tencent cloud

npm i cos-nodejs-sdk-v5 --save

var request = require('request');
var COS = require('cos-nodejs-sdk-v5');
var cos = new COS({
    getAuthorization: function (options, callback) {
        // It will not be called during initialization and will be entered only when a COS method such as `cos.putObject` is called.
        // Get a temporary key asynchronously.
        request({
            url: 'https://example.com/sts',
            data: {
                // The required parameters can be obtained from options.
            }
        }, function (err, response, body) {
            try {
                var data = JSON.parse(body);
                var credentials = data.credentials;
            } catch(e) {}
            if (!data || !credentials) return console.error('credentials invalid');
            callback({
                TmpSecretId: credentials.tmpSecretId, // tmpSecretId of the temporary key
                TmpSecretKey: credentials.tmpSecretKey, // tmpSecretKey of the temporary key
                SecurityToken: credentials.sessionToken, // sessionToken of the temporary key
                ExpiredTime: data.expiredTime, // Expiration timestamp of the temporary key, which is calculated by adding durationSeconds to the timestamp when applying for the temporary key 
            });
        });
    }
});

// Log in to https://console.tencentcloud.com/cam/capi to check and manage the SecretId and SecretKey of your project.
var COS = require('cos-nodejs-sdk-v5');
var cos = new COS({
    SecretId: process.env.SecretId, // User `SecretId`. We recommend you obtain it from the environment variable. In addition, we recommended you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
    SecretKey: process.env.SecretKey, // User `SecretKey`. We recommend you obtain it from the environment variable. In addition, we recommend you use a sub-account key and follow the principle of least privilege to reduce risks. For information about how to obtain a sub-account key, visit https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1.
});

getAuthorization: function(options, callback) { ... }

getAuthorization: function(options, callback) { ... }

// The initialization process and upload parameters are omitted here.
var cos = new COS({ ... });
cos.uploadFile({ ... }, function(err, data) {
  if (err) {
    console.log('Upload failed', err);
  } else {
    console.log('Uploaded successfully', data);
  }
});

// The initialization process and upload parameters are omitted here.
var cos = new COS({ ... });
cos.uploadFile({ ... }).then(data => {
  console.log('Uploaded successfully', data);
}).catch(err => {
  console.log('Upload failed', err);
});

async function upload() {
  // The initialization process and upload parameters are omitted here.
  var cos = new COS({ ... });
  try {
    var data = await cos.uploadFile({ ... });
    return { err: null, data: data }
  } catch (err) {
    return { err: err, data: null };
  }
}
// The returned value of the request can be obtained synchronously. Here is only an example. The format of the actual returned data can be customized.
var uploadResult = await upload();
if (uploadResult.err) {
  console.log('Upload failed', uploadResult.err);
} else {
  console.log('Uploaded successfully', uploadResult.data);
}

var cos = new COS({
  ....
});

/* Self-encapsulated upload method */
function myUpload() {
  // COS SDK instances do not need to be created in each method
  // var cos = new COS({
  //   ...
  // });
  cos.putObject({
    ....
  });
}

/* Self-encapsulated deletion method */
function myDelete() {
  // COS SDK instances do not need to be created in each method
  // var cos = new COS({
  //   ...
  // });
  cos.deleteObject({
    ....
  });
}

cos.putBucket({
    Bucket: 'examplebucket-1250000000',
    Region: 'COS_REGION'
}, function(err, data) {
    console.log(err || data);
});

cos.getService(function (err, data) {
    console.log(data && data.Buckets);
});

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Required */
    Region: 'COS_REGION', /* Required */
    Key: 'exampleobject', /* Required */
    StorageClass: 'STANDARD',
    Body: fs.createReadStream('./exampleobject'), // Uploading file object
    onProgress: function(progressData) {
        console.log(JSON.stringify(progressData));
    }
}, function(err, data) {
    console.log(err || data);
});

cos.getBucket({
    Bucket: 'examplebucket-1250000000', /* Required */
    Region: 'COS_REGION', /* Required */
    Prefix: 'a/', /*Optional*/
}, function(err, data) {
    console.log(err || data.Contents);
});

cos.getObject({
    Bucket: 'examplebucket-1250000000', /* Required */
    Region: 'COS_REGION', /* Required */
    Key: 'exampleobject', /* Required */
    Output: fs.createWriteStream('./exampleobject'),
}, function(err, data) {
    console.log(err || data);
});