copy (Source)

When To Use

Use copy to duplicate an existing source table and apply a different compute pipeline.

This is the cleanest way to branch one expensive dataset into multiple monitor-specific transformations.

Syntax

sources:
  rawSensors:
    type: ipmi
    computes:
    - type: awk
      script: ${file::sdr_formatter.awk}

  sensorStatus:
    type: copy
    from: ${source::monitors.sensor.collect.sources.rawSensors}
    computes:
    - type: keepOnlyMatchingLines
      column: 3
      regExp: "(ok|degraded|failed)"

Properties

Recommended Pattern

• Use copy to avoid rerunning expensive protocol calls.
• Keep the original source as the canonical raw dataset.
• Name copies by purpose (statusView, capacityView, errorsView).

Common Mistakes

• Copying already over-transformed data instead of the raw source.
• Creating deep copy chains (copy of copy of copy) that hurt readability.
• Forgetting that copied tables preserve row/column order, including any quirks.

Community Examples

• IpmiTool^[1]
• AMDRadeon^[2]