com.dimajix.flowman.tools.kernel.Arguments.scala Maven / Gradle / Ivy

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/*
 * Copyright (C) 2018 The Flowman Authors
 *
 * 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.
 */

package com.dimajix.flowman.tools.kernel

import java.io.PrintStream

import scala.collection.JavaConverters._

import org.kohsuke.args4j.CmdLineParser
import org.kohsuke.args4j.Option


class Arguments(args:Array[String]) {
    @Option(name = "-h", aliases=Array("--help"), usage = "show help", help=true)
    var _help: Boolean = false
    @Option(name = "-v", aliases=Array("--version"), usage = "show version", help=true)
    var version: Boolean = false
    @Option(name = "-w", aliases = Array("--workspace"), usage = "workspace root directory", metaVar = "")
    var workspace: String = ""
    @Option(name = "-a", aliases = Array("--address"), usage = "address to listen on", metaVar = "")
    var address: String = ""
    @Option(name = "-p", aliases = Array("--port"), usage = "port to listen on", metaVar = "")
    var port: Int = 8088
    @Option(name = "-X", aliases = Array("--verbose"), usage = "Produce execution output at info level.")
    var infoLogging: Boolean = false
    @Option(name = "-XX", aliases = Array("--debug"), usage = "Produce execution output at debug level.")
    var debugLogging: Boolean = false
    @Option(name = "--conf", usage = "set a Flowman or Spark config", metaVar = "")
    var config: Array[String] = Array()
    @Option(name = "--spark-master", usage = "set the master for Spark", metaVar = "")
    var sparkMaster: String = ""
    @Option(name = "--spark-logging", usage = "set the log level for Spark", metaVar = "")
    var sparkLogging: String = "WARN"
    @Option(name = "--spark-name", usage = "set the Spark application name", metaVar = "")
    var sparkName: String = "Flowman Kernel"

    /**
     * Returns true if a help message is requested
     * @return
     */
    def help : Boolean = _help

    /**
     * Prints a context-aware help message
     */
    def printHelp(out:PrintStream = System.err) : Unit = {
        new CmdLineParser(this).printUsage(out)
        out.println
    }

    parseArgs(args)

    private def parseArgs(args: Array[String]) {
        val parser: CmdLineParser = new CmdLineParser(this)
        parser.parseArgument(args.toList.asJava)
    }
}