org.springframework.boot.autoconfigure.elasticsearch.rest.RestClientAutoConfiguration.java Source code

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Here is the source code for org.springframework.boot.autoconfigure.elasticsearch.rest.RestClientAutoConfiguration.java

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/*
 * Copyright 2012-2018 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.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.autoconfigure.elasticsearch.rest;

import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.Credentials;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.context.properties.PropertyMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * {@link EnableAutoConfiguration Auto-configuration} for Elasticsearch REST clients.
 *
 * @author Brian Clozel
 * @since 2.1.0
 */
@Configuration
@ConditionalOnClass(RestClient.class)
@EnableConfigurationProperties(RestClientProperties.class)
public class RestClientAutoConfiguration {

    private final RestClientProperties properties;

    private final ObjectProvider<RestClientBuilderCustomizer> builderCustomizers;

    public RestClientAutoConfiguration(RestClientProperties properties,
            ObjectProvider<RestClientBuilderCustomizer> builderCustomizers) {
        this.properties = properties;
        this.builderCustomizers = builderCustomizers;
    }

    @Bean
    @ConditionalOnMissingBean
    public RestClient restClient(RestClientBuilder builder) {
        return builder.build();
    }

    @Bean
    @ConditionalOnMissingBean
    public RestClientBuilder restClientBuilder() {
        HttpHost[] hosts = this.properties.getUris().stream().map(HttpHost::create).toArray(HttpHost[]::new);
        RestClientBuilder builder = RestClient.builder(hosts);
        PropertyMapper map = PropertyMapper.get();
        map.from(this.properties::getUsername).whenHasText().to((username) -> {
            CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
            Credentials credentials = new UsernamePasswordCredentials(this.properties.getUsername(),
                    this.properties.getPassword());
            credentialsProvider.setCredentials(AuthScope.ANY, credentials);
            builder.setHttpClientConfigCallback(
                    (httpClientBuilder) -> httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));
        });
        this.builderCustomizers.orderedStream().forEach((customizer) -> customizer.customize(builder));
        return builder;
    }

    @Configuration
    @ConditionalOnClass(RestHighLevelClient.class)
    public static class RestHighLevelClientConfiguration {

        @Bean
        @ConditionalOnMissingBean
        public RestHighLevelClient restHighLevelClient(RestClientBuilder restClientBuilder) {
            return new RestHighLevelClient(restClientBuilder);
        }

    }

}