File size: 3,257 Bytes
96e86e5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | import { spawn } from "node:child_process";
import { createRequire } from "node:module";
import { existsSync } from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
import { resolveServerDevWatchIgnorePaths } from "../src/dev-watch-ignore.ts";
import { terminateLocalService } from "../src/services/local-service-supervisor.ts";
const require = createRequire(import.meta.url);
function resolveTsxCliPath(): string {
try {
return require.resolve("tsx/cli");
} catch {
return require.resolve("tsx/dist/cli.mjs");
}
}
const tsxCliPath = resolveTsxCliPath();
const serverRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
const ignoreArgs = resolveServerDevWatchIgnorePaths(serverRoot).flatMap((ignorePath) => ["--exclude", ignorePath]);
const stopFilePath = process.env.PAPERCLIP_DEV_STOP_FILE?.trim() ?? "";
const stopRequestPollIntervalMs = 1_000;
const child = spawn(
process.execPath,
[tsxCliPath, "watch", ...ignoreArgs, "src/index.ts"],
{
cwd: serverRoot,
env: process.env,
stdio: "inherit",
},
);
let shuttingDown = false;
let shutdownPromise: Promise<void> | null = null;
let stopRequestTimer: NodeJS.Timeout | null = null;
function exitForSignal(signal: NodeJS.Signals): void {
if (signal === "SIGINT") {
process.exit(130);
}
if (signal === "SIGTERM") {
process.exit(143);
}
process.exit(1);
}
async function waitForChildExit(): Promise<{ code: number; signal: NodeJS.Signals | null }> {
if (child.exitCode !== null || child.signalCode !== null) {
return { code: child.exitCode ?? 0, signal: child.signalCode };
}
return await new Promise((resolve) => {
child.once("exit", (code, signal) => {
resolve({ code: code ?? 0, signal });
});
});
}
async function stopChild(signal: NodeJS.Signals): Promise<void> {
if (!child.pid) {
try {
child.kill(signal);
} catch {
// Child may already be gone by the time we attempt shutdown.
}
return;
}
await terminateLocalService(
{ pid: child.pid, processGroupId: null },
{ signal, forceAfterMs: 5_000 },
);
}
async function shutdown(signal: NodeJS.Signals): Promise<void> {
if (shutdownPromise) {
await shutdownPromise;
return;
}
shuttingDown = true;
if (stopRequestTimer) {
clearInterval(stopRequestTimer);
stopRequestTimer = null;
}
shutdownPromise = (async () => {
const exitPromise = waitForChildExit();
await stopChild(signal);
const exit = await exitPromise;
if (exit.signal) {
exitForSignal(exit.signal);
return;
}
process.exit(exit.code ?? 0);
})();
await shutdownPromise;
}
if (stopFilePath) {
stopRequestTimer = setInterval(() => {
if (!shuttingDown && existsSync(stopFilePath)) {
void shutdown("SIGTERM");
}
}, stopRequestPollIntervalMs);
}
child.on("exit", (code, signal) => {
if (shuttingDown) {
return;
}
if (signal) {
process.kill(process.pid, signal);
return;
}
process.exit(code ?? 0);
});
child.on("error", (error) => {
console.error(error);
process.exit(1);
});
process.once("SIGINT", () => {
void shutdown("SIGINT");
});
process.once("SIGTERM", () => {
void shutdown("SIGTERM");
});
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