added error history feature

lib/upbeat/meta-data.ms

@@ -23,6 +23,9 @@ export class MetaData {
 
     this.totalResTime = 0;
     this.totalCount   = 0;
+
+    this.errorHistory = [];
+
     this.lastErrorMessage = null;
     this.lastResponseTime = null;
 
@@ -77,6 +80,10 @@ export class MetaData {
       this.up = passed;
       this.emit('down', error);
       this.emit('change');
+      this.errorHistory.push({
+        error: error,
+        timestamp: now
+      });
     }
 
     this.wasUp = passed;

lib/upbeat/www/routes/services.ms

@@ -6,7 +6,7 @@ module.exports = #(app, upbeat) {
     var service = upbeat.getService(req.params.service);
     if (! service) {
       res.send("Service not found", 404);
-      return false; 
+      return false;
     } else {
       return service
     }
@@ -41,23 +41,24 @@ module.exports = #(app, upbeat) {
             avgRespTime: action.meta.averageResponseTime(period),
             interval: action.interval,
             timeout:  action.timeout,
-            passes: action.meta.total('passed-count'), 
-            failures: action.meta.total('failed-count')
+            passes: action.meta.total('passed-count'),
+            failures: action.meta.total('failed-count'),
+            errorHistory: action.meta.errorHistory
           },
 
           responseTimes: action.meta.plotResponseTimes('min')
         };
 
         res.send(JSON.stringify(ret));
-      } 
-      
+      }
+
       else {
         res.render('action', { action: action, service: service });
       }
     }
   });
 
-  app.get('/services/:service/health', #(req, res, next) { 
+  app.get('/services/:service/health', #(req, res, next) {
     var service = getService(req, res);
     if (service) {
       if (service.up) {

lib/upbeat/www/views/action.jade

@@ -3,7 +3,7 @@ block content
   ul.breadcrumb
     li
       a(href="/services/#{service.name}")= service.name
-      span.divider / 
+      span.divider /
     li.active= action.name
 
 
@@ -31,6 +31,8 @@ block content
       th Passed Count
       td#passes
 
+  h3 Error History
+  table.table.table-condensed.table-bordered.table-striped#errorHistory
 
   h3 Performance
   #container(style="width:100%;height:500px")
@@ -44,24 +46,43 @@ block content
     }
 
     var chart = null;
+
     function updateData(payload) {
       var meta = payload.meta;
       var data = payload.responseTimes;
 
-      for (var k in meta) $('#' + k).html(meta[k]);
+      for (var k in meta) {
+        var html = '';
+
+        if (k == 'errorHistory') {
+          html = meta.errorHistory.map(function (e) {
+            return '<tr>' +
+                     '<td>' + e.error + '</td>' +
+                     '<td>@</td>' +
+                     '<td>' + new Date(e.timestamp) + '</td>' +
+                   '</tr>';
+          }).join("\n");
+        }
+
+        else {
+          html = meta[k];
+        }
+
+        $('#' + k).html(html)
+      }
 
       if (chart) {
         chart.series[0].setData(data, true);
         return;
       }
 
       chart = new Highcharts.Chart({
-        chart: { 
+        chart: {
           renderTo: 'container',
           type: 'line'
-        }, 
+        },
 
-        xAxis: { 
+        xAxis: {
           title: { text: 'Seconds Ago' },
           categories: #{categories.min.data}
         },

package.json

@@ -3,7 +3,7 @@
   "description":  "Fast health and performance monitoring with process handling",
   "keywords":     ["javascript", "performance", "health", "monitoring", "monit", "haproxy", "forever", "process", "systems"],
   "author":       "Jeff Su <me@jeffsu.com>",
-  "version":      "0.2.3-pre12",
+  "version":      "0.2.3-pre13",
   "licenses":     [{ "type": "MIT" }],
   "engines":      { "node":  ">=0.5.0" },
   "directories" : { "lib" : "./lib/upbeat" },