Re: Cannot process zip file with Groovy

What you are doing to read the zip looks okay.

Just a guess, but it could be that because you haven't written to the
output stream, it is essentially a corrupt data stream as far as NiFi
processing is concerned. What happens if you set "outputStream =
inputStream" as the last line of your callback?

Paul.

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On Fri, Feb 16, 2024 at 8:48 AM James McMahon <[email protected]> wrote:
>
> I am struggling to build a Groovy scri[t I can run from a NiFi ExecuteScript processor to extract from a zip file and stream to a tar archive.
>
> I tried to tackle it all at once and made little progress.
> I am now just trying to read the zip file, and am getting this error:
>
> ExecuteScript[id=ae3e5de5-018d-1000-ff81-b0c807b75086] Error occurred processing FlowFile: org.apache.nifi.processor.exception.ProcessException: IOException thrown from ExecuteScript[id=ae3e5de5-018d-1000-ff81-b0c807b75086]: java.util.zip.ZipException: invalid compression method
> - Caused by: java.util.zip.ZipException: invalid compression method
>
>
> This is my simplified code:
>
>
> import java.util.zip.ZipInputStream
>
> def ff = session.get()
> if (!ff) return
>
> try {
>     ff = session.write(ff, { inputStream, outputStream ->
>         def zipInputStream = new ZipInputStream(inputStream)
>         def entry = zipInputStream.getNextEntry()
>         while (entry != null) {
>             entry = zipInputStream.getNextEntry()
>         }
>     } as StreamCallback)
>
>     session.transfer(ff, REL_SUCCESS)
> } catch (Exception e) {
>     log.error('Error occurred processing FlowFile', e)
>     session.transfer(ff, REL_FAILURE)
> }
>
>
> I am able to list and unzip the file at the linux command line, but cannot get it to work from the script.
>
>
> Has anyone had success doing this? Can anyone help me get past this error?
>
>
> Thanks in advance.
>
> Jim
>
>