重构任务并发执行逻辑

back/shared/pLimit.ts

@@ -0,0 +1,10 @@
+import pLimit from "p-limit";
+import os from 'os';
+
+const cronLimit = pLimit(os.cpus.length);
+
+export function runCronWithLimit<T>(fn: () => Promise<T>): Promise<T> {
+  return cronLimit(() => {
+    return fn();
+  });
+}

back/shared/runCron.ts

@@ -0,0 +1,37 @@
+import { spawn } from "child_process";
+import { runCronWithLimit } from "./pLimit";
+import Logger from '../loaders/logger';
+
+export function runCron(cmd: string): Promise<number> {
+  return runCronWithLimit(() => {
+    return new Promise(async (resolve: any) => {
+      Logger.silly('运行命令: ' + cmd);
+
+      const cp = spawn(cmd, { shell: '/bin/bash' });
+
+      cp.stderr.on('data', (data) => {
+        Logger.info(
+          '[执行任务失败] %s，时间：%s, 错误信息：%j',
+          cmd,
+          new Date().toLocaleString(),
+          data.toString(),
+        );
+      });
+      cp.on('error', (err) => {
+        Logger.error(
+          '[创建任务失败] %s，时间：%s, 错误信息：%j',
+          cmd,
+          new Date().toLocaleString(),
+          err,
+        );
+      });
+
+      cp.on('close', async (code) => {
+        Logger.info(
+          `[任务退出] ${cmd} 进程id: ${cp.pid} 退出，退出码 ${code}`,
+        );
+        resolve();
+      });
+    });
+  })
+}