[MINIFICPP-160] nifi-minifi-cpp throws "Invalid File Filter regex" error for GetFile's default "File Filter" property

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.1.0
• Assignee: Ben Qiu
• Reporter: Randy Gelhausen
• Created: 03/Oct/16 16:31
• Updated: 28/Sep/17 15:14
• Resolved: 15/Nov/16 13:17

Description

I used the 0.0.1 minifi converter toolkit for a flow containing a GetFile processor with default "Filter Filter" properties ([^\.].*). It generated the following config:

• name: GetFile
  class: org.apache.nifi.processors.standard.GetFile
  max concurrent tasks: 1
  scheduling strategy: TIMER_DRIVEN
  scheduling period: 1 sec
  penalization period: 30 sec
  yield period: 1 sec
  run duration nanos: 0
  auto-terminated relationships list: []
  Properties:
  Batch Size: '10'
  File Filter: '[^\.].*'
  Ignore Hidden Files: 'true'
  Input Directory: /host-data/metrics
  Keep Source File: 'false'
  Maximum File Age:
  Maximum File Size:
  Minimum File Age: 10 sec
  Minimum File Size: 0 B
  Path Filter:
  Polling Interval: 0 sec
  Recurse Subdirectories: 'true'

However, at runtime, minifi gives an invalid regex error:
[2016-10-03 16:31:11.318] [minifi log] [error] Invalid File Filter regex: regex_error.