exceptionHandlerDecorator.js

(function () {
    //'use strict'; allow default mode here, to be able to capture more detail

    angular.module('PortalModule')
        .config(ExceptionHandlerDecorator);

    function ExceptionHandlerDecorator($provide) {
        $provide.decorator('$exceptionHandler', ['$delegate', '$injector', function ($delegate, $injector) {
            var apiUrl = '/api/logerror';
            return function (exception, cause) {
                // original implementation
                $delegate(exception, cause);

                // avoid sending a bunch of the same error
                var cache = {};
                var out = FormatMsg(exception);
                if (cache.hasOwnProperty(out) == false) {
                    try {
                        // service locator pattern...
                        var $http = $injector.get('$http');
                        $http.post(
                            apiUrl,
                            {
                                message: out
                            });
                    } catch (e) {
                    }

                    cache[out] = true;
                }
            };
        }]);

        function FormatMsg(ex, stack) {
            if (ex == null) return '';
            var url = ex.fileName != null ? ex.fileName : document.location;
            if (stack == null && ex.stack != null) stack = ex.stack;

            // format output
            var out = ex.message != null ? ex.name + ": " + ex.message : ex;
            out += ": at document path '" + url + "'.";
            if (stack != null) {
                try {
                    // not sure about the stack property, best be careful...
                    out += "\n  at " + stack;
                } catch (e) {
                }
            }

            return out;
        }
    }

    ExceptionHandlerDecorator.$inject = ['$provide'];
})();