How to auto restart a crashed app?

Question

I'm trying to implement Angular Interceptor for Exceptions. For one at least. I have a token and when it old enogh backend throws TokenAlmostExpired exception. This exception contains errorCode = 101. In the interceptor I'm checking that code is 101 and then I need to send POST request to backend's /refresh endpoint so I could refresh token.

.factory('errorInjector',['$injector', function ($q, $injector) {

    var vm = this;

    var errorInjector = {
        'response': function (response) {
            console.log(response);
            return response;
        },
        'responseError': function (rejection) {
            if (JSON.stringify(rejection.data.errorCode) === JSON.stringify(101)) {
                vm.getRefreshToken();
            }
            return $q.reject(rejection);
        }
    };
    return errorInjector;
}]);

and

.config(['$httpProvider', function ($httpProvider) {
        $httpProvider.interceptors.push('errorInjector');
    }]);

$http

But there's a problem at interceptor level, that I can't just give it dependency on $http, because there's Circular dependency found: $http <- errorInjector <- $http <- $templateFactory <- $view <- $state

$scope

And I can't put getRefreshToken() function to $scope, because $scope dependency also gives 'Circular dependency'.

$Injector

var http = $injector.get('$http');

doesn't work as well, and gives me erorr.

So how can I catch exception in interceptor and then do a $http request from there?

Solution

Open your terminal and type as

gedit autostart.sh

then paste this code as it as

#!/bin/bash

while true
do
if [ ! `pgrep docky` ] ; then
/usr/bin/autorestart1.sh
fi
sleep 30
done

save it & close.

Then again in the terminal type as

sudo gedit /usr/bin/autostart1.sh

and paste

cd /usr/bin/
docky

save & close.

thats it now onwards. your application will be autostart after the crash,:)

Credit goes to Ubuntuforums

Comments

[Callum Linington]

You may want to consider firing off an event, and picking it up in a service and doing the execution from there

[Callum Linington]

Don't use rootscope, create your own event aggregator...

[el vis]

Can you show full errorInjector code? It seems that it is not full implementation.

[Callum Linington]

We don't need full errorInjector code, there is enough there

[el vis]

I do not think so. It has $injector injected that should be used to avoid circural dependency .

[Callum Linington]

Using $injector is a code smell to me

[Callum Linington]

Here is an event aggregator pattern implementation if you want a full on example with your code just ask

[ottercoder]

@CallumLinington I've never done anything with event, so I'd really like to get some help on that, thanks. As long as I understand it supposed to be easy .broadcast("something), .subscribe('something), right?

[Callum Linington]

Yeah, if you look at my plnker it should be fairly obvious to what is going on

[ottercoder]

@CallumLinington, not really there's a lot of letters that I don't get. What is "t" and "ev", for instance?

[el vis]

@ottercoder if you do not understand @CallumLinington code it seems that you do not understant DI in angular, thats why you have '$injector', function ($q, $injector) which should be '$q', '$injector', function ($q, $injector) and thats probably your problem here

[Callum Linington]

Yeah, would agree with @pawlakppp on this

[ottercoder]

If I'd understand Angular completely, I would'nt need a help at all. But I've found a solution. I'm putting function from service to $rootScope and calling it as a promise. $q.get('$rootScope').vmRT.getRefreshToken();

[Blaine]

how can I implement this to function the same way if a user quits the application? And is "autostart1.sh" supposed to be named "autorestart1.sh" as per previous file?

[ottercoder]

Circular dependency found: $http <- errorLauncher <- httpInterseptor <- $http <- $templateFactory <- $view <- $state :/

[Alexandr Fedoseev]

try the $emit from error handler then ) hope it will help