Rust

S3 Upload String using AWS Signature Version 2

See more Amazon S3 (new) Examples

Example to upload the contents of a string to the Amazon S3 service, using the older AWS Signature Version 2. Rust

// Demonstrates how to use older AWS S3 Signature Version 2 for uploading the contents
// of a string variable to an object in a bucket.

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

let rest = chilkat::Rest::new();

// Connect to the Amazon AWS REST server.
let b_tls = true;
let port = 443;
let b_auto_reconnect = true;
// The file is uploaded to the bucket named "chilkat100", which becomes part of the domain:
let _ = rest.connect("chilkat100.s3.amazonaws.com", port, b_tls, b_auto_reconnect).is_ok();

// ----------------------------------------------------------------------------
// Important: For buckets created in regions outside us-east-1,
// there are three important changes that need to be made.
// See Working with S3 Buckets in Non-us-east-1 Regions for the details.
// ----------------------------------------------------------------------------

// Provide AWS credentials for the REST call.
let auth_aws = chilkat::AuthAws::new();
auth_aws.set_access_key("AWS_ACCESS_KEY");
auth_aws.set_secret_key("AWS_SECRET_KEY");
auth_aws.set_service_name("s3");

// For AWS Signature Version 2, the following two properties need to be set:
auth_aws.set_signature_version(2);
// See http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#ConstructingTheCanonicalizedResourceElement
// The bucket is "chilkat100", and the uriPath is "/hamlet_play.xml", which must match
// the URI path passed to the FullRequestString method below.
auth_aws.set_canonicalized_resource_v2("/chilkat100/hamlet_play.xml");

let _ = rest.set_auth_aws(&auth_aws).is_ok();

// Load a text file into memory.
let fac = chilkat::FileAccess::new();
let Ok(file_contents) = fac.read_entire_text_file("qa_data/xml/hamlet.xml", "utf-8") else {
    println!("{}", fac.last_error_text());
    return;
};

// To send the file in gzip or deflate compressed format, set the Content-Encoding request
// header to "gzip" or "deflate".  (this is optional)
let _ = rest.add_header("Content-Encoding", "gzip").is_ok();

// Indicate the Content-Type of our upload.  (This is optional)
let _ = rest.add_header("Content-Type", "text/xml").is_ok();

// We can add an "Expect: 100-continue" header so that if the request is rejected
// by the server immediately after receiving the request header, it can respond
// and the client (Chilkat) can avoid sending the file data.
// (this is optional)
let _ = rest.add_header("Expect", "100-continue").is_ok();

// Upload the file to Amazon S3.
let Ok(response_body_str) = rest.full_request_string("PUT", "/hamlet_play.xml", &file_contents) else {
    println!("{}", rest.last_error_text());
    return;
};

// Did we get a 200 response indicating success?
let status_code = rest.response_status_code();
if status_code != 200 {
    println!("Error response: {}", response_body_str);
    println!("Status code: {}, Status text: {}", status_code, rest.response_status_text());
    return;
}

println!("File successfully uploaded.");