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Csv output plugin v3.0.9

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Csv output plugin v3.0.9

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Plugin version: v3.0.9
Released on: 2023-06-14
Changelog

For other versions, see the overview list.

To learn more about Logstash, see the Logstash Reference.

Getting help

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For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.

Description

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CSV output.

Write events to disk in CSV or other delimited format Based on the file output, many config values are shared Uses the Ruby csv library internally

Csv Output Configuration Options

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This plugin supports the following configuration options plus the Common options described later.

Setting	Input type	Required
`create_if_deleted`	boolean	No
`csv_options`	hash	No
`dir_mode`	number	No
`fields`	array	Yes
`file_mode`	number	No
`filename_failure`	string	No
`flush_interval`	number	No
`gzip`	boolean	No
`path`	string	Yes
`spreadsheet_safe`	boolean	No

Also see Common options for a list of options supported by all output plugins.

`create_if_deleted`

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Value type is boolean
Default value is true

If the configured file is deleted, but an event is handled by the plugin, the plugin will recreate the file. Default ⇒ true

`csv_options`

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Value type is hash
Default value is {}

Options for CSV output. This is passed directly to the Ruby stdlib to_csv function. Full documentation is available on the Ruby CSV documentation page. A typical use case would be to use alternative column or row separators eg: csv_options => {"col_sep" => "\t" "row_sep" => "\r\n"} gives tab separated data with windows line endings

`dir_mode`

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Value type is number
Default value is -1

Dir access mode to use. Note that due to the bug in jruby system umask is ignored on linux: https://github.com/jruby/jruby/issues/3426 Setting it to -1 uses default OS value. Example: "dir_mode" => 0750

`fields`

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This is a required setting.
Value type is array
There is no default value for this setting.

The field names from the event that should be written to the CSV file. Fields are written to the CSV in the same order as the array. If a field does not exist on the event, an empty string will be written. Supports field reference syntax eg: fields => ["field1", "[nested][field]"].

`file_mode`

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Value type is number
Default value is -1

File access mode to use. Note that due to the bug in jruby system umask is ignored on linux: https://github.com/jruby/jruby/issues/3426 Setting it to -1 uses default OS value. Example: "file_mode" => 0640

`filename_failure`

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Value type is string
Default value is "_filepath_failures"

If the generated path is invalid, the events will be saved into this file and inside the defined path.

`flush_interval`

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Value type is number
Default value is 2

Flush interval (in seconds) for flushing writes to log files. 0 will flush on every message.

`gzip`

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Value type is boolean
Default value is false

Gzip the output stream before writing to disk.

`path`

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This is a required setting.
Value type is string
There is no default value for this setting.

This output writes events to files on disk. You can use fields from the event as parts of the filename and/or path.

By default, this output writes one event per line in json format. You can customise the line format using the line codec like:

output {
 file {
   path => ...
   codec => line { format => "custom format: %{message}"}
 }
}

The path to the file to write. Event fields can be used here, like /var/log/logstash/%{host}/%{application} One may also utilize the path option for date-based log rotation via the joda time format. This will use the event timestamp. E.g.: path => "./test-%{+YYYY-MM-dd}.txt" to create ./test-2013-05-29.txt

If you use an absolute path you cannot start with a dynamic string. E.g: /%{myfield}/, /test-%{myfield}/ are not valid paths

`spreadsheet_safe`

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Value type is boolean
Default value is true

Option to not escape/munge string values. Please note turning off this option may not make the values safe in your spreadsheet application

Common options

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These configuration options are supported by all output plugins:

Setting	Input type	Required
`codec`	codec	No
`enable_metric`	boolean	No
`id`	string	No

`codec`

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Value type is codec
Default value is "plain"

The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.

`enable_metric`

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Value type is boolean
Default value is true

Disable or enable metric logging for this specific plugin instance. By default we record all the metrics we can, but you can disable metrics collection for a specific plugin.

`id`

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Value type is string
There is no default value for this setting.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one. It is strongly recommended to set this ID in your configuration. This is particularly useful when you have two or more plugins of the same type. For example, if you have 2 csv outputs. Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

output {
  csv {
    id => "my_plugin_id"
  }
}

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