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Merge pull request #15 from Nexters/feature/14-real-time-weather-updates
[#14] 실시간 날씨 업데이트 batch
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‎build.gradle.kts‎

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@@ -26,6 +26,7 @@ dependencies {
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implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
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implementation("org.springframework.boot:spring-boot-starter-data-jpa")
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implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0")
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implementation("org.springframework.boot:spring-boot-starter-quartz")
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runtimeOnly("com.mysql:mysql-connector-j")
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testImplementation("org.mockito:mockito-core:4.11.0")

‎src/main/kotlin/nexters/weski/WeskiApplication.kt‎

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@@ -2,8 +2,10 @@ package nexters.weski
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import org.springframework.boot.autoconfigure.SpringBootApplication
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import org.springframework.boot.runApplication
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import org.springframework.scheduling.annotation.EnableScheduling
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@SpringBootApplication(scanBasePackages = ["nexters.weski"])
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@EnableScheduling
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class WeskiApplication
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fun main(args: Array<String>) {

‎src/main/kotlin/nexters/weski/batch/ExternalWeatherService.kt‎

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package nexters.weski.batch
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import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
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import jakarta.transaction.Transactional
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import nexters.weski.ski_resort.SkiResort
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import nexters.weski.ski_resort.SkiResortRepository
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import nexters.weski.weather.CurrentWeather
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import nexters.weski.weather.CurrentWeatherRepository
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import org.springframework.beans.factory.annotation.Value
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import org.springframework.stereotype.Service
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import org.springframework.web.client.RestTemplate
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import java.time.LocalDateTime
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import java.time.format.DateTimeFormatter
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import kotlin.math.pow
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@Service
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class ExternalWeatherService(
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private val currentWeatherRepository: CurrentWeatherRepository,
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private val skiResortRepository: SkiResortRepository
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) {
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@Value("\${weather.api.key}")
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lateinit var apiKey: String
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val restTemplate = RestTemplate()
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val objectMapper = jacksonObjectMapper()
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@Transactional
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fun updateCurrentWeather() {
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val baseDate = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"))
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val baseTime = getBaseTime()
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skiResortRepository.findAll().forEach { resort ->
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val url = "https://apis.data.go.kr/1360000/VilageFcstInfoService_2.0/getUltraSrtNcst" +
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"?serviceKey=$apiKey" +
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"&pageNo=1" +
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"&numOfRows=1000" +
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"&dataType=JSON" +
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"&base_date=$baseDate" +
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"&base_time=$baseTime" +
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"&nx=${resort.xCoordinate}" +
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"&ny=${resort.yCoordinate}"
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val response = restTemplate.getForObject(url, String::class.java)
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val weatherData = parseWeatherData(response)
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val newCurrentWeather = mapToCurrentWeather(weatherData, resort)
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// 기존 데이터 조회
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val existingWeather = currentWeatherRepository.findBySkiResortResortId(resort.resortId)
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if (existingWeather != null) {
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// 기존 데이터의 ID를 사용하여 새로운 엔티티 생성
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val updatedWeather = newCurrentWeather.copy(id = existingWeather.id)
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currentWeatherRepository.save(updatedWeather)
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} else {
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// 새로운 데이터 삽입
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currentWeatherRepository.save(newCurrentWeather)
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}
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}
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}
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private fun getBaseTime(): String {
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val now = LocalDateTime.now().minusHours(1)
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val hour = now.hour.toString().padStart(2, '0')
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return "${hour}00"
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}
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private fun parseWeatherData(response: String?): Map<String, String> {
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val data = mutableMapOf<String, String>()
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response?.let {
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val rootNode = objectMapper.readTree(it)
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val items = rootNode["response"]["body"]["items"]["item"]
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items.forEach { item ->
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val category = item["category"].asText()
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val value = item["obsrValue"].asText()
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data[category] = value
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}
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}
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return data
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}
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private fun mapToCurrentWeather(
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data: Map<String, String>,
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resort: SkiResort
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): CurrentWeather {
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val temperature = data["T1H"]?.toDoubleOrNull()?.toInt() ?: 0
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val windSpeed = data["WSD"]?.toDoubleOrNull() ?: 0.0
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val feelsLike = calculateFeelsLike(temperature, windSpeed)
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val condition = determineCondition(data)
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val description = generateDescription(condition, temperature)
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return CurrentWeather(
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temperature = temperature,
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maxTemp = data["TMX"]?.toDoubleOrNull()?.toInt() ?: temperature,
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minTemp = data["TMN"]?.toDoubleOrNull()?.toInt() ?: temperature,
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feelsLike = feelsLike,
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condition = condition,
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description = description,
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skiResort = resort
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)
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}
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private fun calculateFeelsLike(temperature: Int, windSpeed: Double): Int {
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return if (temperature <= 10 && windSpeed >= 4.8) {
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val feelsLike =
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13.12 + 0.6215 * temperature - 11.37 * windSpeed.pow(0.16) + 0.3965 * temperature * windSpeed.pow(
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0.16
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)
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feelsLike.toInt()
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} else {
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temperature
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}
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}
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private fun determineCondition(data: Map<String, String>): String {
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val pty = data["PTY"]?.toIntOrNull() ?: 0
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val sky = data["SKY"]?.toIntOrNull() ?: 1
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return when {
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pty == 1 || pty == 4 -> "비"
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pty == 2 -> "비/눈"
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pty == 3 -> "눈"
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sky == 1 -> "맑음"
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sky == 3 -> "구름많음"
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sky == 4 -> "흐림"
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else -> "맑음"
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}
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}
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private fun generateDescription(condition: String, temperature: Int): String {
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val prefix = when (condition) {
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"맑음" -> "화창하고"
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"구름많음" -> "구름이 많고"
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"흐림" -> "흐리고"
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"비" -> "비가 오고"
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"비/눈" -> "눈비가 내리고"
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"눈" -> "눈이 오고"
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else -> ""
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}
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val postfix = when {
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temperature <= -15 -> "매우 추워요"
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temperature in -14..-10 -> "다소 추워요"
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temperature in -9..-5 -> "적당한 온도에요"
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temperature in -4..0 -> "조금 따뜻해요"
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temperature in 1..5 -> "따뜻해요"
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temperature in 6..10 -> "다소 더워요"
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else -> "더워요"
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}
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return "$prefix $postfix"
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}
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}

