# tsv

The `tsv` parser plugin parses the TSV format.

## Parameters

See [Parse Section Configurations](https://docs.fluentd.org/configuration/parse-section).

### `keys`

| type            | default            | version |
| --------------- | ------------------ | ------- |
| array of string | required parameter | 0.14.9  |

The array of names for fields on each line.

### `delimiter`

| type   | default | version |
| ------ | ------- | ------- |
| string | `\t`    | 0.14.0  |

The delimiter (character or string) separating TSV values.

## Example

With this configuration:

```
<parse>
  @type tsv
  keys time,host,req_id,user
  time_key time
</parse>
```

This incoming event:

```
2013/02/28 12:00:00\t192.168.0.1\t111\t-
```

is parsed as:

```
time:
1362020400 (2013/02/28/ 12:00:00)

record:
{
  "host"   : "192.168.0.1",
  "req_id" : "111",
  "user"   : "-"
}
```

If you set `null_value_pattern '-'` in the configuration, `user` field becomes `nil` instead of `"-"`.

If this article is incorrect or outdated, or omits critical information, please [let us know](https://github.com/fluent/fluentd-docs-gitbook/issues?state=open). [Fluentd](http://www.fluentd.org/) is an open-source project under [Cloud Native Computing Foundation (CNCF)](https://cncf.io/). All components are available under the Apache 2 License.