Standard Input

The stdin plugin allows to retrieve valid JSON text messages over the standard input interface (stdin). In order to use it, specify the plugin name as the input, e.g:

$ calyptia-fluent-bit -i stdin -o stdout

As input data the stdin plugin recognize the following JSON data formats:

1. { map => val, map => val, map => val }
2. [ time, { map => val, map => val, map => val } ]

A better example to demonstrate how it works will be through a Bash script that generates messages and writes them to Calyptia Calyptia Fluent Bit. Write the following content in a file named test.sh:

#!/bin/sh

while :; do
  echo -n "{\"key\": \"some value\"}"
  sleep 1
done

Give the script execution permission:

$ chmod 755 test.sh

Now lets start the script and Calyptia Calyptia Fluent Bit in the following way:

$ ./test.sh | fluent-bit -i stdin -o stdout
Calyptia Fluent Bit 20.10.03
 

[2016/10/07 21:44:46] [ info] [engine] started
[0] stdin.0: [1475898286, {"key"=>"some value"}]
[1] stdin.0: [1475898287, {"key"=>"some value"}]
[2] stdin.0: [1475898288, {"key"=>"some value"}]
[3] stdin.0: [1475898289, {"key"=>"some value"}]
[4] stdin.0: [1475898290, {"key"=>"some value"}]

Configuration Parameters

The plugin supports the following configuration parameters:

Key	Description	Default
Buffer_Size	Set the buffer size to read data. This value is used to increase buffer size. The value must be according to the Unit Size specification.	16k