example nodejs project

examples/nodeproj/lib/commands/task.js

@@ -0,0 +1,31 @@
+"use strict";
+import {proj} from "../proj";
+
+async function loop() {
+    const poped = await proj.predis.blpop("queue", 5);
+    const task_desc_s = poped[1];
+    let task_desc;
+    try {
+        task_desc = JSON.parse(task_desc_s);
+    } catch (e) {
+        proj.logger.exception(e);
+    }
+    proj.logger.info("got task "+task_desc.func);
+    const func = task_desc.func;
+    const args = task_desc.args;
+    if (typeof(proj.tasks[func])!="function") {
+        console.log(`task ${func} not found`);
+        process.exit(-1)
+    }
+    try {
+        await ((this.tasks[func])(...args));
+    } catch (e) {
+        console.exception(e);
+    }
+}
+
+export async function start() {
+    while(true) {
+        loop();
+    }
+}