package org.oransc.policyagent.clients;
+import io.netty.channel.ChannelOption;
+import io.netty.handler.timeout.ReadTimeoutHandler;
+import io.netty.handler.timeout.WriteTimeoutHandler;
+
import java.lang.invoke.MethodHandles;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
+import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.lang.Nullable;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.reactive.function.client.WebClient.RequestHeadersSpec;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+
import reactor.core.publisher.Mono;
+import reactor.netty.http.client.HttpClient;
+import reactor.netty.tcp.TcpClient;
/**
* Generic reactive REST client.
private final String baseUrl;
public AsyncRestClient(String baseUrl) {
- this.client = WebClient.create(baseUrl);
+
+ TcpClient tcpClient = TcpClient.create() //
+ .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10_000) //
+ .doOnConnected(connection -> {
+ connection.addHandler(new ReadTimeoutHandler(10));
+ connection.addHandler(new WriteTimeoutHandler(30));
+ });
+ HttpClient httpClient = HttpClient.from(tcpClient);
+ ReactorClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);
+
+ this.client = WebClient.builder() //
+ .clientConnector(connector) //
+ .baseUrl(baseUrl) //
+ .build();
+
this.baseUrl = baseUrl;
}
return retrieve(request);
}
+ public Mono<ResponseEntity<String>> putForEntity(String uri) {
+ logger.debug("PUT uri = '{}{}''", baseUrl, uri);
+ RequestHeadersSpec<?> request = client.put() //
+ .uri(uri);
+ return retrieve(request);
+ }
+
public Mono<String> put(String uri, String body) {
return putForEntity(uri, body) //
.flatMap(this::toBody);
private Mono<ResponseEntity<String>> retrieve(RequestHeadersSpec<?> request) {
return request.retrieve() //
- .toEntity(String.class);
+ .toEntity(String.class) //
+ .doOnError(this::onHttpError);
+ }
+
+ private void onHttpError(Throwable t) {
+ if (t instanceof WebClientResponseException) {
+ WebClientResponseException exception = (WebClientResponseException) t;
+ logger.debug("HTTP error status = '{}', body '{}'", exception.getStatusCode(),
+ exception.getResponseBodyAsString());
+ } else {
+ logger.debug("HTTP error: {}", t.getMessage());
+ }
}
- Mono<String> toBody(ResponseEntity<String> entity) {
+ private Mono<String> toBody(ResponseEntity<String> entity) {
if (entity.getBody() == null) {
return Mono.just("");
} else {