this.unregister = function()

in thing/index.js [616:661]

• 24 lines of code
• 5 McCabe index (conditional complexity)

   this.unregister = function(thingName) {
      if (thingShadows.hasOwnProperty(thingName)) {
         var topicSpecs = [];

         //
         // If an operation is outstanding, it will have a timeout set; when it
         // expires any accept/reject sub-topic subscriptions for the thing will be 
         // deleted.  If any messages arrive after the thing has been deleted, they
         // will simply be ignored as it no longer exists in the thing registrations.
         // The only sub-topic we need to unsubscribe from is the delta sub-topic,
         // which is always active.
         //
         topicSpecs.push({
            operations: ['update'],
            statii: ['delta']
         });
         //
         // If we are persistently subscribing, we subscribe to everything we could ever
         // possibly be interested in; this means that when it's time to unregister
         // interest in a thing, we need to unsubscribe from all of these topics.
         //
         if (thingShadows[thingName].persistentSubscribe === true) {
            topicSpecs.push({
               operations: ['update', 'get', 'delete'],
               statii: ['accepted', 'rejected']
            });
         }

         this._handleSubscriptions(thingName, topicSpecs, 'unsubscribe');

         //
         // Delete any pending timeout
         //
         if (!isUndefined(thingShadows[thingName].timeout)) {
            clearTimeout(thingShadows[thingName].timeout);
         }
         //
         // Delete the thing from the Thing registrations.
         //
         delete thingShadows[thingName];
      } else {
         if (deviceOptions.debug === true) {
            console.error('attempting to unregister unknown thing: ', thingName);
         }
      }
   };