Michael Breu created EMAIL-191:
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Summary: MultiPartEmail attach( final DataSource ds, ...) closes
the inputstream in data source ds, before reading it.
Key: EMAIL-191
URL: https://issues.apache.org/jira/browse/EMAIL-191
Project: Commons Email
Issue Type: Bug
Affects Versions: 1.5
Environment: Tested with email-commons 1.5 in tomcat 7.0.x on Windows
and Linux.
The problem is quite straight forward visible in source code
{{.org.apache.commons.mail.MultiPartEmail}} line 420 . Therefore I abstain from
constructing a self contained example.
Reporter: Michael Breu
We are creating watermarked pdf's and send them on-the-fly as email
attachments. The pdf is created in a separate thread and piped into a
PipedInputStream.
This runs into a Pipe closed IOException, because {{MultiPartEmail attach(
final DataSource ds, final String name, final String description)}} closes the
inputstream in data source ds, before reading it.
Comment say's that this is due to windows file locking
*Expected behavior*: The input stream is read before closing.
*Workaround*: Buffer the Stream into a ByteArrayInputStream. (This has the
disadvantage that we have a high memory load, due to prepared, but not yet sent
attachments.
*Minimum solution*: Document the problem in the java doc.
*Optimal solution*: It is not really clear to me, what the file locking problem
is: Either provide two alternative methods for Files and InputStreams. Or
improve the file handling.
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