lobo/universal-lambda-zig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

zig 0.12.0: bring all of runStandaloneServer under test

Browse source
This commit is contained in:
Emil Lerch 2024-05-08 10:23:40 -07:00
parent 1053c8f002
commit c3e1ffc2ef
Signed by: lobo
GPG key ID: A7B62D657EF764F8
2 changed files with 53 additions and 44 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
build.zig
View file

@ -96,6 +96,7 @@ pub fn build(b: *std.Build) !void {
// Creates steps for unit testing. This only builds the test executable
// but does not run it.
const exe_tests = b.addTest(.{
.name = "test: as executable",
.root_source_file = .{ .path = "src/test.zig" },
.target = b.resolveTargetQuery(t),
.optimize = optimize,
@ -115,6 +116,7 @@ pub fn build(b: *std.Build) !void {
// in the future. Scaleway, for instance, is another system that works
// via shared library
const lib_tests = b.addTest(.{
.name = "test: as library",
.root_source_file = .{ .path = "src/flexilib.zig" },
.target = b.resolveTargetQuery(t),
.optimize = optimize,

95
src/universal_lambda.zig
View file

@ -1,3 +1,4 @@
const builtin = @import("builtin");
const std = @import("std");
const build_options = @import("universal_lambda_build_options");
const flexilib = @import("flexilib-interface");
@ -46,7 +47,8 @@ fn runStandaloneServerParent(allocator: ?std.mem.Allocator, event_handler: inter
while (argi.next()) |a| {
if (std.mem.eql(u8, child_arg, a)) {
// This should never actually return
return try runStandaloneServer(allocator, event_handler);
try runStandaloneServer(allocator, event_handler, 8080); // TODO: configurable port
return 0;
}
try al.append(a);
}
@ -66,27 +68,25 @@ fn runStandaloneServerParent(allocator: ?std.mem.Allocator, event_handler: inter
/// Will create a web server and marshall all requests back to our event handler
/// To keep things simple, we'll have this on a single thread, at least for now
fn runStandaloneServer(allocator: ?std.mem.Allocator, event_handler: interface.HandlerFn) !u8 {
// TODO: Get this under test. It doesn't work in zig 0.12.0
fn runStandaloneServer(allocator: ?std.mem.Allocator, event_handler: interface.HandlerFn, port: u16) !void {
const alloc = allocator orelse std.heap.page_allocator;
var arena = std.heap.ArenaAllocator.init(alloc);
defer arena.deinit();
var aa = arena.allocator();
var server = std.http.Server.init(aa, .{ .reuse_address = true });
defer server.deinit();
const address = try std.net.Address.parseIp("127.0.0.1", 8080); // TODO: allow config
try server.listen(address);
const server_port = server.socket.listen_address.in.getPort();
var uri: ["http://127.0.0.1:99999".len]u8 = undefined;
_ = try std.fmt.bufPrint(&uri, "http://127.0.0.1:{d}", .{server_port});
log.info("server listening at {s}", .{uri});
const address = try std.net.Address.parseIp("127.0.0.1", port);
var net_server = try address.listen(.{ .reuse_address = true });
const server_port = net_server.listen_address.in.getPort();
_ = try std.fmt.bufPrint(&server_url, "http://127.0.0.1:{d}", .{server_port});
log.info("server listening at {s}", .{server_url});
if (builtin.is_test) server_ready = true;
// No threads, maybe later
//log.info("starting server thread, tid {d}", .{std.Thread.getCurrentId()});
while (true) {
while (remaining_requests == null or remaining_requests.? > 0) {
defer {
if (remaining_requests) |*r| r.* -= 1;
if (!arena.reset(.{ .retain_with_limit = 1024 * 1024 })) {
// reallocation failed, arena is degraded
log.warn("Arena reset failed and is degraded. Resetting arena", .{});
@ -95,19 +95,20 @@ fn runStandaloneServer(allocator: ?std.mem.Allocator, event_handler: interface.H
aa = arena.allocator();
}
}
const builtin = @import("builtin");
const supports_getrusage = builtin.os.tag != .windows and @hasDecl(std.os.system, "rusage"); // Is Windows it?
var rss: if (supports_getrusage) std.os.rusage else void = undefined;
