Allow to configure the Elasticsearch rest client timeouts

See gh-15965

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/elasticsearch/rest/RestClientAutoConfiguration.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.autoconfigure.elasticsearch.rest;
 
+import java.time.Duration;
+
 import org.apache.http.HttpHost;
 import org.apache.http.auth.AuthScope;
 import org.apache.http.auth.Credentials;
@@ -68,6 +70,14 @@ public class RestClientAutoConfiguration {
 			builder.setHttpClientConfigCallback((httpClientBuilder) -> httpClientBuilder
 					.setDefaultCredentialsProvider(credentialsProvider));
 		});
+		builder.setRequestConfigCallback((requestConfigBuilder) -> {
+			map.from(properties::getConnectionTimeout).whenNonNull()
+					.as(Duration::toMillis).asInt(Math::toIntExact)
+					.to(requestConfigBuilder::setConnectTimeout);
+			map.from(properties::getReadTimeout).whenNonNull().as(Duration::toMillis)
+					.asInt(Math::toIntExact).to(requestConfigBuilder::setSocketTimeout);
+			return requestConfigBuilder;
+		});
 		builderCustomizers.orderedStream()
 				.forEach((customizer) -> customizer.customize(builder));
 		return builder;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/elasticsearch/rest/RestClientProperties.java

 /*
- * Copyright 2012-2018 the original author or authors.
+ * Copyright 2012-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,6 +16,7 @@
 
 package org.springframework.boot.autoconfigure.elasticsearch.rest;
 
+import java.time.Duration;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -47,6 +48,16 @@ public class RestClientProperties {
 	 */
 	private String password;
 
+	/**
+	 * Connection timeout.
+	 */
+	private Duration connectionTimeout = Duration.ofSeconds(1);
+
+	/**
+	 * Read timeout.
+	 */
+	private Duration readTimeout = Duration.ofSeconds(30);
+
 	public List<String> getUris() {
 		return this.uris;
 	}
@@ -71,4 +82,20 @@ public class RestClientProperties {
 		this.password = password;
 	}
 
+	public Duration getConnectionTimeout() {
+		return this.connectionTimeout;
+	}
+
+	public void setConnectionTimeout(Duration connectionTimeout) {
+		this.connectionTimeout = connectionTimeout;
+	}
+
+	public Duration getReadTimeout() {
+		return this.readTimeout;
+	}
+
+	public void setReadTimeout(Duration readTimeout) {
+		this.readTimeout = readTimeout;
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/rest/RestClientAutoConfigurationTests.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.autoconfigure.elasticsearch.rest;
 
+import java.time.Duration;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -23,6 +24,7 @@ import org.elasticsearch.action.get.GetRequest;
 import org.elasticsearch.action.index.IndexRequest;
 import org.elasticsearch.client.RequestOptions;
 import org.elasticsearch.client.RestClient;
+import org.elasticsearch.client.RestClientBuilder;
 import org.elasticsearch.client.RestHighLevelClient;
 import org.junit.ClassRule;
 import org.junit.Test;
@@ -32,6 +34,7 @@ import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.test.util.ReflectionTestUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
@@ -74,6 +77,30 @@ public class RestClientAutoConfigurationTests {
 				});
 	}
 
+	@Test
+	public void defaultTimeoutsShouldBeConfigured() {
+		this.contextRunner.run((context) -> {
+			assertThat(context).hasSingleBean(RestClient.class);
+			RestClient restClient = context.getBean(RestClient.class);
+			assertTimeouts(restClient,
+					Duration.ofMillis(RestClientBuilder.DEFAULT_CONNECT_TIMEOUT_MILLIS), Duration.ofMillis(RestClientBuilder.DEFAULT_SOCKET_TIMEOUT_MILLIS)
+			);
+		});
+	}
+
+	@Test
+	public void timeoutsCanBeConfigured() {
+		this.contextRunner
+				.withPropertyValues("spring.elasticsearch.rest.connection-timeout=15s",
+						"spring.elasticsearch.rest.read-timeout=1m")
+				.run((context) -> {
+					assertThat(context).hasSingleBean(RestClient.class);
+					RestClient restClient = context.getBean(RestClient.class);
+					assertTimeouts(restClient, Duration.ofSeconds(15), Duration.ofMinutes(1)
+					);
+				});
+	}
+
 	@Test
 	public void restClientCanQueryElasticsearchNode() {
 		this.contextRunner
@@ -94,6 +121,15 @@ public class RestClientAutoConfigurationTests {
 				});
 	}
 
+	private static void assertTimeouts(RestClient restClient, Duration connectTimeout, Duration readTimeout) {
+		Object client = ReflectionTestUtils.getField(restClient, "client");
+		Object config = ReflectionTestUtils.getField(client, "defaultConfig");
+		assertThat(config).hasFieldOrPropertyWithValue("socketTimeout",
+				Math.toIntExact(readTimeout.toMillis()));
+		assertThat(config).hasFieldOrPropertyWithValue("connectTimeout",
+				Math.toIntExact(connectTimeout.toMillis()));
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	static class CustomRestClientConfiguration {