example of using Lua to create a 2 events from one

Author: mp3monster

extras/fluentbit/lua-multi-event/advanced.lua

@@ -0,0 +1,34 @@
+local function printDetails(record, indent)
+  -- this function can be used recursively so we can count nested elements
+  local counter = 0
+  for key, value in pairs(record) do
+    local elementType = type(value)
+    if (elementType == "table") then
+      print(string.format("table %s { %s = ", indent, key))
+      printDetails(value, indent .. " ")
+      print("}")
+    else
+      print(string.format("%s %s = %s --> %s", indent, key, tostring(value), elementType))
+    end
+  end
+end
+
+-- perform a deep copy if the received parameter is a table
+function copy(obj)
+  if type(obj) ~= 'table' then return obj end
+  local res = {}
+  for k, v in pairs(obj) do res[copy(k)] = copy(v) end
+  return res
+end
+
+function cb_advanced(tag, timestamp, record)
+  local code = 1
+  print("Lua script - ", tag, "  ", timestamp, " record is a", type(record))
+  -- printDetails(record, "")
+  record1 = copy(record)
+  record2 = copy(record)
+  record2["BLAHH"] = "piiiinnnnnnnggggggggg"
+  record1["remoteuser"] = "another user"
+  newRecord = { record1, record2 }
+  return code, timestamp, newRecord
+end

extras/fluentbit/lua-multi-event/lua-advanced.conf

@@ -0,0 +1,19 @@
+[SERVICE]
+  flush 1
+
+[INPUT]
+    name dummy
+    dummy {   "time": "12/May/2023:08:05:52 +0000",   "remote_ip": "10.4.72.163",   "remoteuser": "-",   "request": {     "verb": "GET",     "path": " /downloads/product_2",     "protocol": "HTTP",     "version": "1.1"   },   "response": 304}
+    samples 1
+    tag dummy1
+
+[FILTER]
+    name lua
+    match *
+    script ./advanced.lua
+    call cb_advanced
+    protected_mode true
+
+[OUTPUT]
+    name stdout
+    match *