feat: opensearch init

backend/src/main/java/com/openisle/search/OpenSearchConfig.java

@@ -0,0 +1,78 @@
+package com.openisle.search;
+
+import org.apache.hc.client5.http.auth.AuthScope;
+import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
+import org.apache.hc.client5.http.impl.auth.BasicCredentialsProvider;
+import org.apache.hc.core5.http.HttpHost;
+import org.opensearch.client.RestClient;
+import org.opensearch.client.RestClientBuilder;
+import org.opensearch.client.json.jackson.JacksonJsonpMapper;
+import org.opensearch.client.opensearch.OpenSearchClient;
+import org.opensearch.client.transport.rest_client.RestClientTransport;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.util.StringUtils;
+
+@Configuration
+@EnableConfigurationProperties(OpenSearchProperties.class)
+public class OpenSearchConfig {
+
+  @Bean(destroyMethod = "close")
+  @ConditionalOnProperty(prefix = "app.search", name = "enabled", havingValue = "true")
+  public RestClient openSearchRestClient(OpenSearchProperties properties) {
+    RestClientBuilder builder = RestClient.builder(
+      new HttpHost(properties.getScheme(), properties.getHost(), properties.getPort())
+    );
+    if (StringUtils.hasText(properties.getUsername())) {
+      BasicCredentialsProvider credentialsProvider = new BasicCredentialsProvider();
+      credentialsProvider.setCredentials(
+        new AuthScope(properties.getHost(), properties.getPort()),
+        new UsernamePasswordCredentials(
+          properties.getUsername(),
+          properties.getPassword() != null ? properties.getPassword().toCharArray() : new char[0]
+        )
+      );
+      builder.setHttpClientConfigCallback(httpClientBuilder ->
+        httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider)
+      );
+    }
+    return builder.build();
+  }
+
+  @Bean(destroyMethod = "close")
+  @ConditionalOnBean(RestClient.class)
+  public RestClientTransport openSearchTransport(RestClient restClient) {
+    return new RestClientTransport(restClient, new JacksonJsonpMapper());
+  }
+
+  @Bean
+  @ConditionalOnBean(RestClientTransport.class)
+  public OpenSearchClient openSearchClient(RestClientTransport transport) {
+    return new OpenSearchClient(transport);
+  }
+
+  @Bean
+  @ConditionalOnBean(OpenSearchClient.class)
+  public SearchIndexInitializer searchIndexInitializer(
+    OpenSearchClient client,
+    OpenSearchProperties properties
+  ) {
+    return new SearchIndexInitializer(client, properties);
+  }
+
+  @Bean
+  @ConditionalOnBean(OpenSearchClient.class)
+  public SearchIndexer openSearchIndexer(OpenSearchClient client, OpenSearchProperties properties) {
+    return new OpenSearchIndexer(client);
+  }
+
+  @Bean
+  @ConditionalOnMissingBean(SearchIndexer.class)
+  public SearchIndexer noopSearchIndexer() {
+    return new NoopSearchIndexer();
+  }
+}