add logger

jcouyang · Aug 30, 2020 · b2c3e3f · b2c3e3f
1 parent bcbb265
commit b2c3e3f
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Showing 3 changed files with 17 additions and 3 deletions.
diff --git a/src/main/scala/com/your/domain/http4sexample/resource/logger.scala b/src/main/scala/com/your/domain/http4sexample/resource/logger.scala
@@ -0,0 +1,11 @@
+package com.your.domain.http4sexample
+package resource
+
+import cats.Show
+import cats.syntax.all._
+import com.twitter.logging.Logger
+
+trait HasLogger {
+  def logInfo[A: Show](text: A)(implicit logger: Logger): App[Unit] =
+    logger.info(text.show).pure[App]
+}
diff --git a/src/main/scala/com/your/domain/http4sexample/resource/package.scala b/src/main/scala/com/your/domain/http4sexample/resource/package.scala
@@ -2,7 +2,7 @@ package com.your.domain.http4sexample
 
 import cats.effect._
 
-trait AppResource extends HasConfig with resource.HasClient with resource.HasDatabase
+trait AppResource extends HasConfig with resource.HasClient with resource.HasDatabase with resource.HasLogger
 
 package object resource {
   def mk(implicit ctx: ContextShift[IO]): Resource[IO, AppResource] =

diff --git a/src/main/scala/com/your/domain/http4sexample/route/joke.scala b/src/main/scala/com/your/domain/http4sexample/route/joke.scala
@@ -12,8 +12,10 @@ import io.circe.generic.auto._
 import java.time.Instant
 import java.time.ZonedDateTime
 import java.time.ZoneId
+import com.twitter.logging.Logger
 
 object Joke {
+  implicit val log = Logger.get
   case class Joke(joke: String)
   val random = AppRoute {
     case GET -> Root / "random-joke" =>
@@ -37,13 +39,14 @@ object Joke {
   val CRUD = AppRoute {
     case req @ POST -> Root / "joke" =>
       for {
-        db <- Kleisli.ask[IO, HasDatabase]
+        has <- Kleisli.ask[IO, HasDatabase with HasLogger]
         joke <- Kleisli.liftF(req.as[Repr.Create])
-        id <- db.transact(run(quote {
+        id <- has.transact(run(quote {
           query[Dao.Joke]
             .insert(_.text -> lift(joke.text))
             .returningGenerated(_.id)
         }))
+        _ <- has.logInfo(s"created joke with id $id")
         resp <- Created(id)
       } yield resp