Undeploy in progress page

-Separate undeploy in progress page, so we can deal
 with different behaviour when undeploying.

Fixes-bug: #1284059
Change-Id: I93cd5a533d198ce11f75eefaf9e91824f5cd19ba

7 files changed, 224 insertions, 42 deletions

diff --git a/tuskar_ui/api.py b/tuskar_ui/api.py
index 11dcfbb1..0cee6368 100644
--- a/tuskar_ui/api.py
+++ b/tuskar_ui/api.py
@@ -367,7 +367,7 @@ class Overcloud(base.APIResourceWrapper):
 
         the_overcloud = cls(object(), request=request)
         # I need to mock attributes of overcloud that is being deleted.
-        the_overcloud.id = "deleting_in_progress"
+        the_overcloud.id = "overcloud"
 
         if the_overcloud.stack and the_overcloud.is_deleting:
             return the_overcloud
@@ -395,12 +395,6 @@ class Overcloud(base.APIResourceWrapper):
                  found
         :rtype:  heatclient.v1.stacks.Stack or None
         """
-        # TODO(lsmola) load it properly, once the API has finished workflow
-        # and for example there can't be a situation when I delete Overcloud
-        # but Stack is still deleting. So the Overcloud will represent the
-        # state of all inner entities and operations correctly.
-        # Then also delete the try/except, it should not be caught on this
-        # level.
         return heat.stack_get(self._request, 'overcloud')
 
     @cached_property
@@ -446,7 +440,7 @@ class Overcloud(base.APIResourceWrapper):
         :rtype: bool
         """
         return self.stack.stack_status in ('CREATE_FAILED',
-                                           'UPDATE_FAILED')
+                                           'UPDATE_FAILED',)
 
     @cached_property
     def is_deleting(self):
@@ -457,6 +451,15 @@ class Overcloud(base.APIResourceWrapper):
         """
         return self.stack.stack_status in ('DELETE_IN_PROGRESS', )
 
+    @cached_property
+    def is_delete_failed(self):
+        """Check if this Overcloud deleting has failed.
+
+        :return: True if Overcloud deleting has failed, False otherwise.
+        :rtype: bool
+        """
+        return self.stack.stack_status in ('DELETE_FAILED', )
+
     @memoized.memoized
     def all_resources(self, with_joins=True):
         """Return a list of all Overcloud Resources
@@ -469,16 +472,9 @@ class Overcloud(base.APIResourceWrapper):
                  are none
         :rtype:  list of tuskar_ui.api.Resource
         """
-        # FIXME(lsmola) of this is a temporary hack. When I delete the stack
-        # there is a brief moment when list of resources throws an exception
-        # a second later, it does not. So the delete in progress page will
-        # need to be separated, because it is 'special'. Till then, this hack
-        # stays.
         try:
             resources = [r for r in heat.resources_list(self._request,
                                                         self.stack.stack_name)]
-        except heatclient.exc.HTTPNotFound:
-            resources = []
         except heatclient.exc.HTTPInternalServerError:
             # TODO(lsmola) There is a weird bug in heat, that after
             # stack-create it returns 500 for a little while. This can be
diff --git a/tuskar_ui/infrastructure/overcloud/tabs.py b/tuskar_ui/infrastructure/overcloud/tabs.py
index 7c77c2f7..aa3e8b99 100644
--- a/tuskar_ui/infrastructure/overcloud/tabs.py
+++ b/tuskar_ui/infrastructure/overcloud/tabs.py
@@ -13,6 +13,7 @@
 #    under the License.
 from django.utils.translation import ugettext_lazy as _
 
+import heatclient
 from horizon import tabs
 
 from tuskar_ui import api
@@ -100,6 +101,45 @@ class OverviewTab(tabs.Tab):
         }
 
