Module: Instana::Snapshot::Deltable

Included in:
DockerContainer
Defined in:
lib/instana/snapshot/deltable.rb

Overview

Since:

  • 1.197.0

Instance Method Summary collapse

Instance Method Details

#delta(key, *rest, compute:, obj:, path: [key, *rest]) ⇒ Object

Since:

  • 1.197.0



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# File 'lib/instana/snapshot/deltable.rb', line 8

def delta(key, *rest, compute:, obj:, path: [key, *rest])
  val = obj[key]
  return val if val == nil

  if rest.empty?
    @__delta ||= Hash.new(0)
    cache_key = path.join('.')
    old = @__delta[cache_key]
    @__delta[cache_key] = val

    return compute.call(old, val)
  end

  delta(*rest, compute: compute, obj: val, path: path)
end