Class: Google::Protobuf::Duration

Inherits:

Object

Object
Google::Protobuf::Duration

show all

Defined in:: lib/google/cloud/logging/v2/doc/google/protobuf/duration.rb

Overview

A Duration represents a signed, fixed-length span of time represented as a count of seconds and fractions of seconds at nanosecond resolution. It is independent of any calendar and concepts like "day" or "month". It is related to Timestamp in that the difference between two Timestamp values is a Duration and it can be added or subtracted from a Timestamp. Range is approximately +-10,000 years.

Example 1: Compute Duration from two Timestamps in pseudo code.

Timestamp start = ...;
Timestamp end = ...;
Duration duration = ...;

duration.seconds = end.seconds - start.seconds;
duration.nanos = end.nanos - start.nanos;

if (duration.seconds < 0 && duration.nanos > 0) {
  duration.seconds += 1;
  duration.nanos -= 1000000000;
} else if (durations.seconds > 0 && duration.nanos < 0) {
  duration.seconds -= 1;
  duration.nanos += 1000000000;
}

Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.

Timestamp start = ...;
Duration duration = ...;
Timestamp end = ...;

end.seconds = start.seconds + duration.seconds;
end.nanos = start.nanos + duration.nanos;

if (end.nanos < 0) {
  end.seconds -= 1;
  end.nanos += 1000000000;
} else if (end.nanos >= 1000000000) {
  end.seconds += 1;
  end.nanos -= 1000000000;
}

Example 3: Compute Duration from datetime.timedelta in Python.

td = datetime.timedelta(days=3, minutes=10)
duration = Duration()
duration.FromTimedelta(td)

Instance Attribute Summary collapse

#nanos ⇒ Integer
Signed fractions of a second at nanosecond resolution of the span of time.
#seconds ⇒ Integer
Signed seconds of the span of time.

Instance Attribute Details

#nanos ⇒ `Integer`

Returns Signed fractions of a second at nanosecond resolution of the span of time. Durations less than one second are represented with a 0 +seconds+ field and a positive or negative +nanos+ field. For durations of one second or more, a non-zero value for the +nanos+ field must be of the same sign as the +seconds+ field. Must be from -999,999,999 to +999,999,999 inclusive.

Returns:

(Integer) —
Signed fractions of a second at nanosecond resolution of the span of time. Durations less than one second are represented with a 0 +seconds+ field and a positive or negative +nanos+ field. For durations of one second or more, a non-zero value for the +nanos+ field must be of the same sign as the +seconds+ field. Must be from -999,999,999 to +999,999,999 inclusive.

75	# File 'lib/google/cloud/logging/v2/doc/google/protobuf/duration.rb', line 75 class Duration; end

#seconds ⇒ `Integer`

Returns Signed seconds of the span of time. Must be from -315,576,000,000 to +315,576,000,000 inclusive.