Rust

REST File Streaming Upload

See more Azure Cloud Storage Examples

Demonstrates how to stream the REST body from a file. This example demonstrates a REST upload to the Azure Cloud Storage service. Rust

// 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 Azure Storage Blob Service
let b_tls = true;
let port = 443;
let b_auto_reconnect = true;
// In this example, the storage account name is "chilkat".
if rest.connect("chilkat.blob.core.windows.net", port, b_tls, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Provide Azure Cloud credentials for the REST call.
let az_auth = chilkat::AuthAzureStorage::new();
az_auth.set_access_key("AZURE_ACCESS_KEY");
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
az_auth.set_account("chilkat");
az_auth.set_scheme("SharedKey");
az_auth.set_service("Blob");
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
az_auth.set_x_ms_version("2021-08-06");
let _ = rest.set_auth_azure_storage(&az_auth).is_ok();

// Set some request headers.
let _ = rest.add_header("x-ms-blob-content-disposition", "attachment; filename=\"hamlet.xml\"").is_ok();
let _ = rest.add_header("x-ms-blob-type", "BlockBlob").is_ok();
let _ = rest.add_header("x-ms-meta-m1", "v1").is_ok();
let _ = rest.add_header("x-ms-meta-m2", "v2").is_ok();

// Note: The application does not need to explicitly set the following
// headers: x-ms-date, Authorization, and Content-Length.  These headers
// are automatically set by Chilkat.

let file_stream = chilkat::Stream::new();
file_stream.set_source_file("qa_data/xml/hamlet.xml");

// Upload to the Azure Cloud Storage service.
// The file is streamed, so the full file never has to completely reside in memory.
// The file is uploaded to the container named "test".
let Ok(response_str) = rest.full_request_stream("PUT", "/test/hamlet.xml", &file_stream) else {
    println!("{}", rest.last_error_text());
    return;
};

// When successful, the Azure Storage service will respond with a 201 response code,
// with an empty body.  Therefore, in the success condition, the responseStr is empty.
if rest.response_status_code() == 201 {
    println!("File uploaded.");
} else {
    // Examine the request/response to see what happened.
    println!("response status code = {}", rest.response_status_code());
    println!("response status text = {}", rest.response_status_text());
    println!("response header: {}", rest.response_header());
    println!("response body (if any): {}", response_str);
    println!("---");
    println!("LastRequestStartLine: {}", rest.last_request_start_line());
    println!("LastRequestHeader: {}", rest.last_request_header());
}