elasticsearch Java High Level REST Client API 使用(二)

原文链接： https://my.oschina.net/u/3795437/blog/3022874

前言：

 目前对es版本进行了升级，从5.5.3升级到了6.3.2 ，故对之前的集成方式做了微调。

elasticsearch Java High Level REST Client API 使用（一）

其他API使用请参考官方6.3.2文档 -> 6.3官方API

1.maven

        
        
            org.elasticsearch
            elasticsearch
            6.3.2
        
        
        
            org.elasticsearch.client
            elasticsearch-rest-client
            6.3.2
        
        
        
            org.elasticsearch.client
            elasticsearch-rest-high-level-client
            6.3.2
        

 

2.configuration 配置

@Configuration
public class ElasticsearchConfiguration implements FactoryBean, InitializingBean, DisposableBean {
    private static final Logger LOGGER = LoggerFactory.getLogger(ElasticsearchConfiguration.class);

    @Value("${spring.data.elasticsearch.host}")
    private String host;
    @Value("${spring.data.elasticsearch.port}")
    private int port;
    @Value("${spring.data.elasticsearch.username}")
    private String username;
    @Value("${spring.data.elasticsearch.password}")
    private String password;

    private RestHighLevelClient restHighLevelClient;

    @Override
    public void destroy() throws Exception {
        try {
            LOGGER.info("Closing elasticSearch client");
            if (restHighLevelClient != null) {
                restHighLevelClient.close();
            }
        } catch (final Exception e) {
            LOGGER.error("Error closing ElasticSearch client: ", e);
        }
    }

    @Override
    public RestHighLevelClient getObject() throws Exception {
        return restHighLevelClient;
    }

    @Override
    public Class getObjectType() {
        return RestHighLevelClient.class;
    }

    @Override
    public boolean isSingleton() {
        return false;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        buildClient();
    }

    protected void buildClient() {
        final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password));
        RestClientBuilder builder = RestClient.builder(new HttpHost(host, port))
                .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
                    @Override
                    public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                        return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                    }
                });

        restHighLevelClient = new RestHighLevelClient(builder);
    }

}

 

3.bulkprocessor 工具类

@Service
public class ElasticSearchUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(ElasticSearchUtil.class);

    @Autowired
    private RestHighLevelClient restHighLevelClient;

    private BulkProcessor bulkProcessor;

    @PostConstruct
    public void init() {
        BulkProcessor.Listener listener = new BulkProcessor.Listener() {
            @Override
            public void beforeBulk(long executionId, BulkRequest request) {
                int numberOfActions = request.numberOfActions();
                LOGGER.info("Executing bulk [{}] with {} requests", executionId, numberOfActions);
            }

            @Override
            public void afterBulk(long executionId, BulkRequest request, BulkResponse response) {
                if (response.hasFailures()) {
                    LOGGER.error("Bulk [{}] executed with failures,response = {}", executionId, response.buildFailureMessage());
                } else {
                    LOGGER.info("Bulk [{}] completed in {} milliseconds", executionId, response.getTook().getMillis());
                }
                BulkItemResponse[] responses = response.getItems();
            }

            @Override
            public void afterBulk(long executionId, BulkRequest request, Throwable failure) {
                LOGGER.error("Failed to execute bulk", failure);
            }
        };

        BulkProcessor bulkProcessor = BulkProcessor.builder(restHighLevelClient::bulkAsync, listener)
                // 1000条数据请求执行一次bulk
                .setBulkActions(1000)
                // 5mb的数据刷新一次bulk
                .setBulkSize(new ByteSizeValue(5L, ByteSizeUnit.MB))
                // 并发请求数量, 0不并发, 1并发允许执行
                .setConcurrentRequests(0)
                // 固定1s必须刷新一次
                .setFlushInterval(TimeValue.timeValueSeconds(1L))
                // 重试5次，间隔1s
                .setBackoffPolicy(BackoffPolicy.constantBackoff(TimeValue.timeValueSeconds(1L), 5))
                .build();
        this.bulkProcessor = bulkProcessor;
    }

    @PreDestroy
    public void destroy() {
        try {
            bulkProcessor.awaitClose(30, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            LOGGER.error("Failed to close bulkProcessor", e);
        }
        LOGGER.info("bulkProcessor closed!");
    }

    /**
     * 修改
     *
     * @param request
     * @throws IOException
     */
    public void update(UpdateRequest request) {
        this.bulkProcessor.add(request);
    }

    /**
     * 新增
     *
     * @param request
     */
    public void insert(IndexRequest request) {
        this.bulkProcessor.add(request);
    }
}

 

 

转载于:https://my.oschina.net/u/3795437/blog/3022874