Azure nsg flow logs

[sourabhlangoo (sourabh)]

Hi,
I need to parse azure nsg flow log using logstash version 2.4 but i am unable to find the solution following is the log

Input Log :

{"records":[{"time":"2019-12-06T10:37:14.5140721Z","systemId":"2c002c16-72f3-4dc5-b391-3444c3527434","macAddress":"000D3AF8801A","category":"NetworkSecurityGroupFlowEvent","resourceId":"/SUBSCRIPTIONS/00000000-0000-0000-0000-000000000000/RESOURCEGROUPS/FABRIKAMRG/PROVIDERS/MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/FABRIAKMVM1-NSG","operationName":"NetworkSecurityGroupFlowEvents","properties":{"Version":1,"flows":[{"rule":"DefaultRule_DenyAllInBound","flows":[{"mac":"000D3AF8801A","flowTuples":["1487282421,42.119.146.95,10.1.0.4,51529,5358,T,I,D"]}]},{"rule":"UserRule_default-allow-rdp","flows":[{"mac":"000D3AF8801A","flowTuples":["1487282370,163.28.66.17,10.1.0.4,61771,3389,T,I,A","1487282393,5.39.218.34,10.1.0.4,58596,3389,T,I,A","1487282393,91.224.160.154,10.1.0.4,61540,3389,T,I,A","1487282423,13.76.89.229,10.1.0.4,53163,3389,T,I,A"]}]}]}},{"time":"2019-12-06T10:37:14.5140721Z","systemId":"2c002c16-72f3-4dc5-b391-3444c3527434","macAddress":"000D3AF8801A","category":"NetworkSecurityGroupFlowEvent","resourceId":"/SUBSCRIPTIONS/00000000-0000-0000-0000-000000000000/RESOURCEGROUPS/FABRIKAMRG/PROVIDERS/MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/FABRIAKMVM1-NSG","operationName":"NetworkSecurityGroupFlowEvents","properties":{"Version":1,"flows":[{"rule":"DefaultRule_DenyAllInBound","flows":[{"mac":"000D3AF8801A","flowTuples":["1487282481,195.78.210.194,10.1.0.4,53,1732,U,I,D"]}]},{"rule":"UserRule_default-allow-rdp","flows":[{"mac":"000D3AF8801A","flowTuples":["1487282435,61.129.251.68,10.1.0.4,57776,3389,T,I,A","1487282454,84.25.174.170,10.1.0.4,59085,3389,T,I,A","1487282477,77.68.9.50,10.1.0.4,65078,3389,T,I,A"]}]}]}}]}

**and this is the config filter I am using : **

 filter {
     split { field => "[records]" }
     split { field => "[records][properties][flows]"}
     split { field => "[records][properties][flows][flows]"}
     split { field => "[records][properties][flows][flows][flowTuples]"}

  mutate{
   split => { "[records][resourceId]" => "/"}
   add_field => {"Subscription" => "%{[records][resourceId][2]}"
                 "ResourceGroup" => "%{[records][resourceId][4]}"
                 "NetworkSecurityGroup" => "%{[records][resourceId][8]}"}
   convert => {"Subscription" => "string"}
   convert => {"ResourceGroup" => "string"}
   convert => {"NetworkSecurityGroup" => "string"}
   split => { "[records][properties][flows][flows][flowTuples]" => ","}
   add_field => {
               "unixtimestamp" => "%{[records][properties][flows][flows][flowTuples][0]}"
               "srcIp" => "%{[records][properties][flows][flows][flowTuples][1]}"
               "destIp" => "%{[records][properties][flows][flows][flowTuples][2]}"
               "srcPort" => "%{[records][properties][flows][flows][flowTuples][3]}"
               "destPort" => "%{[records][properties][flows][flows][flowTuples][4]}"
               "protocol" => "%{[records][properties][flows][flows][flowTuples][5]}"
               "trafficflow" => "%{[records][properties][flows][flows][flowTuples][6]}"
               "traffic" => "%{[records][properties][flows][flows][flowTuples][7]}"
                }
   convert => {"unixtimestamp" => "integer"}
   convert => {"srcPort" => "integer"}
   convert => {"destPort" => "integer"}        
  }

  date{
    match => ["unixtimestamp" , "UNIX"]
  }
 }

i am unable to split field => "[records][properties][flows][flows]"
which gives me error : IS OF TYPE HASH in version 2.4

Thanks in advance