Scala :Protobuf

Scala :Protobuf

Protobuf file (Like json and xml , protobuf is used to store and transmit data).

Below are some of the advantages of protobuf

1. Scheme is preserved

2. similar to json / xml

3. Cross platform

4. Parsing is faster

5. Compressed

Example :

Pre - Req : Create a new project in scala using sbt

build.sbt

name := "protobuf"

version := "0.1"

scalaVersion := "2.12.7"

PB.targets in Compile := Seq(

  scalapb.gen() -> (sourceManaged in Compile).value

)

PB.protoSources in Test := Seq(file("/src/protobuf/"))

libraryDependencies += "com.thesamet.scalapb" %% "scalapb-runtime" % scalapb.compiler.Version.scalapbVersion % "protobuf"

project_name/project/plugins.sbt

addSbtPlugin("com.thesamet" % "sbt-protoc" % "0.99.18")

libraryDependencies += "com.thesamet.scalapb

src/main/protobuf/person.proto

syntax = "proto3";

message Person {

    string name = 1;

    int32 age = 2;

    Gender gender = 3;

}

enum Gender {

    MALE = 0;

    FEMALE = 1;

}

src/main/Persontest.scala

import com.google.protobuf.ByteString

import java.io.{InputStream, OutputStream}

import person.{Gender, Person}

object Persontest {

  val person = Person(

    name = "User1",

    age = 15,

    gender = Gender.MALE

  )

}