Zig
Zig
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.Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// 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.
const rest = try chilkat.Rest.init();
defer rest.deinit();
// Connect to the Azure Storage Blob Service
const b_tls = true;
const port = 443;
const b_auto_reconnect = true;
// In this example, the storage account name is "chilkat".
rest.connect("chilkat.file.core.windows.net", port, b_tls, b_auto_reconnect) catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// This example will upload a relatively small file (760K), so it may as well
// just be load it into memory..
const jpg_data = try chilkat.BinData.init();
defer jpg_data.deinit();
jpg_data.loadFile("qa_data/jpg/penguins.jpg") catch {};
// Provide Azure Cloud credentials for the REST calls.
const az_auth = try chilkat.AuthAzureStorage.init();
defer az_auth.deinit();
az_auth.setAccessKey("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.setAccount("chilkat");
az_auth.setScheme("SharedKey");
az_auth.setService("File");
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
az_auth.setXMsVersion("2021-08-06");
try rest.setAuthAzureStorage(az_auth);
// 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:
rest.addHeader("x-ms-type", "file") catch {};
// This required header specifies the final size of the file (or the maximum size it can be).
const sb_file_size = try chilkat.StringBuilder.init();
defer sb_file_size.deinit();
sb_file_size.appendInt(jpg_data.getNumBytes()) catch {};
rest.addHeader("x-ms-content-length", try sb_file_size.getAsString(alloc)) catch {};
// 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"
const response_str = rest.fullRequestNoBody(alloc, "PUT", "/pip/wildlife/antarctic/penguins.jpg") catch {
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
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.getResponseStatusCode() != 201) {
// Examine the request/response to see what happened.
std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
std.debug.print("response body (if any): {s}\n", .{response_str});
std.debug.print("---\n", .{});
std.debug.print("LastRequestStartLine: {s}\n", .{try rest.getLastRequestStartLine(alloc)});
std.debug.print("LastRequestHeader: {s}\n", .{try rest.getLastRequestHeader(alloc)});
return;
}
std.debug.print("Successfully created penguins.jpg\n", .{});
// --------------------------------------------------------------------------------
// Upload the file data...
// Make sure the headers from the "Create File" operation are removed.
rest.clearAllHeaders() catch {};
// 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
const sb_range = try chilkat.StringBuilder.init();
defer sb_range.deinit();
sb_range.append("bytes=0-") catch {};
sb_range.appendInt(jpg_data.getNumBytes() - 1) catch {};
rest.addHeader("x-ms-range", try sb_range.getAsString(alloc)) catch {};
// The x-ms-write header is also required:
rest.addHeader("x-ms-write", "update") catch {};
const sb_response_body = try chilkat.StringBuilder.init();
defer sb_response_body.deinit();
// IMPORTANT: Don't forget the "?comp=range" at the end of the path passed in the 2nd argument.
rest.fullRequestBd("PUT", "/pip/wildlife/antarctic/penguins.jpg?comp=range", jpg_data, sb_response_body) catch {
// This would indicate a failure where no response was received.
std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
return;
};
// A 201 response indicates the data was uploaded.
if (rest.getResponseStatusCode() != 201) {
// Examine the request/response to see what happened.
std.debug.print("response status code = {d}\n", .{rest.getResponseStatusCode()});
std.debug.print("response status text = {s}\n", .{try rest.getResponseStatusText(alloc)});
std.debug.print("response header: {s}\n", .{try rest.getResponseHeader(alloc)});
std.debug.print("response body (if any): {s}\n", .{response_str});
std.debug.print("---\n", .{});
std.debug.print("LastRequestStartLine: {s}\n", .{try rest.getLastRequestStartLine(alloc)});
std.debug.print("LastRequestHeader: {s}\n", .{try rest.getLastRequestHeader(alloc)});
return;
}
std.debug.print("Successfully uploaded data into penguins.jpg\n", .{});
}