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/*
* ============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=========================================================
*/
package org.onap.dcae.collectors.veshv.commandline
import arrow.core.Option
import org.apache.commons.cli.HelpFormatter
import org.apache.commons.cli.Options
data class WrongArgumentError(
val message: String,
val cause: Throwable? = null,
val cmdLineOptionsList: List<CommandLineOption>) {
constructor(par: Throwable, cmdLineOptionsList: List<CommandLineOption>) :
this(par.message ?: "",
par,
cmdLineOptionsList)
fun printMessage() {
println(message)
}
fun printHelp(programName: String) {
val formatter = HelpFormatter()
val footer = "All parameters can be specified as environment variables using upper-snake-case full " +
"name with prefix `VESHV_`."
formatter.printHelp(
programName,
generateRequiredParametersNote(cmdLineOptionsList),
getOptions(),
footer)
}
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 }
.joinToString(prefix = "Required parameters: ", separator = ", ")
}
)
}
}
}
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