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Conventions covering naming, git workflow, commit messages, pull requests, code review, GitHub standards, AWS infrastructure, SAM project layout, and secrets management. Commit messages section adapted from RomuloOliveira/commit-messages-guide (CC-BY-4.0).
48 lines
1.5 KiB
Markdown
48 lines
1.5 KiB
Markdown
# SAM Project Layout
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## Standard Directory Structure
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```
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project-name/
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├── template.yaml # SAM template at root
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├── samconfig.toml # Deploy config (gitignored)
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├── samconfig.toml.example # Template for onboarding (committed)
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├── src/
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│ ├── function_name/
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│ │ ├── app.py # Lambda handler
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│ │ └── requirements.txt # Per-function dependencies
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│ └── shared/ # Shared layer code (if needed)
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└── .gitignore
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```
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## File Purposes
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### `template.yaml`
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The SAM/CloudFormation template. Lives at the project root. Defines all Lambda functions, IAM roles, API Gateway endpoints, DynamoDB tables, and other resources.
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### `samconfig.toml`
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Contains real ARNs, S3 bucket names, and deploy parameters. **Gitignored** because it varies per environment and may contain account-specific values.
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### `samconfig.toml.example`
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A committed template showing the expected structure and parameter names. New contributors copy this to `samconfig.toml` and fill in their values.
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### `src/function_name/`
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One directory per Lambda function. Each contains its own handler (`app.py`) and dependencies (`requirements.txt`). This keeps functions independently deployable and avoids bloating one function with another's dependencies.
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### `src/shared/`
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Optional. Used for code shared across multiple functions, typically deployed as a Lambda layer.
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## Standard .gitignore
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```
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.aws-sam/
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__pycache__/
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*.pyc
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.env
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samconfig.toml
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```
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