Rust

Azure File Service: Upload File

See more Azure Cloud Storage Examples

Sample code to upload a file to a directory in a share in the Azure File Service. A file is uploaded by first creating the file in the Azure share and then writes a range of bytes to the file. Azure imposes a 4MB limit for each PUT to write a range. Files larger than 4MB need to be uploaded by making multiple "Put Range" calls. This example uploads a file small enough for a single "Put Range" call. Rust

// Azure File Service Example: Upload a file.  
// See:  https://docs.microsoft.com/en-us/rest/api/storageservices/create-share
// also see: https://docs.microsoft.com/en-us/rest/api/storageservices/put-range

// 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.file.core.windows.net", port, b_tls, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// This example will upload a relatively small file (760K), so it may as well 
// just be load it into memory..
let jpg_data = chilkat::BinData::new();
let _ = jpg_data.load_file("qa_data/jpg/penguins.jpg");

// Provide Azure Cloud credentials for the REST calls.
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("File");
// 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();

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

// However, a few additional headers are required for the "Create File" operation:
let _ = rest.add_header("x-ms-type", "file");

// This required header specifies the final size of the file (or the maximum size it can be).
let sb_file_size = chilkat::StringBuilder::new();
let _ = sb_file_size.append_int(jpg_data.num_bytes());
let _ = rest.add_header("x-ms-content-length", &sb_file_size.get_as_string().unwrap_or_default());

// Send a PUT request to create the file (or replace the file if it already exists).
// This will initialize the file in the Azure file storage.  To upload content, we'll need
// to do the "Put Range" operation one or more times.

// The following will create the file "penguins.jpg" in the share "pip", in the directory "/wildlife/antarctic"
let Ok(response_str) = rest.full_request_no_body("PUT", "/pip/wildlife/antarctic/penguins.jpg") else {
    println!("{}", rest.last_error_text());
    return;
};

// When successful, the Azure File Service will respond with a 201 (Created) response status code,
// with no XML response body.  If an error response is returned, there will be an XML response body.

if rest.response_status_code() != 201 {
    // 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());
    return;
}

println!("Successfully created penguins.jpg");

// --------------------------------------------------------------------------------
// Upload the file data...

// Make sure the headers from the "Create File" operation are removed.
let _ = rest.clear_all_headers();

// The only tricky part here is to correctly add the x-ms-range header.
// It will be formatted like this:
// x-ms-range: bytes=0-759623

let sb_range = chilkat::StringBuilder::new();
let _ = sb_range.append("bytes=0-");
let _ = sb_range.append_int(jpg_data.num_bytes() - 1);

let _ = rest.add_header("x-ms-range", &sb_range.get_as_string().unwrap_or_default());

// The x-ms-write header is also required:
let _ = rest.add_header("x-ms-write", "update");

let sb_response_body = chilkat::StringBuilder::new();
// IMPORTANT:  Don't forget the "?comp=range" at the end of the path passed in the 2nd argument.
if rest.full_request_bd("PUT", "/pip/wildlife/antarctic/penguins.jpg?comp=range", &jpg_data, &sb_response_body).is_err() {
    // This would indicate a failure where no response was received.
    println!("{}", rest.last_error_text());
    return;
}

// A 201 response indicates the data was uploaded.
if rest.response_status_code() != 201 {
    // 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());
    return;
}

println!("Successfully uploaded data into penguins.jpg");