Add timezone config/ENV support for the clock widget

Dockerfile

@@ -28,6 +28,7 @@ ENV ICINGA2_API_CERT_PATH pki/
 ENV ICINGA2_API_NODENAME localhost
 ENV ICINGAWEB2_URL http://localhost/icingaweb2
 ENV DASHBOARD_SHOW_ONLY_HARD_STATE_PROBLEMS 0
+ENV DASHBOARD_TIMEZONE UTC
 
 
 EXPOSE 8005

README.md

@@ -244,13 +244,15 @@ vim config/icinga2.local.json
     "url": "http://localhost/icingaweb2"
   },
   "dashboard": {
-    "show_only_hard_state_problems": false
+    "show_only_hard_state_problems": false,
+    "timezone": "UTC"
   }
 }
 ```
 
 The `show_only_hard_state_problems` option ignores NOT-OK states until they
-reach a hard NOT-OK state (off by default).
+reach a hard NOT-OK state (off by default). The `timezone` option controls the clock widget's
+timezone.
 
 If you prefer to use client certificates, set the `pki_path` attribute. The Icinga 2
 job expects the certificate file names based on the local FQDN e.g. `pki/icinga2-master1.localdomain.crt`.
@@ -272,7 +274,8 @@ explicitly.
     "url": "http://localhost/icingaweb2"
   },
   "dashboard": {
-    "show_only_hard_state_problems": false
+    "show_only_hard_state_problems": false,
+    "timezone": "UTC"
   }
 }
 ```
@@ -296,6 +299,7 @@ ICINGA2\_API\_CERT\_PATH | **Optional.** Client certificate path.
 ICINGA2\_API\_NODENAME   | **Optional.** If client certificates do not match the host name, override it.
 ICINGAWEB2\_URL          | **Optional.** Set the Icinga Web 2 Url. Defaults to `http://localhost/icingaweb2`.
 DASHBOARD_SHOW_ONLY_HARD_STATE_PROBLEMS | **Optional.** Set `show_only_hard_state_problems` configuration option, toggle with `0|1`.
+DASHBOARD_TIMEZONE       | **Optional.** Set the `timezone` option for the dashboard, overriding the default `UTC` value.
 
 > **Note**
 >

config.ru

@@ -28,6 +28,16 @@ configure do
         return 'http://192.168.33.5/icingaweb2'
       end
     end
+
+    def getTimeZone()
+      # read configuration and try to fetch the correct path
+      icinga = Icinga2.new('config/icinga2.json') # fixed path
+      if icinga.time_zone != nil
+        return icinga.time_zone
+      else
+        return "UTC"
+      end
+    end
   end
 end
 

config/icinga2.json

@@ -11,6 +11,7 @@
     "url": "http://localhost/icingaweb2"
   },
   "dashboard": {
-    "show_only_hard_state_problems": false
+    "show_only_hard_state_problems": false,
+    "timezone": "UTC"
   }
 }

dashboards/icinga2.erb

@@ -14,7 +14,7 @@ $(function() {
   <ul>
     <!-- Statistics -->
     <li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
-      <div data-view="Clock" data-title="UTC" data-timezone="UTC"></div>
+      <div data-view="Clock" data-title="<%=getTimeZone()%>" data-timezone="<%=getTimeZone()%>"></div>
     </li>
 
     <li data-row="1" data-col="2" data-sizex="1" data-sizey="1">

lib/icinga2.rb

@@ -30,6 +30,7 @@ class Icinga2
   attr_reader :app_starttime
   attr_reader :uptime
   attr_reader :icingaweb2_url
+  attr_reader :time_zone
 
   # general stats
   attr_reader :avg_latency
@@ -112,7 +113,9 @@ def getConfEnv()
     # external attribute
     @icingaweb2_url = ENV['ICINGAWEB2_URL']
 
+    # dashboards
     @showOnlyHardStateProblems = ENV['DASHBOARD_SHOW_ONLY_HARD_STATE_PROBLEMS']
+    @time_zone = ENV['DASHBOARD_TIMEZONE']
 
     # check for the least required variables, the rest is read later on
     if [@host, @port].all? {|value| value.nil? or value == ""}
@@ -166,6 +169,10 @@ def getConfFile(configFile)
           if config_dashboard.key? 'show_only_hard_state_problems' # retire this check later
             @showOnlyHardStateProblems = config_dashboard['show_only_hard_state_problems']
           end
+
+          if config_dashboard.key? 'timezone'
+            @time_zone = config_dashboard['timezone']
+          end
         end
 
         if @config.key? 'icingaweb2'
@@ -181,6 +188,7 @@ def getConfFile(configFile)
         @pkiPath = "pki/"
         @nodeName = nil
         @showOnlyHardStateProblems = false
+        @time_zone = "UTC"
 
         # external attribute
         @icingaweb2_url = 'http://localhost/icingaweb2'