Zig Requires Chilkat v11.0.0+

Create S3 Pre-Signed URL for Upload

See more Amazon S3 Examples

Demonstrates how to generate a pre-signed URL for S3 uploads. 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.

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

    http.setAwsAccessKey("AWS_ACCESS_KEY");
    http.setAwsSecretKey("AWS_SECRET_KEY");

    // Make sure to set your AWS region correctly
    http.setAwsRegion("us-east-1");

    const bucket_name = "chilkat200";
    const object_name = "starfish/starfish.jpg";
    const aws_service = "s3";
    const http_verb = "PUT";

    // The signed URL will be valid for this number of seconds:
    const num_seconds_valid = 86400;

    // Choose between a URL beginning with "http://" or "https://"...
    const b_use_https = true;

    // Generate the pre-signed URL
    const pre_signed_url = http.s3GenPresignedUrl(alloc, http_verb, b_use_https, bucket_name, object_name, num_seconds_valid, aws_service) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Presigned URL for Upload: {s}\n", .{pre_signed_url});

    // Here's an example of a pre-signed URL
    //
    // http://chilkat200.s3.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIBJLOVZVXAU2AFUA%2F20200623%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200623T234049Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=xxxxxeaea071178d772856c0a4e4c0114a8d9992f0d0812955e490d0exxxxxxx
    //

    // You can use the pre-signed URL to upload from Chilkat
    // For example, upload by streaming from a local file
    const resp = try chilkat.HttpResponse.init();
    defer resp.deinit();
    http.httpFile("PUT", pre_signed_url, "qa_data/jpg/starfish.jpg", "image/jpg", resp) catch {
        std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("response status code = {d}\n", .{resp.getStatusCode()});
    std.debug.print("response body size: {d}\n", .{resp.getContentLength()});
    if (resp.getContentLength() > 0) {
        std.debug.print("response body:\n", .{});
        std.debug.print("{s}\n", .{try resp.getBodyStr(alloc)});
    }
}