fix stats in API

frontend/package.json

@@ -8,6 +8,7 @@
     "@blueprintjs/select": "^3.1.0",
     "classnames": "^2.2.6",
     "cross-fetch": "^2.2.2",
+    "moment": "^2.22.2",
     "normalize.css": "^8.0.0",
     "react": "^16.4.2",
     "react-dom": "^16.4.2",

frontend/src/components/Sidebar.tsx

@@ -1,3 +1,4 @@
+import * as moment from 'moment';
 import * as React from 'react';
 import { connect } from 'react-redux';
 import { Dispatch } from 'redux';
@@ -74,6 +75,7 @@ class SidebarImpl extends React.Component<ISidebarProps> {
         const userCount = this.props.instanceDetails!.userCount;
         const statusCount = this.props.instanceDetails!.statusCount;
         const domainCount = this.props.instanceDetails!.domainCount;
+        const lastUpdated = this.props.instanceDetails!.lastUpdated;
         if (!userCount && !statusCount && !domainCount) {
             return;
         }
@@ -94,6 +96,10 @@ class SidebarImpl extends React.Component<ISidebarProps> {
                             <td>Known peers</td>
                             <td>{domainCount || "Unknown"}</td>
                         </tr>
+                        <tr>
+                            <td>Last updated</td>
+                            <td>{moment(lastUpdated + "Z").fromNow() || "Unknown"}</td>
+                        </tr>
                     </tbody>
                 </HTMLTable>
                 <Divider />
@@ -103,7 +109,7 @@ class SidebarImpl extends React.Component<ISidebarProps> {
 
     private renderPeers = () => {
         const peers = this.props.instanceDetails!.peers;
-        if (!peers) {
+        if (!peers || peers.length === 0) {
             return;
         }
         const peerRows = peers.map(instance => (

frontend/yarn.lock

@@ -4680,6 +4680,10 @@ mkdirp@0.5.x, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.0, mkdirp@~0.5.1:
   dependencies:
     minimist "0.0.8"
 
+moment@^2.22.2:
+  version "2.22.2"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.22.2.tgz#3c257f9839fc0e93ff53149632239eb90783ff66"
+
 move-concurrently@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/move-concurrently/-/move-concurrently-1.0.1.tgz#be2c005fda32e0b29af1f05d7c4b33214c701f92"

scraper/management/commands/_util.py

@@ -58,7 +58,7 @@ def get_key(data, keys: list):
 
 
 def validate_int(integer):
-    return isinstance(integer, int) and 0 <= integer < 2147483647 or None
+    return integer if (isinstance(integer, int) and 0 <= integer < 2147483647) else None
 
 
 def log(text):