[pkg/ottl] Add Epoch Time Parsing Functionality

[Mrod1598]

Component(s)

pkg/ottl

Is your feature request related to a problem? Please describe.

There's currently no easy way to get an epoch time from a value.
here's an example of the best way I've come up with to parse a simple epoch time.

example:

- set(time, Time("1970-01-01T00:00:00.000000+0000", "%Y-%m-%dT%H:%M:%S.%f%z") + Duration(Concat([body["timestamp"], "ms"], "")))

We have to add the duration to the beginning of the epoch to be able to parse the timestamp. So, we are using additional computation to parse the beginning of the epoch's timestamp every time this statement runs.

Describe the solution you'd like

The Time function to take in a float value with a passed in the format of something like s, ms, s.ms, or s.ns.

Describe alternatives you've considered

Alternatively, there could be new functions that were the inverse of the Unix Time functions.

Additional context

No response

[github-actions]

Pinging code owners:

• pkg/ottl: @TylerHelmuth @kentquirk @bogdandrutu @evan-bradley

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[TylerHelmuth]

@Mrod1598 does #27868 solve your issue?

[Mrod1598]

@Mrod1598 does #27868 solve your issue?

Ah, yes sorry missed that one.