edu.cmu.sv.modelinference.eventtool.charting.STEventChartHandler.java Source code

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Here is the source code for edu.cmu.sv.modelinference.eventtool.charting.STEventChartHandler.java

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/**
 * Copyright 2016 Carnegie Mellon University
 *
 * 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 edu.cmu.sv.modelinference.eventtool.charting;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import edu.cmu.sv.modelinference.common.Util;
import edu.cmu.sv.modelinference.common.api.LogHandler;
import edu.cmu.sv.modelinference.common.formats.DataPointCollection;
import edu.cmu.sv.modelinference.common.formats.ValueTrackerProducer;
import edu.cmu.sv.modelinference.common.formats.st.STConfig;
import edu.cmu.sv.modelinference.common.formats.st.STEntry;
import edu.cmu.sv.modelinference.common.formats.st.STParser;
import edu.cmu.sv.modelinference.common.formats.st.STValueTracker;
import edu.cmu.sv.modelinference.common.formats.st.STValueTracker.FIELD;
import edu.cmu.sv.modelinference.common.generators.LogEntryFilter;
import edu.cmu.sv.modelinference.common.parser.LogReader;
import edu.cmu.sv.modelinference.common.parser.SequentialLogReader;

/**
 * @author Kasper Luckow
 *
 */
public class STEventChartHandler implements LogHandler<ValueTrackerProducer<?, DataPointCollection, ?>> {

    private static final Logger logger = LoggerFactory.getLogger(STEventChartHandler.class);
    private static final String FIELD_OPTS_ARG = "field";
    private static final String FLIGHTNAME_OPTS_ARG = "flightname";

    private boolean hasFlightName = false;
    private FIELD trackedField = null;
    private String flightName;
    private final Options cmdOpts;

    private static STEventChartHandler instance = null;

    public static STEventChartHandler getInstance() {
        if (instance == null) {
            instance = new STEventChartHandler();
        }
        return instance;
    }

    private STEventChartHandler() {
        this.cmdOpts = createCmdOptions();
    }

    private Options createCmdOptions() {
        Options options = new Options();

        Option addOpts = Option.builder(FIELD_OPTS_ARG).argName("Field").hasArg()
                //Could make a list here based on values of STValueTracker.FIELD
                .desc("Field to be tracked, e.g., speed").required(true).build();

        Option flightNameOpt = Option.builder(FLIGHTNAME_OPTS_ARG).argName("Flight name").hasArg()
                .desc("Filter out everything but this flight name").required(false).build();

        options.addOption(addOpts);
        options.addOption(flightNameOpt);
        return options;
    }

    @Override
    public String getHandlerName() {
        return STConfig.LOG_CONFIG_NAME;
    }

    @Override
    public ValueTrackerProducer<?, DataPointCollection, ?> process(String logFile, String logType,
            String[] additionalCmdArgs) {
        CommandLineParser parser = new DefaultParser();
        CommandLine cmd = null;
        try {
            cmd = parser.parse(cmdOpts, additionalCmdArgs, false);
        } catch (ParseException exp) {
            logger.error(exp.getMessage());
            System.err.println(exp.getMessage());
            Util.printHelpAndExit(STEventChartHandler.class, cmdOpts);
        }

        try {
            trackedField = FIELD.valueOf(cmd.getOptionValue(FIELD_OPTS_ARG).toUpperCase());
        } catch (Exception exp) {
            logger.error(exp.getMessage());
            System.err.println(exp.getMessage());
            Util.printHelpAndExit(STEventChartHandler.class, cmdOpts);
        }

        if (cmd.hasOption(FLIGHTNAME_OPTS_ARG)) {
            hasFlightName = true;
            flightName = cmd.getOptionValue(FLIGHTNAME_OPTS_ARG); //e.g. USA5596
        }

        LogReader<STEntry> reader = null;
        if (hasFlightName) {
            LogEntryFilter<STEntry> filter = new LogEntryFilter<STEntry>() {
                @Override
                public boolean submitForProcessing(STEntry entry) {
                    if (entry.getCallSign().equals(flightName)) {
                        return true;
                    }
                    return false;
                }
            };
            reader = new SequentialLogReader<>(new STParser(), filter);
        } else
            reader = new SequentialLogReader<>(new STParser());

        return new STValueTracker.STDataPointsGenerator(trackedField, reader);
    }
}