Move samples from spring-cloud-stream

transform/src/main/java/demo/LoggingTransformer.java

@@ -0,0 +1,55 @@
+/*
+ * 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
+ *
+ *      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 demo;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+import org.springframework.cloud.stream.messaging.Processor;
+import org.springframework.integration.annotation.ServiceActivator;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@EnableBinding(Processor.class)
+@ConfigurationProperties("module.logging")
+public class LoggingTransformer {
+
+	private static Logger logger = LoggerFactory.getLogger(LoggingTransformer.class);
+
+	/**
+	 * The name to include in the log message
+	 */
+	private String name = "logging";
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	@ServiceActivator(inputChannel = Processor.INPUT, outputChannel = Processor.OUTPUT)
+	public Object transform(Object payload) {
+		logger.info("Transformed by " + this.name + ": " + payload);
+		return payload;
+	}
+
+}