Command Chaining Bundle Laravel Package

Product Decisions This Supports

• Automation of Multi-Step Workflows: Enables chaining CLI commands (e.g., data migration, batch processing, or deployment pipelines) into atomic, reusable sequences without manual orchestration.
• Reduced Technical Debt: Replaces ad-hoc shell scripts or custom PHP glue code for command sequencing, centralizing logic in Symfony’s dependency injection and configuration system.
• DevOps/Release Engineering: Simplifies CI/CD pipelines by defining command chains in YAML (e.g., build:app → run-tests → deploy).
• Feature Flag for CLI Workflows: Allows gradual adoption of command chaining for complex tasks (e.g., "Run this chain only in staging").
• Build vs. Buy: Justifies using this over writing custom command orchestration, especially if the team lacks time to build robust error handling/retries.
• Use Cases:
  • Data pipelines (ETL, exports).
  • Multi-stage deployments (pre-checks, migrations, post-deployment tasks).
  • Scheduled cron jobs with dependencies (e.g., "Only run analytics if the cache is warmed").

When to Consider This Package

• Avoid If:

  • Your workflows are simple (single commands or linear scripts) → Overkill for basic use cases.
  • You need dynamic chains (e.g., runtime conditions) → Configuration is static (YAML).
  • Your team uses non-Symfony PHP → Bundle is Symfony-specific.
  • You require advanced error handling (e.g., retry logic, circuit breakers) → Package lacks built-in resilience.
  • Alternatives Exist:
    • Use Symfony’s Process component for external command chaining.
    • Leverage Makefiles or Bash scripts for lightweight orchestration.
    • Adopt a workflow engine (e.g., Temporal, AWS Step Functions) for complex pipelines.

• Consider If:

  • You’re in a Symfony/Laravel monolith and need internal command sequencing.
  • Commands share common dependencies (e.g., database connections, services).
  • You want to centralize command definitions in config (vs. scattered scripts).
  • The team prioritizes maintainability over minimal setup.

How to Pitch It (Stakeholders)

For Executives: "This package lets us automate multi-step CLI workflows (e.g., deployments, data processing) as reusable, configurable chains—reducing manual errors and script sprawl. For example, instead of writing a Bash script to run 5 commands in order, we define the sequence once in YAML and call it with a single command. This cuts dev time and makes pipelines easier to debug and update. Low risk (MIT license, minimal setup), high reward for repetitive tasks."

For Engineers: *"Need to chain Symfony console commands? This bundle lets you define sequences in config/packages/ (e.g., main-command → [sub1, sub2]), with minimal boilerplate. Key benefits:

• No more shell scripts: Chains are first-class Symfony commands.
• Dependency injection: Sub-commands access the same services as the master.
• Logging/debugging: Built-in output shows execution flow. Tradeoff: Static config (no runtime branching), but great for 80% of use cases. Alternative: Roll your own if you need dynamic logic."*

For DevOps: *"Imagine defining a deployment pipeline as a YAML chain: preflight-checks → migrations → deploy → post-deploy. This bundle lets you do that natively in Symfony, with:

• Atomic execution: Fail fast if a step errors.
• Symfony integration: Use services, environment vars, and logging.
• Version control: Chains live in Git alongside your app. Downside: Not a full workflow engine, but perfect for internal tooling."*