 
+class UndeployInProgressTab(tabs.Tab):
+    name = _("Overview")
+    slug = "undeploy_in_progress_tab"
+    template_name = "infrastructure/overcloud/_undeploy_in_progress.html"
+    preload = False
+
+    def get_context_data(self, request, **kwargs):
+        overcloud = self.tab_group.kwargs['overcloud']
+
+        # TODO(lsmola) since at this point we don't have total number of nodes
+        # we will hack this around, till API can show this information. So it
+        # will actually show progress like the total number is 10, or it will
+        # show progress of 5%. Ugly, but workable.
+        total_num_nodes_count = 10
+
+        try:
+            all_resources_count = len(
+                overcloud.all_resources(with_joins=False))
+        except heatclient.exc.HTTPNotFound:
+            # Immediately after undeploying has started, heat returns this
+            # exception so we can take it as kind of init of undeploying.
+            all_resources_count = total_num_nodes_count
+
+        # TODO(lsmola) same as hack above
+        total_num_nodes_count = max(all_resources_count, total_num_nodes_count)
+
+        delete_progress = max(
+            5, 100 * (total_num_nodes_count - all_resources_count))
+
+        events = overcloud.stack_events
+        last_failed_events = [e for e in events
+                              if e.resource_status == 'DELETE_FAILED'][-3:]
+        return {
+            'overcloud': overcloud,
+            'progress': delete_progress,
+            'last_failed_events': last_failed_events,
+        }
+
+
 class ConfigurationTab(tabs.TableTab):
     table_classes = (tables.ConfigurationTable,)
     name = _("Configuration")
@@ -126,6 +166,12 @@ class LogTab(tabs.TableTab):
         return overcloud.stack_events
 
 
+class UndeployInProgressTabs(tabs.TabGroup):
+    slug = "undeploy_in_progress"
+    tabs = (UndeployInProgressTab, LogTab)
+    sticky = True
+
+
 class DetailTabs(tabs.TabGroup):
     slug = "detail"
     tabs = (OverviewTab, ConfigurationTab, LogTab)
diff --git a/tuskar_ui/infrastructure/overcloud/templates/overcloud/_detail_overview.html b/tuskar_ui/infrastructure/overcloud/templates/overcloud/_detail_overview.html
index b9f247f2..bcb85fba 100644
--- a/tuskar_ui/infrastructure/overcloud/templates/overcloud/_detail_overview.html
+++ b/tuskar_ui/infrastructure/overcloud/templates/overcloud/_detail_overview.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 {% load url from future%}
 
-{% if overcloud.is_deploying or overcloud.is_failed or overcloud.is_deleting %}
+{% if overcloud.is_deploying or overcloud.is_failed %}
   {% if overcloud.is_deploying %}
     <div class="alert alert-info">
       <div class="row-fluid">
@@ -11,15 +11,6 @@
             <div class="bar bar-info" style="width:{{ progress }}%"></div>
           </div>
         </div>
-  {% elif overcloud.is_deleting %}
-    <div class="alert alert-error">
-      <div class="row-fluid">
-        <div class="span2">
-          <strong>Undeploying...</strong>
-          <div class="progress progress-striped progress-danger">
-            <div class="bar bar-info" style="width:{{ progress }}%"></div>
-          </div>
-        </div>
   {% else %}
     <div class="alert alert-error">
       <div class="row-fluid">
@@ -54,7 +45,7 @@
 </div>
 {% endif %}
 
