MetricTimeRangeValue.java

// Copyright 2016 Twitter. All rights reserved.
//
// 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.twitter.heron.metricscachemgr.metricscache.query;

import com.twitter.heron.metricscachemgr.metricscache.store.MetricDatapoint;

/**
 * immutable data bag for time range value
 * time window: startTime ~ endTime, in milli-seconds
 * metric value string: value
 */
public final class MetricTimeRangeValue {
  private final long startTime;
  private final long endTime;
  private final String value;

  public MetricTimeRangeValue(long startTime, long endTime, String value) {
    this.startTime = startTime;
    this.endTime = endTime;
    this.value = value;
  }

  public MetricTimeRangeValue(MetricDatapoint metricDatapoint) {
    this.startTime = metricDatapoint.getTimestamp();
    this.endTime = metricDatapoint.getTimestamp();
    this.value = metricDatapoint.getValue();
  }

  MetricTimeRangeValue(MetricTimeRangeValue metricTimeRangeValue) {
    this.startTime = metricTimeRangeValue.startTime;
    this.endTime = metricTimeRangeValue.endTime;
    this.value = metricTimeRangeValue.value;
  }

  public long getStartTime() {
    return startTime;
  }

  public long getEndTime() {
    return endTime;
  }

  public String getValue() {
    return value;
  }

  @Override
  public String toString() {
    StringBuilder sb = new StringBuilder();
    sb.append("[")
        .append(startTime).append("-").append(endTime)
        .append(":")
        .append(value)
        .append("]");
    return sb.toString();
  }
}