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Fluent Bit Go!

This repository contains Go packages that allows to create Fluent Bit plugins. At the moment it only supports the creation of Output and Input plugins.

Requirements

The code of this package for output plugin is intended to be used with Fluent Bit v1.4 branch or higher.

The code of this package for input plugin is intended to be used with Fluent Bit v1.9 branch or higher.

Usage

Fluent Bit Go packages are exposed on this repository:

github.com/fluent/fluent-bit-go

Creating Output Plugin

When creating a Fluent Bit Output plugin, the output package can be used as follows:

import "github.com/fluent/fluent-bit-go/output"

For a more practical example please refer to the out_multiinstance plugin implementation located at:

Creating Input Plugin

When creating a Fluent Bit Input plugin, the input package can be used as follows:

import "github.com/fluent/fluent-bit-go/input"

Config key constraint

Some config keys are used/overwritten by Fluent Bit and can't be used by a custom plugin, they are:

Property Input Output
alias X X
host X X
ipv6 X X
listen X
log_level X X
log_suppress_interval X
match X
match_regex X
mem_buf_limit X X
port X X
retry_limit X
routable X X
storage.pause_on_chunks_overlimit X X
storage.total_limit_size X
storage.type X X
tag X X
threaded X X
tls X X
tls.ca_file X X
tls.ca_path X X
tls.crt_file X X
tls.debug X X
tls.key_file X X
tls.key_passwd X X
tls.verify X X
tls.vhost X X
workers X

This implies that if your plugin depends on property like listen you can use on output plugin but not on input plugin, host don't work on both, rather than this custom key like address work on both.

[OUTPUT]
    Name   my_output_plugin
    Listen something # work
    Host # don't work
    Address # work
[INPUT]
    Name   my_input_plugin
    Listen something #don't work
    Host localhost # don't work
    Address # work

Contact

Feel free to join us on our Slack channel, Mailing List, IRC or Twitter:

Authors

Fluent Bit Go is made and sponsored by Treasure Data among other contributors.