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Posted to issues@metron.apache.org by "Stefan Kupstaitis-Dunkler (JIRA)" <ji...@apache.org> on 2019/02/13 13:07:00 UTC
[jira] [Created] (METRON-2002) Number of escape backslashes in
REGEXP_MATCH Stellar function is inconsistent
Stefan Kupstaitis-Dunkler created METRON-2002:
-------------------------------------------------
Summary: Number of escape backslashes in REGEXP_MATCH Stellar function is inconsistent
Key: METRON-2002
URL: https://issues.apache.org/jira/browse/METRON-2002
Project: Metron
Issue Type: Bug
Reporter: Stefan Kupstaitis-Dunkler
When I want to escape a character in REGEXP_MATCH I need to escape it with 2 backslashes in the Stellar command line and 4 backslashes when you actually deploy it via the Metron config. Ideally it should be only one backslash in both cases, but a consistent behaviour as a starting point and a mention in the docs to escape the escape characters would be sufficient.
Simple example:
* ip_address := '10.10.10.10'`
* This matches on Stellar command line interface: `REGEXP_MATCH(ip_address, 10\\.10
.10
.10)`
* This works when configured for a running topology: `REGEXP_MATCH(ip_address, 10\\\\.10\\\\.10\\\\.10)`
* Any other amount of slashes in both cases produces an error or no match.
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