com.mfizz.observer.jackson.LongSummaryGaugeSerializer Maven / Gradle / Ivy
package com.mfizz.observer.jackson;
/*
* #%L
* mfizz-observer-jackson
* %%
* Copyright (C) 2012 mfizz
* %%
* 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.
* #L%
*/
import com.mfizz.observer.metric.LongSummaryGauge;
import java.io.IOException;
import java.text.DecimalFormat;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.map.JsonSerializer;
import org.codehaus.jackson.map.SerializerProvider;
/**
*
* @author [email protected]
*/
public class LongSummaryGaugeSerializer extends JsonSerializer {
static private DecimalFormat format = new DecimalFormat("0.##");
@Override
public void serialize(LongSummaryGauge t, JsonGenerator jg, SerializerProvider sp) throws IOException, JsonProcessingException {
jg.writeStartObject();
jg.writeFieldName("avg_value");
jg.writeNumber(format.format(t.getAvgValue()));
jg.writeFieldName("min_value");
jg.writeNumber(format.format(t.getMinValue()));
jg.writeFieldName("max_value");
jg.writeNumber(format.format(t.getMaxValue()));
jg.writeEndObject();
}
}