Module: ActiveMutator::AtomicFile

Defined in:
lib/active_mutator/atomic_file.rb

Overview

flock-guarded write-to-temp + rename. Concurrent runs in one repo (an agent plus a human — the dev-loop case) must not corrupt cache or ledger.

Class Method Summary collapse

Class Method Details

.write(path, content) ⇒ Object 



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# File 'lib/active_mutator/atomic_file.rb', line 5

def self.write(path, content)
  File.open("#{path}.lock", File::CREAT | File::RDWR, 0o644) do |lock|
    lock.flock(File::LOCK_EX)
    tmp = "#{path}.tmp#{Process.pid}"
    File.write(tmp, content)
    File.rename(tmp, path)
  end
  nil
end