Add ShardManager

src/sharding/ShardingManager.js

@@ -0,0 +1,34 @@
+const childProcess = require('child_process');
+const path = require('path');
+const EventEmitter = require('events').EventEmitter;
+
+class ShardingManager extends EventEmitter {
+  constructor(file, totalShards) {
+    super();
+    this.file = file;
+    if (!path.isAbsolute(file)) {
+      this.file = path.resolve(`${process.cwd()}${file}`);
+    }
+    this.totalShards = totalShards;
+    this.runningShards = 0;
+    this.createShards();
+  }
+
+  createShard(id) {
+    const shard = childProcess.fork(path.resolve(this.file), [id, this.totalShards]);
+    this.emit('launch', id, shard);
+  }
+
+  createShards() {
+    this.createShard(0);
+    const interval = setInterval(() => {
+      this.runningShards++;
+      if (this.runningShards === this.totalShards) {
+        return clearInterval(interval);
+      }
+      this.createShard(this.runningShards);
+    }, 5500);
+  }
+}
+
+module.exports = ShardingManager;