Widget improvements

scripts/lua/widgets/widget.lua

@@ -0,0 +1,47 @@
+--
+-- (C) 2020 - ntop.org
+--
+
+--
+-- This is the main widget entrypoint that renders all widgets
+--
+
+dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+require ("lua_utils")
+
+local dkjson = require("dkjson")
+local datasources_utils = require("datasources_utils")
+local widget_utils = require("widget_utils")
+
+local function reportError(msg)
+    print(dkjson.encode({ success = false, message = msg }))
+ end
+
+-- ###############################################
+
+local json = _GET["JSON"]
+
+local widget_data
+
+if(json == nil) then
+   widget_data = {}
+else
+   widget_data = dkjson.decode(json)
+end
+
+sendHTTPContentTypeHeader('application/json')
+
+if(widget_data.widgetKey == nil) then
+   reportError("Missing widget_key parameter")
+   return
+end
+
+local widget = widget_utils.get_widget(widget_data.widgetKey)
+if (widget == nil) then
+    reportError("The requested widget was not found")
+    return
+end
+
+-- Generate the widget response
+print(widget_utils.generate_response(widget, widget_data))