Revert "gcloud-wrapper: experiments for zig 0.15"

This reverts commit 11093140aa.
This commit is contained in:
2025-10-27 15:36:44 +00:00
parent 11093140aa
commit f8c0249942
5 changed files with 145 additions and 310 deletions

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@@ -1,39 +0,0 @@
const std = @import("std");
pub fn build(b: *std.Build) void {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const exe = b.addExecutable(.{
.name = "gcloud-wrapper",
.root_module = b.createModule(.{
.root_source_file = b.path("main.zig"),
.target = target,
.optimize = optimize,
}),
});
b.installArtifact(exe);
const run_cmd = b.addRunArtifact(exe);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the app");
run_step.dependOn(&run_cmd.step);
const exe_unit_tests = b.addTest(.{
.root_module = b.createModule(.{
.root_source_file = b.path("main.zig"),
.target = target,
.optimize = optimize,
}),
});
const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
const test_step = b.step("test", "Run unit tests");
test_step.dependOn(&run_exe_unit_tests.step);
}

View File

@@ -1,9 +1,9 @@
{ pkgs }: { buildGoModule, pkgs }:
let let
gcloud-wrapper = pkgs.stdenv.mkDerivation { gcloud-wrapper = buildGoModule {
name = "gcloud-wrapper"; name = "gcloud-wrapper";
src = ./.; src = ./.;
nativeBuildInputs = [ pkgs.pkgs-unstable.zig_0_15.hook ]; vendorHash = null;
}; };
in in
pkgs.symlinkJoin { pkgs.symlinkJoin {

View File

@@ -0,0 +1,3 @@
module git.jakstys.lt/motiejus/config/pkgs/gcloud-wrapper
go 1.23

139
pkgs/gcloud-wrapped/main.go Normal file
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@@ -0,0 +1,139 @@
package main
import (
"encoding/json"
"fmt"
"os"
"os/exec"
"path/filepath"
"time"
)
const (
cachePath = ".config/gcloud/config-helper-cache.json"
cacheThreshold = 1 * time.Second
)
type credentialCache struct {
Credential struct {
TokenExpiry string `json:"token_expiry"`
} `json:"credential"`
}
func getCachePath() (string, error) {
home, err := os.UserHomeDir()
if err != nil {
return "", err
}
return filepath.Join(home, cachePath), nil
}
func argsMatch(args []string) bool {
return len(args) == 4 &&
args[0] == "config" &&
args[1] == "config-helper" &&
args[2] == "--format" &&
args[3] == "json"
}
func parseISO8601(s string) (time.Time, error) {
return time.Parse(time.RFC3339, s)
}
func execGcloud(args []string) {
argv := make([]string, len(args))
argv[0] = "gcloud-wrapped"
copy(argv[1:], args[1:])
cmd := exec.Command(argv[0], argv[1:]...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
if err := cmd.Run(); err != nil {
if exitErr, ok := err.(*exec.ExitError); ok {
os.Exit(exitErr.ExitCode())
}
os.Exit(1)
}
os.Exit(0)
}
func runGcloudAndCache(cachePath string) error {
cmd := exec.Command("gcloud-wrapped", "config", "config-helper", "--format", "json")
output, err := cmd.CombinedOutput()
if err != nil {
os.Remove(cachePath)
os.Stderr.Write(output)
if exitErr, ok := err.(*exec.ExitError); ok {
os.Exit(exitErr.ExitCode())
}
os.Exit(1)
}
if err := os.MkdirAll(filepath.Dir(cachePath), 0755); err != nil {
return err
}
if err := os.WriteFile(cachePath, output, 0600); err != nil {
return err
}
os.Stdout.Write(output)
return nil
}
func main() {
args := os.Args[1:]
if !argsMatch(args) {
execGcloud(os.Args)
}
cachePath, err := getCachePath()
if err != nil {
fmt.Fprintf(os.Stderr, "failed to get cache path: %v\n", err)
os.Exit(1)
}
cacheData, err := os.ReadFile(cachePath)
if err != nil {
if os.IsNotExist(err) {
if err := runGcloudAndCache(cachePath); err != nil {
fmt.Fprintf(os.Stderr, "failed to run gcloud: %v\n", err)
os.Exit(1)
}
return
}
fmt.Fprintf(os.Stderr, "failed to read cache: %v\n", err)
os.Exit(1)
}
var cache credentialCache
if err := json.Unmarshal(cacheData, &cache); err != nil {
if err := runGcloudAndCache(cachePath); err != nil {
fmt.Fprintf(os.Stderr, "failed to run gcloud: %v\n", err)
os.Exit(1)
}
return
}
expiry, err := parseISO8601(cache.Credential.TokenExpiry)
if err != nil {
if err := runGcloudAndCache(cachePath); err != nil {
fmt.Fprintf(os.Stderr, "failed to run gcloud: %v\n", err)
os.Exit(1)
}
return
}
if time.Until(expiry) > cacheThreshold {
os.Stdout.Write(cacheData)
} else {
if err := runGcloudAndCache(cachePath); err != nil {
fmt.Fprintf(os.Stderr, "failed to run gcloud: %v\n", err)
os.Exit(1)
}
}
}

