Start on adding usage charts

endpoints/realtime.py

@@ -4,13 +4,46 @@ import json
 from flask import request, Blueprint, abort, Response
 from flask.ext.login import current_user
 from auth.auth import require_session_login
+from endpoints.common import route_show_if
 from app import userevents
+from auth.permissions import SuperUserPermission
+
+import features
+import psutil
+import time
 
 logger = logging.getLogger(__name__)
 
 realtime = Blueprint('realtime', __name__)
 
 
+@realtime.route("/ps")
+@route_show_if(features.SUPER_USERS)
+@require_session_login
+def ps():
+  if not SuperUserPermission().can():
+    abort(403)
+
+  def generator():
+    while True:
+      data = {
+        'count': {
+          'cpu': psutil.cpu_percent(interval=1, percpu=True),
+          'virtual_mem': psutil.virtual_memory(),
+          'swap_mem': psutil.swap_memory(),
+          'connections': len(psutil.net_connections()),
+          'processes': len(psutil.pids()),
+          'network': psutil.net_io_counters()
+        }
+      }
+      json_string = json.dumps(data)
+      yield 'data: %s\n\n' % json_string
+      time.sleep(0.25)
+
+  return Response(generator(), mimetype="text/event-stream")
+
+
+
 @realtime.route("/user/")
 @require_session_login
 def index():