Replace file when exists not working in Spring Integration Smb - spring-integration

Question

I'm trying to write files to smb folder, it works fine for the first write but when the same file is written again it throws error
Caused by: org.springframework.core.NestedIOException: Failed to rename [/remote-target-dir/smbTest.test.writing] to [/remote-target-dir/smbTest.test].; nested exception is jcifs.smb.SmbException: Cannot create a file when that file already exists.
Im' using the FileTransferringMessageHandler which has FileExistsMode.REPLACE as default file exists mode but still it fails to replace.
I debugged into the SmbSession class, when flow reaches to this code in rename(String _pathFrom, String _pathTo) method
if (this.smbShare.isReplaceFile() && smbFileTo.exists()) {
smbFileTo.delete();
}
I see that the smbShare's isReplaceFile() is false, which is why I assume it is unable to delete the previous file with the same name
Here is the full code:
Connection:
#Bean
public SmbSessionFactory smbSessionFactory() {
SmbSessionFactory smbSession = new SmbSessionFactory();
smbSession.setHost("localhost");
smbSession.setPort(445);
smbSession.setDomain("DESKTOP-07O79IT");
smbSession.setUsername("Dell");
smbSession.setPassword("changeIt");
smbSession.setShareAndDir("Users\\DELL\\Desktop\\Shared");
smbSession.setSmbMinVersion(DialectVersion.SMB210);
smbSession.setSmbMaxVersion(DialectVersion.SMB311);
return smbSession;
}
Outbound to send files to smb:
#ServiceActivator(inputChannel = "storeToSmb")
#Bean
public MessageHandler smbMessageHandler(SmbSessionFactory smbSessionFactory) {
FileTransferringMessageHandler<SmbFile> handler =
new FileTransferringMessageHandler<>(smbSessionFactory);
handler.setRemoteDirectoryExpression(
new LiteralExpression("/remote-target-dir"));
handler.setFileNameGenerator(m -> "smbTest.test");
handler.setAutoCreateDirectory(true);
return handler;
}
Gateway:
#Override
public void run(ApplicationArguments args) throws Exception {
File file = new File("smbFile.txt");
try(FileWriter writer = new FileWriter(file)){
writer.write("This is sample smb write");
messageGateway.storeToSmb(file);
}catch (IOException e){
System.out.println("Error: "+e);
}
}
Can you please help with this issue?

Answer 1

The SmbSessionFactory must come with the setReplaceFile(true). The FileTransferringMessageHandler does nothing about its dependency and can't mutate it although it has its own logic about that FileExistsMode.REPLACE.