org.camunda.bpm.benchmark.report.CsvReportWriter.java Source code

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Here is the source code for org.camunda.bpm.benchmark.report.CsvReportWriter.java

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/* 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 org.camunda.bpm.benchmark.report;

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.camunda.bpm.benchmark.report.MetricsResults.MetricsResultInstance;

/**
 * @author Thorben Lindhauer
 *
 */
public class CsvReportWriter implements MetricsWriter {

    public static final DateFormat DATE_FORMAT = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");

    protected String fileName;

    public CsvReportWriter(String fileName) {
        this.fileName = fileName;
    }

    public void write(MetricsResults result) {
        File file = new File(fileName);
        List<String> lines = new ArrayList<String>();

        // header
        addLine(lines, "reporter", "metric", "reporter_metric", "operator", "intervalStart", "intervalEnd",
                "value");

        for (Map.Entry<String, List<MetricsResultInstance>> resultsByReporter : result.getMetricsByReporter()
                .entrySet()) {
            for (MetricsResultInstance resultInstance : resultsByReporter.getValue()) {
                addLine(lines, resultsByReporter.getKey(), resultInstance.getMetricName(),
                        resultsByReporter.getKey() + "_" + resultInstance.getMetricName(),
                        resultInstance.getOperator(), formatDate(resultInstance.getStartDate()),
                        formatDate(resultInstance.getEndDate()), resultInstance.getValue());
            }
        }

        for (MetricsResultInstance resultInstance : result.getAggregatedResults()) {
            addLine(lines, "aggregated", resultInstance.getMetricName(),
                    "aggregated_" + resultInstance.getMetricName(), resultInstance.getOperator(),
                    formatDate(resultInstance.getStartDate()), formatDate(resultInstance.getEndDate()),
                    resultInstance.getValue());
        }

        System.out.println("Writing to " + file.getAbsolutePath());

        try {
            FileUtils.writeLines(file, "UTF-8", lines);
        } catch (IOException e) {
            throw new RuntimeException("Could not write to file " + fileName, e);
        }
    }

    protected void addLine(List<String> lines, Object... values) {
        StringBuilder sb = new StringBuilder();
        for (Object value : values) {
            sb.append(value);
            sb.append(";");
        }

        lines.add(sb.toString());
    }

    protected String formatDate(Date date) {
        return DATE_FORMAT.format(date);
    }
}