Zig Requires Chilkat v11.0.0+

Google Drive - Resumable Upload

See more Google Drive Examples

Demonstrates how to do a resumable upload to Google Drive. Zig

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

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

    var success: bool = false;

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

    success = true;

    // This example uses a previously obtained access token having permission for the
    // Google Drive scope.
    // See Get Google Drive OAuth2 Access Token

    const http = try chilkat.Http.init();
    defer http.deinit();

    http.setAuthToken("GOOGLE_DRIVE_ACCESS_TOKEN");

    // First we want to initiate the resumable upload.
    // We send a POST to get a session URI, which will be used to upload the file, and resume if needed.

    // Our POST will look like this:

    // POST https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable HTTP/1.1
    // Authorization: Bearer [YOUR_AUTH_TOKEN]          <-- Chilkat automatically adds this header because the AuthToken property was set.
    // Content-Length: 38                               <-- Chilkat will automatically add this header.
    // Content-Type: application/json; charset=UTF-8    <-- This is the type of this POST, and is specified in the call to HttpJson.
    // X-Upload-Content-Type: application/zip           <-- The type of file we'll be uploading
    // X-Upload-Content-Length: 1366807                 <-- The size of the file we'll be uploading
    //
    // {
    //   "name": "myObject"
    // }

    http.setRequestHeader("X-Upload-Content-Type", "application/zip");
    http.setRequestHeader("X-Upload-Content-Length", "1366807");

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.updateString("name", "myZip") catch {};

    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpJson("POST", "https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable", json, "application/json", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    const status_code = resp.getStatusCode();
    if (status_code != 200) {
        std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});
        std.debug.print("response status = {d}\n", .{status_code});
        return;
    }

    // The session URI is in the "Location" response header:
    const sb_session_uri = try chilkat.StringBuilder.init();
    defer sb_session_uri.deinit();
    sb_session_uri.append(try resp.getHeaderField(alloc, "Location")) catch {};
    const session_uri = try sb_session_uri.getAsString(alloc);
    std.debug.print("Session URI: {s}\n", .{session_uri});

    // Here's a sample session URI:  https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=AEnB2UrszR8lDqlo3mtXJw_0rYI_Hi1oVh1NPFcLfoyBq9NcSjk85kFopoZaVEgT38OSmLl0XsObPf4iCSJwHlrOvvIJQ_ckIQ

    // -----------------------------------------------------------------------------
    // The next step is to upload the file using the session URI:

    // We'll send a PUT that looks like this:

    // PUT https://www.googleapis.com/upload/drive/v3/files?uploadType=resumable&upload_id=xa298sd_sdlkj2 HTTP/1.1
    // Content-Length: 1366807
    // Content-Type: application/zip
    //
    // [BYTES 0-1366806]

    // First remove the X-Upload-Content-Type and X-Upload-Content-Length request headers we specified earlier, so they don't get sent with subsequent requests.
    http.clearHeaders();

    // Because the file is likely large, we'll use HttpSReq which allows to to pass an HTTP request object where the body can be streamed directly from a file.
    const req = try chilkat.HttpRequest.init();
    defer req.deinit();

    req.setContentType("application/zip");
    req.setHttpVerb("PUT");

    const url = try chilkat.Url.init();
    defer url.deinit();
    url.parseUrl(session_uri) catch {};

    req.setPath(try url.getPathWithQueryParams(alloc));
    std.debug.print("Path with Query Param: {s}\n", .{try url.getPathWithQueryParams(alloc)});

    // Specify that the request body is to be streamed directly from a file.
    req.streamBodyFromFile("qa_data/zips/big.zip") catch {
        std.debug.print("{s}\n", .{try req.getLastErrorText(alloc)});
        return;
    };

    http.httpSReq(try url.getHost(alloc), url.getPort(), url.getSsl(), req, resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});
    std.debug.print("response status = {d}\n", .{resp.getStatusCode()});

    // Sample output:

    // {
    //  "kind": "drive#file",
    //  "id": "1rx20i53eurtkVQ-RT7Ry8Ct85PgPYMET",
    //  "name": "myZip",
    //  "mimeType": "application/zip"
    // }
    //
    // response status = 200
}