Add queueing to angulars $http service

Question

I have a very quirky api that can only handle a single request at a time. Therefore, I need to ensure that every time a request is made, it goes into a queue, and that queue

Answer 1

My two queues:

1. Sequential queue QueueHttp: executes requests one after the other

code:

app.factory('QueueHttp', ($http, $q) => {
    let promise = $q.resolve();

    return (conf) => {
        let next = () => {
            return $http(conf);
        };

        return promise = promise.then(next);
    };
});

usage:

return QueueHttp({
           url: url,
           method: 'GET'
       });

2. Delay queue DelayHttp: executes requests by a delay amount

code:

app.factory('DelayHttp', ($http, $timeout) => {
    let counter = 0,
        delay = 100;

    return (conf) => {
        counter += 1;

        return $timeout(() => {
            counter -= 1;
            return $http(conf);
        }, counter * delay);
    };
});

usage:

return DelayHttp({
           url: url,
           method: 'GET'
       });