Refactoring dynamic source destination samples

source-samples/dynamic-destination-source-kafka/src/main/java/demo/DynamicDestinationSourceApplication.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2015 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 demo;
+
+import java.util.Map;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.messaging.Message;
+import org.springframework.messaging.support.MessageBuilder;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.EmitterProcessor;
+import reactor.core.publisher.Flux;
+
+import static org.springframework.web.bind.annotation.RequestMethod.POST;
+
+@SpringBootApplication
+@RestController
+public class DynamicDestinationSourceApplication {
+
+	@Autowired
+	private ObjectMapper jsonMapper;
+
+	private final EmitterProcessor<Message<?>> processor = EmitterProcessor.create();
+
+	public static void main(String[] args) {
+		SpringApplication.run(DynamicDestinationSourceApplication.class, args);
+	}
+
+	@SuppressWarnings("unchecked")
+	@RequestMapping(path = "/", method = POST, consumes = "*/*")
+	@ResponseStatus(HttpStatus.ACCEPTED)
+	public void handleRequest(@RequestBody String body, @RequestHeader(HttpHeaders.CONTENT_TYPE) Object contentType) throws Exception {
+		Map<String, String> payload = jsonMapper.readValue(body, Map.class);
+		String destinationName = payload.get("id");
+		Message<?> message = MessageBuilder.withPayload(payload)
+				.setHeader("spring.cloud.stream.sendto.destination", destinationName).build();
+		processor.onNext(message);
+	}
+
+	@Bean
+	public Supplier<Flux<Message<?>>> supplier() {
+		return () -> processor;
+	}
+
+	//Following sink is used as test consumer. It logs the data received through the consumer.
+	static class TestSink {
+
+		private final Log logger = LogFactory.getLog(getClass());
+
+		@Bean
+		public Consumer<String> receive1() {
+			return data -> logger.info("Data received from customer-1..." + data);
+		}
+
+		@Bean
+		public Consumer<String> receive2() {
+			return data -> logger.info("Data received from customer-2..." + data);
+		}
+	}
+}

source-samples/dynamic-destination-source-kafka/src/main/resources/application.yml

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+spring.cloud.stream:
+  function.definition: supplier;receive1;receive2;
+  bindings:
+    receive1-in-0.destination: customerId-1
+    receive2-in-0.destination: customerId-2

source-samples/dynamic-destination-source-kafka/src/test/java/demo/ModuleApplicationTests.java

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+/*
+ * Copyright 2015 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 demo;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = DynamicDestinationSourceApplication.class)
+@WebAppConfiguration
+@DirtiesContext
+public class ModuleApplicationTests {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}