const supports_getrusage = builtin.os.tag != .windows and @hasDecl(std.posix.system, "rusage"); // Is Windows it?
var rss: if (supports_getrusage) std.posix.rusage else void = undefined;
if (supports_getrusage and builtin.mode == .Debug)
rss = std.os.getrusage(std.os.rusage.SELF);
processRequest(aa, &server, event_handler) catch |e| {
rss = std.posix.getrusage(std.posix.rusage.SELF);
if (builtin.is_test) bytes_allocated = arena.queryCapacity();
processRequest(aa, &net_server, event_handler) catch |e| {
log.err("Unexpected error processing request: {any}", .{e});
if (@errorReturnTrace()) |trace| {
std.debug.dumpStackTrace(trace.*);
}
};
if (builtin.is_test) bytes_allocated = arena.queryCapacity() - bytes_allocated;
if (supports_getrusage and builtin.mode == .Debug) { // and debug mode) {
const rusage = std.os.getrusage(std.os.rusage.SELF);
const rusage = std.posix.getrusage(std.posix.rusage.SELF);
log.debug(
"Request complete, max RSS of process: {d}M. Incremental: {d}K, User: {d}μs, System: {d}μs",
.{
@ -121,10 +122,11 @@ fn runStandaloneServer(allocator: ?std.mem.Allocator, event_handler: interface.H
);
}
}
return 0;
return;
}
fn processRequest(aa: std.mem.Allocator, server: *std.net.Server, event_handler: interface.HandlerFn) !void {
// This function is under test, but not the standalone server itself
var connection = try server.accept();
defer connection.stream.close();
@ -189,43 +191,48 @@ test {
// TODO: Do we want build files here too?
}
fn testRequest(request_bytes: []const u8, event_handler: interface.HandlerFn) !void {
const allocator = std.testing.allocator;
var arena = std.heap.ArenaAllocator.init(allocator);
defer arena.deinit();
var server_ready = false;
var remaining_requests: ?usize = null;
var server_url: ["http://127.0.0.1:99999".len]u8 = undefined;
var bytes_allocated: usize = 0;
const address = try std.net.Address.parseIp("127.0.0.1", 0);
var http_server = try address.listen(.{ .reuse_address = true });
const server_port = http_server.listen_address.in.getPort();
var al = std.ArrayList(u8).init(allocator);
defer al.deinit();
const writer = al.writer();
_ = writer;
const aa = arena.allocator();
const bytes_allocated: usize = 0;
// pre-warm
fn testRequest(method: std.http.Method, target: []const u8, event_handler: interface.HandlerFn) !void {
remaining_requests = 1;
defer remaining_requests = null;
const server_thread = try std.Thread.spawn(
.{},
processRequest,
.{ aa, &http_server, event_handler },
runStandaloneServer,
.{ null, event_handler, 0 },
);
var client = std.http.Client{ .allocator = std.testing.allocator };
defer client.deinit();
defer server_ready = false;
while (!server_ready) std.time.sleep(1);
const stream = try std.net.tcpConnectToHost(allocator, "127.0.0.1", server_port);
defer stream.close();
_ = try stream.writeAll(request_bytes[0..]);
const url = try std.mem.concat(std.testing.allocator, u8, &[_][]const u8{ server_url[0..], target });
defer std.testing.allocator.free(url);
log.debug("fetch from url: {s}", .{url});
var response_data = std.ArrayList(u8).init(std.testing.allocator);
defer response_data.deinit();
const resp = try client.fetch(.{
.response_storage = .{ .dynamic = &response_data },
.method = method,
.location = .{ .url = url },
});
server_thread.join();
log.debug("Bytes allocated during request: {d}", .{arena.queryCapacity() - bytes_allocated});
log.debug("Stdout: {s}", .{al.items});
log.debug("Bytes allocated during request: {d}", .{bytes_allocated});
log.debug("Response status: {}", .{resp.status});
log.debug("Response: {s}", .{response_data.items});
}
fn testGet(comptime path: []const u8, event_handler: interface.HandlerFn) !void {
try testRequest("GET " ++ path ++ " HTTP/1.1\r\n" ++
"Accept: */*\r\n" ++
"\r\n", event_handler);
try testRequest(.GET, path, event_handler);
}
test "can make a request" {
// std.testing.log_level = .debug;
if (@import("builtin").os.tag == .wasi) return error.SkipZigTest;
const HandlerClosure = struct {
var data_received: []const u8 = undefined;