Zig Requires Chilkat v11.0.0+

Upload In-Memory Binary Data to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload in-memory binary data to Google Cloud Storage. 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();

    // Download a JPG image from the Internet, and then upload this JPG to
    // a Google Storage bucket.
    const jpg_url = "https://www.chilkatsoft.com/images/starfish.jpg";

    const jpg_data = try chilkat.BinData.init();
    defer jpg_data.deinit();
    http.downloadBd(jpg_url, jpg_data) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    http.setAuthToken(try sb_token.getAsString(alloc));

    // Construct a URL to upload to an object named "starfish.jpg" in the "chilkat-ocean" bucket.
    http.setUrlVar("bucket_name", "chilkat-ocean") catch {};
    http.setUrlVar("object_name", "starfish.jpg") 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.httpBd("POST", url, jpg_data, "image/jpeg", 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/starfish.jpg/1502670320090292",
    //  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg",
    //  "name": "starfish.jpg",
    //  "bucket": "chilkat-ocean",
    //  "generation": "1502670320090292",
    //  "metageneration": "1",
    //  "contentType": "image/jpeg",
    //  "timeCreated": "2017-08-14T00:25:20.040Z",
    //  "updated": "2017-08-14T00:25:20.040Z",
    //  "storageClass": "MULTI_REGIONAL",
    //  "timeStorageClassUpdated": "2017-08-14T00:25:20.040Z",
    //  "size": "6229",
    //  "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
    //  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/starfish.jpg?generation=1502670320090292&alt=media",
    //  "crc32c": "9RjgwQ==",
    //  "etag": "CLT5kpW71dUCEAE="
    // }
}