/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.jmeter.report.processor;

import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.jmeter.report.core.Sample;
import org.apache.jmeter.report.utils.MetricUtils;
import org.apache.jmeter.samplers.SampleSaveConfiguration;
import org.apache.jmeter.util.JMeterUtils;

/**
 * <p>
 * The class ErrorSummaryConsumer provides a consumer that calculates error
 * statistics.
 * </p>
 * 
 * @since 3.0
 */
public class ErrorsSummaryConsumer extends AbstractSummaryConsumer<Long> {

    static final boolean ASSERTION_RESULTS_FAILURE_MESSAGE = 
            JMeterUtils
                .getPropDefault(
                        SampleSaveConfiguration.ASSERTION_RESULTS_FAILURE_MESSAGE_PROP,
                        true);
            
    private static final Long ZERO = Long.valueOf(0);
    private long errorCount = 0L;

    /**
     * Instantiates a new errors summary consumer.
     */
    public ErrorsSummaryConsumer() {
        super(false);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.apache.jmeter.report.processor.AbstractSummaryConsumer#createDataResult
     * (java.lang.String)
     */
    @Override
    protected ListResultData createDataResult(String key, Long data) {
        ListResultData result = new ListResultData();
        result.addResult(new ValueResultData(key != null ? key : JMeterUtils
                .getResString("reportgenerator_summary_total")));
        result.addResult(new ValueResultData(data));
        result.addResult(new ValueResultData(Double.valueOf((double) data.longValue() * 100 / errorCount)));
        result.addResult(new ValueResultData(Double.valueOf((double) data.longValue() * 100
                / getOverallInfo().getData().doubleValue())));
        return result;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.apache.jmeter.report.processor.AbstractSummaryConsumer#getKeyFromSample
     * (org.apache.jmeter.report.core.Sample)
     */
    @Override
    protected String getKeyFromSample(Sample sample) {
        return getErrorKey(sample);
    }

    /**
     * @param sample {@link Sample}
     * @return String Error key for sample 
     */
    static String getErrorKey(Sample sample) {
        String responseCode = sample.getResponseCode();
        String responseMessage = sample.getResponseMessage();
        String key = responseCode + (!StringUtils.isEmpty(responseMessage) ? 
                 "/" + StringEscapeUtils.escapeJson(StringEscapeUtils.escapeHtml4(responseMessage)) : "");
        if (MetricUtils.isSuccessCode(responseCode) || 
                (StringUtils.isEmpty(responseCode) && 
                        !StringUtils.isEmpty(sample.getFailureMessage()))) {
            key = MetricUtils.ASSERTION_FAILED;
            if (ASSERTION_RESULTS_FAILURE_MESSAGE) {
                String msg = sample.getFailureMessage();
                if (!StringUtils.isEmpty(msg)) {
                    key = StringEscapeUtils.escapeJson(StringEscapeUtils.escapeHtml4(msg));
                }
            }
        }
        return key;
    }
    /*
     * (non-Javadoc)
     * 
     * @see
     * org.apache.jmeter.report.processor.AbstractSummaryConsumer#updateData
     * (org.apache.jmeter.report.processor.AbstractSummaryConsumer.SummaryInfo,
     * org.apache.jmeter.report.core.Sample)
     */
    @Override
    protected void updateData(SummaryInfo info, Sample sample) {
        // Initialize overall data if they don't exist
        SummaryInfo overallInfo = getOverallInfo();
        Long overallData = overallInfo.getData();
        if (overallData == null) {
            overallData = ZERO;
        }
        overallInfo.setData(Long.valueOf(overallData.longValue() + 1));

        // Process only failed samples
        if (!sample.getSuccess()) {
            errorCount++;

            Long data = info.getData();
            if (data == null) {
                data = ZERO;
            }
            info.setData(Long.valueOf(data.longValue() + 1));
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.jmeter.report.processor.SampleConsumer#stopConsuming()
     */
    @Override
    public void stopConsuming() {
        super.stopConsuming();

        // Reset state
        errorCount = 0L;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.apache.jmeter.report.processor.AbstractSummaryConsumer#createResultTitles
     * ()
     */
    @Override
    protected ListResultData createResultTitles() {
        ListResultData titles = new ListResultData();
        titles.addResult(new ValueResultData(JMeterUtils
                .getResString("reportgenerator_summary_errors_type")));
        titles.addResult(new ValueResultData(JMeterUtils
                .getResString("reportgenerator_summary_errors_count")));
        titles.addResult(new ValueResultData(JMeterUtils
                .getResString("reportgenerator_summary_errors_rate_error")));
        titles.addResult(new ValueResultData(JMeterUtils
                .getResString("reportgenerator_summary_errors_rate_all")));
        return titles;
    }
}
