CODEWITHSUNDEEP
javaspringspring-integration
blurfus
blurfus

Reputation: 14031

How to copy a given file from a pre-determined directory (by filename)

I am using Spring Integration here.

I have a directory where files are being copied to by another service activator.

The files need to stay there until their status on the DB is processed - then I need to move the files to the next directory where they will be sent (via SFTP) to their final destination.

I have a polling channel that fetches a list of files in the processed status (from DB). Then I split the incoming list (each Message now contains the name of the file I need to move to the next directory in its payload.)

How do I tell the inbound-channel-adapter to read only the given file (I have the full path to the file) from the defined directory and copy/move it to the next directory?

This is my config so far:

<!-- File Adapters: Inbound -->
<file:inbound-channel-adapter 
          id="filesInChannelAdapter"
          filename-regex="/^#jsonPath(payload,'$.filename')$/"   <<< this does not work     
          directory="${inbound.dir}" />

<!-- Service Activators -->
<int:service-activator input-channel="filesInChannelAdapter"
                       output-channel="filesOutChannelAdapter"
                       id="fileCopyActivator"
                       method="handleFile"
                       ref="fileCopyHandler"/>

 <!-- File Adapters: Outbound -->
 <file:outbound-channel-adapter 
        id="filesOutChannelAdapter"
        preserve-timestamp="true"
        delete-source-files="true"
        directory="${outbound.dir}"/>

Is there a way to read a file in without having to poll a directory?

How else could I copy the file from directory A to B after querying its status from the DB? (via a REST endpoint)

Upvotes: 0

Views: 83

Answers (1)

Artem Bilan
Artem Bilan

Reputation: 121282

The FileWritingMessageHandler (<int-file:outbound-channel-adapter>) can do that for you. So, you REST endpoint brings a file name, you check it state in DB, e.g. via <filter> and then go to the <int-file:outbound-channel-adapter> with the File payload and Files.move() will be performed for you.

Upvotes: 1

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