Uploading an Object - Browser-Based (SDK for Node.js)

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

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint of the region where the bucket is located.
  server: "https://your-endpoint"
});

function createSignedUrlSync() {
  const params = {
    // Specify the bucket name.
    Bucket: "examplebucket",
    // Specify an object (example/objectname in this example).
    Key: "example/objectname",
    // Specify the validity period of the signed URL, in seconds (3600 in this example).
    Expires: 3600,
    // Specify the headers that must be carried in the request.
    FormParams: {
      'x-obs-acl': 'public-read',
      'content-type': 'text/plain'
    }
  };
  // Create a signed URL for uploading an object.
  const res = obsClient.createPostSignatureSync(params);
  console.log("OriginPolicy : %s", res.OriginPolicy);
  console.log("Policy: %s", res.Policy);
  console.log("Signature: %v", res.Signature);
};

createSignedUrlSync()