Convert zoned timestamp to com.google.protobuf.Timestamp

Question

In my custom API that I am creating using Swagger, I need to input a timestamp.

In my YAML file I have defined the format of my input parameter as date-time as mentioned on the Swagger webpage date-time – the date-time notation as defined by RFC 3339, section 5.6, for example, 2017-07-21T17:32:28Z

I want to convert the resulting zoned timestamp to com.google.protobuf.Timestamp but I don´t know how to do that and need help. I am using Kotlin.

So far I´ve tried implementing some of the Java examples from StackOverflow (after converting to Kotlin), for instance:

System.out.println(new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX")
        .format(new Date()));

and

LocalDateTime withoutTimezone = zoneDateTime.toLocalDateTime();
Timestamp timestamp = Timestamp.valueOf(withoutTimezone));

None of the examples seem to work since I need input parameter in com.google.protobuf.Timestamp format, which the above examples do not result in.

Any help would be appreciated regarding how to convert timestamp.

Have you tried anything? Can you show it what you have tried? — deHaar, Aug 27 '20 at 14:20

score 1 · Accepted Answer · answered Aug 27 '20 at 18:17

I haven’t tested, but from reading the com.google.protobuf.Timestamp documentation this seems to be an option:

    String exampleInput = "2020-08-27T20:13:10+02:00";
    Instant javaTimeInstant = OffsetDateTime.parse(exampleInput).toInstant();
    com.google.protobuf.Timestamp ts = com.google.protobuf.Timestamp.newBuilder()
           .setSeconds(javaTimeInstant.getEpochSecond())
           .setNanos(javaTimeInstant.getNano())
           .build();

I am using Java. You can probably hand translate to Kotlin yourself?

Documentation link: com.google.protobuf.Timestamp

Convert zoned timestamp to com.google.protobuf.Timestamp

1 Answers1