2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 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.utils.commandline
22 import org.apache.commons.cli.CommandLine
23 import org.apache.commons.cli.CommandLineParser
24 import org.apache.commons.cli.Options
26 import java.nio.file.Paths
28 abstract class ArgBasedConfiguration<T>(val parser: CommandLineParser) {
29 abstract val cmdLineOptionsList: List<CommandLineOption>
31 fun parse(args: Array<out String>): T {
32 val commandLineOptions = cmdLineOptionsList.map { it.option }.fold(Options(), Options::addOption)
34 val cmdLine = parser.parse(commandLineOptions, args)
35 return getConfiguration(cmdLine)
36 } catch (ex: Exception) {
37 throw WrongArgumentException(ex, commandLineOptions)
41 protected abstract fun getConfiguration(cmdLine: CommandLine): T
43 protected fun CommandLine.intValue(cmdLineOpt: CommandLineOption): Int =
44 getOptionValue(cmdLineOpt.option.opt).toInt()
46 protected fun CommandLine.intValue(cmdLineOpt: CommandLineOption, default: Int): Int =
47 getOptionValue(cmdLineOpt.option.opt)?.toInt() ?: default
49 protected fun CommandLine.longValue(cmdLineOpt: CommandLineOption): Long =
50 getOptionValue(cmdLineOpt.option.opt).toLong()
52 protected fun CommandLine.longValue(cmdLineOpt: CommandLineOption, default: Long): Long =
53 getOptionValue(cmdLineOpt.option.opt)?.toLong() ?: default
55 protected fun CommandLine.stringValue(cmdLineOpt: CommandLineOption): String =
56 getOptionValue(cmdLineOpt.option.opt)
58 protected fun CommandLine.stringValue(cmdLineOpt: CommandLineOption, default: String): String =
59 getOptionValue(cmdLineOpt.option.opt) ?: default
61 protected fun stringPathToPath(path: String) = Paths.get(File(path).toURI())