How to override one of the default Spanner converters in Spring Cloud GCP

Question

I use spring-cloud-gcp-data-spanner for fetching data from GCP Spanner. One of my tables contains the TIMESTAMP column, which contains date-time in UTC.

Spring Data Cloud Data already has some default Spanner converters for some custom types. My entity class maps TIMESTAMP (com.google.cloud.Timestamp) column to LocalDateTime.

It uses default TIMESTAMP_LOCAL_DATE_TIME_CONVERTER and converts date-time according to my local zone (UTC+3). I added my custom converter and specified it using ConverterAwareMappingSpannerEntityProcessor, but my custom converter isn't used and appears at the end of the converters list (GenericConversionService#converters).

public class LocalDateTimeReadConverter implements Converter<com.google.cloud.Timestamp, LocalDateTime> {

  @Nullable
  @Override
  public LocalDateTime convert(com.google.cloud.Timestamp timestamp) {
    return Instant
        .ofEpochSecond(timestamp.getSeconds(), timestamp.getNanos())
        .atZone(ZoneId.of("UTC"))
        .toLocalDateTime();
  }
}

  @Bean
  public SpannerEntityProcessor spannerConverter(SpannerMappingContext mappingContext) {
    return new ConverterAwareMappingSpannerEntityProcessor(mappingContext,
        List.of(new LocalDateTimeWriteConverter()),
        List.of(new LocalDateTimeReadConverter()));
  }

DB value: 2020-06-18T15:55:09.000Z
Actual value: 2020-06-18T18:55:09.000Z
Expected value: 2020-06-18T15:55:09.000Z

How can I override a default Spanner converter?

Answer 1

This was resolved by https://github.com/spring-cloud/spring-cloud-gcp/pull/2580 which is a fix made by Dmitry S as they mentioned in their deleted answer.