com.mgmtp.perfload.perfalyzer.binning.ErrorCountBinningStragegy.java Source code

Java tutorial

Introduction

Here is the source code for com.mgmtp.perfload.perfalyzer.binning.ErrorCountBinningStragegy.java

Source

/*
 * Copyright (c) 2013-2014 mgm technology partners GmbH
 *
 * 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.mgmtp.perfload.perfalyzer.binning;

import com.google.common.base.Charsets;
import com.mgmtp.perfload.perfalyzer.constants.PerfAlyzerConstants;
import com.mgmtp.perfload.perfalyzer.util.ChannelManager;
import com.mgmtp.perfload.perfalyzer.util.PerfAlyzerFile;
import org.apache.commons.lang3.mutable.MutableInt;
import org.apache.commons.lang3.text.StrBuilder;

import java.io.IOException;
import java.nio.channels.WritableByteChannel;
import java.text.NumberFormat;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;

import static com.google.common.collect.Maps.newHashMap;
import static com.mgmtp.perfload.perfalyzer.constants.PerfAlyzerConstants.DELIMITER;
import static com.mgmtp.perfload.perfalyzer.constants.PerfAlyzerConstants.MEASURING_NORMALIZED_COL_ERROR_MSG;
import static com.mgmtp.perfload.perfalyzer.constants.PerfAlyzerConstants.MEASURING_NORMALIZED_COL_RESULT;
import static com.mgmtp.perfload.perfalyzer.util.IoUtilities.writeLineToChannel;
import static com.mgmtp.perfload.perfalyzer.util.StrBuilderUtils.appendEscapedAndQuoted;

/**
 * @author rnaegele
 */
public class ErrorCountBinningStragegy extends AbstractBinningStrategy {

    private final Map<String, MutableInt> errorsByType = newHashMap();

    public ErrorCountBinningStragegy(final long startOfFirstBin, final NumberFormat intNumberFormat,
            final NumberFormat floatNumberFormat) {
        super(startOfFirstBin, intNumberFormat, floatNumberFormat);
    }

    @Override
    public void binData(final Scanner scanner, final WritableByteChannel destChannel) throws IOException {
        BinManager binManager = new BinManager(startOfFirstBin, PerfAlyzerConstants.BIN_SIZE_MILLIS_30_SECONDS);

        while (scanner.hasNextLine()) {
            tokenizer.reset(scanner.nextLine());
            String[] tokens = tokenizer.getTokenArray();

            long timestampMillis = Long.parseLong(tokens[0]);

            boolean isError = "ERROR".equals(tokens[MEASURING_NORMALIZED_COL_RESULT]);
            if (isError) {
                String errorMsg = tokens[MEASURING_NORMALIZED_COL_ERROR_MSG];
                MutableInt errorsByTypeCounter = errorsByType.get(errorMsg);
                if (errorsByTypeCounter == null) {
                    errorsByTypeCounter = new MutableInt();
                    errorsByType.put(errorMsg, errorsByTypeCounter);
                }
                errorsByTypeCounter.increment();

                binManager.addValue(timestampMillis);
            }
        }

        binManager.toCsv(destChannel, "seconds", "count", intNumberFormat);
    }

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

    @Override
    public void aggregateData(final ChannelManager channelManager) throws IOException {
        WritableByteChannel channel = channelManager.getChannel("errorsByType");

        StrBuilder sb = new StrBuilder();
        appendEscapedAndQuoted(sb, DELIMITER, "error", "count");
        writeLineToChannel(channel, sb.toString(), Charsets.UTF_8);

        for (Entry<String, MutableInt> entry : errorsByType.entrySet()) {
            sb = new StrBuilder(300);
            appendEscapedAndQuoted(sb, DELIMITER, entry.getKey());
            appendEscapedAndQuoted(sb, DELIMITER, intNumberFormat.format(entry.getValue().getValue()));
            writeLineToChannel(channel, sb.toString(), Charsets.UTF_8);
        }
    }

    @Override
    public String transformDefautBinnedFilePath(final PerfAlyzerFile file) {
        return file.copy().addFileNamePart("errorCount").getFile().getPath();
    }
}