Avro Marshallers for Date and Timestamp

It’d be handy to have frees-rpc providing optional marshallers for serializing and deserializing dates, with no reference to a particular time zone or time of day.

Avro specs: https://avro.apache.org/docs/current/spec.html#Date

Initially, we could support:

Date

The date logical type represents a date within the calendar, with no reference to a particular time zone or time of day.

Timestamp (millisecond precision)

The timestamp-millis logical type represents an instant on the global timeline, independent of a particular time zone or calendar, with a precision of one millisecond.

As we need to take into account Java 1.7, we could create two new different sbt modules (artifacts):

• frees-rpc-marshallers-jodatime: Java 1.7 users could include this one to serialize/deserialize dates based on:
  • Avro date: it can be managed by org.joda.time.LocalDate.
  • Avro timestamp-millis: it can be managed by org.joda.time.LocalDateTime.
• frees-rpc-marshallers-javatime: Java +1.8 users could include this one to serialize/deserialize dates based on
  • Avro date: it can be managed by java.time.LocalDate.
  • Avro timestamp-millis: it can be managed by java.time.LocalDateTime.

These two new modules can be placed at modules/marshallers/jodatime and modules/marshallers/javatime, respectively.

Internally, as part of the serialization/deserialization process, we can use Long as intermediate bytes representation.

[fedefernandez]

IMO it’s completed

[juanpedromoreno]

@fedefernandez @AntonioMateoGomez Do we need to do something else to complete this story? I think it might be completed after https://github.com/frees-io/freestyle-rpc/pull/373 and https://github.com/frees-io/freestyle-rpc/pull/374.