kafka.utils.CommandLineUtils.scala Maven / Gradle / Ivy

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
 package kafka.utils

import joptsimple.{OptionSpec, OptionSet, OptionParser}

/**
 * Helper functions for dealing with command line utilities
 */
object CommandLineUtils extends Logging {

    def checkRequiredArgs(parser: OptionParser, options: OptionSet, required: OptionSpec[_]*) {
      for(arg <- required) {
        if(!options.has(arg)) {
          error("Missing required argument \"" + arg + "\"")
          parser.printHelpOn(System.err)
          System.exit(1)
        }
      }
    }
  
}