[HDDS-11546] Implement regex matching operation for --filter option of ldb scan command

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Labels: pull-request-available
• Assignee: Tejaskriya Madhan
• Reporter: Tejaskriya Madhan
• Created: 08/Oct/24 09:56
• Updated: 14/Oct/24 03:30
• Resolved: 10/Oct/24 14:17

Description

Currently, `ozone debug ldb scan` command has a `--filter` option supporting the following operations for the records stored in the rocksDB: `EQUALS, LESSER, GREATER`.

Adding support for matching with regex will be useful while debugging as any pattern of keys can be found with it.

For example, if a value has many fields like [name, location->[address, DN, IP], version, lastUpdateTime]:

using the option `--filter={name:regex:^a.*}` will display records with name that start with the letter 'a'

A fields along with the regex that should be used to is given to the command, and only those records passing the condition it will be shown.

 

eg.) ozone debug ldb --db=/data/metadata/om.db scan --cf=volumeTable --filter="usedNamespace:greater:2,adminName:regex:^a.*a$" 

--> Will show only the records having usedNamespace>2 and adminName starting and ending with the letter 'a'.

 

Issue Links

• relates to: HDDS-11573 Remove lib/gson-2.10.1.jar
• links to: GitHub Pull Request #7289