feature #1369. Add information to Sunstone conf file and VNC log. Default value for session is memory.

src/sunstone/OpenNebulaVNC.rb

@@ -63,7 +63,7 @@ class OpenNebulaVNC
         end
 
         if @proxy_path == nil || @proxy_path.empty?
-            @logger.error "VNC proxy not configured"
+            @logger.error "VNC proxy not configured. Try #{SHARE_LOCATION}/install_novnc.sh"
             return false
         end
 

src/sunstone/bin/novnc-server

@@ -23,12 +23,14 @@ if !ONE_LOCATION
     LOG_LOCATION = "/var/log/one"
     LOCK_LOCATION = "/var/lock/one"
     VAR_LOCATION = "/var/lib/one"
+    SHARE_LOCATION = "/usr/share/one"
     ETC_LOCATION = "/etc/one"
     RUBY_LIB_LOCATION = "/usr/lib/one/ruby"
 else
     VAR_LOCATION = ONE_LOCATION + "/var"
     LOCK_LOCATION = ONE_LOCATION + "/var"
     LOG_LOCATION = ONE_LOCATION + "/var"
+    SHARE_LOCATION = ONE_LOCATION + "/share"
     ETC_LOCATION = ONE_LOCATION + "/etc"
     RUBY_LIB_LOCATION = ONE_LOCATION+"/lib/ruby"
 end

src/sunstone/etc/sunstone-server.conf

@@ -34,6 +34,9 @@
 # Place where to store sessions, this value can be memory or memcache
 # Use memcache when starting multiple server processes, for example,
 # with passenger
+#
+# NOTE. memcache needs a separate memcached server to be configured. Refer
+# to memcached documentation to configure the server.
 :sessions: memory
 
 # Memcache configuration

src/sunstone/sunstone-server.rb

@@ -81,7 +81,7 @@ set :bind, settings.config[:host]
 set :port, settings.config[:port]
 
 case settings.config[:sessions]
-when 'memory'
+when 'memory', nil
     use Rack::Session::Pool, :key => 'sunstone'
 when 'memcache'
     memcache_server=settings.config[:memcache_host]+':'<<
@@ -92,7 +92,6 @@ when 'memcache'
     use Rack::Session::Memcache,
         :memcache_server => memcache_server,
         :namespace => settings.config[:memcache_namespace]
-
 else
     STDERR.puts "Wrong value for :sessions in configuration file"
     exit(-1)