mistral-dashboard Execution enhancements

* fixed main table:
  a. execution id now refers to overview screen
  b. task refer to corresponding task
* added execution overview screen
* removed duplicate string from prettyprint, shortage should be done on client side, (we don't use it atm)

* Screenshots:
http://i57.tinypic.com/2817r5c.png
http://i58.tinypic.com/23uydmo.png

Partially implements blueprint: mistral-dashboard-executions-screen

Change-Id: I4c580e21299aaccf4cf012c88d2d4c0d91de5710

mistraldashboard/default/templates/default/_prettyprint.html

@@ -1,9 +1,3 @@
-{% if short %}
 <div class="codeblock" tabindex="-1">
-    <pre lang="json" class="short">{{ short }}</pre>
     <pre lang="json" class="full">{{ full }}</pre>
-{% else %}
+</div>
-<div class="codeblock">
-    <pre lang="json" class="short">{{ full }}</pre>
-{% endif %}
-</div>

mistraldashboard/executions/tables.py

@@ -50,11 +50,18 @@ class ExecutionsTable(tables.DataTable):
     id = tables.Column(
         "id",
         verbose_name=_("ID"),
-        link="horizon:mistral:executions:tasks"
+        link="horizon:mistral:executions:detail"
     )
 
     workflow_name = tables.Column("workflow_name", verbose_name=_("Workflow"))
 
+    task = tables.Column(
+        "task",
+        verbose_name=_("Task"),
+        empty_value=_("View"),
+        link="horizon:mistral:executions:tasks"
+    )
+
     input = tables.Column(
         "input",
         verbose_name=_("Input"),

mistraldashboard/executions/templates/executions/detail.html

@@ -0,0 +1,38 @@
+{% extends 'base.html' %}
+{% load i18n %}
+{% block title %}{% trans "Execution Overview" %}{% endblock %}
+
+{% block page_header %}
+    <h1>
+        {% trans "Execution Overview: " %}
+        {{ execution.id|default:_("None") }}
+    </h1>
+{% endblock page_header %}
+
+{% block main %}
+    {% load i18n sizeformat %}
+    <div class="detail">
+        <h4>{% trans "Information" %}</h4>
+        <hr class="header_rule">
+        <dl class="dl-horizontal">
+            <dt>{% trans "ID" %}</dt>
+            <dd>{{ execution.id|default:_("None") }}</dd>
+            <dt>{% trans "State" %}</dt>
+            <dd>{{ execution.state }}</dd>
+            {% if execution.description %}
+                <dt>{% trans "Description" %}</dt>
+                <dd>{{ execution.description }}</dd>
+            {% endif %}
+            <dt>{% trans "Worflow Name" %}</dt>
+            <dd>{{ execution.workflow_name }}</dd>
+            <dt>{% trans "Updated At" %}</dt>
+            <dd>{{ execution.updated_at }}</dd>
+            <dt>{% trans "Params" %}</dt>
+            <dd>{{ execution.params }}</dd>
+            <dt>{% trans "Input" %}</dt>
+            <dd>{{ execution.input }}</dd>
+            <dt>{% trans "Output" %}</dt>
+            <dd>{{ execution.output }}</dd>
+        </dl>
+    </div>
+{% endblock %}

mistraldashboard/executions/urls.py

@@ -20,10 +20,13 @@ from django.conf.urls import url  # noqa
 from mistraldashboard.executions.views import IndexView
 from mistraldashboard.executions.views import TaskView
 
+from mistraldashboard.executions import views
+
 EXECUTIONS = r'^(?P<execution_id>[^/]+)/%s$'
 
 urlpatterns = patterns(
     '',
     url(r'^$', IndexView.as_view(), name='index'),
     url(EXECUTIONS % 'tasks', TaskView.as_view(), name='tasks'),
+    url(EXECUTIONS % 'detail', views.DetailView.as_view(), name='detail'),
 )

mistraldashboard/executions/views.py

@@ -14,9 +14,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from django.views import generic
+
+from django.core.urlresolvers import reverse
+from django.utils.translation import ugettext_lazy as _
+
+from horizon import exceptions
 from horizon import tables
 
 from mistraldashboard import api
+from mistraldashboard.default.utils import prettyprint
 from mistraldashboard.executions.tables import ExecutionsTable
 from mistraldashboard.executions.tables import TaskTable
 
@@ -35,3 +42,28 @@ class TaskView(tables.DataTableView):
 
     def get_data(self):
         return api.task_list(self.request, self.kwargs['execution_id'])
+
+
+class DetailView(generic.TemplateView):
+    template_name = 'mistral/executions/detail.html'
+    page_title = _("Execution Overview")
+
+    def get_context_data(self, **kwargs):
+        context = super(DetailView, self).get_context_data(**kwargs)
+        execution = self.get_data(self.request, **kwargs)
+        execution.input = prettyprint(execution.input)
+        execution.output = prettyprint(execution.output)
+        execution.params = prettyprint(execution.params)
+        context['execution'] = execution
+        return context
+
+    def get_data(self, request, **kwargs):
+        try:
+            execution_id = kwargs['execution_id']
+            execution = api.execution_get(request, execution_id)
+        except Exception:
+            msg = _('Unable to get execution "%s".') % execution_id
+            redirect = reverse('horizon:mistral:executions:index')
+            exceptions.handle(self.request, msg, redirect=redirect)
+
+        return execution