spring sftp outbound gateway - spring

Question

I need to get all files from all directories and I want to use sftp:outbound-gateway with command = "mget" (of course with filters).
The sample code
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int="http://www.springframework.org/schema/integration"
xmlns:int-sftp="http://www.springframework.org/schema/integration/sftp"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/integration/sftp http://www.springframework.org/schema/integration/sftp/spring-integration-sftp.xsd">
<bean id="sftpSessionFactory" class="org.springframework.integration.sftp.session.DefaultSftpSessionFactory">
<property name="host" value="host" />
<property name="user" value="username" />
<property name="password" value="pass" />
</bean>
<int:channel id="output">
<int:queue />
</int:channel>
<int:channel id="inboundMGetRecursive" />
<int:poller default="true" fixed-delay="5000">
</int:poller>
<int-sftp:outbound-gateway session-factory="sftpSessionFactory"
request-channel="inboundMGetRecursive"
command="mget"
expression="payload"
command-options="-R"
local-directory-expression="#remoteDirectory"
reply-channel="output"
remote-directory="${remote-directory}"/>
</beans>
works only when a code in java creates a message and send it.
public final class Main {
private static final Logger LOGGER = Logger.getLogger(Main.class);
private Main() { }
/**
* Load the Spring Integration Application Context
*
* #param args - command line arguments
*/
public static void main(final String... args) {
final AbstractApplicationContext context =
new ClassPathXmlApplicationContext("/main/resources/META-INF/spring/integration/spring-integration-context.xml");
context.registerShutdownHook();
final DirectChannel requestChannel = (DirectChannel) context.getBean("inboundMGetRecursive");
final PollableChannel replyChannel = (PollableChannel) context.getBean("output");
String dir = "/remote_directory/test/sample";
requestChannel.send(new GenericMessage<Object>(dir + "'*'"));
Message<?> result = replyChannel.receive(1000);
List<File> localFiles = (List<File>) result.getPayload();
for (File file : localFiles) {
System.out.println(file.getName());
}
System.exit(0);
}
}
I want the code to be called on start up with out a java code, like the
sftp:inbound-channel-adapter works.
Can it be done? if yes, is there a sample code or an example?

Answer 1

<int:inbound-channel-adapter channel="inboundMGetRecursive"
expression="'/remote_directory/test/sample'">
<int:poller fixed-delay="60000" />
</int:inbound-channel-adapter>
<int:sftp-outbound-gateway ...
Will invoke the gateway once a minute.
If you want to invoke it once, and once only, use a FireOnceTrigger as discussed in this answer
<int:poller trigger="myTrigger" />