forked from lobo/lambda-zig
upgrade to "almost 0.11" (no testing)
This commit is contained in:
parent
202cf9c27e
commit
3f33693d7a
88
build.zig
88
build.zig
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@ -1,34 +1,24 @@
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const builtin = @import("builtin");
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const std = @import("std");
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const GitRepoStep = @import("GitRepoStep.zig");
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const CopyStep = @import("CopyStep.zig");
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pub fn build(b: *std.build.Builder) !void {
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const zfetch_repo = GitRepoStep.create(b, .{
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.url = "https://github.com/truemedian/zfetch",
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// .branch = "0.1.10", // branch also takes tags. Tag 0.1.10 isn't quite new enough
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.sha = "271cab5da4d12c8f08e67aa0cd5268da100e52f1",
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});
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const copy_deps = CopyStep.create(
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b,
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"zfetch_deps.zig",
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"libs/zfetch/deps.zig",
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);
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copy_deps.step.dependOn(&zfetch_repo.step);
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// Standard release options allow the person running `zig build` to select
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// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
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// const mode = b.standardReleaseOptions();
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const target = b.standardTargetOptions(.{});
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const optimize = b.standardOptimizeOption(.{});
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const exe = b.addExecutable("bootstrap", "src/main.zig");
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const exe = b.addExecutable(.{
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.name = "bootstrap",
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.root_source_file = .{ .path = "src/main.zig" },
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.target = target,
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.optimize = optimize,
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});
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exe.step.dependOn(©_deps.step);
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exe.addPackage(getZfetchPackage(b, "libs/zfetch") catch unreachable);
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exe.setBuildMode(.ReleaseSafe);
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// exe.setBuildMode(.ReleaseSafe); // TODO: ReleaseSmall is stripped. Maybe best to just leave this to user
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const debug = b.option(bool, "debug", "Debug mode (do not strip executable)") orelse false;
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exe.strip = !debug;
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exe.install();
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b.installArtifact(exe);
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// TODO: We can cross-compile of course, but stripping and zip commands
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// may vary
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@ -36,16 +26,10 @@ pub fn build(b: *std.build.Builder) !void {
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// Package step
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const package_step = b.step("package", "Package the function");
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package_step.dependOn(b.getInstallStep());
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// strip may not be installed or work for the target arch
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// TODO: make this much less fragile
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const strip = if (debug)
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try std.fmt.allocPrint(b.allocator, "true", .{})
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else
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try std.fmt.allocPrint(b.allocator, "[ -x /usr/aarch64-linux-gnu/bin/strip ] && /usr/aarch64-linux-gnu/bin/strip {s}", .{b.getInstallPath(exe.install_step.?.dest_dir, exe.install_step.?.artifact.out_filename)});
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defer b.allocator.free(strip);
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package_step.dependOn(&b.addSystemCommand(&.{ "/bin/sh", "-c", strip }).step);
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const function_zip = b.getInstallPath(exe.install_step.?.dest_dir, "function.zip");
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const zip = try std.fmt.allocPrint(b.allocator, "zip -qj9 {s} {s}", .{ function_zip, b.getInstallPath(exe.install_step.?.dest_dir, exe.install_step.?.artifact.out_filename) });
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// const function_zip = b.getInstallPath(exe.installed_path.?, "function.zip");
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const function_zip = b.getInstallPath(.bin, "function.zip");
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// TODO: https://github.com/hdorio/hwzip.zig/blob/master/src/hwzip.zig
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const zip = try std.fmt.allocPrint(b.allocator, "zip -qj9 {s} {s}", .{ function_zip, b.getInstallPath(.bin, exe.out_filename) });
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defer b.allocator.free(zip);
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package_step.dependOn(&b.addSystemCommand(&.{ "/bin/sh", "-c", zip }).step);
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@ -68,7 +52,7 @@ pub fn build(b: *std.build.Builder) !void {
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// need to do anything with the iam role. Otherwise, we'll create/
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// get the IAM role and stick the name in a file in our destination
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// directory to be used later
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const iam_role_name_file = b.getInstallPath(exe.install_step.?.dest_dir, "iam_role_name");
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const iam_role_name_file = b.getInstallPath(.bin, "iam_role_name");
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iam_role = try std.fmt.allocPrint(b.allocator, "--role $(cat {s})", .{iam_role_name_file});
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// defer b.allocator.free(iam_role);
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if (!fileExists(iam_role_name_file)) {
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@ -96,7 +80,7 @@ pub fn build(b: *std.build.Builder) !void {
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}
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}
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const function_name = b.option([]const u8, "function-name", "Function name for Lambda [zig-fn]") orelse "zig-fn";
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const function_name_file = b.getInstallPath(exe.install_step.?.dest_dir, function_name);
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const function_name_file = b.getInstallPath(.bin, function_name);
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const ifstatement = "if [ ! -f {s} ] || [ {s} -nt {s} ]; then if aws lambda get-function --function-name {s} 2>&1 |grep -q ResourceNotFoundException; then echo not found > /dev/null; {s}; else echo found > /dev/null; {s}; fi; fi";
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// The architectures option was introduced in 2.2.43 released 2021-10-01
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// We want to use arm64 here because it is both faster and cheaper for most
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@ -118,7 +102,7 @@ pub fn build(b: *std.build.Builder) !void {
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}
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const cmd = try std.fmt.allocPrint(b.allocator, ifstatement, .{
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function_name_file,
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std.fs.path.dirname(exe.root_src.?.path),