-{% if not dashboard_urls and not overcloud.is_deploying and not overcloud.is_failed and not overcloud.is_deleting %}
+{% if not dashboard_urls and not overcloud.is_deploying and not overcloud.is_failed %}
 <div class="row-fluid">
   <div class="span8">
     <p>Your OpenStack Deployment has been successfully deployed. It needs to be initialized before you will be able to use it.
diff --git a/tuskar_ui/infrastructure/overcloud/templates/overcloud/_undeploy_in_progress.html b/tuskar_ui/infrastructure/overcloud/templates/overcloud/_undeploy_in_progress.html
new file mode 100644
index 00000000..50abe0ed
--- /dev/null
+++ b/tuskar_ui/infrastructure/overcloud/templates/overcloud/_undeploy_in_progress.html
@@ -0,0 +1,57 @@
+{% load i18n %}
+
+<div class="row-fluid">
+  <div class="span12">
+    <div class="actions pull-right">
+    </div>
+    {% if overcloud.is_deleting %}
+    <div class="alert alert-error">
+      <div class="row-fluid">
+        <div class="span2">
+          <strong>Undeploying...</strong>
+          <div class="progress progress-striped progress-danger">
+            <div class="bar bar-info" style="width:{{ progress }}%"></div>
+          </div>
+        </div>
+    {% else %}
+    <div class="alert alert-error">
+      <div class="row-fluid">
+        <div class="span2">
+          <strong>Undeploying failed</strong>
+          <div class="progress progress-striped progress-danger">
+            <div class="bar bar-info" style="width:{{ progress }}%"></div>
+          </div>
+        </div>
+    {% endif %}
+        <div class="span10">
+          {% if last_failed_events %}
+            <strong>{% trans "Last failed events:" %}</strong>
+            {% for event in last_failed_events %}
+            <div>
+              <dl>
+                <dt>{% trans "Timestamp" %}</dt>
+                <dd><time datetime="{{ event.event_time }}">{{ event.event_time }}</time></dd>
+                <dt>{% trans "Resource Name" %}</dt>
+                <dd>{{ event.resource_name }}</dd>
+                <dt>{% trans "Status" %}</dt>
+                <dd>{{ event.resource_status }}</dd>
+                <dt>{% trans "Reason" %}</dt>
+                <dd>{{ event.resource_status_reason }}</dd>
+              </dl>
+            </div>
+            {% endfor %}
+          {% endif %}
+          <a href="?tab=undeploy_in_progress__log" data-toggle="tab" data-target="#undeploy_in_progress__log" class="pull-right">See full log</a>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+<script type="text/javascript">
+(window.$ || window.addHorizonLoadEvent)(function () {
+  $('div > a[data-target="#undeploy_in_progress__log"]').click(function () {
+     $('li > a[data-target="#undeploy_in_progress__log"]').tab('show');
+  });
+});
+</script>
diff --git a/tuskar_ui/infrastructure/overcloud/tests.py b/tuskar_ui/infrastructure/overcloud/tests.py
index a995744f..57c28dc4 100644
--- a/tuskar_ui/infrastructure/overcloud/tests.py
+++ b/tuskar_ui/infrastructure/overcloud/tests.py
@@ -29,6 +29,11 @@ CREATE_URL = urlresolvers.reverse(
     'horizon:infrastructure:overcloud:create')
 DETAIL_URL = urlresolvers.reverse(
     'horizon:infrastructure:overcloud:detail', args=(1,))
+UNDEPLOY_IN_PROGRESS_URL = urlresolvers.reverse(
+    'horizon:infrastructure:overcloud:undeploy_in_progress',
+    args=('overcloud',))
+UNDEPLOY_IN_PROGRESS_URL_LOG_TAB = (
+    UNDEPLOY_IN_PROGRESS_URL + "?tab=undeploy_in_progress__log")
 DETAIL_URL_CONFIGURATION_TAB = (DETAIL_URL +
                                 "?tab=detail__configuration")
 DETAIL_URL_LOG_TAB = (DETAIL_URL + "?tab=detail__log")
@@ -70,7 +75,10 @@ def _mock_overcloud(**kwargs):
             'id',
             'is_deployed',
             'is_deploying',
+            'is_deleting',
+            'is_delete_failed',
             'is_failed',
+            'all_resources',
             'resources',
             'stack',
             'stack_events',
@@ -86,7 +94,10 @@ def _mock_overcloud(**kwargs):
         'id': 1,
         'is_deployed': True,
         'is_deploying': False,
+        'is_deleting': False,
+        'is_delete_failed': False,
         'is_failed': False,
+        'all_resources.return_value': [],
         'resources.return_value': [],
         'stack_events': [],
         'stack': stack,
@@ -102,7 +113,8 @@ def _mock_overcloud(**kwargs):
 class OvercloudTests(test.BaseAdminViewTests):
 
     def test_index_overcloud_undeployed_get(self):
-        with patch('tuskar_ui.api.Overcloud.list', return_value=[]):
+        with _mock_overcloud(**{'get_the_overcloud.side_effect': None,
+                                'get_the_overcloud.return_value': None}):
             res = self.client.get(INDEX_URL)
 
         self.assertRedirectsNoFollow(res, CREATE_URL)
@@ -305,6 +317,41 @@ class OvercloudTests(test.BaseAdminViewTests):
             res = self.client.post(DELETE_URL)
         self.assertRedirectsNoFollow(res, INDEX_URL)
 
