Fluent::Plugin::AutoTypecastFilter 
This plug-in helps to automatically cast and retransmit structured log data flowing through the Fluent network.
Tested dependencies
- fluentd v1.7.0
Installation
gem install fluent-plugin-auto-typecast-filteror
# for `fluent-gem` users:
fluent-gem install fluent-plugin-auto-typecast-filterUsage
Basic usage in fluentd.conf:
<filter any.tag.**>
@type auto_typecast
</filter>
Parameters
| Parameter | Description | Type | Default |
|---|---|---|---|
maxdepth |
Maximum level of nesting that is autocast. If 0 is specified, all nests are targeted. |
Integer | 1 |
ignore_key_regexp |
Regular expression to determine keys that are not subject to processing. | RegExp | nil |
Examples
Case 1:
# CONFIG:
maxdepth 0
# INPUT:
{ 'k': { 'k': { 'k': [ { 'k': {
'k0': 'string',
'k1': '20',
'k2': '1.0',
'k3': 'NULL',
'k4': 'true'
} } ] } } }
# FILTERED OUTPUT:
{ 'k': { 'k': { 'k': [ { 'k': {
'k0': 'string',
'k1': 20,
'k2': 1.0,
'k3': null,
'k4': true
} } ] } } }
Case 2:
# CONFIG:
maxdepth 3
# INPUT:
{ 'k' : {
'k0': [ '10', '20', '30' ],
'k1': { 'k': [ '10', '20', '30' ] }
}
# FILTERED OUTPUT:
{ 'k' : {
'k0': [ 10, 20, 30 ]
'k1': { 'k': [ '10', '20', '30' ] }
}
Case 3:
# CONFIG:
maxdepth 0
ignore_key_regexp /^0$/
# INPUT:
{ 'k': [
[ '10', '20' ], [
[ '100', '200' ], [
[ '1000', '2000' ]
] ] ] }
# FILTERED OUTPUT:
{ 'k': [
[ '10', 20 ], [
[ '100', 200 ], [
[ '1000', 2000 ]
] ] ] }
Case 4:
# CONFIG:
maxdepth 0
ignore_key_regexp /^[a-z]{1}[0-9]{1,}1$/
# INPUT:
{ 'k0001': [ {
'k0000': 'true',
'k0002': {
'j0001': 'null'
} } ] }
# FILTERED OUTPUT:
{ 'k0001': [ {
'k0000': true,
'k0002': {
'j0001': 'null'
} } ] }
Copyright
- Copyright (c) 2019- Shotaro Chiba
- Apache License, Version 2.0