Zig

Google Cloud Storage List Buckets

See more Google Cloud Storage Examples

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

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // 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"

    const json_token = try chilkat.JsonObject.init();
    defer json_token.deinit();
    json_token.loadFile("qa_data/tokens/googleCloudStorage.json") catch {
        std.debug.print("{s}\n", .{try json_token.getLastErrorText(alloc)});
        return;
    };

    const http = try chilkat.Http.init();
    defer http.deinit();
    http.setAuthToken(try json_token.stringOf(alloc, "access_token"));

    // For more info see Cloud Storage Documentation - Buckets: list 
    //
    try http.setUrlVar("PROJECT_ID", "chilkattest-1050");
    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpNoBody("GET", "https://www.googleapis.com/storage/v1/b?project={$PROJECT_ID}", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    const response_code = resp.getStatusCode();
    if (response_code == 401) {
        std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});
        std.debug.print("If invalid credentials, then it is likely the access token expired.\n", .{});
        std.debug.print("Your app should automatically fetch a new access token and re-try.\n", .{});
        return;
    }

    std.debug.print("Response code: {d}\n", .{response_code});
    std.debug.print("Response body\n", .{});

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    try json.load(try resp.getBodyStr(alloc));

    json.setEmitCompact(false);

    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // 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: [:0]const u8 = "";
    var i: i32 = 0;
    var id: [:0]const u8 = "";
    var self_link: [:0]const u8 = "";
    var project_number: [:0]const u8 = "";
    var name: [:0]const u8 = "";
    var time_created: [:0]const u8 = "";
    var updated: [:0]const u8 = "";
    var metageneration: [:0]const u8 = "";
    var iam_configuration_bucket_policy_only_enabled: bool = false;
    var location: [:0]const u8 = "";
    var storage_class: [:0]const u8 = "";
    var etag: [:0]const u8 = "";

    kind = try json.stringOf(alloc, "kind");
    i = 0;
    const count_i = json.sizeOfArray("items");
    while (i < count_i) {
        json.setI(i);
        kind = try json.stringOf(alloc, "items[i].kind");
        id = try json.stringOf(alloc, "items[i].id");
        self_link = try json.stringOf(alloc, "items[i].selfLink");
        project_number = try json.stringOf(alloc, "items[i].projectNumber");
        name = try json.stringOf(alloc, "items[i].name");
        time_created = try json.stringOf(alloc, "items[i].timeCreated");
        updated = try json.stringOf(alloc, "items[i].updated");
        metageneration = try json.stringOf(alloc, "items[i].metageneration");
        iam_configuration_bucket_policy_only_enabled = json.boolOf("items[i].iamConfiguration.bucketPolicyOnly.enabled");
        location = try json.stringOf(alloc, "items[i].location");
        storage_class = try json.stringOf(alloc, "items[i].storageClass");
        etag = try json.stringOf(alloc, "items[i].etag");
        i = i + 1;
    }
}