+    def test_undeploy_in_progress(self):
+        with _mock_overcloud(is_deleting=True, is_deployed=False):
+            res = self.client.get(UNDEPLOY_IN_PROGRESS_URL)
+
+        self.assertTemplateUsed(
+            res, 'infrastructure/overcloud/detail.html')
+        self.assertTemplateUsed(
+            res, 'infrastructure/overcloud/_undeploy_in_progress.html')
+        self.assertTemplateNotUsed(
+            res, 'horizon/common/_detail_table.html')
+
+    def test_undeploy_in_progress_finished(self):
+        with _mock_overcloud(**{'get_the_overcloud.side_effect': None,
+                                'get_the_overcloud.return_value': None}):
+            res = self.client.get(UNDEPLOY_IN_PROGRESS_URL)
+
+        self.assertRedirectsNoFollow(res, CREATE_URL)
+
+    def test_undeploy_in_progress_invalid(self):
+        with _mock_overcloud():
+            res = self.client.get(UNDEPLOY_IN_PROGRESS_URL)
+
+        self.assertRedirectsNoFollow(res, DETAIL_URL)
+
+    def test_undeploy_in_progress_log_tab(self):
+        with _mock_overcloud(is_deleting=True, is_deployed=False):
+            res = self.client.get(UNDEPLOY_IN_PROGRESS_URL_LOG_TAB)
+
+        self.assertTemplateUsed(
+            res, 'infrastructure/overcloud/detail.html')
+        self.assertTemplateNotUsed(
+            res, 'infrastructure/overcloud/_undeploy_in_progress.html')
+        self.assertTemplateUsed(
+            res, 'horizon/common/_detail_table.html')
+
     def test_scale_get(self):
         oc = None
         roles = TEST_DATA.tuskarclient_overcloud_roles.list()
diff --git a/tuskar_ui/infrastructure/overcloud/urls.py b/tuskar_ui/infrastructure/overcloud/urls.py
index 7756c6f1..d2244dcb 100644
--- a/tuskar_ui/infrastructure/overcloud/urls.py
+++ b/tuskar_ui/infrastructure/overcloud/urls.py
@@ -21,6 +21,9 @@ urlpatterns = urls.patterns(
     '',
     urls.url(r'^$', views.IndexView.as_view(), name='index'),
     urls.url(r'^create/$', views.CreateView.as_view(), name='create'),
+    urls.url(r'^(?P<overcloud_id>[^/]+)/undeploy-in-progress$',
+             views.UndeployInProgressView.as_view(),
+             name='undeploy_in_progress'),
     urls.url(r'^create/role-edit/(?P<role_id>[^/]+)$',
              views.OvercloudRoleEdit.as_view(), name='role_edit'),
     urls.url(r'^(?P<overcloud_id>[^/]+)/$', views.DetailView.as_view(),
diff --git a/tuskar_ui/infrastructure/overcloud/views.py b/tuskar_ui/infrastructure/overcloud/views.py
index 1ee0982e..c124bd5a 100644
--- a/tuskar_ui/infrastructure/overcloud/views.py
+++ b/tuskar_ui/infrastructure/overcloud/views.py
@@ -16,7 +16,10 @@ from django.core.urlresolvers import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.views.generic import base as base_views
 
+import heatclient
+from horizon import exceptions as horizon_exceptions
 import horizon.forms
+from horizon import messages
 from horizon import tables as horizon_tables
 from horizon import tabs as horizon_tabs
 from horizon.utils import memoized
@@ -32,6 +35,10 @@ from tuskar_ui.infrastructure.overcloud.workflows import undeployed
 
 
 INDEX_URL = 'horizon:infrastructure:overcloud:index'
+DETAIL_URL = 'horizon:infrastructure:overcloud:detail'
+CREATE_URL = 'horizon:infrastructure:overcloud:create'
+UNDEPLOY_IN_PROGRESS_URL = (
+    'horizon:infrastructure:overcloud:undeploy_in_progress')
 
 
 class OvercloudMixin(object):
@@ -59,22 +66,21 @@ class IndexView(base_views.RedirectView):
 
     def get_redirect_url(self):
         try:
-             # TODO(lsmola) implement this properly when supported by API
+            # TODO(lsmola) implement this properly when supported by API
             overcloud = api.Overcloud.get_the_overcloud(self.request)
-        except Exception:
+        except heatclient.exc.HTTPNotFound:
             overcloud = None
 
