From 49a76d18a88a64f1b6e3bb50db219dc4d853ae9c Mon Sep 17 00:00:00 2001
From: Max Neunhoeffer <max@arangodb.com>
Date: Wed, 28 May 2014 15:43:11 +0200
Subject: [PATCH] IsHealthy for clusters on client of dispatcher.

---
 js/client/modules/org/arangodb/cluster.js | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/js/client/modules/org/arangodb/cluster.js b/js/client/modules/org/arangodb/cluster.js
index aba5e5db6c..0be4e1a5fc 100644
--- a/js/client/modules/org/arangodb/cluster.js
+++ b/js/client/modules/org/arangodb/cluster.js
@@ -219,11 +219,40 @@ function Shutdown() {
   }
 }
 
+function IsHealthy() {
+  var db = require("internal").db;
+  var print = require("internal").print;
+  var col = db._cluster_kickstarter_plans;
+  print("\nHello, this is the ArangoDB cluster health check function...\n");
+  if (col === undefined || col.count() === 0) {
+    print("I did not find a cluster plan, therefore I give up.");
+  }
+  else {
+    var x = col.any();
+    if (! x.hasOwnProperty("runInfo")) {
+      print("Warning: It seems your cluster is already shutdown. I give up.");
+    }
+    else {
+      var Kickstarter = require("org/arangodb/cluster").Kickstarter;
+      var k = new Kickstarter(x.plan);
+      k.runInfo = x.runInfo;
+      var r = k.isHealthy();
+      if (r.error === true) {
+        print("Error: Health check went wrong.");
+        return r;
+      }
+      print("Health check successful.");
+      return r;
+    }
+  }
+}
+
 exports.Planner = Planner;
 exports.Kickstarter = Kickstarter;
 exports.Upgrade = Upgrade;
 exports.Relaunch = Relaunch;
 exports.Shutdown = Shutdown;
+exports.IsHealthy = IsHealthy;
 
 // -----------------------------------------------------------------------------
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