Integrate Hera v1

apps/zadmin/templates/admin/base.html

@@ -69,6 +69,7 @@
     <li class="top">
       <a href="#" class="controller">Server Config</a>
       <ul>
+        <li><a href="{{ url('zadmin.hera') }}">Hera</a></li>
         <li><a href="{{ url('zadmin.settings') }}">Settings</a></li>
       </ul>
     </li>

apps/zadmin/templates/zadmin/hera.html

@@ -0,0 +1,60 @@
+{% extends "admin/base.html" %}
+
+{% block title %}{{ page_title('Hera') }}{% endblock %}
+
+{% block content %}
+<h2>Hera</h2>
+<div class="primary featured">
+  {% if messages %}
+    {% for message in messages %}
+      {% if message %}
+        <div class="notification-box {{ message.tags }}">
+          <h2>{{ message|safe }}</h2>
+        </div>
+      {% endif %}
+    {% endfor %}
+  {% endif %}
+  {% if form %}
+  <form method="post" action="" class="featured-inner object-lead user-input">
+    {{ csrf() }}
+    <fieldset>
+      <p class="instruct">Want to get a message to Zeus out on the front
+        lines?  You've come to the right place.  The text area below accepts
+        a new-line separated list of simple expressions (wildcards are
+        supported) which will be flushed from the front end cache.
+      </p>
+      <ul>
+        <li>
+        <label for="id_prefix">Prefix</label>
+          {{ form.flushprefix|safe }}
+          {{ form.flushprefix.errors|safe }}
+          <p class="note">A prefix to prepend to all your patterns.  I suggest <strong>{{ settings.SITE_URL }}</strong></p>
+        </li>
+        <li>
+          {{ form.flushlist|safe }}
+          {{ form.flushlist.errors|safe }}
+          <p class="note">A new-line separated list of simple expressions (wildcards allowed) which will be flushed from
+          the front end cache.  Examples: <strong>/*addon/1865*</strong> or <strong>/de/jsi18n*</strong></p>
+        </li>
+      </ul>
+    </fieldset>
+    <div class="fm-control">
+      <button type="submit">Go go go</button>
+    </div>
+  </form>
+  {% endif %}
+</div>
+<div class="secondary">
+  <h3>Stats</h3>
+  {% if stats.num_lookups > 0 %}
+    {# Can't jinja2 detect a division by zero and just do something intelligent? #}
+    {% set hit_percentage = stats.num_hits / stats.num_lookups %}
+  {% else %}
+    {% set hit_percentage = 0 %}
+  {% endif %}
+  <ul>
+    <li>Using {{ stats.bytes_used|filesizeformat }} ({{ stats.percent_used }}% of total space) for {{ stats.entries }} objects.</li>
+    <li>We've had {{ stats.num_hits }} hits out of {{ stats.num_lookups }} lookups ({{ hit_percentage }}%).</li>
+  </ul>
+</div>
+{% endblock %}

apps/zadmin/urls.py

@@ -10,6 +10,7 @@ urlpatterns = patterns('',
     url('^$', lambda r: redirect('admin:index'), name='zadmin.home'),
     url('^env$', views.env, name='amo.env'),
     url('^flagged', views.flagged, name='zadmin.flagged'),
+    url('^hera', views.hera, name='zadmin.hera'),
     url('^settings', views.settings, name='zadmin.settings'),
 
     # The Django admin.

apps/zadmin/views.py

@@ -1,8 +1,14 @@
 from django import http
+# I'm so glad we named a function in here settings...
+from django.conf import settings as site_settings
 from django.contrib import admin
+from django.contrib import messages
 from django.shortcuts import redirect
 from django.views import debug
 
+import commonware.log
+from hera import Hera
+from hera.contrib.django_forms import FlushForm
 import jinja2
 import jingo
 
@@ -11,6 +17,8 @@ from addons.models import Addon
 from files.models import Approval
 from versions.models import Version
 
+log = commonware.log.getLogger('z.zadmin')
+
 
 @admin.site.admin_view
 def flagged(request):
@@ -53,6 +61,51 @@ def flagged(request):
                         {'addons': addons})
 
 
+@admin.site.admin_view
+def hera(request):
+    def _hera_fail(e):
+        msg = "We had some trouble talking to zeus"
+        messages.error(request, "%s: %s" % (msg, e))
+        log.error("[Hera] (user:%s): %s" % (request.user, e))
+
+    form = FlushForm(initial={'flushprefix': site_settings.SITE_URL})
+
+    try:
+        username = site_settings.HERA['username']
+        password = site_settings.HERA['password']
+        location = site_settings.HERA['location']
+    except (KeyError, AttributeError):
+        messages.error(request, "Sorry, Hera is not configured. :(")
+        form = None
+
+    if request.method == 'POST':
+        form = FlushForm(request.POST)
+        if form.is_valid():
+            hera = Hera(username, password, location)
+            expressions = request.POST['flushlist'].splitlines()
+
+            for i in expressions:
+                pattern = "%s%s" % (request.POST['flushprefix'], i)
+                total = len(hera.flushObjectsByPattern(pattern,
+                                                       return_list=True))
+
+                msg = "Flushing %s objects matching %s from cache" % (total,
+                                                                      pattern)
+                log.info("[Hera] (user:%s) %s" % (request.user, msg))
+                messages.success(request, msg)
+
+    try:
+        hera = Hera(username, password, location)
+        stats = hera.getGlobalCacheInfo()
+    except Exception, e:
+        # suds throws generic exceptions...
+        stats = None
+        form = None
+        _hera_fail(e)
+
+    return jingo.render(request, 'zadmin/hera.html',
+                        {'form': form, 'stats': stats})
+
 
 @admin.site.admin_view
 def settings(request):

requirements/prod.txt

@@ -6,6 +6,7 @@ phpserialize==1.2
 python-memcached==1.45
 pyquery==0.4
 South==0.7
+suds==0.3.9
 pytz==2010e
 GitPython==0.1.7
 celery==1.0.2
@@ -21,6 +22,7 @@ django-pylibmc==0.2.1
 -e git://github.com/jsocol/jingo-minify.git#egg=jingo-minify
 -e git://github.com/jsocol/bleach.git#egg=bleach
 -e git://github.com/jbalogh/schematic.git#egg=schematic
+-e git://github.com/clouserw/hera.git#egg=hera
 -e git://github.com/clouserw/tower.git#egg=tower
 -e git://github.com/jbalogh/django-queryset-transform.git#egg=django-queryset-transform
 -e git://github.com/jsocol/commonware.git#egg=commonware

settings.py

@@ -487,6 +487,12 @@ CUSTOM_DUMPS = {
     }
 }
 
+## Hera
+HERA = {'username': '',
+        'password': '',
+        'location': '',
+       }
+
 # Logging
 LOG_LEVEL = logging.DEBUG
 HAS_SYSLOG = True  # syslog is used if HAS_SYSLOG and NOT DEBUG.
@@ -500,6 +506,7 @@ LOGGING = {
     'loggers': {
         'amqplib': {'handlers': ['null']},
         'caching': {'handlers': ['null']},
+        'suds': {'handlers': ['null']},
         'z.sphinx': {'level': logging.INFO},
         'z.task': {'level': logging.INFO},
     },