[DAFFODIL-2266] Daffodil does not validate compatability with pre-compiled parsers

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 3.2.0
• Component/s: Middle "End"
• Assignee: Steve Lawrence
• Reporter: Brandon Sloane
• Created: 06/Jan/20 17:02
• Updated: 28/Sep/21 15:03
• Resolved: 23/Sep/21 13:59

Description

In general, we do not claim to support untrusted input as pre-compiled parsers, so not validating pre-compiled parsers is reasonable.

However, a common mistake users are likely to make is using a parser compiled with a different version of Daffodil. While this is not supported, we do not fail gracefully, instead throwing the below unhandled exception. We should instead detect this case, and issue a user-friendly error indicating the problem.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!! An unexpected exception occurred. This is a bug! !!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Please report this bug and help us fix it:

https://daffodil.apache.org/community/#issue-tracker

Please include the following exception, the command you
ran, and any input, schema, or tdml files used that led
to this bug.

java.io.InvalidClassException: org.apache.daffodil.processors.DataProcessor; local class incompatible: stream classdesc serialVersionUID = 875658728054701677, local class serialVersionUID = 886020291118569922
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:699)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1885)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1885)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
at org.apache.daffodil.compiler.Compiler.reload(Compiler.scala:293)
at org.apache.daffodil.compiler.Compiler.reload(Compiler.scala:276)
at org.apache.daffodil.Main$.$anonfun$createProcessorFromParser$1(Main.scala:638)
at org.apache.daffodil.util.Timer$.getTimeResult(Timer.scala:76)
at org.apache.daffodil.util.Timer$.getResult(Timer.scala:35)
at org.apache.daffodil.Main$.createProcessorFromParser(Main.scala:638)
at org.apache.daffodil.Main$.run(Main.scala:819)
at org.apache.daffodil.Main$.main(Main.scala:1388)
at org.apache.daffodil.Main.main(Main.scala