com.googlecode.jmxtrans.model.output.StatsDTelegrafWriter.java Source code

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Here is the source code for com.googlecode.jmxtrans.model.output.StatsDTelegrafWriter.java

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/**
 * The MIT License
 * Copyright  2010 JmxTrans team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.googlecode.jmxtrans.model.output;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.googlecode.jmxtrans.model.Query;
import com.googlecode.jmxtrans.model.Result;
import com.googlecode.jmxtrans.model.ResultAttribute;
import com.googlecode.jmxtrans.model.Server;
import com.googlecode.jmxtrans.model.naming.KeyUtils;
import com.googlecode.jmxtrans.model.output.support.WriterBasedOutputWriter;
import com.googlecode.jmxtrans.model.results.CPrecisionValueTransformer;
import com.googlecode.jmxtrans.model.results.ValueTransformer;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.annotation.Nonnull;
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import static com.googlecode.jmxtrans.util.NumberUtils.isNumeric;

public class StatsDTelegrafWriter implements WriterBasedOutputWriter {

    private static final Logger log = LoggerFactory.getLogger(StatsDTelegrafWriter.class);

    @Nonnull
    private final ValueTransformer valueTransformer = new CPrecisionValueTransformer();
    @Nonnull
    private final ImmutableList<String> bucketTypes;
    @Nonnull
    private final ImmutableMap<String, String> tags;
    @Nonnull
    private final ImmutableSet<ResultAttribute> resultAttributesToWriteAsTags;

    public StatsDTelegrafWriter(String[] bucketTypes, ImmutableMap<String, String> tags,
            ImmutableSet<ResultAttribute> resultAttributesToWriteAsTags) {
        this.bucketTypes = ImmutableList.copyOf(bucketTypes);
        this.tags = tags;
        this.resultAttributesToWriteAsTags = resultAttributesToWriteAsTags;
    }

    @Override
    public void write(@Nonnull Writer writer, @Nonnull Server server, @Nonnull Query query,
            @Nonnull Iterable<Result> results) throws IOException {

        int resultIndex = -1;
        for (Result result : results) {
            resultIndex++;
            String bucketType = getBucketType(resultIndex);
            String attributeName = result.getAttributeName();

            List<String> resultTagList = new ArrayList<>();
            resultTagList.add(",jmxport=" + server.getPort());
            //tagList.add("objectName=" + query.getObjectName());
            resultTagList.add("attribute=" + attributeName);

            if (isNotValidValue(result.getValue())) {
                log.debug("Skipping message key[{}] with value: {}.", result.getAttributeName(), result.getValue());
                continue;
            }
            List<String> tagList = new ArrayList(resultTagList);

            if (!result.getValuePath().isEmpty()) {
                tagList.add("resultKey=" + KeyUtils.getValuePathString(result));
            }

            for (Map.Entry e : tags.entrySet()) {
                tagList.add(e.getKey() + "=" + e.getValue());
            }

            Number actualValue = computeActualValue(result.getValue());
            StringBuilder sb = new StringBuilder(result.getKeyAlias()).append(StringUtils.join(tagList, ","))
                    .append(":").append(actualValue).append("|").append(bucketType).append("\n");

            String output = sb.toString();
            if (actualValue.floatValue() < 0 && !StatsDMetricType.GAUGE.getKey().equals(bucketType)) {
                log.debug("Negative values are only supported for gauges, not sending: {}.", output);
            } else {
                log.debug(output);
                writer.write(output);
            }
        }
    }

    private String getBucketType(int resultIndex) {
        if (this.bucketTypes.size() > resultIndex) {
            return bucketTypes.get(resultIndex);
        }
        return Iterables.getLast(bucketTypes);
    }

    private boolean isNotValidValue(Object value) {
        return !isNumeric(value);
    }

    private Number computeActualValue(Object value) {
        Object transformedValue = valueTransformer.apply(value);
        if (isNumeric(transformedValue)) {
            return transformedValue instanceof Number ? (Number) transformedValue
                    : Float.valueOf(transformedValue.toString());
        }
        throw new IllegalArgumentException(
                "Only numeric values are supported, enable debug log level for more details.");
    }

}