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>

3 files changed, 14 insertions, 16 deletions

diff --git a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/ArgBasedConfiguration.kt b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/ArgBasedConfiguration.kt
index d8c83ea0..4656d46b 100644
--- a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/ArgBasedConfiguration.kt
+++ b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/ArgBasedConfiguration.kt
@@ -36,7 +36,7 @@ abstract class ArgBasedConfiguration<T>(private val parser: CommandLineParser) {
             Try { parseArgumentsArray(args) }
                     .toEither()
                     .mapLeft { WrongArgumentError(it, cmdLineOptionsList) }
-                    .map(this::getConfiguration)
+                    .map(::getConfiguration)
                     .flatMap {
                         it.toEither {
                             WrongArgumentError(
diff --git a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt
index f3749b35..3e4814f8 100644
--- a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt
+++ b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt
@@ -19,7 +19,6 @@
  */
 package org.onap.dcae.collectors.veshv.commandline
 
-import arrow.core.Option
 import org.apache.commons.cli.HelpFormatter
 import org.apache.commons.cli.Options
 
@@ -53,17 +52,15 @@ data class WrongArgumentError(
     private fun getOptions() = cmdLineOptionsList.map { it.option }.fold(Options(), Options::addOption)
 
     companion object {
-        fun generateRequiredParametersNote(cmdLineOptionsList: List<CommandLineOption>): String {
-            val requiredParams = Option.fromNullable(cmdLineOptionsList.filter { it.required }
-                    .takeUnless { it.isEmpty() })
-            return requiredParams.fold(
-                    { "" },
-                    {
-                        it.map { commandLineOption -> commandLineOption.option.opt }
+        fun generateRequiredParametersNote(cmdLineOptionsList: List<CommandLineOption>): String =
+                cmdLineOptionsList.filter { it.required }.let { requiredParams ->
+                    if (requiredParams.isEmpty())
+                        ""
+                    else
+                        requiredParams.map { commandLineOption -> commandLineOption.option.opt }
                                 .joinToString(prefix = "Required parameters: ", separator = ", ")
-                    }
-            )
-        }
+                }
+
     }
 
 }
diff --git a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/extensions.kt b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/extensions.kt
index 48cac69a..6d8ba3ff 100644
--- a/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/extensions.kt
+++ b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/extensions.kt
@@ -21,10 +21,10 @@ package org.onap.dcae.collectors.veshv.commandline
 
 import arrow.core.Option
 import arrow.core.getOrElse
-import arrow.effects.IO
 import arrow.syntax.function.curried
 import org.apache.commons.cli.CommandLine
-import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
+import org.onap.dcae.collectors.veshv.utils.process.ExitCode
+import org.onap.dcae.collectors.veshv.utils.process.ExitFailure
 import org.onap.dcae.collectors.veshv.utils.arrow.fromNullablesChain
 
 /**
@@ -34,10 +34,11 @@ import org.onap.dcae.collectors.veshv.utils.arrow.fromNullablesChain
 
 val handleWrongArgumentErrorCurried = ::handleWrongArgumentError.curried()
 
-fun handleWrongArgumentError(programName: String, err: WrongArgumentError): IO<Unit> = IO {
+fun handleWrongArgumentError(programName: String, err: WrongArgumentError): ExitCode {
     err.printMessage()
     err.printHelp(programName)
-}.flatMap { ExitFailure(2).io() }
+    return ExitFailure(2)
+}
 
 fun CommandLine.longValue(cmdLineOpt: CommandLineOption, default: Long): Long =
         longValue(cmdLineOpt).getOrElse { default }