ARP Map (#2540)

* arp matrix graph and fix

* bug fix

* graph fix

* bug fix

* tests on arp graph

* merged heatmap.js and map.js

* graph dinamic resize

* minor fix

* graph dinamic width

* graph performance improvement

* clean code

* fix manual refresh

* message for empty graph

* clean code

* more clean

* update arpMap and host details

* migrate to v4.min version of d3.js

scripts/lua/modules/arp_matrix_utils.lua

@@ -0,0 +1,44 @@
+--
+-- (C) 2013-19 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+require "lua_utils"
+
+local matrix = interface.getArpStatsMatrixInfo()
+local arpMatrixModule = {}
+
+function arpMatrixModule.arpCheck(host_ip)
+    if not (matrix and host_ip) then return false end
+    local req_num = 0;
+    local talkers_num = 0;
+
+    if (matrix and host_ip)  then 
+
+        for _, m_elem in pairs(matrix) do
+            for i, stats in pairs(m_elem)do
+                tmp = split(i,"-")
+                src_ip = tmp[1]
+                dst_ip = tmp[2]
+
+                if  ((stats["src2dst.requests"] > 0) and (src_ip == host_ip)) or
+                    ((stats["dst2src.requests"] > 0) and (dst_ip == host_ip))then
+                    
+                return true
+                end
+            end
+        end
+
+    end
+    return false
+ end
+
+
+return arpMatrixModule
+
+
+
+
+
+