Update new botlist to use dimensions endpoint

appengine/swarming/elements/res/js/common.js

Index: appengine/swarming/elements/res/js/common.js
diff --git a/appengine/swarming/elements/res/js/common.js b/appengine/swarming/elements/res/js/common.js
index 0222686f2ceec2ad6e2b6d2fdc7c04ae1b7ff7a3..5994cf24d6daf45a33c7a9bd3e5ff16cc5c7175d 100644
--- a/appengine/swarming/elements/res/js/common.js
+++ b/appengine/swarming/elements/res/js/common.js
@@ -3,6 +3,7 @@
 // that can be found in the LICENSE file.
 
 window.swarming = window.swarming || function() {

[jcgregorio, 2016/08/08 16:14:42]

None of this code depends on the DOM, so it should be possible to create unit
tests for this code that is run through node. Can be done in a later CL.

[kjlubick, 2016/08/08 19:07:10]

Changed window -> this, like we do for Skia in
https://github.com/google/skia-buildbot/blob/a5ddd8d63e3aa3b71d7fa4520c451fa1...

+
   var swarming = {};
 
   swarming.stableSort = function(arr, comp) {
@@ -43,10 +44,71 @@ window.swarming = window.swarming || function() {
     // Try numeric, aka "natural" sort and use it if ns is not NaN.
     // Javascript will try to corece these to numbers or return NaN.
     var ns = a - b;
-    if (ns) {
+    if (!isNaN(ns)) {
       return ns;
     }
     return a.localeCompare(b);
+  };
+
+
+  var TIME_DELTAS = [
+    { units: "w", delta: 7*24*60*60 },
+    { units: "d", delta:   24*60*60 },
+    { units: "h", delta:      60*60 },
+    { units: "m", delta:         60 },
+    { units: "s", delta:          1 },
+  ];
+
+  /**
+   * Returns the difference between the specified time and 's' as a string in a
+   * human friendly format.
+   * If left unspecified, "now" defaults to Date.now()
+   * If 's' is a number it is assumed to contain the time in milliseconds
+   * otherwise it is assumed to contain a time string.
+   *
+   * For example, a difference of 123 seconds between 's' and the current time
+   * would return "2m".
+   */
+  swarming.diffDate = function(s, now) {
+    var ms = (typeof(s) == "number") ? s : Date.parse(s);
+    now = now || Date.now();
+    var diff = (ms - now)/1000;
+    if (diff < 0) {
+      diff = -1.0 * diff;
+    }
+    return humanize(diff, TIME_DELTAS);
+  };
+
+  swarming.KB = 1024;
+  swarming.MB = swarming.KB * 1024;
+  swarming.GB = swarming.MB * 1024
+
+  var BYTES_DELTAS = [
+    { units: " TB", delta: 1024*swarming.GB},
+    { units: " GB", delta:      swarming.GB},
+    { units: " MB", delta:      swarming.MB},
+    { units: " KB", delta:      swarming.KB},
+    { units: " B",  delta:                1},
+  ];
+
+  swarming.humanBytes = function(b, unit) {
+    if (Number.isInteger(unit)) {
+      b = b * unit;
+    }
+    return humanize(b, BYTES_DELTAS);
+  }
+
+  function humanize(n, deltas) {
+    for (var i=0; i<deltas.length-1; i++) {
+      // If n would round to '60s', return '1m' instead.
+      var nextDeltaRounded =
+          Math.round(n/deltas[i+1].delta)*deltas[i+1].delta;
+      if (nextDeltaRounded/deltas[i].delta >= 1) {
+        return Math.round(n/deltas[i].delta)+deltas[i].units;
+      }
+    }
+    var i = DELTAS.length-1;
+    return Math.round(n/DELTAS[i].delta)+DELTAS[i].units;
   }
 
   return swarming;