fix(mod/dashboard): grab the leader URL

query etcd to find the URL of the leader before making any http requests
that can't be redirected from a browser like PUT/POST and DELETE.

mod/dashboard/app/scripts/common/services/etcd.js

@@ -2,10 +2,11 @@
 
 angular.module('etcd', [])
 
-.factory('EtcdV2', ['$http', function($http) {
+.factory('EtcdV2', ['$http', '$q', function($http, $q) {
   var keyPrefix = '/v2/keys/'
   var statsPrefix = '/v2/stats/'
   var baseURL = '/v2/'
+  var leaderURL = ''
 
   delete $http.defaults.headers.common['X-Requested-With'];
 
@@ -45,19 +46,23 @@ angular.module('etcd', [])
     };
 
     self.set = function(keyValue) {
-      return $http({
-        url: self.path(),
-        data: $.param({value: keyValue}),
-        method: 'PUT',
-        headers: {'Content-Type': 'application/x-www-form-urlencoded'}
+      return getLeader().then(function(leader) {
+        return $http({
+          url: leader + self.path(),
+          data: $.param({value: keyValue}),
+          method: 'PUT',
+          headers: {'Content-Type': 'application/x-www-form-urlencoded'}
+        });
       });
     };
 
     self.deleteKey = function(keyValue) {
-      return $http({
-        url: self.path(),
-        method: 'DELETE',
-        headers: {'Content-Type': 'application/x-www-form-urlencoded'}
+      return getLeader().then(function(leader) {
+        return $http({
+          url: leader + self.path(),
+          method: 'DELETE',
+          headers: {'Content-Type': 'application/x-www-form-urlencoded'}
+        });
       });
     };
 
@@ -79,8 +84,18 @@ angular.module('etcd', [])
     return self
   }
 
+  function getLeader() {
+    return newStat('leader').get().then(function(response) {
+      return newKey('/_etcd/machines/' + response.data.leader).get().then(function(response) {
+        // TODO: do something better here p.s. I hate javascript
+        var data = JSON.parse('{"' + decodeURI(response.data.value.replace(/&/g, "\",\"").replace(/=/g,"\":\"")) + '"}');
+        return data.etcd;
+      });
+    });
+  }
+
   return {
     getStat: newStat,
-    getKey: newKey
+    getKey: newKey,
   }
 }]);

mod/dashboard/app/scripts/controllers/browser.js

@@ -94,23 +94,23 @@ angular.module('etcdBrowser', ['ngRoute', 'etcd', 'timeRelative'])
 
   $scope.saveData = function() {
     // TODO: fixup etcd to allow for empty values
-    $scope.key.set($scope.singleValue || ' ').success(function (data, status, headers, config) {
+    $scope.key.set($scope.singleValue || ' ').then(function(response) {
       $scope.save = 'etcd-save-hide';
       $scope.preview = 'etcd-preview-hide';
       $scope.back();
       $scope.writingNew = false;
-    }).error(function (data, status, headers, config) {
+    }, function (response) {
       $scope.showSaveError(data.message);
     });
   };
 
   $scope.deleteKey = function() {
-    $scope.key.deleteKey().success(function (data, status, headers, config) {
+    $scope.key.deleteKey().then(function(response) {
       //TODO: remove loader
       $scope.save = 'etcd-save-hide';
       $scope.preview = 'etcd-preview-hide';
       $scope.back();
-    }).error(function (data, status, headers, config) {
+    }, function (response) {
       //TODO: remove loader
       //show errors
       $scope.showBrowseError('Could not delete the key');