add a slightly hacky "stop" endpoint in debug mode

src/http/Server.zig

@@ -12,7 +12,7 @@ allocator: std.mem.Allocator,
 httpz_server: httpz.Server(*Context),
 context: Context,
 
-const Context = struct {
+pub const Context = struct {
     options: handler.HandleWeatherOptions,
     rate_limiter: *RateLimiter,
 
@@ -45,6 +45,7 @@ pub fn init(
     rate_limiter: *RateLimiter,
 ) !Server {
     const ctx = try allocator.create(Context);
+    errdefer allocator.destroy(ctx);
     ctx.* = .{
         .options = options,
         .rate_limiter = rate_limiter,

src/http/handler.zig

@@ -21,6 +21,9 @@ pub const HandleWeatherOptions = struct {
     geoip: *@import("../location/GeoIp.zig"),
 };
 
+/// Only used for shutdown route (/stop) in debug mode
+pub var server_instance: ?*httpz.Server(*@import("Server.zig").Context) = null;
+
 pub fn handleWeather(
     opts: *HandleWeatherOptions,
     req: *httpz.Request,
@@ -42,6 +45,11 @@ pub fn handleWeather(
             break :blk loc;
         } else break :blk client_ip; // no location, just use client ip instead
     };
+    if (server_instance) |s|
+        if (std.mem.eql(u8, location, "stop")) {
+            s.stop();
+            return;
+        };
 
     if (std.mem.eql(u8, "favicon.ico", location)) {
         res.header("Content-Type", "image/x-icon");

src/main.zig

@@ -80,7 +80,11 @@ pub fn main() !u8 {
         .geoip = &geoip,
     }, &rate_limiter);
 
+    // Only set up the server instance in debug mode
+    if (@import("builtin").mode == .Debug) @import("http/handler.zig").server_instance = &server.httpz_server;
+
     try server.listen();
+    std.debug.print("shutting down\n", .{});
     return 0;
 }