Zig

Azure Storage: Lease Container

See more Azure Cloud Storage Examples

Azure Storage Blob Service REST API: Sample code to establishes a lock on a container for delete operations. The lock duration can be 15 to 60 seconds, or can be infinite. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // Azure Blob Service Example: Lease Container
    // See also: https://msdn.microsoft.com/en-us/library/azure/jj159103.aspx

    // 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.blob.core.windows.net", port, b_tls, b_auto_reconnect) catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    // Provide Azure Cloud credentials for the REST call.
    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("Blob");
    // 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.

    // The lease ID needs to be a GUID.  (UUID and GUID are synonymous)
    const crypt = try chilkat.Crypt2.init();
    defer crypt.deinit();
    const guid = try crypt.generateUuid(alloc);
    std.debug.print("Lease ID: {s}\n", .{guid});
    try rest.addHeader("x-ms-lease-id", guid);

    // The action can be "acquire", "renew", "change", "release", or "break".
    // See https://msdn.microsoft.com/en-us/library/azure/jj159103.aspx
    try rest.addHeader("x-ms-lease-action", "acquire");

    // The lease duration..
    try rest.addHeader("x-ms-lease-duration", "15");

    // In this example, we are acquiring a lease for the container named "mycontainer".
    const response_str = rest.fullRequestNoBody(alloc, "PUT", "/mycontainer?restype=container&comp=lease") catch {
        std.debug.print("{s}\n", .{try rest.getLastErrorText(alloc)});
        return;
    };

    // When successful, the Azure Storage service will respond with a 200, 201, or 202 response status code,
    // with no response body.

    // The status code depends on the operation:
    //    Acquire: A successful operation returns status code 201 (Created).
    //    Renew: A successful operation returns status code 200 (OK).
    //    Change: A successful operation returns status code 200 (OK).
    //    Release: A successful operation returns status code 200 (OK).
    //    Break: A successful operation returns status code 202 (Accepted).

    if ((rest.getResponseStatusCode() < 200) or (rest.getResponseStatusCode() > 202)) {
        // 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("Success: Lease acquired.\n", .{});
}