2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018-2019 NOKIA
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.dcae.collectors.veshv.commandline
22 import arrow.core.Option
23 import org.apache.commons.cli.HelpFormatter
24 import org.apache.commons.cli.Options
27 data class WrongArgumentError(
29 val cause: Throwable? = null,
30 val cmdLineOptionsList: List<CommandLineOption>) {
32 constructor(par: Throwable, cmdLineOptionsList: List<CommandLineOption>) :
33 this(par.message ?: "",
41 fun printHelp(programName: String) {
42 val formatter = HelpFormatter()
43 val footer = "All parameters can be specified as environment variables using upper-snake-case full " +
44 "name with prefix `VESHV_`."
48 generateRequiredParametersNote(cmdLineOptionsList),
53 private fun getOptions() = cmdLineOptionsList.map { it.option }.fold(Options(), Options::addOption)
56 fun generateRequiredParametersNote(cmdLineOptionsList: List<CommandLineOption>): String {
57 val requiredParams = Option.fromNullable(cmdLineOptionsList.filter { it.required }
58 .takeUnless { it.isEmpty() })
59 return requiredParams.fold(
62 it.map { commandLineOption -> commandLineOption.option.opt }
63 .joinToString(prefix = "Required parameters: ", separator = ", ")