Setting CORS Rules

If you have any questions during development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the API Reference.

You can call ObsClient.setBucketCors to set CORS rules for a bucket. If the bucket is configured with CORS rules, the newly set ones will overwrite the existing ones. Sample code is as follows:

// Import the OBS library.
// Use npm to install the client.
var ObsClient = require('esdk-obs-nodejs');
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
var obsClient = new ObsClient({
       //Obtain an AK/SK pair using environment variables or import the AK/SK pair in other ways. Using hard coding may result in leakage.
       //Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
       access_key_id: process.env.ACCESS_KEY_ID,
       secret_access_key: process.env.SECRET_ACCESS_KEY,
       server : 'https://your-endpoint'
});

obsClient.setBucketCors({
       Bucket:'bucketname',
       CorsRules:[
           {
                     // Specify the request method, which can be GET, PUT, DELETE, POST, or HEAD.
                     AllowedMethod: ['GET','HEAD','PUT'],
                     // Specify the origin of the cross-domain request.
                     AllowedOrigin: ['http://www.a.com','http://www.b.com'],
// Specify whether headers specified in Access-Control-Request-Headers in the OPTIONS request can be used. 
                     AllowedHeader: ['x-obs-header'],
                     // Specify response headers that users can access using application programs.
                     ExposeHeader: ['x-obs-expose-header'],
                     // Specify the browser's cache time of the returned results of OPTIONS requests for specific resources, in seconds.
                     MaxAgeSeconds: 10
              }
       ]
}, (err, result) => {
       if(err){
              console.log('Error-->' + err);
       }else{
              console.log('Status-->' + result.CommonMsg.Status);
       }
});

• Use the CorsRules parameter to set CORS rules for a bucket.
• Both AllowedOrigin and AllowedHeader can contain up to one wildcard character (*). The wildcard character (*) indicates that all origins or headers are allowed.