Get rid of arrow-effects usage

Also clean-up dependencies + use Kotlin BOM to force single
kotlin-stdlib on classpath.

Issue-ID: DCAEGEN2-1392
Change-Id: I447c4686707de81f35f7734255ce0b13c997c4a4
Signed-off-by: Piotr Jaszczyk <piotr.jaszczyk@nokia.com>

5 files changed, 44 insertions, 58 deletions

diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt
index 47b3d559..cfed7f32 100644
--- a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/core.kt
@@ -23,16 +23,11 @@ import arrow.core.Either
 import arrow.core.ForOption
 import arrow.core.Option
 import arrow.core.Try
+import arrow.core.extensions.option.monad.monad
 import arrow.core.fix
 import arrow.core.identity
-import arrow.effects.ForIO
-import arrow.effects.IO
-import arrow.effects.fix
-import arrow.effects.instances.io.monad.monad
-import arrow.instances.option.monad.monad
 import arrow.syntax.collections.firstOption
 import arrow.typeclasses.MonadContinuation
-import arrow.typeclasses.binding
 import reactor.core.publisher.Flux
 import reactor.core.publisher.Mono
 import java.util.concurrent.atomic.AtomicReference
@@ -47,11 +42,6 @@ object OptionUtils {
             : Option<A> = Option.monad().binding(c).fix()
 }
 
-object IOUtils {
-    fun <A> binding(c: suspend MonadContinuation<ForIO, *>.() -> A)
-            : IO<A> = IO.monad().binding(c).fix()
-}
-
 fun <A> Either<A, A>.flatten() = fold(::identity, ::identity)
 
 fun <B> Either<Throwable, B>.rightOrThrow() = fold({ throw it }, ::identity)
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Marker.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Marker.kt
index 9023528e..ac39100d 100644
--- a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Marker.kt
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/logging/Marker.kt
@@ -28,7 +28,8 @@ sealed class Marker(internal val slf4jMarker: org.slf4j.Marker, val mdc: Map<Str
     object Entry : Marker(ENTRY)
     object Exit : Marker(EXIT)
 
-    class Invoke(id: UUID = UUID.randomUUID(), timestamp: Instant = Instant.now()) : Marker(INVOKE, mdc(id, timestamp)) {
+    class Invoke(id: UUID = UUID.randomUUID(), timestamp: Instant = Instant.now()) :
+            Marker(INVOKE, mdc(id, timestamp)) {
         companion object {
             private fun mdc(id: UUID, timestamp: Instant) = mapOf(
                     OnapMdc.INVOCATION_ID to id.toString(),
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/effects.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/process/process.kt
index 56825221..58859462 100644
--- a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/effects.kt
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/process/process.kt
@@ -17,16 +17,8 @@
  * limitations under the License.
  * ============LICENSE_END=========================================================
  */
-package org.onap.dcae.collectors.veshv.utils.arrow
+package org.onap.dcae.collectors.veshv.utils.process
 
-import arrow.core.Either
-import arrow.core.Left
-import arrow.core.Right
-import arrow.effects.IO
-import org.reactivestreams.Publisher
-import reactor.core.publisher.Flux
-import reactor.core.publisher.Mono
-import reactor.core.publisher.toMono
 import kotlin.system.exitProcess
 
 /**
@@ -37,9 +29,8 @@ import kotlin.system.exitProcess
 sealed class ExitCode {
     abstract val code: Int
 
-    fun io() = IO {
-        exitProcess(code)
-    }
+    fun doExit(): Nothing = exitProcess(code)
+
 }
 
 object ExitSuccess : ExitCode() {
@@ -47,33 +38,3 @@ object ExitSuccess : ExitCode() {
 }
 
 data class ExitFailure(override val code: Int) : ExitCode()
-
-inline fun <A, B> Either<IO<A>, IO<B>>.unsafeRunEitherSync(onError: (Throwable) -> ExitCode, onSuccess: () -> Unit) =
-        flatten().attempt().unsafeRunSync().fold({ onError(it).io().unsafeRunSync() }, { onSuccess() })
-
-fun IO<Any>.unit() = map { Unit }
-
-fun <T> Mono<T>.asIo() = IO.async<T> { callback ->
-    subscribe({
-        callback(Right(it))
-    }, {
-        callback(Left(it))
-    })
-}
-
-fun <T> Publisher<T>.then(callback: () -> Unit): Mono<Unit> =
-        toMono().then(Mono.fromCallable(callback))
-
-fun <T> Flux<IO<T>>.evaluateIo(): Flux<T> =
-        flatMap { io ->
-            io.attempt().unsafeRunSync().fold(
-                    { Flux.error<T>(it) },
-                    { Flux.just<T>(it) }
-            )
-        }
-
-inline fun <T> IO<T>.then(crossinline block: (T) -> Unit): IO<T> =
-        map {
-            block(it)
-            it
-        }
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/rx/rx.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/rx/rx.kt
new file mode 100644
index 00000000..ceccbcba
--- /dev/null
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/rx/rx.kt
@@ -0,0 +1,33 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018-2019 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since June 2018
+ */
+package org.onap.dcae.collectors.veshv.utils.rx
+
+import org.reactivestreams.Publisher
+import reactor.core.publisher.Mono
+import reactor.core.publisher.toMono
+
+fun <T> Publisher<T>.then(callback: () -> Unit): Mono<Unit> =
+        toMono().then(Mono.fromCallable(callback))
diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
index 670ab4ac..728d62bb 100644
--- a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
@@ -19,7 +19,6 @@
  */
 package org.onap.dcae.collectors.veshv.utils
 
-import arrow.effects.IO
 import org.onap.dcae.collectors.veshv.utils.logging.Logger
 import reactor.core.publisher.Mono
 import reactor.netty.DisposableServer
@@ -29,7 +28,7 @@ import reactor.netty.DisposableServer
  * @since August 2018
  */
 abstract class ServerHandle(val host: String, val port: Int) : Closeable {
-    abstract fun await(): IO<Unit>
+    abstract fun await(): Mono<Void>
 }
 
 /**
@@ -58,8 +57,10 @@ class NettyServerHandle(private val ctx: DisposableServer,
                 }
             }
 
-    override fun await() = IO<Unit> {
-        ctx.channel().closeFuture().sync()
+    override fun await(): Mono<Void> = Mono.create { callback ->
+        ctx.channel().closeFuture().addListener {
+            callback.success()
+        }
     }
 
     companion object {