View File

@@ -1,268 +0,0 @@
const std = @import("std");
const cache_path = ".config/gcloud/config-helper-cache.json";
const cache_threshold_ns: i128 = std.time.ns_per_s;
const CredentialCache = struct {
credential: struct {
token_expiry: []const u8,
},
};
fn getCachePath(allocator: std.mem.Allocator) ![]u8 {
const home = std.posix.getenv("HOME") orelse return error.NoHomeDir;
return std.fs.path.join(allocator, &.{ home, cache_path });
}
fn argsMatch(args: []const []const u8) bool {
if (args.len != 4) return false;
if (!std.mem.eql(u8, args[0], "config")) return false;
if (!std.mem.eql(u8, args[1], "config-helper")) return false;
if (!std.mem.eql(u8, args[2], "--format")) return false;
if (!std.mem.eql(u8, args[3], "json")) return false;
return true;
}
fn parseISO8601(s: []const u8) !i64 {
var year: u16 = 0;
var month: u8 = 0;
var day: u8 = 0;
var hour: u8 = 0;
var minute: u8 = 0;
var second: u8 = 0;
if (s.len < 19) return error.InvalidFormat;
year = try std.fmt.parseInt(u16, s[0..4], 10);
if (s[4] != '-') return error.InvalidFormat;
month = try std.fmt.parseInt(u8, s[5..7], 10);
if (s[7] != '-') return error.InvalidFormat;
day = try std.fmt.parseInt(u8, s[8..10], 10);
if (s[10] != 'T') return error.InvalidFormat;
hour = try std.fmt.parseInt(u8, s[11..13], 10);
if (s[13] != ':') return error.InvalidFormat;
minute = try std.fmt.parseInt(u8, s[14..16], 10);
if (s[16] != ':') return error.InvalidFormat;
second = try std.fmt.parseInt(u8, s[17..19], 10);
var days_since_epoch: i64 = 0;
var y: u16 = std.time.epoch.epoch_year;
while (y < year) : (y += 1) {
days_since_epoch += std.time.epoch.getDaysInYear(y);
}
const days_in_months = [12]u8{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
var m: u8 = 1;
while (m < month) : (m += 1) {
days_since_epoch += days_in_months[m - 1];
if (m == 2 and std.time.epoch.isLeapYear(year)) {
days_since_epoch += 1;
}
}
days_since_epoch += day - 1;
const seconds_since_epoch = days_since_epoch * std.time.epoch.secs_per_day +
@as(i64, hour) * 3600 +
@as(i64, minute) * 60 +
@as(i64, second);
return seconds_since_epoch;
}
fn execGcloud(allocator: std.mem.Allocator, args: []const []const u8, gcloud_path: []const u8) !noreturn {
const argv = try allocator.alloc([]const u8, args.len);
defer allocator.free(argv);
argv[0] = gcloud_path;
@memcpy(argv[1..], args[1..]);
const result = std.process.execv(allocator, argv);
std.debug.print("exec failed: {}\n", .{result});
std.process.exit(1);
}
fn runGcloudAndCache(allocator: std.mem.Allocator, cache_file_path: []const u8, gcloud_path: []const u8, stdout: std.fs.File) !void {
const argv = [_][]const u8{ gcloud_path, "config", "config-helper", "--format", "json" };
const result = try std.process.Child.run(.{
.allocator = allocator,
.argv = &argv,
});
defer allocator.free(result.stdout);
defer allocator.free(result.stderr);
if (result.term.Exited != 0) {
std.fs.deleteFileAbsolute(cache_file_path) catch {};
try std.fs.File.stderr().writeAll(result.stderr);
std.process.exit(result.term.Exited);
}
const dir_path = std.fs.path.dirname(cache_file_path) orelse return error.InvalidPath;
try std.fs.cwd().makePath(dir_path);
const file = try std.fs.createFileAbsolute(cache_file_path, .{ .mode = 0o600 });
defer file.close();
try file.writeAll(result.stdout);
try stdout.writeAll(result.stdout);
}
fn runMain(allocator: std.mem.Allocator, _: []const []const u8, gcloud_path: []const u8, cache_dir: []const u8, stdout: std.fs.File, now_ts: i64) !void {
const cache_file_path = try std.fs.path.join(allocator, &.{ cache_dir, "config-helper-cache.json" });
defer allocator.free(cache_file_path);
const cache_file = std.fs.openFileAbsolute(cache_file_path, .{}) catch |err| {
if (err == error.FileNotFound) {
try runGcloudAndCache(allocator, cache_file_path, gcloud_path, stdout);
return;
}
std.debug.print("failed to open cache: {}\n", .{err});
std.process.exit(1);
};
defer cache_file.close();
const cache_data = cache_file.readToEndAlloc(allocator, 1024 * 1024) catch |err| {
std.debug.print("failed to read cache file: {}\n", .{err});
std.process.exit(1);
};
defer allocator.free(cache_data);
const parsed = std.json.parseFromSlice(CredentialCache, allocator, cache_data, .{}) catch {
try runGcloudAndCache(allocator, cache_file_path, gcloud_path, stdout);
return;
};
