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pipelines: filters: parser: Add a nest_under parameter #1543

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pipelines: filters: parser: Add a nest_under parameter #1543

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pipelines: filters: parser: Add a nest_under parameter
RaJiska Jan 13, 2025
5f04dbd
Remove Reserve_Data duplicatation
RaJiska Jan 18, 2025
d46bd56
Update pipeline/filters/parser.md
RaJiska Jan 18, 2025
282c7d0
Update pipeline/filters/parser.md
RaJiska Jan 18, 2025
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Update pipeline/filters/parser.md
RaJiska Jan 18, 2025
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41 changes: 41 additions & 0 deletions pipeline/filters/parser.md
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ The plugin supports the following configuration parameters:
| Parser | Specify the parser name to interpret the field. Multiple _Parser_ entries are allowed \(one per line\). | |
| Preserve\_Key | Keep original `Key_Name` field in the parsed result. If false, the field will be removed. | False |
| Reserve\_Data | Keep all other original fields in the parsed result. If false, all other original fields will be removed. | False |
| Reserve\_Data | Keep all other original fields in the parsed result. If false, all other original fields will be removed. | False |
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| Nest\_Under | Specify field name to nest parsed records under. | |
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## Getting Started

Expand Down Expand Up @@ -156,3 +158,42 @@ Fluent Bit v2.1.1
[0] dummy.data: [[1687122779.296906553, {}], {"INT"=>"100", "FLOAT"=>"0.5", "BOOL"=>"true", "STRING"=>"This is example", "data"=>"100 0.5 true This is example", "key1"=>"value1", "key2"=>"value2"}]
[0] dummy.data: [[1687122780.297475803, {}], {"INT"=>"100", "FLOAT"=>"0.5", "BOOL"=>"true", "STRING"=>"This is example", "data"=>"100 0.5 true This is example", "key1"=>"value1", "key2"=>"value2"}]
```

### Nest parsed fields

Instead of expanding parsed fields at the root of the object,
you may choose to have them nested under a new field defined by `Nest_Under`:
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```python copy
[SERVICE]
Parsers_File /fluent-bit/etc/parsers.conf

[INPUT]
Name Dummy
Dummy {"log":"error: my error","element":"{\"a\":\"b\",\"c\":{\"x\":\"y\"}}"}
Tag dummy.data

[FILTER]
Name parser
Match dummy.*
Parser json
Key_Name element
Nest_Under parsed

[OUTPUT]
Name stdout
Match *
```

Resulting in the following output:
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```text
$ fluent-bit -c dummy.conf
Fluent Bit v2.1.1
* Copyright (C) 2015-2022 The Fluent Bit Authors
...
...
[0] dummy.data: [[1736759501.208000317, {}], {"parsed"=>{"a"=>"b", "c"=>{"x"=>"y"}}}]
[0] dummy.data: [[1736759502.207935361, {}], {"parsed"=>{"a"=>"b", "c"=>{"x"=>"y"}}}]
[0] dummy.data: [[1736759503.207765898, {}], {"parsed"=>{"a"=>"b", "c"=>{"x"=>"y"}}}]
```