#497 - Add reactive Spring Data Elasticsearch example.

elasticsearch/reactive/src/main/java/example/springdata/elasticsearch/conference/ApplicationConfiguration.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.conference;
+
+import javax.annotation.PostConstruct;
+import java.io.IOException;
+import java.util.Arrays;
+
+import org.elasticsearch.ElasticsearchStatusException;
+import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
+import org.elasticsearch.client.RequestOptions;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.support.DefaultConversionService;
+import org.springframework.data.elasticsearch.client.ClientConfiguration;
+import org.springframework.data.elasticsearch.client.RestClients;
+import org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient;
+import org.springframework.data.elasticsearch.client.reactive.ReactiveRestClients;
+import org.springframework.data.elasticsearch.config.AbstractReactiveElasticsearchConfiguration;
+import org.springframework.data.elasticsearch.core.ElasticsearchEntityMapper;
+import org.springframework.data.elasticsearch.core.EntityMapper;
+import org.springframework.data.elasticsearch.core.ReactiveElasticsearchOperations;
+import org.springframework.data.elasticsearch.core.geo.GeoPoint;
+import org.springframework.data.elasticsearch.repository.config.EnableReactiveElasticsearchRepositories;
+import reactor.test.StepVerifier;
+
+/**
+ * @author Christoph Strobl
+ */
+@Configuration
+@EnableReactiveElasticsearchRepositories
+class ApplicationConfiguration extends AbstractReactiveElasticsearchConfiguration {
+
+	@Autowired ReactiveElasticsearchOperations operations;
+	@Autowired ConferenceRepository repository;
+
+	@Bean
+	@Override
+	public ReactiveElasticsearchClient reactiveElasticsearchClient() {
+		return ReactiveRestClients.create(ClientConfiguration.localhost());
+	}
+
+	@Override
+	public EntityMapper entityMapper() {
+		return new ElasticsearchEntityMapper(elasticsearchMappingContext(),
+				new DefaultConversionService());
+	}
+
+	@PostConstruct
+	public void insertDataSample() {
+
+		try {
+			RestClients.create(ClientConfiguration.localhost()).rest().indices().create(new CreateIndexRequest("conference-index"), RequestOptions.DEFAULT);
+		} catch (IOException | ElasticsearchStatusException e) {
+			// just ignore it
+		}
+
+		// Remove all documents
+		repository.deleteAll().subscribe();
+
+		// Save data sample
+		repository.save(Conference.builder().date("2014-11-06").name("Spring eXchange 2014 - London")
+				.keywords(Arrays.asList("java", "spring")).location(new GeoPoint(51.500152D, -0.126236D)).build()).then().as(StepVerifier::create).verifyComplete();
+		repository.save(Conference.builder().date("2014-12-07").name("Scala eXchange 2014 - London")
+				.keywords(Arrays.asList("scala", "play", "java")).location(new GeoPoint(51.500152D, -0.126236D)).build()).then().as(StepVerifier::create).verifyComplete();
+		repository.save(Conference.builder().date("2014-11-20").name("Elasticsearch 2014 - Berlin")
+				.keywords(Arrays.asList("java", "elasticsearch", "kibana")).location(new GeoPoint(52.5234051D, 13.4113999))
+				.build()).then().as(StepVerifier::create).verifyComplete();
+		repository.save(Conference.builder().date("2014-11-12").name("AWS London 2014")
+				.keywords(Arrays.asList("cloud", "aws")).location(new GeoPoint(51.500152D, -0.126236D)).build()).then().as(StepVerifier::create).verifyComplete();
+		repository.save(Conference.builder().date("2014-10-04").name("JDD14 - Cracow")
+				.keywords(Arrays.asList("java", "spring")).location(new GeoPoint(50.0646501D, 19.9449799)).build()).then().as(StepVerifier::create).verifyComplete();
+	}
+}

elasticsearch/reactive/src/main/java/example/springdata/elasticsearch/conference/Conference.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.conference;
+
+import static org.springframework.data.elasticsearch.annotations.FieldType.*;
+
+import java.util.List;
+
+import lombok.Builder;
+import lombok.Data;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.elasticsearch.annotations.Document;
+import org.springframework.data.elasticsearch.annotations.Field;
+import org.springframework.data.elasticsearch.core.geo.GeoPoint;
+
+/**
+ * @auhtor Christoph Strobl
+ */
+@Data
+@Builder
+@Document(indexName = "conference-index", type = "geo-class-point-type", shards = 1, replicas = 0,
+		refreshInterval = "-1")
+public class Conference {
+
+	private @Id String id;
+	private String name;
+	private @Field(type = Date) String date;
+	private GeoPoint location;
+	private List<String> keywords;
+}

elasticsearch/reactive/src/main/java/example/springdata/elasticsearch/conference/ConferenceRepository.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.conference;
+
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+
+/**
+ * @author Christoph Strobl
+ */
+interface ConferenceRepository extends ReactiveCrudRepository<Conference, String> {
+
+	Flux<Conference> findAllByKeywordsContainsAndDateAfter(String keyword, String Date);
+}

