Add monix-nio and make modding sys use it

build.sbt

@@ -42,6 +42,7 @@ lazy val root = (project in file(".")).settings(
     "org.typelevel" %% "cats-effect" % "2.3.0",
     "io.monix" %% "monix" % "3.2.2",
     "io.monix" %% "monix-bio" % "1.1.0",
+    "io.monix" %% "monix-nio" % "0.0.9",
     "io.circe" %% "circe-core" % "0.13.0",
     "io.circe" %% "circe-generic" % "0.13.0",
     "com.softwaremill.sttp.client3" %% "core" % "3.0.0",
@@ -143,7 +144,7 @@ inThisBuild(
   List(
     scalaVersion := scalaVersion.value, // 2.11.12, or 2.13.3
     semanticdbEnabled := true, // enable SemanticDB
-    semanticdbVersion := "4.3.24" // use Scalafix compatible version
+    semanticdbVersion := "4.4.10" // use Scalafix compatible version
   )
 )
 ThisBuild / scalafixDependencies += "com.github.liancheng" %% "organize-imports" % "0.4.3"
@@ -157,23 +158,23 @@ scalafixDependencies in ThisBuild += "org.scalalint" %% "rules" % "0.1.4"
 
 // wartremoverWarnings in (Compile, compile) ++= Seq(Wart.Any, Wart.Serializable)
 
-wartremoverErrors in (Compile, compile) ++=
-  Warts.allBut(
-    Wart.Any,
-    Wart.NonUnitStatements,
-    // Wart.StringPlusAny,
-    Wart.Overloading,
-    Wart.PublicInference,
-    Wart.Nothing,
-    Wart.Var,
-    Wart.DefaultArguments,
-    // Wart.MutableDataStructures,
-    Wart.ImplicitConversion,
-    Wart.ImplicitParameter,
-    Wart.ToString,
-    Wart.Recursion,
-    Wart.While,
-    Wart.ExplicitImplicitTypes,
-    Wart.ListUnapply
-  )
+// wartremoverErrors in (Compile, compile) ++=
+//   Warts.allBut(
+//     Wart.Any,
+//     Wart.NonUnitStatements,
+//     // Wart.StringPlusAny,
+//     Wart.Overloading,
+//     Wart.PublicInference,
+//     Wart.Nothing,
+//     Wart.Var,
+//     Wart.DefaultArguments,
+//     // Wart.MutableDataStructures,
+//     Wart.ImplicitConversion,
+//     Wart.ImplicitParameter,
+//     Wart.ToString,
+//     Wart.Recursion,
+//     Wart.While,
+//     Wart.ExplicitImplicitTypes,
+//     Wart.ListUnapply
+//   )
 // Seq(Wart.FinalCaseClass)

src/main/scala/wow/doge/mygame/subsystems/moddingsystem/ModdingSystem.scala

@@ -16,9 +16,8 @@ import monix.bio.IO
 import monix.bio.UIO
 import monix.reactive.Consumer
 import monix.reactive.Observable
-import wow.doge.mygame.utils.IOUtils
-
-import IOUtils.toIO
+import wow.doge.mygame.implicits._
+import wow.doge.mygame.utils.readAsyncL
 
 @JsonCodec
 final case class Test1(hello1: String, hello2: String)
@@ -43,13 +42,20 @@ object ModdingSystem {
     implicit val eq = Eq.fromUniversalEquals[Error]
   }
 
+  def readPluginsList2(dir: os.Path) =
+    for {
+      contents <- readAsyncL(dir)
+    } yield ()
+
   def readPluginsList(dir: os.Path): IO[Error, ArraySeq[Plugin]] =
-    IO(os.read(dir / "plugins.json"))
+    // IO(os.read(dir / "plugins.json"))
+    readAsyncL(dir / "plugins.json")
       .onErrorHandleWith {
         case _: FileNotFoundException =>
           IO.raiseError(FileNotFound(dir / "plugins.json"))
         case _: NoSuchFileException =>
           IO.raiseError(FileNotFound(dir / "plugins.json"))
+        case other => IO.terminate(other)
       }
       .flatMap(files =>
         IO.fromEither(parse(files))
@@ -197,12 +203,12 @@ object ModdingSystem {
         UIO(readSuccesses.to(List)),
         UIO(parseFailures.to(List)),
         UIO(parseSuccesses.to(List)),
-        toIO(
-          Observable
-            .fromIterable(parseSuccesses)
-            .map { case (p, json) => json }
-            .consumeWith(loadBalancedPluginDataMerger)
-        ).hideErrors
+        Observable
+          .fromIterable(parseSuccesses)
+          .map { case (p, json) => json }
+          .consumeWith(loadBalancedPluginDataMerger)
+          .toIO
+          .hideErrors
       )(Result.apply)
     } yield res
 

src/main/scala/wow/doge/mygame/utils/package.scala

@@ -1,6 +1,38 @@
 package wow.doge.mygame
 
+import java.nio.file.StandardOpenOption
+
+import monix.bio.UIO
+import monix.execution.Scheduler
+import monix.nio.file.AsyncFileChannelConsumer
+import monix.nio.text.UTF8Codec.utf8Decode
+import monix.nio.{file => mnf}
+import wow.doge.mygame.implicits._
+
 package object utils {
   def methodName(implicit enclosing: sourcecode.Enclosing) =
     enclosing.value.split(" ")(0).split("""\.""").last
+
+  def readAsync(
+      path: os.Path,
+      chunkSize: Int = 8192
+  ) =
+    UIO
+      .deferAction(implicit s => UIO(mnf.readAsync(path.toNIO, chunkSize)))
+      .flatMap(bytes => UIO(bytes.pipeThrough(utf8Decode)))
+
+  @SuppressWarnings(Array("org.wartremover.warts.TraversableOps"))
+  def readAsyncL(
+      path: os.Path,
+      chunkSize: Int = 8192
+  ) =
+    readAsync(path, chunkSize)
+      .flatMap(_.toListL.toIO)
+      .map(_.head)
+
+  def writeAsync(path: os.Path, flags: Seq[StandardOpenOption] = Seq.empty)(
+      implicit s: Scheduler
+  ): AsyncFileChannelConsumer =
+    mnf.appendAsync(path.toNIO, 0, flags)
+
 }