Currently, multiple languages (nodejs, java, php, python) construct intermediate staging subdirectories named owl-bot-staging prior to running post-processing and code combination tools.
While all generators share the need to stage generated artifacts before finalizing output, each language package independently defines hardcoded string constants and custom directory nesting logic.
Standardizing owl-bot-staging creation, path formatting, and cleanup lifecycle under a common internal pattern will reduce duplicated code, prevent parallel-build race conditions during cleanup, and maintain consistent staging directory layouts across all SDK generators.

Language Code Locations (at time of issue)

1. Node.js Generator

• Staging Location: internal/librarian/nodejs/generate.go#L118 (Local File)

  stagingDir := filepath.Join(repoRoot, "owl-bot-staging", library.Name, version)

• Cleanup / Post-process Location: internal/librarian/nodejs/generate.go#L392 (Local File)

  stagingDir := filepath.Join(repoRoot, "owl-bot-staging", library.Name)

2. Java Generator

• Constant Location: internal/librarian/java/postprocess.go#L38 (Local File)

  const owlbotStagingDir = "owl-bot-staging"

• Staging Path Helper: internal/librarian/java/postprocess.go#L151 (Local File)

  func stagingDir(outDir string) string { return filepath.Join(outDir, owlbotStagingDir) }

3. PHP Generator

• Constant Location: internal/librarian/php/generate.go#L38 (Local File)

  const owlBotStagingDir = "owl-bot-staging"

• Staging Construction: internal/librarian/php/generate.go#L93 (Local File)

  stagingDir := filepath.Join(owlBotStagingDir, library.Name)

4. Python Generator

• Staging Location: internal/librarian/python/generate.go#L254 (Local File)

  stagingDir := filepath.Join(generationRoot, "owl-bot-staging", library.Name, stagingChildDirectory)

ngDir := filepath.Join(generationRoot, "owl-bot-staging", library.Name, stagingChildDirectory)