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| import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;
import java.math.BigDecimal;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;
@RestController
@RequestMapping("/api/web-client")
public class WebClientController {
private static final Logger log = LoggerFactory.getLogger(WebClientController.class);
private final WebClient webClient;
public WebClientController(WebClient.Builder builder) {
this.webClient = builder.baseUrl("https://api.open-meteo.com/v1/forecast").build();
}
private CompletableFuture<OpenMeteoResponse> getCMA(BigDecimal lat, BigDecimal lon) {
log.error("start cma {}", Thread.currentThread().getName());
long startTime = System.currentTimeMillis();
CompletableFuture<OpenMeteoResponse> cache = this.webClient.get().uri(
uriBuilder -> uriBuilder
.queryParam("latitude", lat)
.queryParam("longitude", lon)
.queryParam("hourly", "temperature_2m")
.queryParam("timezone", "Asia/Shanghai")
.queryParam("models", "cma_grapes_global")
.queryParam("forecast_days", "1")
.build()
).retrieve().bodyToMono(OpenMeteoResponse.class).toFuture();
long endTime = System.currentTimeMillis();
log.error("end cma {}", endTime - startTime);
return cache;
}
private CompletableFuture<OpenMeteoResponse> getGFS(BigDecimal lat, BigDecimal lon) {
log.error("start gfs {}", Thread.currentThread().getName());
long startTime = System.currentTimeMillis();
CompletableFuture<OpenMeteoResponse> cache = this.webClient.get().uri(
uriBuilder -> uriBuilder
.queryParam("latitude", lat)
.queryParam("longitude", lon)
.queryParam("hourly", "temperature_2m")
.queryParam("timezone", "Asia/Shanghai")
.queryParam("models", "gfs_global")
.queryParam("forecast_days", "1")
.build()
).retrieve().bodyToMono(OpenMeteoResponse.class).toFuture();
long endTime = System.currentTimeMillis();
log.error("end gfs {}", endTime - startTime);
return cache;
}
private CompletableFuture<OpenMeteoResponse> getIcon(BigDecimal lat, BigDecimal lon) {
log.error("start gfs {}", Thread.currentThread().getName());
long startTime = System.currentTimeMillis();
CompletableFuture<OpenMeteoResponse> cache = this.webClient.get().uri(
uriBuilder -> uriBuilder
.queryParam("latitude", lat)
.queryParam("longitude", lon)
.queryParam("hourly", "temperature_2m")
.queryParam("timezone", "Asia/Shanghai")
.queryParam("models", "icon_global")
.queryParam("forecast_days", "1")
.build()
).retrieve().bodyToMono(OpenMeteoResponse.class).toFuture();
long endTime = System.currentTimeMillis();
log.error("end gfs {}", endTime - startTime);
return cache;
}
private CompletableFuture<OpenMeteoResponse> getGraphCast(BigDecimal lat, BigDecimal lon) {
log.error("start gfs {}", Thread.currentThread().getName());
long startTime = System.currentTimeMillis();
CompletableFuture<OpenMeteoResponse> cache = this.webClient.get().uri(
uriBuilder -> uriBuilder
.queryParam("latitude", lat)
.queryParam("longitude", lon)
.queryParam("hourly", "temperature_2m")
.queryParam("timezone", "Asia/Shanghai")
.queryParam("models", "gfs_graphcast025")
.queryParam("forecast_days", "1")
.build()
).retrieve().bodyToMono(OpenMeteoResponse.class).toFuture();
long endTime = System.currentTimeMillis();
log.error("end gfs {}", endTime - startTime);
return cache;
}
public Mono<List<OpenMeteoResponse>> getMergedData(BigDecimal lat, BigDecimal lon) {
List<CompletableFuture<OpenMeteoResponse>> futures = List.of(
getCMA(lat, lon),
getGFS(lat, lon),
getIcon(lat, lon),
getGraphCast(lat, lon)
);
CompletableFuture<Void> allOf = CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]));
return Mono.fromFuture(allOf.thenApply(v -> futures.stream()
.map(CompletableFuture::join)
.collect(Collectors.toList())));
}
@GetMapping
private Mono<List<OpenMeteoResponse>> getOpenMeteoResponse(@RequestParam(defaultValue = "52.5625") BigDecimal lat, @RequestParam(defaultValue = "13.375") BigDecimal lon) {
return getMergedData(lat, lon);
}
}
|