Zig Requires Chilkat v11.0.0+
Upload String to Google Cloud Storage

Demonstrates how to upload an in-memory string to Google Cloud Storage.
Chilkat Zig Downloads

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"

    // In this example, Get Google Cloud Storage OAuth2 Access Token,
    // the service account access token was saved to a text file.  This example fetches the access token from the file..
    const sb_token = try chilkat.StringBuilder.init();
    defer sb_token.deinit();
    sb_token.loadFile("qa_data/tokens/googleCloudStorageAccessToken.txt", "utf-8") catch {};

    // Send a POST equivalent to this curl command.
    // The content of the file is contained in the request body.

    // curl -X POST --data-binary @[OBJECT] \
    //     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
    //     -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
    //     "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

    const http = try chilkat.Http.init();
    defer http.deinit();
    http.setAuthToken(try sb_token.getAsString(alloc));

    // Create an XML document, and write it to a StringBuilder.
    // We'll be uploading this XML document.
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.setTag("note");
    xml.updateChildContent("to", "Tove");
    xml.updateChildContent("from", "Jani");
    xml.updateChildContent("heading", "Reminder");
    xml.updateChildContent("body", "Don't forget me this weekend!");

    // Write the XML to sbXml.
    const sb_xml = try chilkat.StringBuilder.init();
    defer sb_xml.deinit();
    xml.getXmlSb(sb_xml) catch {};

    // sbXml contains this:

    // <note>
    //     <to>Tove</to>
    //     <from>Jani</from>
    //     <heading>Reminder</heading>
    //     <body>Don't forget me this weekend!</body>
    // </note>

    // Construct a URL to upload to an object named "test.xml" in the "chilkat-ocean" bucket.
    http.setUrlVar("bucket_name", "chilkat-ocean") catch {};
    http.setUrlVar("object_name", "test.xml") catch {};
    const url = "https://www.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=media&name={$object_name}";

    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpSb("POST", url, sb_xml, "utf-8", "application/xml", 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", .{});
    std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});

    // A successful response looks like this:
    // Response code: 200
    // Response body
    // {
    //  "kind": "storage#object",
    //  "id": "chilkat-ocean/test.xml/1502669565429870",
    //  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/test.xml",
    //  "name": "test.xml",
    //  "bucket": "chilkat-ocean",
    //  "generation": "1502669565429870",
    //  "metageneration": "1",
    //  "contentType": "application/xml",
    //  "timeCreated": "2017-08-14T00:12:45.379Z",
    //  "updated": "2017-08-14T00:12:45.379Z",
    //  "storageClass": "MULTI_REGIONAL",
    //  "timeStorageClassUpdated": "2017-08-14T00:12:45.379Z",
    //  "size": "181",
    //  "md5Hash": "TCR0L7TWsw2TzOvfNvgEfA==",
    //  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/test.xml?generation=1502669565429870&alt=media",
    //  "crc32c": "ZFd5sA==",
    //  "etag": "CO6Qpq241dUCEAE="
    // }
}