kieker.tools.loggingTimestampConverter.LoggingTimestampConverterTool.java Source code

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Here is the source code for kieker.tools.loggingTimestampConverter.LoggingTimestampConverterTool.java

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/***************************************************************************
 * Copyright 2015 Kieker Project (http://kieker-monitoring.net)
 *
 * 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 kieker.tools.loggingTimestampConverter;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;

import kieker.common.logging.Log;
import kieker.common.logging.LogFactory;
import kieker.tools.AbstractCommandLineTool;
import kieker.tools.util.LoggingTimestampConverter;

/**
 * This tool can be used to convert timestamps.
 * 
 * @author Andre van Hoorn, Nils Christian Ehmke
 * 
 * @since 1.1
 */
public final class LoggingTimestampConverterTool extends AbstractCommandLineTool {

    private static final Log LOG = LogFactory.getLog(LoggingTimestampConverterTool.class);
    private static final String FLAG_TIMESTAMPS_PARAMETER = "t";

    private long[] timestampsLong;

    private LoggingTimestampConverterTool() {
        super(true);
    }

    public static void main(final String[] args) {
        new LoggingTimestampConverterTool().start(args);
    }

    @Override
    protected void addAdditionalOptions(final Options options) {
        final Option option = new Option(FLAG_TIMESTAMPS_PARAMETER, "timestamps", true,
                "List of timestamps (UTC timezone) to convert");
        option.setArgName("timestamp1 ... timestampN");
        option.setRequired(false);
        option.setArgs(Option.UNLIMITED_VALUES);

        options.addOption(option);
    }

    @Override
    protected boolean readPropertiesFromCommandLine(final CommandLine commandLine) {
        final String[] timestampsStr = commandLine.getOptionValues(FLAG_TIMESTAMPS_PARAMETER);
        if ((timestampsStr == null) || (timestampsStr.length == 0)) {
            LOG.error("No timestamp passed as argument.");
            return false;
        }

        this.timestampsLong = new long[timestampsStr.length];

        for (int curIdx = 0; curIdx < timestampsStr.length; curIdx++) {
            try {
                this.timestampsLong[curIdx] = Long.parseLong(timestampsStr[curIdx]);
            } catch (final NumberFormatException ex) {
                LOG.error("Failed to parse timestamp: " + timestampsStr[curIdx], ex);
                return false;
            }
        }

        return true;
    }

    @Override
    protected boolean performTask() {
        final String lineSeperator = System.getProperty("line.separator");
        final int estimatedNumberOfChars = this.timestampsLong.length * 85;
        final StringBuilder stringBuilder = new StringBuilder(estimatedNumberOfChars);

        for (final long timestampLong : this.timestampsLong) {
            stringBuilder.append(timestampLong).append(": ")
                    .append(LoggingTimestampConverter.convertLoggingTimestampToUTCString(timestampLong));
            stringBuilder.append(" (")
                    .append(LoggingTimestampConverter.convertLoggingTimestampLocalTimeZoneString(timestampLong))
                    .append(')').append(lineSeperator);
        }

        System.out.print(stringBuilder.toString()); // NOPMD (System.out)

        return true;
    }

}