monasca.persister.repository.influxdb.Measurement.java Source code

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Here is the source code for monasca.persister.repository.influxdb.Measurement.java

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/*
 * Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
 *
 * 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 monasca.persister.repository.influxdb;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.annotation.Nullable;

public final class Measurement {

    private static final Logger logger = LoggerFactory.getLogger(Measurement.class);

    private final ObjectMapper objectMapper = new ObjectMapper();

    public final long time;
    public final double value;
    public final Map<String, String> valueMeta;

    public Measurement(final long time, final double value, final @Nullable Map<String, String> valueMeta) {

        this.time = time;
        this.value = value;
        this.valueMeta = valueMeta == null ? new HashMap<String, String>() : valueMeta;

    }

    public String getISOFormattedTimeString() {

        DateTimeFormatter dateFormatter = ISODateTimeFormat.dateTime();
        Date date = new Date(this.time);
        DateTime dateTime = new DateTime(date.getTime(), DateTimeZone.UTC);

        return dateFormatter.print(dateTime);
    }

    public long getTime() {
        return time;
    }

    public double getValue() {
        return value;
    }

    public Map<String, String> getValueMeta() {
        return valueMeta;
    }

    public String getValueMetaJSONString() {

        if (!this.valueMeta.isEmpty()) {

            try {

                return objectMapper.writeValueAsString(this.valueMeta);

            } catch (JsonProcessingException e) {

                logger.error("Failed to serialize value meta {}", this.valueMeta, e);

            }

        }

        return null;

    }

}