Implement host detail

Implemented host detail functionality.
Also Added test case for host detail.

Partial-Implements: blueprint masakari-dashboard

Change-Id: I7e62e4a2b1e15ddeb2a592670518d8358f4a6b1c

masakaridashboard/api/api.py

@@ -151,3 +151,8 @@ def get_host_list(request, segment_id, filters):
 def delete_host(request, host_id, segment_id):
     return openstack_connection(request).delete_host(
         host_id, segment_id, False)
+
+
+def get_host(request, segment_id, host_id):
+    """return single host."""
+    return openstack_connection(request).get_host(host_id, segment_id)

masakaridashboard/hosts/tables.py

@@ -66,7 +66,8 @@ class DeleteHost(tables.DeleteAction):
 
 class HostTable(tables.DataTable):
 
-    name = tables.Column('name', verbose_name=_("Name"))
+    name = tables.Column('name', verbose_name=_("Name"),
+                         link="horizon:masakaridashboard:hosts:detail")
     uuid = tables.Column('uuid', verbose_name=_("UUID"))
     reserved = tables.Column(
         'reserved', verbose_name=_("Reserved"))
@@ -78,7 +79,8 @@ class HostTable(tables.DataTable):
     on_maintenance = tables.Column(
         'on_maintenance', verbose_name=_("On Maintenance"))
     failover_segment_id = tables.Column(
-        'failover_segment_id', verbose_name=_("Failover Segment"))
+        'failover_segment_id', verbose_name=_("Failover Segment"),
+        link="horizon:masakaridashboard:segments:detail")
 
     def get_object_id(self, datum):
         return datum.uuid + ',' + datum.failover_segment_id

masakaridashboard/hosts/tabs.py

@@ -0,0 +1,31 @@
+# Copyright (c) 2018 NTT DATA
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from django.utils.translation import ugettext_lazy as _
+
+from horizon import tabs
+
+
+class OverviewTab(tabs.Tab):
+    name = _("Hosts")
+    slug = "hosts"
+    template_name = ("masakaridashboard/hosts/_detail_overview.html")
+
+    def get_context_data(self, request):
+        return {"host": self.tab_group.kwargs['host']}
+
+
+class HostDetailTabs(tabs.DetailTabsGroup):
+    slug = "host_details"
+    tabs = (OverviewTab,)

masakaridashboard/hosts/templates/hosts/_detail_overview.html

@@ -0,0 +1,21 @@
+{% load i18n sizeformat parse_date %}
+  <div class="detail">
+        <h4>{% trans "Host Detail" %}</h4>
+        <hr class="header_rule">
+        <dl class="dl-horizontal">
+            <dt>{% trans "Name" %}</dt>
+            <dd>{{ host.name }}</dd>
+            <dt>{% trans "UUID" %}</dt>
+            <dd>{{ host.uuid }}</dd>
+            <dt>{% trans "Failover Segment" %}</dt>
+            <dd>{{ host.failover_segment_id }}</dd>
+            <dt>{% trans "Reserved" %}</dt>
+            <dd>{{ host.reserved }}</dd>
+            <dt>{% trans "On Maintenance" %}</dt>
+            <dd>{{ host.on_maintenance }}</dd>
+            <dt>{% trans "Type" %}</dt>
+            <dd>{{ host.type }}</dd>
+            <dt>{% trans "Control Attribute" %}</dt>
+            <dd>{{ host.control_attributes }}</dd>
+        </dl>
+  </div>

masakaridashboard/hosts/templates/hosts/detail.html

@@ -0,0 +1,32 @@
+<span class="masakari-wrapper detail-screen">
+{% extends 'masakaridashboard/default/base.html' %}
+{% load i18n %}
+{% block title %}{% trans "Host Detail" %}{% endblock %}
+
+{% block page_header %}
+  {% include "horizon/common/_page_header.html" with title=_("Host Detail") %}
+{% endblock page_header %}
+{% block main %}
+{% load i18n sizeformat parse_date %}
+  <div class="detail">
+        <h4>{% trans "Host Detail" %}</h4>
+        <hr class="header_rule">
+        <dl class="dl-horizontal">
+            <dt>{% trans "UUID" %}</dt>
+            <dd>{{ host.uuid }}</dd>
+            <dt>{% trans "Name" %}</dt>
+            <dd>{{ host.name }}</dd>
+            <dt>{% trans "Reserved" %}</dt>
+            <dd>{{ host.reserved }}</dd>
+            <dt>{% trans "Type" %}</dt>
+            <dd>{{ host.type }}</dd>
+            <dt>{% trans "Control Attribute" %}</dt>
+            <dd>{{ host.control_attributes }}</dd>
+            <dt>{% trans "On Maintenance" %}</dt>
+            <dd>{{ host.on_maintenance }}</dd>
+            <dt>{% trans "Failover Segment" %}</dt>
+            <dd>{{ host.failover_segment_id }}</dd>
+        </dl>
+  </div>
+{% endblock %}
+</span>

