<?php
# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: google/monitoring/v3/common.proto

namespace Google\Cloud\Monitoring\V3;

use Google\Protobuf\Internal\GPBType;
use Google\Protobuf\Internal\RepeatedField;
use Google\Protobuf\Internal\GPBUtil;

/**
 * A time interval extending just after a start time through an end time.
 * If the start time is the same as the end time, then the interval
 * represents a single point in time.
 *
 * Generated from protobuf message <code>google.monitoring.v3.TimeInterval</code>
 */
class TimeInterval extends \Google\Protobuf\Internal\Message
{
    /**
     * Required. The end of the time interval.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp end_time = 2;</code>
     */
    private $end_time = null;
    /**
     * Optional. The beginning of the time interval.  The default value
     * for the start time is the end time. The start time must not be
     * later than the end time.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp start_time = 1;</code>
     */
    private $start_time = null;

    /**
     * Constructor.
     *
     * @param array $data {
     *     Optional. Data for populating the Message object.
     *
     *     @type \Google\Protobuf\Timestamp $end_time
     *           Required. The end of the time interval.
     *     @type \Google\Protobuf\Timestamp $start_time
     *           Optional. The beginning of the time interval.  The default value
     *           for the start time is the end time. The start time must not be
     *           later than the end time.
     * }
     */
    public function __construct($data = NULL) {
        \GPBMetadata\Google\Monitoring\V3\Common::initOnce();
        parent::__construct($data);
    }

    /**
     * Required. The end of the time interval.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp end_time = 2;</code>
     * @return \Google\Protobuf\Timestamp
     */
    public function getEndTime()
    {
        return $this->end_time;
    }

    /**
     * Required. The end of the time interval.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp end_time = 2;</code>
     * @param \Google\Protobuf\Timestamp $var
     * @return $this
     */
    public function setEndTime($var)
    {
        GPBUtil::checkMessage($var, \Google\Protobuf\Timestamp::class);
        $this->end_time = $var;

        return $this;
    }

    /**
     * Optional. The beginning of the time interval.  The default value
     * for the start time is the end time. The start time must not be
     * later than the end time.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp start_time = 1;</code>
     * @return \Google\Protobuf\Timestamp
     */
    public function getStartTime()
    {
        return $this->start_time;
    }

    /**
     * Optional. The beginning of the time interval.  The default value
     * for the start time is the end time. The start time must not be
     * later than the end time.
     *
     * Generated from protobuf field <code>.google.protobuf.Timestamp start_time = 1;</code>
     * @param \Google\Protobuf\Timestamp $var
     * @return $this
     */
    public function setStartTime($var)
    {
        GPBUtil::checkMessage($var, \Google\Protobuf\Timestamp::class);
        $this->start_time = $var;

        return $this;
    }

}

