package org.oransc.policyagent.clients;
import io.netty.channel.ChannelOption;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.handler.timeout.WriteTimeoutHandler;
import java.lang.invoke.MethodHandles;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.net.ssl.SSLException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
*/
public class AsyncRestClient {
private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
- private final WebClient client;
+ private WebClient webClient = null;
private final String baseUrl;
+ private static final AtomicInteger sequenceNumber = new AtomicInteger();
public AsyncRestClient(String 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;
}
public Mono<ResponseEntity<String>> postForEntity(String uri, @Nullable String body) {
- logger.debug("POST uri = '{}{}''", baseUrl, uri);
+ Object traceTag = createTraceTag();
+ logger.debug("{} POST uri = '{}{}''", traceTag, baseUrl, uri);
+ logger.trace("{} POST body: {}", traceTag, body);
Mono<String> bodyProducer = body != null ? Mono.just(body) : Mono.empty();
- RequestHeadersSpec<?> request = client.post() //
- .uri(uri) //
- .contentType(MediaType.APPLICATION_JSON) //
- .body(bodyProducer, String.class);
- return retrieve(request);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.post() //
+ .uri(uri) //
+ .contentType(MediaType.APPLICATION_JSON) //
+ .body(bodyProducer, String.class);
+ return retrieve(traceTag, request);
+ });
}
public Mono<String> post(String uri, @Nullable String body) {
}
public Mono<String> postWithAuthHeader(String uri, String body, String username, String password) {
- logger.debug("POST (auth) uri = '{}{}''", baseUrl, uri);
- RequestHeadersSpec<?> request = client.post() //
- .uri(uri) //
- .headers(headers -> headers.setBasicAuth(username, password)) //
- .contentType(MediaType.APPLICATION_JSON) //
- .bodyValue(body);
- return retrieve(request) //
- .flatMap(this::toBody);
+ Object traceTag = createTraceTag();
+ logger.debug("{} POST (auth) uri = '{}{}''", traceTag, baseUrl, uri);
+ logger.trace("{} POST body: {}", traceTag, body);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.post() //
+ .uri(uri) //
+ .headers(headers -> headers.setBasicAuth(username, password)) //
+ .contentType(MediaType.APPLICATION_JSON) //
+ .bodyValue(body);
+ return retrieve(traceTag, request) //
+ .flatMap(this::toBody);
+ });
}
public Mono<ResponseEntity<String>> putForEntity(String uri, String body) {
- logger.debug("PUT uri = '{}{}''", baseUrl, uri);
- RequestHeadersSpec<?> request = client.put() //
- .uri(uri) //
- .contentType(MediaType.APPLICATION_JSON) //
- .bodyValue(body);
- return retrieve(request);
+ Object traceTag = createTraceTag();
+ logger.debug("{} PUT uri = '{}{}''", traceTag, baseUrl, uri);
+ logger.trace("{} PUT body: {}", traceTag, body);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.put() //
+ .uri(uri) //
+ .contentType(MediaType.APPLICATION_JSON) //
+ .bodyValue(body);
+ return retrieve(traceTag, request);
+ });
}
public Mono<ResponseEntity<String>> putForEntity(String uri) {
- logger.debug("PUT uri = '{}{}''", baseUrl, uri);
- RequestHeadersSpec<?> request = client.put() //
- .uri(uri);
- return retrieve(request);
+ Object traceTag = createTraceTag();
+ logger.debug("{} PUT uri = '{}{}''", traceTag, baseUrl, uri);
+ logger.trace("{} PUT body: <empty>", traceTag);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.put() //
+ .uri(uri);
+ return retrieve(traceTag, request);
+ });
}
public Mono<String> put(String uri, String body) {
}
public Mono<ResponseEntity<String>> getForEntity(String uri) {
- logger.debug("GET uri = '{}{}''", baseUrl, uri);
- RequestHeadersSpec<?> request = client.get().uri(uri);
- return retrieve(request);
+ Object traceTag = createTraceTag();
+ logger.debug("{} GET uri = '{}{}''", traceTag, baseUrl, uri);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.get().uri(uri);
+ return retrieve(traceTag, request);
+ });
}
public Mono<String> get(String uri) {
}
public Mono<ResponseEntity<String>> deleteForEntity(String uri) {
- logger.debug("DELETE uri = '{}{}''", baseUrl, uri);
- RequestHeadersSpec<?> request = client.delete().uri(uri);
- return retrieve(request);
+ Object traceTag = createTraceTag();
+ logger.debug("{} DELETE uri = '{}{}''", traceTag, baseUrl, uri);
+ return getWebClient() //
+ .flatMap(client -> {
+ RequestHeadersSpec<?> request = client.delete().uri(uri);
+ return retrieve(traceTag, request);
+ });
}
public Mono<String> delete(String uri) {
.flatMap(this::toBody);
}
- private Mono<ResponseEntity<String>> retrieve(RequestHeadersSpec<?> request) {
+ private Mono<ResponseEntity<String>> retrieve(Object traceTag, RequestHeadersSpec<?> request) {
return request.retrieve() //
.toEntity(String.class) //
- .doOnError(this::onHttpError);
+ .doOnNext(entity -> logger.trace("{} Received: {}", traceTag, entity.getBody()))
+ .doOnError(throwable -> onHttpError(traceTag, throwable));
}
- private void onHttpError(Throwable t) {
+ private static Object createTraceTag() {
+ return sequenceNumber.incrementAndGet();
+ }
+
+ private void onHttpError(Object traceTag, Throwable t) {
if (t instanceof WebClientResponseException) {
WebClientResponseException exception = (WebClientResponseException) t;
- logger.debug("HTTP error status = '{}', body '{}'", exception.getStatusCode(),
+ logger.debug("{} HTTP error status = '{}', body '{}'", traceTag, exception.getStatusCode(),
exception.getResponseBodyAsString());
} else {
- logger.debug("HTTP error: {}", t.getMessage());
+ logger.debug("{} HTTP error: {}", traceTag, t.getMessage());
}
}
}
}
+ private static SslContext createSslContext() throws SSLException {
+ return SslContextBuilder.forClient() //
+ .trustManager(InsecureTrustManagerFactory.INSTANCE) //
+ .build();
+ }
+
+ private static WebClient createWebClient(String baseUrl, SslContext sslContext) {
+ TcpClient tcpClient = TcpClient.create() //
+ .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10_000) //
+ .secure(c -> c.sslContext(sslContext)) //
+ .doOnConnected(connection -> {
+ connection.addHandlerLast(new ReadTimeoutHandler(30));
+ connection.addHandlerLast(new WriteTimeoutHandler(30));
+ });
+ HttpClient httpClient = HttpClient.from(tcpClient);
+ ReactorClientHttpConnector connector = new ReactorClientHttpConnector(httpClient);
+
+ return WebClient.builder() //
+ .clientConnector(connector) //
+ .baseUrl(baseUrl) //
+ .build();
+ }
+
+ private Mono<WebClient> getWebClient() {
+ if (this.webClient == null) {
+ try {
+ SslContext sslContext = createSslContext();
+ this.webClient = createWebClient(this.baseUrl, sslContext);
+ } catch (SSLException e) {
+ logger.error("Could not create WebClient {}", e.getMessage());
+ return Mono.error(e);
+ }
+ }
+ return Mono.just(this.webClient);
+ }
+
}
Code Review / nonrtric.git / blobdiff