masakaridashboard/hosts/tests.py

@@ -93,3 +93,17 @@ class HostTest(test.TestCase):
             host.uuid,
             host.failover_segment_id,
         )
+
+    def test_detail(self):
+        host = self.masakari_host.list()[0]
+        id_to_update = host.uuid+','+host.failover_segment_id
+        detail_url = reverse('horizon:masakaridashboard:hosts:detail',
+                             args=[id_to_update])
+        with mock.patch('masakaridashboard.api.api.get_host',
+                        return_value=self.masakari_host.list()[0]):
+            res = self.client.get(detail_url)
+        self.assertNoFormErrors(res)
+        self.assertEqual(200, res.status_code)
+        self.assertTemplateUsed(res, 'horizon/common/_detail.html')
+        self.assertTemplateUsed(
+            res, 'masakaridashboard/hosts/_detail_overview.html')

masakaridashboard/hosts/urls.py

@@ -17,6 +17,8 @@ from django.conf.urls import url
 from masakaridashboard.hosts import views
 
 
+HOST = r'^(?P<host_id>[^/]+)/%s$'
 urlpatterns = [
     url(r'^$', views.IndexView.as_view(), name='index'),
+    url(HOST % 'detail', views.DetailView.as_view(), name='detail'),
 ]

masakaridashboard/hosts/views.py

@@ -13,10 +13,17 @@
 # limitations under the License.
 
 from django.conf import settings
+from django.core.urlresolvers import reverse
+from django.utils.translation import ugettext_lazy as _
+
+from horizon import exceptions
 from horizon import tables
+from horizon import tabs
+from horizon.utils import memoized
 
 from masakaridashboard.api import api
 from masakaridashboard.hosts import tables as masakari_tab
+from masakaridashboard.hosts import tabs as host_tab
 
 
 class IndexView(tables.DataTableView):
@@ -45,3 +52,39 @@ class IndexView(tables.DataTableView):
                 host_list.append(item)
 
         return host_list
+
+
+class DetailView(tabs.TabbedTableView):
+    tab_group_class = host_tab.HostDetailTabs
+    template_name = 'horizon/common/_detail.html'
+    page_title = "{{ host.name|default:host.id }}"
+
+    def get_context_data(self, **kwargs):
+        context = super(DetailView, self).get_context_data(**kwargs)
+        host = self.get_data()
+        table = masakari_tab.HostTable(self.request)
+        context["host"] = host
+        context["url"] = self.get_redirect_url()
+        context["actions"] = table.render_row_actions(host)
+        return context
+
+    @memoized.memoized_method
+    def get_data(self):
+        row_data = self.kwargs['host_id'].split(',')
+        segment_id = row_data[1]
+        host_id = row_data[0]
+        try:
+            host = api.get_host(self.request, segment_id, host_id)
+        except Exception:
+            msg = _('Unable to get host "%s".') % host_id
+            redirect = reverse('horizon:masakaridashboard:hosts:index')
+            exceptions.handle(self.request, msg, redirect=redirect)
+
+        return host
+
+    def get_redirect_url(self):
+        return reverse('horizon:masakaridashboard:hosts:index')
+
+    def get_tabs(self, request, *args, **kwargs):
+        host = self.get_data()
+        return self.tab_group_class(request, host=host, **kwargs)

masakaridashboard/segments/tabs.py

@@ -1,4 +1,4 @@
-# Copyright (C) 2018 NTT DATA
+# Copyright (c) 2018 NTT DATA
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
 #    not use this file except in compliance with the License. You may obtain
@@ -16,6 +16,9 @@ from django.utils.translation import ugettext_lazy as _
 
 from horizon import tabs
 
+from masakaridashboard.api import api
+from masakaridashboard.hosts import tables as host_table
+
 
 class OverviewTab(tabs.Tab):
     name = _("Segments")
@@ -26,6 +29,30 @@ class OverviewTab(tabs.Tab):
         return {"segment": self.tab_group.kwargs['segment']}
 
 
+class HostTab(tabs.TableTab):
+    table_classes = (host_table.HostTable,)
+    name = _("Hosts")
+    slug = "host_tab"
+    template_name = "horizon/common/_detail_table.html"
+    preload = False
+
+    def get_host_data(self):
+        segment_data = self.tab_group.kwargs['segment_id']
+        if len(segment_data.split(',')) > 1:
+            segment_id = segment_data.split(',')[1]
+        else:
+            segment_id = segment_data
+
+        host_list = []
+
+        host_gen = api.get_host_list(self.request, segment_id, filters={})
+
+        for item in host_gen:
+            host_list.append(item)
+
+        return host_list
+
+
 class SegmentDetailTabs(tabs.DetailTabsGroup):
     slug = "segment_details"
-    tabs = (OverviewTab,)
+    tabs = (OverviewTab, HostTab)

masakaridashboard/segments/views.py

@@ -117,7 +117,12 @@ class DetailView(tabs.TabbedTableView):
     @memoized.memoized_method
     def get_data(self):
         try:
-            segment_id = self.kwargs['segment_id']
+            segment_data = self.kwargs['segment_id']
+            if len(segment_data.split(',')) > 1:
+                segment_id = segment_data.split(',')[1]
+            else:
+                segment_id = segment_data
+
             segment = api.get_segment(self.request, segment_id)
         except Exception:
             msg = _('Unable to get segment "%s".') % segment_id