Initial commit of working RSS Aggregator build

node_modules/bullmq/dist/esm/classes/child-pool.js

@@ -0,0 +1,60 @@
+import * as path from 'path';
+import { Child } from './child';
+const CHILD_KILL_TIMEOUT = 30000;
+export class ChildPool {
+    constructor({ mainFile = path.join(process.cwd(), 'dist/cjs/classes/main.js'), useWorkerThreads, }) {
+        this.retained = {};
+        this.free = {};
+        this.opts = { mainFile, useWorkerThreads };
+    }
+    async retain(processFile) {
+        let child = this.getFree(processFile).pop();
+        if (child) {
+            this.retained[child.pid] = child;
+            return child;
+        }
+        child = new Child(this.opts.mainFile, processFile, {
+            useWorkerThreads: this.opts.useWorkerThreads,
+        });
+        child.on('exit', this.remove.bind(this, child));
+        try {
+            await child.init();
+            this.retained[child.pid] = child;
+            return child;
+        }
+        catch (err) {
+            console.error(err);
+            this.release(child);
+            throw err;
+        }
+    }
+    release(child) {
+        delete this.retained[child.pid];
+        this.getFree(child.processFile).push(child);
+    }
+    remove(child) {
+        delete this.retained[child.pid];
+        const free = this.getFree(child.processFile);
+        const childIndex = free.indexOf(child);
+        if (childIndex > -1) {
+            free.splice(childIndex, 1);
+        }
+    }
+    async kill(child, signal = 'SIGKILL') {
+        this.remove(child);
+        return child.kill(signal, CHILD_KILL_TIMEOUT);
+    }
+    async clean() {
+        const children = Object.values(this.retained).concat(this.getAllFree());
+        this.retained = {};
+        this.free = {};
+        await Promise.all(children.map(c => this.kill(c, 'SIGTERM')));
+    }
+    getFree(id) {
+        return (this.free[id] = this.free[id] || []);
+    }
+    getAllFree() {
+        return Object.values(this.free).reduce((first, second) => first.concat(second), []);
+    }
+}
+//# sourceMappingURL=child-pool.js.map