telegraf/plugins/processors/date/README.md

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# Date Processor Plugin
Use the `date` processor to add the metric timestamp as a human readable tag.
A common use is to add a tag that can be used to group by month or year.
A few example usecases include:
1) consumption data for utilities on per month basis
2) bandwith capacity per month
3) compare energy production or sales on a yearly or monthly basis
### Configuration
```toml
[[processors.date]]
## New tag to create
tag_key = "month"
## New field to create (cannot set both field_key and tag_key)
# field_key = "month"
## Date format string, must be a representation of the Go "reference time"
## which is "Mon Jan 2 15:04:05 -0700 MST 2006".
date_format = "Jan"
## If destination is a field, date format can also be one of
## "unix", "unix_ms", "unix_us", or "unix_ns", which will insert an integer field.
# date_format = "unix"
## Offset duration added to the date string when writing the new tag.
# date_offset = "0s"
## Timezone to use when creating the tag or field using a reference time
## string. This can be set to one of "UTC", "Local", or to a location name
## in the IANA Time Zone database.
## example: timezone = "America/Los_Angeles"
# timezone = "UTC"
```
#### timezone
On Windows, only the `Local` and `UTC` zones are available by default. To use
other timezones, set the `ZONEINFO` environment variable to the location of
[`zoneinfo.zip`][zoneinfo]:
```
set ZONEINFO=C:\zoneinfo.zip
```
### Example
```diff
- throughput lower=10i,upper=1000i,mean=500i 1560540094000000000
+ throughput,month=Jun lower=10i,upper=1000i,mean=500i 1560540094000000000
```
[zoneinfo]: https://github.com/golang/go/raw/50bd1c4d4eb4fac8ddeb5f063c099daccfb71b26/lib/time/zoneinfo.zip