Add support for restarting tempmon client

tailbone/templates/tempmon/clients/view.mako

@@ -0,0 +1,22 @@
+## -*- coding: utf-8 -*-
+<%inherit file="/master/view.mako" />
+
+<%def name="head_tags()">
+  ${parent.head_tags()}
+  <script type="text/javascript">
+    $(function() {
+        $('#restart-client').click(function() {
+            $(this).button('disable').button('option', 'label', "Restarting, please wait...");
+            location.href = '${url('tempmon.clients.restart', uuid=instance.uuid)}';
+        });
+    });
+  </script>
+</%def>
+
+${parent.body()}
+
+% if instance.enabled and request.has_perm('tempmon.clients.restart'):
+    <div class="buttons">
+      <button type="button" id="restart-client">Restart this Client</button>
+    </div>
+% endif

tailbone/views/tempmon/clients.py

@@ -26,6 +26,8 @@ Views for tempmon clients
 
 from __future__ import unicode_literals, absolute_import
 
+import subprocess
+
 from rattail.db import model
 
 import formalchemy as fa
@@ -102,6 +104,35 @@ class TempmonClientView(MasterView):
             del fs.probes
             del fs.online
 
+    def restart(self):
+        client = self.get_instance()
+        try:
+            subprocess.check_output(['ssh', client.hostname, 'sudo service tempmon restart'],
+                                    stderr=subprocess.STDOUT)
+        except subprocess.CalledProcessError as error:
+            self.request.session.flash("Failed to restart client: {}".format(error.output), 'error')
+        else:
+            self.request.session.flash("Client has been restarted: {}".format(
+                self.get_instance_title(client)))
+        return self.redirect(self.get_action_url('view', client))
+
+    @classmethod
+    def defaults(cls, config):
+        route_prefix = cls.get_route_prefix()
+        url_prefix = cls.get_url_prefix()
+        permission_prefix = cls.get_permission_prefix()
+        model_key = cls.get_model_key()
+        model_title = cls.get_model_title()
+
+        cls._defaults(config)
+
+        # restart tempmon client
+        config.add_tailbone_permission(permission_prefix, '{}.restart'.format(permission_prefix),
+                                       "Restart a {}".format(model_title))
+        config.add_route('{}.restart'.format(route_prefix), '{}/{{{}}}/restart'.format(url_prefix, model_key))
+        config.add_view(cls, attr='restart', route_name='{}.restart'.format(route_prefix),
+                        permission='{}.restart'.format(permission_prefix))
+
 
 def includeme(config):
     TempmonClientView.defaults(config)