[METRON-1493] Unhelpful Error Message When Assignment Expressions Fail

• Type: Improvement
• Status: Done
• Priority: Major
• Resolution: Done
• Affects Version/s: 0.4.2
• Fix Version/s: 0.5.0
• Assignee: Nick Allen
• Reporter: Nick Allen
• Created: 16/Mar/18 13:04
• Updated: 22/May/18 19:34
• Resolved: 21/Mar/18 17:21

Description

When running a bad assignment expression in the REPL, the error message provides no help as to why the expression fails. It only says that the expression fails, which is obvious. This needs to report back to the user the root cause of the assignment expression failing.

[Stellar]>>> p := 0/0
[!] Assignment expression failed
java.lang.IllegalArgumentException: Assignment expression failed
	at org.apache.metron.stellar.common.shell.StellarResult.error(StellarResult.java:115)
	at org.apache.metron.stellar.common.shell.specials.AssignmentCommand.execute(AssignmentCommand.java:82)
	at org.apache.metron.stellar.common.shell.DefaultStellarShellExecutor.execute(DefaultStellarShellExecutor.java:252)
	at org.apache.metron.stellar.common.shell.cli.StellarShell.execute(StellarShell.java:357)
	at org.jboss.aesh.console.AeshProcess.run(AeshProcess.java:53)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

Issue Links

• links to: GitHub Pull Request #966