telegraf/plugins/parsers/csv/README.md

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# CSV
The `csv` parser creates metrics from a document containing comma separated
values.
### Configuration
```toml
[[inputs.file]]
files = ["example"]
## Data format to consume.
## Each data format has its own unique set of configuration options, read
## more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "csv"
## Indicates how many rows to treat as a header. By default, the parser assumes
## there is no header and will parse the first row as data. If set to anything more
## than 1, column names will be concatenated with the name listed in the next header row.
## If `csv_column_names` is specified, the column names in header will be overridden.
csv_header_row_count = 0
## For assigning custom names to columns
## If this is specified, all columns should have a name
## Unnamed columns will be ignored by the parser.
## If `csv_header_row_count` is set to 0, this config must be used
csv_column_names = []
## For assigning explicit data types to columns.
## Supported types: "int", "float", "bool", "string".
## If this is not specified, type conversion will be done on the types above.
csv_column_types = []
## Indicates the number of rows to skip before looking for header information.
csv_skip_rows = 0
## Indicates the number of columns to skip before looking for data to parse.
## These columns will be skipped in the header as well.
csv_skip_columns = 0
## The seperator between csv fields
## By default, the parser assumes a comma (",")
csv_delimiter = ","
## The character reserved for marking a row as a comment row
## Commented rows are skipped and not parsed
csv_comment = ""
## If set to true, the parser will remove leading whitespace from fields
## By default, this is false
csv_trim_space = false
## Columns listed here will be added as tags. Any other columns
## will be added as fields.
csv_tag_columns = []
## The column to extract the name of the metric from
csv_measurement_column = ""
## The column to extract time information for the metric
## `csv_timestamp_format` must be specified if this is used
csv_timestamp_column = ""
## The format of time data extracted from `csv_timestamp_column`
## this must be specified if `csv_timestamp_column` is specified
csv_timestamp_format = ""
```
#### csv_timestamp_column, csv_timestamp_format
By default the current time will be used for all created metrics, to set the
time using the JSON document you can use the `csv_timestamp_column` and
`csv_timestamp_format` options together to set the time to a value in the parsed
document.
The `csv_timestamp_column` option specifies the column name containing the
time value and `csv_timestamp_format` must be set to a Go "reference time"
which is defined to be the specific time: `Mon Jan 2 15:04:05 MST 2006`.
Consult the Go [time][time parse] package for details and additional examples
on how to set the time format.
### Metrics
One metric is created for each row with the columns added as fields. The type
of the field is automatically determined based on the contents of the value.
### Examples
Config:
```
[[inputs.file]]
files = ["example"]
data_format = "csv"
csv_header_row_count = 1
csv_timestamp_column = "time"
csv_timestamp_format = "2006-01-02T15:04:05Z07:00"
```
Input:
```
measurement,cpu,time_user,time_system,time_idle,time
cpu,cpu0,42,42,42,2018-09-13T13:03:28Z
```
Output:
```
cpu cpu=cpu0,time_user=42,time_system=42,time_idle=42 1536869008000000000
```