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std.fs.path.dirname(exe.root_src.?.path).?,
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function_name_file,
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function_name,
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not_found_fmt,
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@ -162,6 +146,8 @@ pub fn build(b: *std.build.Builder) !void {
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const run_step = b.step("run", "Run the app");
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run_step.dependOn(&run_cmd.step);
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// TODO: Add test
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}
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}
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fn fileExists(file_name: []const u8) bool {
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@ -176,39 +162,3 @@ fn addArgs(allocator: std.mem.Allocator, original: []const u8, args: [][]const u
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}
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return rc;
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}
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fn getDependency(comptime lib_prefix: []const u8, comptime name: []const u8, comptime root: []const u8) !std.build.Pkg {
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const path = lib_prefix ++ "/libs/" ++ name ++ "/" ++ root;
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// We don't actually care if the dependency has been checked out, as
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// GitRepoStep will handle that for us
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// Make sure that the dependency has been checked out.
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// std.fs.cwd().access(path, .{}) catch |err| switch (err) {
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// error.FileNotFound => {
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// std.log.err("zfetch: dependency '{s}' not checked out", .{name});
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//
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// return err;
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// },
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// else => return err,
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// };
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return std.build.Pkg{
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.name = name,
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.path = .{ .path = path },
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};
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}
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pub fn getZfetchPackage(b: *std.build.Builder, comptime lib_prefix: []const u8) !std.build.Pkg {
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var dependencies = b.allocator.alloc(std.build.Pkg, 4) catch unreachable;
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dependencies[0] = try getDependency(lib_prefix, "iguanaTLS", "src/main.zig");
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dependencies[1] = try getDependency(lib_prefix, "network", "network.zig");
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dependencies[2] = try getDependency(lib_prefix, "uri", "uri.zig");
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dependencies[3] = try getDependency(lib_prefix, "hzzp", "src/main.zig");
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return std.build.Pkg{
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.name = "zfetch",
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.path = .{ .path = lib_prefix ++ "/src/main.zig" },
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.dependencies = dependencies,
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};
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}
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@ -1,10 +1,12 @@
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const std = @import("std");
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const zfetch = @import("zfetch");
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pub fn run(event_handler: fn (std.mem.Allocator, []const u8) anyerror![]const u8) !void { // TODO: remove inferred error set?
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const HandlerFn = *const fn (std.mem.Allocator, []const u8) anyerror![]const u8;
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pub fn run(event_handler: HandlerFn) !void { // TODO: remove inferred error set?
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const prefix = "http://";
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const postfix = "/2018-06-01/runtime/invocation";
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const lambda_runtime_uri = std.os.getenv("AWS_LAMBDA_RUNTIME_API");
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const lambda_runtime_uri = std.os.getenv("AWS_LAMBDA_RUNTIME_API").?;
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// TODO: If this is null, go into single use command line mode
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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@ -12,30 +14,45 @@ pub fn run(event_handler: fn (std.mem.Allocator, []const u8) anyerror![]const u8
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const url = try std.fmt.allocPrint(allocator, "{s}{s}{s}/next", .{ prefix, lambda_runtime_uri, postfix });
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defer allocator.free(url);
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const uri = try std.Uri.parse(url);
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try zfetch.init();
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defer zfetch.deinit();
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var client: std.http.Client = .{ .allocator = allocator };
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defer client.deinit();
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var empty_headers = std.http.Headers.init(allocator);
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defer empty_headers.deinit();
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std.log.info("Bootstrap initializing with event url: {s}", .{url});
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var headers = zfetch.Headers.init(allocator);
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defer headers.deinit();
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while (true) {
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var req_alloc = std.heap.ArenaAllocator.init(allocator);
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defer req_alloc.deinit();
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const req_allocator = req_alloc.allocator();
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var req = try zfetch.Request.init(req_allocator, url, null);
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var req = try client.request(.GET, uri, empty_headers, .{});
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defer req.deinit();
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req.start() catch |err| { // Well, at this point all we can do is shout at the void
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std.log.err("Get fail (start): {}", .{err});
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std.os.exit(0);
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continue;
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};
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// Lambda freezes the process at this line of code. During warm start,
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// the process will unfreeze and data will be sent in response to client.get
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req.do(.GET, headers, null) catch |err| {
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std.log.err("Get fail: {}", .{err});
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req.wait() catch |err| { // Well, at this point all we can do is shout at the void
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std.log.err("Get fail (wait): {}", .{err});
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std.os.exit(0);
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continue;
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};
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if (req.response.status != .ok) {
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// Documentation says something about "exit immediately". The
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// Lambda infrastrucutre restarts, so it's unclear if that's necessary.
