Dart

Google Cloud Storage List Buckets

See more Google Cloud Storage Examples

Demonstrates how to retrieve a list of buckets for a given project. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // This example uses a previously obtained access token having permission for the 
  // scope "https://www.googleapis.com/auth/cloud-platform"

  final jsonToken = CkJsonObject();
  try {
    jsonToken.loadFile('qa_data/tokens/googleCloudStorage.json');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final http = CkHttp();
  http.authToken = jsonToken.stringOf('access_token');

  // For more info see Cloud Storage Documentation - Buckets: list 
  // 
  http.setUrlVar('PROJECT_ID', 'chilkattest-1050');
  final resp = CkHttpResponse();
  try {
    http.httpNoBody('GET', 'https://www.googleapis.com/storage/v1/b?project={\$PROJECT_ID}', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final responseCode = resp.statusCode;
  if (responseCode == 401) {
    print(resp.bodyStr);
    print('If invalid credentials, then it is likely the access token expired.');
    print('Your app should automatically fetch a new access token and re-try.');
    return;
  }

  print('Response code: $responseCode');
  print('Response body');

  final json = CkJsonObject();
  json.load(resp.bodyStr);

  json.emitCompact = false;

  print(json.emit());

  // A response code = 200 indicates success, and the response body contains JSON such as this:

  // {
  //   "kind": "storage#buckets",
  //   "items": [
  //     {
  //       "kind": "storage#bucket",
  //       "id": "chilkat-bucket",
  //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket",
  //       "projectNumber": "5332332985",
  //       "name": "chilkat-bucket",
  //       "timeCreated": "2018-10-23T00:04:44.507Z",
  //       "updated": "2018-10-23T00:04:44.507Z",
  //       "metageneration": "1",
  //       "iamConfiguration": {
  //         "bucketPolicyOnly": {
  //           "enabled": false
  //         }
  //       },
  //       "location": "US",
  //       "storageClass": "MULTI_REGIONAL",
  //       "etag": "CAE="
  //     },
  //     {
  //       "kind": "storage#bucket",
  //       "id": "chilkat-images",
  //       "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-images",
  //       "projectNumber": "5332332985",
  //       "name": "chilkat-images",
  //       "timeCreated": "2018-10-23T11:24:43.000Z",
  //       "updated": "2018-10-23T11:24:43.000Z",
  //       "metageneration": "1",
  //       "iamConfiguration": {
  //         "bucketPolicyOnly": {
  //           "enabled": false
  //         }
  //       },
  //       "location": "US",
  //       "storageClass": "MULTI_REGIONAL",
  //       "etag": "CAE="
  //     }
  //   ]
  // }

  // Use this online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  var kind = '';
  var i = 0;
  var id = '';
  var selfLink = '';
  var projectNumber = '';
  var name = '';
  var timeCreated = '';
  var updated = '';
  var metageneration = '';
  var location = '';
  var storageClass = '';
  var etag = '';

  kind = json.stringOf('kind');
  i = 0;
  final countI = json.sizeOfArray('items');
  while (i < countI) {
    json.i = i;
    kind = json.stringOf('items[i].kind');
    id = json.stringOf('items[i].id');
    selfLink = json.stringOf('items[i].selfLink');
    projectNumber = json.stringOf('items[i].projectNumber');
    name = json.stringOf('items[i].name');
    timeCreated = json.stringOf('items[i].timeCreated');
    updated = json.stringOf('items[i].updated');
    metageneration = json.stringOf('items[i].metageneration');
    json.boolOf('items[i].iamConfiguration.bucketPolicyOnly.enabled');
    location = json.stringOf('items[i].location');
    storageClass = json.stringOf('items[i].storageClass');
    etag = json.stringOf('items[i].etag');
    i++;
  }
}