Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

spring-integration/src/main/java/com/baeldung/samples/FileCopyConfig.java

@@ -0,0 +1,73 @@
+package com.baeldung.samples;
+
+import java.io.File;
+import java.util.Scanner;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.support.AbstractApplicationContext;
+import org.springframework.integration.annotation.InboundChannelAdapter;
+import org.springframework.integration.annotation.Poller;
+import org.springframework.integration.annotation.ServiceActivator;
+import org.springframework.integration.channel.DirectChannel;
+import org.springframework.integration.config.EnableIntegration;
+import org.springframework.integration.core.MessageSource;
+import org.springframework.integration.file.FileReadingMessageSource;
+import org.springframework.integration.file.FileWritingMessageHandler;
+import org.springframework.integration.file.filters.SimplePatternFileListFilter;
+import org.springframework.integration.file.support.FileExistsMode;
+import org.springframework.messaging.MessageChannel;
+import org.springframework.messaging.MessageHandler;
+
+@Configuration
+@EnableIntegration
+public class FileCopyConfig {
+
+    public final String INPUT_DIR = "source";
+    public final String OUTPUT_DIR = "target";
+    public final String FILE_PATTERN = "*.jpg";
+
+    @Bean
+    public MessageChannel fileChannel() {
+        return new DirectChannel();
+    }
+
+    @Bean
+    @InboundChannelAdapter(value = "fileChannel", poller = @Poller(fixedDelay = "10000"))
+    public MessageSource<File> fileReadingMessageSource() {
+        FileReadingMessageSource sourceReader = new FileReadingMessageSource();
+        sourceReader.setDirectory(new File(INPUT_DIR));
+        sourceReader.setFilter(new SimplePatternFileListFilter(FILE_PATTERN));
+        return sourceReader;
+    }
+
+    @Bean
+    @ServiceActivator(inputChannel = "fileChannel")
+    public MessageHandler fileWritingMessageHandler() {
+        FileWritingMessageHandler handler = new FileWritingMessageHandler(new File(OUTPUT_DIR));
+        handler.setFileExistsMode(FileExistsMode.REPLACE);
+        handler.setExpectReply(false);
+        return handler;
+    }
+
+    public static void main(final String... args) {
+        final AbstractApplicationContext context = new AnnotationConfigApplicationContext(FileCopyConfig.class);
+        context.registerShutdownHook();
+        final Scanner scanner = new Scanner(System.in);
+        System.out.print("Please enter a string and press <enter>: ");
+        while (true) {
+            final String input = scanner.nextLine();
+            if ("q".equals(input.trim())) {
+                context.close();
+                scanner.close();
+                break;
+            }
+        }
+        System.exit(0);
+    }
+
+}
+    
+
+

spring-integration/src/main/java/com/baeldung/samples/endpoints/Activator.java

@@ -0,0 +1,7 @@
+package com.baeldung.samples.endpoints;
+
+public interface Activator<T> {
+	
+	public void handleMessage(T input);
+
+}

spring-integration/src/main/java/com/baeldung/samples/endpoints/ActivatorImpl.java

@@ -0,0 +1,20 @@
+package com.baeldung.samples.endpoints;
+
+import java.io.File;
+import java.util.logging.Logger;
+
+import org.springframework.integration.IntegrationMessageHeaderAccessor;
+import org.springframework.messaging.Message;
+
+public class ActivatorImpl implements Activator<Message<File>>  {
+
+	@Override
+	public void handleMessage(Message<File> input) {
+		File filePayload = input.getPayload();
+		IntegrationMessageHeaderAccessor accessor = new IntegrationMessageHeaderAccessor(input);
+		Logger.getAnonymousLogger().info("The file size "+filePayload.length());
+		Logger.getAnonymousLogger().info("The time of the message "+accessor.getTimestamp());
+		
+	}
+
+}