Rego Built-in Function: time.parse_ns
time.parse_ns
is Rego's built-in function that parses a string into
a timestamp in nanoseconds since the Unix epoch.
This is useful converting input data to a format that can be compared with
other timestamps or used in time calculations.
Examples
Check if a time is within a period
In order to check if a time is in a period of time, we need to know the start and the end of the period first. This policy defines two dates in time to mark the start and the end of the period, before testing if the supplied time is in the period.
# policy.rego
# 2006-01-02 is the time format string for yyyy-mm-dd
start_date := time.parse_ns("2006-01-02", "1999-01-01")
end_date := time.parse_ns("2006-01-02", "2000-01-01")
parsed_time := time.parse_rfc3339_ns(input.time)
default allow := false
allow if {
parsed_time > start_date
parsed_time < end_date
}
# input.json
{
"time": "1999-07-02T13:14:46.878235008Z"
}
Rule | Output Value | Notes |
---|---|---|
allow | true | The input time is in the year 1999 |