-        if overcloud is not None:
-            # TODO(lsmola) there can be a short period when overcloud
-            # is created, but stack not. So we have to make sure we have
-            # missing stack under control as a new STATE
-            # Also when deleting now, it first deletes Overcloud then Stack
-            # because stack takes much longer to delete. But we can probably
-            # ignore it for now and fix the worflow on API side.
-            redirect = reverse('horizon:infrastructure:overcloud:detail',
+        redirect = None
+        if overcloud is None:
+            redirect = reverse(CREATE_URL)
+        elif overcloud.is_deleting or overcloud.is_delete_failed:
+            redirect = reverse(UNDEPLOY_IN_PROGRESS_URL,
                                args=(overcloud.id,))
         else:
-            redirect = reverse('horizon:infrastructure:overcloud:create')
+            redirect = reverse(DETAIL_URL,
+                               args=(overcloud.id,))
+
         return redirect
 
 
@@ -102,7 +108,7 @@ class UndeployConfirmationView(horizon.forms.ModalFormView):
     template_name = 'infrastructure/overcloud/undeploy_confirmation.html'
 
     def get_success_url(self):
-        return reverse('horizon:infrastructure:overcloud:index')
+        return reverse(INDEX_URL)
 
     def get_context_data(self, **kwargs):
         context = super(UndeployConfirmationView,
@@ -116,6 +122,42 @@ class UndeployConfirmationView(horizon.forms.ModalFormView):
         return initial
 
 
+class UndeployInProgressView(horizon_tabs.TabView, OvercloudMixin, ):
+    tab_group_class = tabs.UndeployInProgressTabs
+    template_name = 'infrastructure/overcloud/detail.html'
+
+    def get_overcloud_or_redirect(self):
+        try:
+            # TODO(lsmola) implement this properly when supported by API
+            overcloud = api.Overcloud.get_the_overcloud(self.request)
+        except heatclient.exc.HTTPNotFound:
+            overcloud = None
+
+        if overcloud is None:
+            redirect = reverse(CREATE_URL)
+            messages.success(self.request,
+                             _("Undeploying of the Overcloud has finished."))
+            raise horizon_exceptions.Http302(redirect)
+        elif overcloud.is_deleting or overcloud.is_delete_failed:
+            return overcloud
+        else:
+            messages.error(self.request,
+                           _("Overcloud is not being undeployed."))
+            redirect = reverse(DETAIL_URL,
+                               args=(overcloud.id,))
+            raise horizon_exceptions.Http302(redirect)
+
+    def get_tabs(self, request, **kwargs):
+        overcloud = self.get_overcloud_or_redirect()
+        return self.tab_group_class(request, overcloud=overcloud, **kwargs)
+
+    def get_context_data(self, **kwargs):
+        context = super(UndeployInProgressView,
+                        self).get_context_data(**kwargs)
+        context['overcloud'] = self.get_overcloud_or_redirect()
+        return context
+
+
 class Scale(horizon.workflows.WorkflowView, OvercloudMixin):
     workflow_class = scale.Workflow
 
@@ -153,7 +195,7 @@ class OvercloudRoleView(horizon_tables.DataTableView,
 
     def get_data(self):
         overcloud = self.get_overcloud()
-        redirect = reverse('horizon:infrastructure:overcloud:detail',
+        redirect = reverse(DETAIL_URL,
                            args=(overcloud.id,))
         role = self.get_role(redirect)
         return self._get_nodes(overcloud, role)
@@ -162,7 +204,7 @@ class OvercloudRoleView(horizon_tables.DataTableView,
         context = super(OvercloudRoleView, self).get_context_data(**kwargs)
 
         overcloud = self.get_overcloud()
-        redirect = reverse('horizon:infrastructure:overcloud:detail',
+        redirect = reverse(DETAIL_URL,
                            args=(overcloud.id,))
         role = self.get_role(redirect)
         context['role'] = role
@@ -182,7 +224,7 @@ class OvercloudRoleEdit(horizon.forms.ModalFormView, OvercloudRoleMixin):
     template_name = 'infrastructure/overcloud/role_edit.html'
 
     def get_success_url(self):
-        return reverse('horizon:infrastructure:overcloud:create')
+        return reverse(CREATE_URL)
 
     def get_initial(self):
         role = self.get_role()