Start on adding usage charts

static/js/app.js

@@ -6522,6 +6522,129 @@ quayApp.directive('locationView', function () {
 });
 
 
+quayApp.directive('realtimeLineChart', function () {
+  var directiveDefinitionObject = {
+    priority: 0,
+    templateUrl: '/static/directives/realtime-line-chart.html',
+    replace: false,
+    transclude: false,
+    restrict: 'C',
+    scope: {
+      'data': '=data',
+      'labels': '=labels',
+      'counter': '=counter',
+      'labelTemplate': '@labelTemplate'
+    },
+    controller: function($scope, $element) {
+      var graph = null;
+      var hoverDetail = null;
+      var series = [];
+      var counter = 0;
+      var palette = new Rickshaw.Color.Palette( { scheme: 'spectrum14' } );
+
+      var setupGraph = function() {
+        graph = new Rickshaw.Graph({
+          element: $element.find('.chart')[0],
+          renderer: 'line',
+          series: series,
+          min: 'auto',
+          padding: {
+            'top': 0.1,
+            'left': 0.01,
+            'right': 0.01,
+            'bottom': 0.1
+          }
+        });
+
+        hoverDetail = new Rickshaw.Graph.HoverDetail({
+          graph: graph,
+          xFormatter: function(x) {
+            return x.toString();
+          }
+        });
+      };
+
+      var refresh = function(data) {
+        if (!data) { return; }
+        if (!graph) {
+          setupGraph();
+        }
+
+        if (typeof data == 'number') {
+          data = [data];
+        }
+
+        if ($scope.labels) {
+          data = data.slice(0, $scope.labels.length);
+        }
+
+        if (series.length == 0){
+          for (var i = 0; i < data.length; ++i) {
+            var title = $scope.labels ? $scope.labels[i] : $scope.labelTemplate.replace('{x}', i + 1);
+            series.push({
+              'color': palette.color(),
+              'data': [],
+              'name': title
+            })
+          }
+        }
+
+        counter++;
+
+        for (var i = 0; i < data.length; ++i) {
+          var arr = series[i].data;
+          arr.push({
+            'x': counter,
+            'y': data[i]
+          })
+
+          if (arr.length > 10) {
+            series[i].data = arr.slice(arr.length - 10, arr.length);
+          }
+        }
+
+        graph.render();
+      };
+
+      $scope.$watch('counter', function(counter) {
+        refresh($scope.data_raw);
+      });
+
+      $scope.$watch('data', function(data) {
+        $scope.data_raw = data;
+      });
+    }
+  };
+  return directiveDefinitionObject;
+});
+
+
+quayApp.directive('psUsageGraph', function () {
+  var directiveDefinitionObject = {
+    priority: 0,
+    templateUrl: '/static/directives/ps-usage-graph.html',
+    replace: false,
+    transclude: false,
+    restrict: 'C',
+    scope: {
+    },
+    controller: function($scope, $element) {
+      $scope.counter = -1;
+      $scope.data = null;
+
+      var source = new EventSource('/realtime/ps');
+      source.onmessage = function(e) {
+        $scope.$apply(function() {
+          $scope.counter++;
+          $scope.data = JSON.parse(e.data);
+        });
+      };
+    }
+  };
+  return directiveDefinitionObject;
+});
+
+
 quayApp.directive('avatar', function () {
   var directiveDefinitionObject = {
     priority: 0,