‎src/main/kotlin/nexters/weski/batch/WeatherScheduler.kt‎

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package nexters.weski.batch
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import org.springframework.scheduling.annotation.Scheduled
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import org.springframework.stereotype.Component
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@Component
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class WeatherScheduler(
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private val externalWeatherService: ExternalWeatherService
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) {
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@Scheduled(cron = "0 0 * * * ?")
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fun scheduleWeatherUpdate() {
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externalWeatherService.updateCurrentWeather()
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}
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}

‎src/main/kotlin/nexters/weski/ski_resort/SkiResort.kt‎

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@@ -4,6 +4,7 @@ import jakarta.persistence.*
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import nexters.weski.common.BaseEntity
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import nexters.weski.slope.Slope
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import nexters.weski.webcam.Webcam
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import java.time.LocalDate
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@Entity
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@Table(name = "ski_resorts")
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@Enumerated(EnumType.STRING)
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val status: ResortStatus,
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val openingDate: java.time.LocalDate? = null,
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val openingDate: LocalDate? = null,
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val closingDate: java.time.LocalDate? = null,
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val closingDate: LocalDate? = null,
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val openSlopes: Int = 0,
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val lateNightOperatingHours: String? = null,
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val dawnOperatingHours: String? = null,
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val midnightOperatingHours: String? = null,
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val snowfallTime: String? = null,
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val xCoordinate: String,
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val yCoordinate: String,
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@OneToMany(mappedBy = "skiResort")
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val slopes: List<Slope> = emptyList(),

‎src/main/kotlin/nexters/weski/weather/CurrentWeather.kt‎

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@@ -7,18 +7,19 @@ import nexters.weski.ski_resort.SkiResort
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@Entity
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@Table(name = "current_weather")
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data class CurrentWeather(
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@Id
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val resortId: Long,
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@Id @GeneratedValue(strategy = GenerationType.IDENTITY)
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val id: Long = 0,
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val temperature: Int,
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val maxTemp: Int,
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val minTemp: Int,
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val feelsLike: Int,
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val description: String,
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@Column(name = "`condition`")
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val condition: String,
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@OneToOne
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@MapsId
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@JoinColumn(name = "resort_id")
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@JoinColumn(name = "resort_id", unique = true)
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val skiResort: SkiResort
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) : BaseEntity()

‎src/main/kotlin/nexters/weski/weather/WeatherDto.kt‎

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dailyWeather: List<DailyWeather>
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): WeatherDto {
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return WeatherDto(
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resortId = currentWeather.resortId,
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resortId = currentWeather.skiResort.resortId,
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currentWeather = CurrentWeatherDto.fromEntity(currentWeather),
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hourlyWeather = hourlyWeather.map { HourlyWeatherDto.fromEntity(it) },
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weeklyWeather = dailyWeather.map { DailyWeatherDto.fromEntity(it) }

‎src/main/resources/application.yml‎

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path: /v3/api-docs
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swagger-ui:
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path: /swagger-ui.html
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weather:
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api:
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key: p6zNXOJrrBY4cuX7OYtdDMtmR8hiGeUaBLf0z6BXnm/qniV8wB0SuPwBgqKDTKV/24EW7xiRY3DCS21Ess/42Q==
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