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// It seems as though a continue should be fine, and slightly faster
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// std.os.exit(1);
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std.log.err("Get fail: {} {s}", .{
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@intFromEnum(req.response.status),
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req.response.status.phrase() orelse "",
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});
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continue;
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};
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}
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var request_id: ?[]const u8 = null;
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var content_length: ?usize = null;
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}
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const event_response = event_handler(req_allocator, resp_payload.items) catch |err| {
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// Stack trace will return null if stripped
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const return_trace = @errorReturnTrace();
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std.log.err("Caught error: {}. Return Trace: {}", .{ err, return_trace });
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const return_trace = @errorReturnTrace() orelse "no return trace available";
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std.log.err("Caught error: {}. Return Trace: {s}", .{ err, return_trace });
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const err_url = try std.fmt.allocPrint(req_allocator, "{s}{s}/runtime/invocation/{s}/error", .{ prefix, lambda_runtime_uri, req_id });
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defer req_allocator.free(err_url);
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const err_uri = try std.Uri.parse(err_url);
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const content =
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\\ {s}
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\\ "errorMessage": "{s}",
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\\ "errorType": "HandlerReturnedError",
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\\ "stackTrace": [ "{}" ]
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\\ "stackTrace": [ "{s}" ]
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\\ {s}
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;
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const content_fmt = try std.fmt.allocPrint(req_allocator, content, .{ "{", @errorName(err), return_trace, "}" });
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defer req_allocator.free(content_fmt);
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std.log.err("Posting to {s}: Data {s}", .{ err_url, content_fmt });
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var err_req = try zfetch.Request.init(req_allocator, err_url, null);
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defer err_req.deinit();
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var err_headers = zfetch.Headers.init(req_allocator);
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var err_headers = std.http.Headers.init(req_allocator);
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defer err_headers.deinit();
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err_headers.append(.{
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.name = "Lambda-Runtime-Function-Error-Type",
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.value = "HandlerReturned",
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}) catch |append_err| {
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err_headers.append(
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"Lambda-Runtime-Function-Error-Type",
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"HandlerReturned",
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) catch |append_err| {
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std.log.err("Error appending error header to post response for request id {s}: {}", .{ req_id, append_err });
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std.os.exit(0);
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continue;
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};
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// TODO: Determine why this post is not returning
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err_req.do(.POST, err_headers, content_fmt) catch |post_err| { // Well, at this point all we can do is shout at the void
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var err_req = try client.request(.POST, err_uri, empty_headers, .{});
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defer err_req.deinit();
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err_req.start() catch |post_err| { // Well, at this point all we can do is shout at the void
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std.log.err("Error posting response for request id {s}: {}", .{ req_id, post_err });
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std.os.exit(0);
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continue;
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};
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err_req.wait() catch |post_err| { // Well, at this point all we can do is shout at the void
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std.log.err("Error posting response for request id {s}: {}", .{ req_id, post_err });
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std.os.exit(0);
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continue;
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};
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// TODO: Determine why this post is not returning
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if (err_req.response.status != .ok) {
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// Documentation says something about "exit immediately". The
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// Lambda infrastrucutre restarts, so it's unclear if that's necessary.
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// It seems as though a continue should be fine, and slightly faster
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// std.os.exit(1);
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std.log.err("Get fail: {} {s}", .{
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@intFromEnum(err_req.response.status),
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err_req.response.status.phrase() orelse "",
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});
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continue;
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}
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std.log.err("Post complete", .{});
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continue;
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};
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// We should catch these potential alloc errors too
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// TODO: We should catch these potential alloc errors too
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// TODO: This whole loop should be in another function so we can catch everything at once
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const response_url = try std.fmt.allocPrint(req_allocator, "{s}{s}{s}/{s}/response", .{ prefix, lambda_runtime_uri, postfix, req_id });
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defer allocator.free(response_url);
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const response_uri = try std.Uri.parse(response_url);
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const response_content = try std.fmt.allocPrint(req_allocator, "{s} \"content\": \"{s}\" {s}", .{ "{", event_response, "}" });
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var resp_req = try zfetch.Request.init(req_allocator, response_url, null);
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var resp_req = try client.request(.POST, response_uri, empty_headers, .{});
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defer resp_req.deinit();
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resp_req.do(.POST, headers, response_content) catch |err| {
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try resp_req.start();
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try resp_req.writeAll(response_content); // TODO: AllocPrint + writeAll makes no sense
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resp_req.wait() catch |err| {
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// TODO: report error
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std.log.err("Error posting response for request id {s}: {}", .{ req_id, err });
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continue;
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