.labels;
if (labels.length) {
console.log('Labels:');
labels.forEach((label) => {
console.log(`- ${label.name}`);
});
} else {
console.log('No labels found.');
}
});


how to fix the issue??










share|improve this question





























    1















    I tried using async/await instead of the callback for reading the Gmail



    Here is the code snippet



    const {google} = require('googleapis');
    async function getRecentMessageBody(auth) {
    const gmail = google.gmail({version: 'v1', auth});
    try{
    const messageId = await gmail.users.messages.list({
    userId: 'me',
    labelIds: 'INBOX',
    maxResults: 1
    });
    const message = await gmail.users.messages.get({
    userId: 'me',
    id: messageId.data.messages[0].id,
    format : 'full'
    });
    const value = base64url.decode(message.data.payload.body.data);
    console.log(messageId);
    //return value ;
    }
    catch(error) {
    console.log('Error occurs while reading mail :'+ error);
    throw error;
    }
    }


    But the messageId is undefined



    whereas if i use



    gmail.users.labels.list({
    userId: 'me',
    }, (err, res) => {
    if (err) return console.log('The API returned an error: ' + err);
    const labels = res.data.labels;
    if (labels.length) {
    console.log('Labels:');
    labels.forEach((label) => {
    console.log(`- ${label.name}`);
    });
    } else {
    console.log('No labels found.');
    }
    });


    how to fix the issue??










    share|improve this question



























      1












      1








      1








      I tried using async/await instead of the callback for reading the Gmail



      Here is the code snippet



      const {google} = require('googleapis');
      async function getRecentMessageBody(auth) {
      const gmail = google.gmail({version: 'v1', auth});
      try{
      const messageId = await gmail.users.messages.list({
      userId: 'me',
      labelIds: 'INBOX',
      maxResults: 1
      });
      const message = await gmail.users.messages.get({
      userId: 'me',
      id: messageId.data.messages[0].id,
      format : 'full'
      });
      const value = base64url.decode(message.data.payload.body.data);
      console.log(messageId);
      //return value ;
      }
      catch(error) {
      console.log('Error occurs while reading mail :'+ error);
      throw error;
      }
      }


      But the messageId is undefined



      whereas if i use



      gmail.users.labels.list({
      userId: 'me',
      }, (err, res) => {
      if (err) return console.log('The API returned an error: ' + err);
      const labels = res.data.labels;
      if (labels.length) {
      console.log('Labels:');
      labels.forEach((label) => {
      console.log(`- ${label.name}`);
      });
      } else {
      console.log('No labels found.');
      }
      });


      how to fix the issue??










      share|improve this question
















      I tried using async/await instead of the callback for reading the Gmail



      Here is the code snippet



      const {google} = require('googleapis');
      async function getRecentMessageBody(auth) {
      const gmail = google.gmail({version: 'v1', auth});
      try{
      const messageId = await gmail.users.messages.list({
      userId: 'me',
      labelIds: 'INBOX',
      maxResults: 1
      });
      const message = await gmail.users.messages.get({
      userId: 'me',
      id: messageId.data.messages[0].id,
      format : 'full'
      });
      const value = base64url.decode(message.data.payload.body.data);
      console.log(messageId);
      //return value ;
      }
      catch(error) {
      console.log('Error occurs while reading mail :'+ error);
      throw error;
      }
      }


      But the messageId is undefined



      whereas if i use



      gmail.users.labels.list({
      userId: 'me',
      }, (err, res) => {
      if (err) return console.log('The API returned an error: ' + err);
      const labels = res.data.labels;
      if (labels.length) {
      console.log('Labels:');
      labels.forEach((label) => {
      console.log(`- ${label.name}`);
      });
      } else {
      console.log('No labels found.');
      }
      });


      how to fix the issue??







      async-await gmail-api google-apis-explorer






      share|improve this question















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      share|improve this question




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      edited Nov 21 '18 at 17:58







      questionar

















      asked Nov 21 '18 at 17:52









      questionarquestionar

      1089




      1089
























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          use promisfy to convert callback to promises






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            1 Answer
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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            use promisfy to convert callback to promises






            share|improve this answer




























              1














              use promisfy to convert callback to promises






              share|improve this answer


























                1












                1








                1







                use promisfy to convert callback to promises






                share|improve this answer













                use promisfy to convert callback to promises







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Dec 12 '18 at 21:58









                questionarquestionar

                1089




                1089
































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