[FLUME-2853] Allow for YAML configuration files

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.9.0
• Component/s: Configuration
• Labels: 1.9
• Assignee: Unassigned
• Reporter: Christopher White
• Created: 09/Dec/15 04:10
• Updated: 02/Jul/22 21:14

Description

Allow for YAML formatted configuration files (http://www.yaml.org/spec/1.2/spec.html).

This provides:

• A more condensed format than properties files
• Less 'typo' prone for repetitive common prefixes
• Ability to define a value once and reuse via references (see spec - Structures - Example 2.10

For example compare the following properties file and potential YAML equivalent:

agent.properties

host1.sources = source1
host1.channels = channel1
host1.sinks = sink1

host1.sources.source1.type = seq
host1.sources.source1.channels = channel1

host1.channels.channel1.type = memory
host1.channels.channel1.capacity = 10000

host1.sinks.sink1.type = null
host1.sinks.sink1.channel = channel1

agent.yaml

host1:
  sources:
    _: source1
    source1:
      type: seq
      channels: channel1
      
  channels:
    _: channel1
    channel1:
      type: memory
      capacity: 10000
      
  sinks:
    _: sink1
    sink1:
      type: null
      channel: channel1