Created guice modules for BookService and BookRepository

VassilisSoum · Feb 13, 2021 · 02e7180 · 02e7180
1 parent 0c783b6
commit 02e7180
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Showing 5 changed files with 38 additions and 12 deletions.
diff --git a/src/main/scala/com/bookworm/application/Main.scala b/src/main/scala/com/bookworm/application/Main.scala
@@ -2,9 +2,9 @@ package com.bookworm.application
 
 import cats.effect.{ExitCode, IO, IOApp}
 import com.bookworm.application.books.adapter.api.BookRestApi
-import com.bookworm.application.books.adapter.repository.BookRepositoryImpl
+import com.bookworm.application.books.adapter.repository.{BookRepositoryImpl, BookRepositoryModule}
 import com.bookworm.application.books.adapter.repository.dao.BookDao
-import com.bookworm.application.books.adapter.service.BookServiceImpl
+import com.bookworm.application.books.adapter.service.{BookServiceImpl, BookServiceModule}
 import com.bookworm.application.books.domain.port.inbound.BookService
 import com.bookworm.application.books.domain.port.outbound.BookRepository
 import com.bookworm.application.init.BookwormServer
@@ -26,7 +26,9 @@ object Main extends IOApp {
       .createTransactor[IO]
       .use { resources =>
         val injector = Guice.createInjector(
-          new Module(resources._1)
+          new Module(resources._1),
+          new BookServiceModule[IO],
+          new BookRepositoryModule[IO]
         )
         val httpApp = Logger.httpApp(logHeaders = true, logBody = true)(
           injector.getInstance(Key.get(scalaguice.typeLiteral[BookRestApi[IO]])).getBooks /*<+>*/ .orNotFound
@@ -50,12 +52,6 @@ object Main extends IOApp {
       bind(new TypeLiteral[Sync[IO]] {}).toInstance(implicitly[Sync[IO]])
       bind(classOf[BookDao]).in(Scopes.SINGLETON)
       bind(new TypeLiteral[Transactor[IO]] {}).toInstance(transactor)
-      bind(new TypeLiteral[BookRepository[IO]]() {})
-        .to(new TypeLiteral[BookRepositoryImpl[IO]]() {})
-        .in(Scopes.SINGLETON)
-      bind(new TypeLiteral[BookService[IO]]() {})
-        .to(new TypeLiteral[BookServiceImpl[IO]]() {})
-        .in(Scopes.SINGLETON)
       bind(new TypeLiteral[BookRestApi[IO]] {}).in(Scopes.SINGLETON)
       bind(classOf[java.time.Clock]).toInstance(java.time.Clock.systemUTC())
     }

diff --git a/src/main/scala/com/bookworm/application/books/adapter/repository/BookRepositoryImpl.scala b/src/main/scala/com/bookworm/application/books/adapter/repository/BookRepositoryImpl.scala
@@ -13,8 +13,8 @@ import doobie.implicits._
 import javax.inject.Inject
 import scala.util.{Failure, Success, Try}
 
-//TODO: Create guice module and make this class package private to use only trait
-class BookRepositoryImpl[F[_]: Sync] @Inject() (bookDao: BookDao, transactor: Transactor[F]) extends BookRepository[F] {
+private[repository] class BookRepositoryImpl[F[_]: Sync] @Inject() (bookDao: BookDao, transactor: Transactor[F])
+  extends BookRepository[F] {
 
   override def getBooksForGenre(
     genreId: GenreId,

diff --git a/src/main/scala/com/bookworm/application/books/adapter/repository/BookRepositoryModule.scala b/src/main/scala/com/bookworm/application/books/adapter/repository/BookRepositoryModule.scala
@@ -0,0 +1,14 @@
+package com.bookworm.application.books.adapter.repository
+
+import cats.effect.Sync
+import com.bookworm.application.books.domain.port.outbound.BookRepository
+import com.google.inject.{AbstractModule, Scopes, TypeLiteral}
+import net.codingwell.scalaguice.ScalaModule
+
+class BookRepositoryModule[F[_]: Sync] extends AbstractModule with ScalaModule {
+
+  override def configure(): Unit =
+    bind(new TypeLiteral[BookRepository[F]]() {})
+      .to(new TypeLiteral[BookRepositoryImpl[F]]() {})
+      .in(Scopes.SINGLETON)
+}
diff --git a/src/main/scala/com/bookworm/application/books/adapter/service/BookServiceImpl.scala b/src/main/scala/com/bookworm/application/books/adapter/service/BookServiceImpl.scala
@@ -8,7 +8,8 @@ import com.bookworm.application.books.domain.port.outbound.BookRepository
 
 import javax.inject.Inject
 
-class BookServiceImpl[F[_]: Sync] @Inject() (bookRepository: BookRepository[F]) extends BookService[F] {
+private[service] class BookServiceImpl[F[_]: Sync] @Inject() (bookRepository: BookRepository[F])
+  extends BookService[F] {
 
   def retrieveBooksByGenre(
     genre: GenreId,

diff --git a/src/main/scala/com/bookworm/application/books/adapter/service/BookServiceModule.scala b/src/main/scala/com/bookworm/application/books/adapter/service/BookServiceModule.scala
@@ -0,0 +1,15 @@
+package com.bookworm.application.books.adapter.service
+
+import cats.effect.Sync
+import com.bookworm.application.books.domain.port.inbound.BookService
+import com.google.inject.{AbstractModule, Scopes, TypeLiteral}
+import net.codingwell.scalaguice.ScalaModule
+
+class BookServiceModule[F[_]: Sync] extends AbstractModule with ScalaModule {
+
+  override def configure(): Unit =
+    bind(new TypeLiteral[BookService[F]]() {})
+      .to(new TypeLiteral[BookServiceImpl[F]]() {})
+      .in(Scopes.SINGLETON)
+
+}