defer parsed.deinit();
const expiry_ts = parseISO8601(parsed.value.credential.token_expiry) catch {
try runGcloudAndCache(allocator, cache_file_path, gcloud_path, stdout);
return;
};
const until_expiry_ns = (expiry_ts - now_ts) * std.time.ns_per_s;
if (until_expiry_ns > cache_threshold_ns) {
try stdout.writeAll(cache_data);
} else {
try runGcloudAndCache(allocator, cache_file_path, gcloud_path, stdout);
}
}
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
const args = try std.process.argsAlloc(allocator);
defer std.process.argsFree(allocator, args);
const user_args = args[1..];
if (!argsMatch(user_args)) {
try execGcloud(allocator, args, "gcloud-wrapped");
}
const cache_dir_path = blk: {
const home = std.posix.getenv("HOME") orelse return error.NoHomeDir;
break :blk try std.fs.path.join(allocator, &.{ home, ".config/gcloud" });
};
defer allocator.free(cache_dir_path);
const now_ts: i64 = @intCast(@divFloor(std.time.nanoTimestamp(), std.time.ns_per_s));
try runMain(allocator, user_args, "gcloud-wrapped", cache_dir_path, std.fs.File.stdout(), now_ts);
}
test "argsMatch with valid args" {
const args = [_][]const u8{ "config", "config-helper", "--format", "json" };
try std.testing.expect(argsMatch(&args));
}
test "argsMatch with invalid args - wrong length" {
const args = [_][]const u8{ "config", "config-helper" };
try std.testing.expect(!argsMatch(&args));
}
test "argsMatch with invalid args - wrong command" {
const args = [_][]const u8{ "compute", "config-helper", "--format", "json" };
try std.testing.expect(!argsMatch(&args));
}
test "parseISO8601 valid timestamp" {
const ts = try parseISO8601("2025-01-15T10:30:45Z");
try std.testing.expect(ts > 0);
}
test "parseISO8601 invalid format" {
const result = parseISO8601("invalid");
try std.testing.expectError(error.InvalidFormat, result);
}
test "integration: cache valid token" {
const allocator = std.testing.allocator;
var tmp_dir = std.testing.tmpDir(.{});
defer tmp_dir.cleanup();
const cache_dir_path = try tmp_dir.dir.realpathAlloc(allocator, ".");
defer allocator.free(cache_dir_path);
const gcloud_script_path = try std.fs.path.join(allocator, &.{ cache_dir_path, "mock-gcloud" });
defer allocator.free(gcloud_script_path);
const far_future = "2099-12-31T23:59:59Z";
const mock_response = try std.fmt.allocPrint(allocator,
\\{{"credential": {{"token_expiry": "{s}"}}}}
, .{far_future});
defer allocator.free(mock_response);
const script_content = try std.fmt.allocPrint(allocator,
\\#!/bin/sh
\\echo '{s}'
\\
, .{mock_response});
defer allocator.free(script_content);
{
const script_file = try tmp_dir.dir.createFile("mock-gcloud", .{ .mode = 0o755 });
defer script_file.close();
try script_file.writeAll(script_content);
}
const stdout_path = try std.fs.path.join(allocator, &.{ cache_dir_path, "stdout.txt" });
defer allocator.free(stdout_path);
const stdout_file = try tmp_dir.dir.createFile("stdout.txt", .{ .read = true });
defer stdout_file.close();
const user_args = [_][]const u8{ "config", "config-helper", "--format", "json" };
const now_ts = try parseISO8601("2025-01-01T00:00:00Z");
try runMain(allocator, &user_args, gcloud_script_path, cache_dir_path, stdout_file, now_ts);
const cache_file_path = try std.fs.path.join(allocator, &.{ cache_dir_path, "config-helper-cache.json" });
defer allocator.free(cache_file_path);
const cache_file_check = try std.fs.openFileAbsolute(cache_file_path, .{});
defer cache_file_check.close();
const cached_data = try cache_file_check.readToEndAlloc(allocator, 1024 * 1024);
defer allocator.free(cached_data);
try std.testing.expect(std.mem.indexOf(u8, cached_data, far_future) != null);
try stdout_file.seekTo(0);
const stdout_data = try stdout_file.readToEndAlloc(allocator, 1024);
defer allocator.free(stdout_data);
try std.testing.expect(std.mem.indexOf(u8, stdout_data, far_future) != null);
const second_stdout_file = try tmp_dir.dir.createFile("stdout2.txt", .{ .read = true });
defer second_stdout_file.close();
try runMain(allocator, &user_args, gcloud_script_path, cache_dir_path, second_stdout_file, now_ts);
try second_stdout_file.seekTo(0);
const second_stdout_data = try second_stdout_file.readToEndAlloc(allocator, 1024);
defer allocator.free(second_stdout_data);
try std.testing.expectEqualStrings(stdout_data, second_stdout_data);
}