major refactoring

lib/tasks/task.js

@@ -1,8 +1,8 @@
 const Emitter = require('events');
 const debug = require('debug')('jambonz:feature-server');
 const assert = require('assert');
-const resourcesMixin = require('../utils/resources');
 const {TaskPreconditions} = require('../utils/constants');
+const hooks = require('../utils/notifiers');
 const specs = new Map();
 const _specData = require('./specs');
 for (const key in _specData) {specs.set(key, _specData[key]);}
@@ -15,12 +15,24 @@ class Task extends Emitter {
     this.data = data;
 
     this._killInProgress = false;
+    this._completionPromise = new Promise((resolve) => this._completionResolver = resolve);
   }
 
   get killed() {
     return this._killInProgress;
   }
 
+  get callSession() {
+    return this.cs;
+  }
+
+  async exec(cs) {
+    this.cs = cs;
+    const {actionHook, notifyHook} = hooks(this.logger, cs.callInfo);
+    this.actionHook = actionHook;
+    this.notifyHook = notifyHook;
+  }
+
   /**
    * called to kill (/stop) a running task
    * what to do is up to each type of task
@@ -31,6 +43,24 @@ class Task extends Emitter {
     // no-op
   }
 
+  notifyTaskDone() {
+    this._completionResolver();
+  }
+
+  awaitTaskDone() {
+    return this._completionPromise;
+  }
+
+  async performAction(method, auth, results) {
+    if (this.action) {
+      const tasks = await this.actionHook(this.action, method, auth, results);
+      if (tasks && Array.isArray(tasks)) {
+        this.logger.debug(`${this.name} replacing application with ${tasks.length} tasks`);
+        this.callSession.replaceApplication(tasks);
+      }
+    }
+  }
+
   static validate(name, data) {
     debug(`validating ${name} with data ${JSON.stringify(data)}`);
     // validate the instruction is supported
@@ -88,7 +118,5 @@ class Task extends Emitter {
   }
 }
 
-Object.assign(Task.prototype, resourcesMixin);
-
 module.exports = Task;