1 files changed, 56 insertions, 0 deletions
diff --git a/fluent-bit/scripts/test.lua b/fluent-bit/scripts/test.lua
new file mode 100644
index 00000000..91ff2f1a
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+++ b/fluent-bit/scripts/test.lua
@@ -0,0 +1,56 @@
+--[[
+
+   This Lua script provides 3 interfaces or callbacks for filter_lua:
+
+   - cb_print   => Print records to the standard output
+   - cb_drop    => Drop the record
+   - cb_replace => Replace record content with a new table
+
+   The key inside each function is to do a proper handling of the
+   return values. Each function must return 3 values:
+
+      return code, timestamp, record
+
+   where:
+
+   - code     : -1 record must be deleted
+                 0 record not modified, keep the original
+                 1 record was modified, replace timestamp and record.
+                 2 record was modified, replace record and keep timestamp.
+   - timestamp: Unix timestamp with precision (double)
+   - record   : Table with multiple key/val
+
+   Uppon return if code == 1 (modified), then filter_lua plugin
+   will replace the original timestamp and record with the returned
+   values. If code == 0 the original record is kept otherwise if
+   code == -1, the original record will be deleted.
+]]
+
+-- Print record to the standard output
+function cb_print(tag, timestamp, record)
+   output = tag .. ":  [" .. string.format("%f", timestamp) .. ", { "
+
+   for key, val in pairs(record) do
+      output = output .. string.format(" %s => %s,", key, val)
+   end
+   
+   output = string.sub(output,1,-2) .. " }]"
+   print(output)
+
+   -- Record not modified so 'code' return value is 0 (first parameter)
+   return 0, 0, 0
+end
+
+-- Drop the record
+function cb_drop(tag, timestamp, record)
+   return -1, 0, 0
+end
+
+-- Compose a new JSON map and report it
+function cb_replace(tag, timestamp, record)
+   -- Record modified, so 'code' return value (first parameter) is 1
+   new_record = {}
+   new_record["new"] = 12345
+   new_record["old"] = record
+   return 1, timestamp, new_record
+end