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spring-integration

Spring Integration Read All Files as a Single Message

How do we read all the files from a directory as a single Message<List<File>>? The usecase is to send a status report by iterating all the files and reading their filenames as a single message.

Please share some guidance if a custom MessageSource has to be implemented. Thanks

Solution

  • Yes. The MessageSource could be a simple as this:

    IntegrationFlow.fromSupplier(() -> new File("myDir").list())

    Then you need to play with an appropriate trigger for the poller when you would like to list those file names.

    You also can do this as a part of a handle() as a reaction to some incoming event, e.g. you ask for those names from some user call.