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javakotlintimestamprfc3339

Convert zoned timestamp to com.google.protobuf.Timestamp

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.

Solution

  • 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