Configuring a Bucket Policy (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"
});

async function setBucketPolicy() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify a bucket policy.
      Policy: "{\"Statement\":[{\"Sid\":\"Custom-policy-2482\",\"Effect\":\"Allow\",\"Principal\":{\"ID\":[\"*\"]},\"Action\":[\"*\",\"ListBucket\"],\"Resource\":[\"examplebucket\"]}]}",
    };
    // Set a bucket policy.
    const result = await obsClient.setBucketPolicy(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("Set bucket(%s)'s policy successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

setBucketPolicy();