[jira] [Created] (CAMEL-7055) NullPointerException at FileInputStreamCache.(FileInputStreamCache.java:52) in connection with DataFormat.marshal

["Franz Forsthofer (JIRA)" <ji...@apache.org>]

Franz Forsthofer created CAMEL-7055:
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             Summary: NullPointerException at FileInputStreamCache.<init>(FileInputStreamCache.java:52) in connection with DataFormat.marshal
                 Key: CAMEL-7055
                 URL: https://issues.apache.org/jira/browse/CAMEL-7055
             Project: Camel
          Issue Type: Bug
          Components: camel-core
    Affects Versions: 2.12.2
            Reporter: Franz Forsthofer
            Priority: Critical
             Fix For: 2.12.3


Stack Trace:
{code}
Caused by: java.lang.NullPointerException
	at org.apache.camel.converter.stream.FileInputStreamCache.<init>(FileInputStreamCache.java:52)
	at org.apache.camel.converter.stream.CachedOutputStream.newStreamCache(CachedOutputStream.java:199)
	at org.apache.camel.processor.MarshalProcessor.process(MarshalProcessor.java:79)
{code}

Error occurs, if streamCache is true and the stream is put into the file system because the spool threashold is reached. 

The following is happening:
The Marshall Processor handels over to the DataFroamat.marshal method a CachedOutputStream instance. In the marschal method data are writtin into the output stream, when the spool threshold is reached the data are streamed into the file system. Finally the output stream is closed and the CachedOutputStream instance deletes the cached file during closing. The next processor tries to read the FileInputStreamCache and gets the NullPointerException.

Currently this problem can occur in the following DataFormat classes (because they close the stream, which is actually correct):

GzipDataFormat
CryptoDataFormat
PGPDataFormat
SerializationDataFormat
XMLSecurityDataFormat
ZipDataFormat

My proposal is not to delete the cached file during closing the output stream. The cached file shall only be closed on the onCompletion event of the route. See attached patch.






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