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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018 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.main.config
import org.apache.commons.cli.Option
import org.apache.commons.cli.Options
import org.apache.commons.cli.DefaultParser
import org.apache.commons.cli.CommandLine
import org.apache.commons.cli.HelpFormatter
internal object DefaultValues {
const val MESSAGES_AMOUNT = 1
}
/**
* @author Jakub Dudycz <jakub.dudycz@nokia.com>
* @since June 2018
*/
internal object ArgBasedClientConfiguration {
private val OPT_VES_PORT = Option.builder("p")
.longOpt("port")
.required()
.hasArg()
.desc("VesHvCollector port")
.build()
private val OPT_VES_HOST = Option.builder("h")
.longOpt("host")
.required()
.hasArg()
.desc("VesHvCollector host")
.build()
private val OPT_MESSAGES_AMOUNT = Option.builder("m")
.longOpt("messages")
.hasArg()
.desc("Amount of messages to send")
.build()
private val options by lazy {
val options = Options()
options.addOption(OPT_VES_PORT)
options.addOption(OPT_VES_HOST)
options.addOption(OPT_MESSAGES_AMOUNT)
options
}
fun parse(args: Array<out String>): ClientConfiguration {
val parser = DefaultParser()
try {
parser.parse(options, args).run {
return ClientConfiguration(
stringValue(OPT_VES_HOST),
intValue(OPT_VES_PORT),
intValueOrDefault(OPT_MESSAGES_AMOUNT, DefaultValues.MESSAGES_AMOUNT))
}
} catch (ex: Exception) {
throw WrongArgumentException(ex)
}
}
private fun CommandLine.intValueOrDefault(option: Option, default: Int) =
getOptionValue(option.opt)?.toInt() ?: default
private fun CommandLine.intValue(option: Option) =
getOptionValue(option.opt).toInt()
private fun CommandLine.stringValue(option: Option) =
getOptionValue(option.opt)
class WrongArgumentException(parent: Exception) : Exception(parent.message, parent) {
fun printMessage() {
println(message)
}
fun printHelp(programName: String) {
val formatter = HelpFormatter()
formatter.printHelp(programName, options)
}
}
}
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