elasticsearch/reactive/src/main/resources/application.properties

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+# Uncomment both entries to connect with local elasticsearch cluster
+#spring.data.elasticsearch.clusterName=elasticsearch
+#spring.data.elasticsearch.clusterNodes=localhost:9300

elasticsearch/reactive/src/test/java/example/springdata/elasticsearch/conference/ReactiveElasticsearchOperationsTest.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.conference;
+
+import static org.assertj.core.api.Assertions.*;
+
+import example.springdata.elasticsearch.util.ElasticsearchAvailable;
+import reactor.test.StepVerifier;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.elasticsearch.core.ReactiveElasticsearchOperations;
+import org.springframework.data.elasticsearch.core.query.Criteria;
+import org.springframework.data.elasticsearch.core.query.CriteriaQuery;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Test case to show Spring Data Elasticsearch functionality.
+ *
+ * @author Christoph Strobl
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = ApplicationConfiguration.class)
+public class ReactiveElasticsearchOperationsTest {
+
+	public static @ClassRule ElasticsearchAvailable elasticsearchAvailable = ElasticsearchAvailable.onLocalhost();
+
+	private static final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
+
+	@Autowired ReactiveElasticsearchOperations operations;
+
+	@Test
+	public void textSearch() {
+
+		String expectedDate = "2014-10-29";
+		String expectedWord = "java";
+		CriteriaQuery query = new CriteriaQuery(
+				new Criteria("keywords").contains(expectedWord).and("date").greaterThanEqual(expectedDate));
+
+		operations.find(query, Conference.class) //
+				.as(StepVerifier::create) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.verifyComplete();
+	}
+
+	void verify(Conference it, String expectedWord, String expectedDate) {
+
+		assertThat(it.getKeywords()).contains(expectedWord);
+		try {
+			assertThat(format.parse(it.getDate())).isAfter(format.parse(expectedDate));
+		} catch (ParseException e) {
+			fail("o_O", e);
+		}
+	}
+}

elasticsearch/reactive/src/test/java/example/springdata/elasticsearch/conference/ReactiveElasticsearchRepositoryTest.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.conference;
+
+import static org.assertj.core.api.Assertions.*;
+
+import example.springdata.elasticsearch.util.ElasticsearchAvailable;
+import reactor.test.StepVerifier;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Test case to show reactive Spring Data Elasticsearch repository functionality.
+ *
+ * @author Christoph Strobl
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = ApplicationConfiguration.class)
+public class ReactiveElasticsearchRepositoryTest {
+
+	public static @ClassRule ElasticsearchAvailable elasticsearchAvailable = ElasticsearchAvailable.onLocalhost();
+
+	private static final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
+
+	@Autowired ConferenceRepository repository;
+
+	@Test
+	public void textSearch() {
+
+		String expectedDate = "2014-10-29";
+		String expectedWord = "java";
+
+		repository.findAllByKeywordsContainsAndDateAfter(expectedWord, expectedDate) //
+				.as(StepVerifier::create) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.consumeNextWith(it -> verify(it, expectedWord, expectedDate)) //
+				.verifyComplete();
+	}
+
+	void verify(Conference it, String expectedWord, String expectedDate) {
+
+		assertThat(it.getKeywords()).contains(expectedWord);
+		try {
+			assertThat(format.parse(it.getDate())).isAfter(format.parse(expectedDate));
+		} catch (ParseException e) {
+			fail("o_O", e);
+		}
+	}
+}

elasticsearch/reactive/src/test/java/example/springdata/elasticsearch/util/ElasticsearchAvailable.java

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+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://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 example.springdata.elasticsearch.util;
+
+import java.io.IOException;
+
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpHead;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.assertj.core.api.Assumptions;
+import org.junit.AssumptionViolatedException;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * @author Christoph Strobl
+ */
+public class ElasticsearchAvailable implements TestRule {
+
+	private final String url;
+
+	private ElasticsearchAvailable(String url) {
+		this.url = url;
+	}
+
+	public static ElasticsearchAvailable onLocalhost() {
+		return new ElasticsearchAvailable("http://localhost:9200");
+	}
+
+	@Override
+	public Statement apply(Statement base, Description description) {
+
+		return new Statement() {
+
+			@Override
+			public void evaluate() throws Throwable {
+
+				checkServerRunning();
+				base.evaluate();
+			}
+		};
+	}
+
+	private void checkServerRunning() {
+
+		try (CloseableHttpClient client = HttpClientBuilder.create().build()) {
+			CloseableHttpResponse response = client.execute(new HttpHead(url));
+			if (response != null && response.getStatusLine() != null) {
+				Assumptions.assumeThat(response.getStatusLine().getStatusCode()).isEqualTo(200);
+			}
+		} catch (IOException e) {
+			throw new AssumptionViolatedException(String.format("Elasticsearch Server seems to be down. %s", e.getMessage()));
+		}
+	}
+}