diff options
Diffstat (limited to 'sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt')
-rw-r--r-- | sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt | 69 |
1 files changed, 69 insertions, 0 deletions
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 new file mode 100644 index 00000000..f3749b35 --- /dev/null +++ b/sources/hv-collector-commandline/src/main/kotlin/org/onap/dcae/collectors/veshv/commandline/WrongArgumentError.kt @@ -0,0 +1,69 @@ +/* + * ============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 = ", ") + } + ) + } + } + +} |