多worker共享事件（不稳定

hydro/service/bus.js

@@ -1,15 +1,52 @@
 const { EventEmitter } = require('events');
+const cluster = require('cluster');
 
 const bus = new EventEmitter();
 
-global.Hydro.service.bus = module.exports = {
-    subscribe(events, handler) {
+function subscribe(events, handler, funcName) {
+    if (!funcName) {
         for (const event of events) bus.on(event, handler);
-    },
-    unsubscribe(events, handler) {
+    } else {
+        handler.__bus = (...args) => {
+            handler[funcName].call(handler, ...args);
+        };
+        for (const event of events) bus.on(event, handler.__bus);
+    }
+}
+
+function unsubscribe(events, handler, funcName) {
+    if (!funcName) {
         for (const event of events) bus.off(event, handler);
-    },
-    publish(event, data) {
-        bus.emit(event, { value: data, event });
-    },
+    } else {
+        handler.__bus = (...args) => {
+            handler[funcName].call(handler, ...args);
+        };
+        for (const event of events) bus.off(event, handler.__bus);
+        delete handler.__bus;
+    }
+}
+
+function publish(event, data, isMaster = true) {
+    bus.emit(event, { value: data, event });
+    if (isMaster && global.Hydro.model.task) {
+        global.Hydro.model.task.add({
+            type: 'bus',
+            count: Object.keys(cluster.workers).length,
+            sender: cluster.worker.id,
+            event,
+            data,
+        });
+    }
+}
+
+function postInit() {
+    const { task } = global.Hydro.model;
+    task.consume({ type: 'bus' }, (data) => {
+        if (data.sender === cluster.worker.id) return;
+        publish(data.event, data.value, false);
+    });
+}
+
+global.Hydro.service.bus = module.exports = {
+    subscribe, unsubscribe, publish, postInit,
 };