[Reports] Add new OutputTextArea chart plugin

New chart plugin can show arbitrary textual data on
"Scenario Stata -> Per iteration" tab.

This finally allows to show non-numeric data like IP addresses,
notes and even long comments.

Plugin Dummy.output is also updated to provide demonstration.

Change-Id: Id8d245788f230842bfdb596706a07a8789ace0db

rally/plugins/common/scenarios/dummy/dummy.py

@@ -166,6 +166,13 @@ class DummyOutput(scenario.Scenario):
                                   "label": "Yet another measurement units",
                                   "axis_label": ("This is a custom "
                                                  "X-axis label")})
+        self.add_output(
+            complete={"title": "Arbitrary Text",
+                      "chart_plugin": "TextArea",
+                      "data": ["Lorem ipsum dolor sit amet, consectetur "
+                               "adipiscing elit, sed do eiusmod tempor "
+                               "incididunt ut labore et dolore magna "
+                               "aliqua." * 2] * 4})
         self.add_output(
             complete={"title": "Complete Pie (no description)",
                       "chart_plugin": "Pie",

rally/task/processing/charts.py

@@ -573,6 +573,13 @@ class OutputStatsTable(OutputTable):
                 self._data[name][idx][0].add(value)
 
 
+@plugin.configure(name="TextArea")
+class OutputTextArea(OutputChart):
+    """Arbitrary text."""
+
+    widget = "TextArea"
+
+
 _OUTPUT_SCHEMA = {
     "key_types": {
         "title": six.string_types,

rally/ui/templates/task/directive_widget.js

@@ -138,6 +138,9 @@ var widgetDirective = function($compile) {
             "<tr>" +
             "</tbody></table>";
           var el = element.empty().append($compile(template)(scope)).children()[0]
+        } else if (attrs.widget === "TextArea") {
+          var template = "<div style='padding:0 0 5px' ng-repeat='str in data track by $index'>{{str}}</div><div style='height:10px'></div>";
+          var el = element.empty().append($compile(template)(scope)).children()[0]
         } else {
 
           var el_chart = element.addClass("chart").css({display:"block"});

tests/unit/plugins/common/scenarios/dummy/test_dummy.py

@@ -139,6 +139,12 @@ class DummyTestCase(test.TestCase):
                      "description": desc % "Complete StackedArea",
                      "label": "Yet another measurement units",
                      "title": "Complete StackedArea"},
+                    {"title": "Arbitrary Text",
+                     "chart_plugin": "TextArea",
+                     "data": ["Lorem ipsum dolor sit amet, consectetur "
+                              "adipiscing elit, sed do eiusmod tempor "
+                              "incididunt ut labore et dolore magna "
+                              "aliqua." * 2] * 4},
                     {"chart_plugin": "Pie",
                      "data": [[s, exp] for s in ("delta", "epsilon", "zeta",
                                                  "theta", "lambda", "omega")],

tests/unit/task/processing/test_charts.py

@@ -644,6 +644,13 @@ class OutputStatsTableTestCase(test.TestCase):
                          table.render())
 
 
+class OutputTextAreaTestCase(test.TestCase):
+
+    def test_class(self):
+        self.assertTrue(issubclass(charts.OutputTextArea, charts.OutputChart))
+        self.assertEqual("TextArea", charts.OutputTextArea.widget)
+
+
 @ddt.ddt
 class ModuleTestCase(test.TestCase):