com.twosigma.beakerx.kernel.magic.command.functionality.AsyncMagicCommandOptions.java Source code

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Here is the source code for com.twosigma.beakerx.kernel.magic.command.functionality.AsyncMagicCommandOptions.java

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/*
 *  Copyright 2018 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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.twosigma.beakerx.kernel.magic.command.functionality;

import com.twosigma.beakerx.BeakerXClientManager;
import com.twosigma.beakerx.kernel.magic.command.AsyncOptions;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.ParseException;

import java.util.ArrayList;
import java.util.List;

public class AsyncMagicCommandOptions {

    private AsyncOptions asyncOptions;

    public AsyncMagicCommandOptions() {
        this.asyncOptions = new AsyncOptions();
    }

    public OptionsResult parseOptions(String[] args) {
        CommandLineParser parser = new BasicParser();
        List<AsyncMagicCommand.AsyncOptionCommand> commands = new ArrayList<>();
        try {
            CommandLine cmd = parser.parse(asyncOptions.getOptions(), args);
            if (cmd.hasOption(AsyncOptions.THEN)) {
                commands.add(() -> BeakerXClientManager.get().runByTag(cmd.getOptionValue(AsyncOptions.THEN)));
            }
        } catch (ParseException e) {
            return new ErrorOptionsResult(e.getMessage());
        }
        return new AsyncOptionsResult(commands);
    }

    public interface OptionsResult {
        boolean hasError();

        String errorMsg();

        List<AsyncMagicCommand.AsyncOptionCommand> options();
    }

    private class ErrorOptionsResult implements OptionsResult {
        private String error;

        public ErrorOptionsResult(String error) {
            this.error = error;
        }

        @Override
        public boolean hasError() {
            return true;
        }

        @Override
        public String errorMsg() {
            return error;
        }

        @Override
        public List<AsyncMagicCommand.AsyncOptionCommand> options() {
            return new ArrayList<>();
        }
    }

    private class AsyncOptionsResult implements OptionsResult {
        private List<AsyncMagicCommand.AsyncOptionCommand> sparkOptions;

        public AsyncOptionsResult(List<AsyncMagicCommand.AsyncOptionCommand> sparkOptions) {
            this.sparkOptions = sparkOptions;
        }

        @Override
        public boolean hasError() {
            return false;
        }

        @Override
        public String errorMsg() {
            return "";
        }

        @Override
        public List<AsyncMagicCommand.AsyncOptionCommand> options() {
            return sparkOptions;
        }
    }
}