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ThothCTL Check Command

Overview

The thothctl check command group provides tools for validating various aspects of your infrastructure code, project structure, and environment. These commands help ensure that your projects follow best practices, adhere to defined structures, and meet security requirements.

Available Check Commands

check iac

Validates Infrastructure as Code (IaC) artifacts — plans, costs, blast radius, drift, and project structure.

thothctl check iac [OPTIONS]

Options:

Flag Description
-type, --check_type Check type: tfplan, deps, blast-radius, cost-analysis, drift, stack-optimizer
--mode [soft|hard] Validation mode (default: soft)
--recursive Validate recursively or in one directory
-deps, --dependencies View dependency graph in ASCII
--outmd Output markdown file path
--plan-file Path to tfplan.json for plan-based analysis
--filter-tags Tag filter for drift detection (e.g., env=prod,team=platform)
--tftool Use terraform or tofu (default: tofu)

Check types:

Type Description
tfplan Validate Terraform plan file
deps Dependency analysis and graph
blast-radius Change impact assessment (ITIL v4 risk classification)
cost-analysis AWS cost estimation (17 service providers)
drift Infrastructure drift detection with AI analysis
stack-optimizer DAG dependency optimization for Terragrunt

This command can validate:

  • Project structure against defined rules
  • Terraform plans for security and compliance
  • Cost impact of planned changes
  • Blast radius and change propagation
  • Configuration drift from desired state

Detailed documentation for check iac

check project

Validates project configuration and structure.

thothctl check project [OPTIONS]

This command is currently under development.

check environment

Validates the development environment and required tools.

thothctl check environment [OPTIONS]

This command is currently under development.

Project Structure Validation

The check iac command validates your project structure against rules defined in the .thothcf.toml file. The validation includes:

  1. Required Folders: Checks if all mandatory folders exist
  2. Required Files: Checks if all required files exist in the project root
  3. Folder Content: Checks if folders contain required files
  4. Folder Hierarchy: Validates the parent-child relationship between folders

Example Project Structure Rules

[project_structure]
root_files = [
    ".gitignore",
    ".pre-commit-config.yaml",
    "README.md"
]
ignore_folders = [
    ".git",
    ".terraform",
    "Reports"
]

[[project_structure.folders]]
name = "modules"
mandatory = true
content = [
    "variables.tf",
    "main.tf",
    "outputs.tf",
    "README.md"
]
type = "root"

[[project_structure.folders]]
name = "environments"
mandatory = true
type = "root"

Validation Modes

The check commands support two validation modes:

  • soft: Reports issues but doesn't fail the command (exit code 0)
  • hard: Reports issues and fails the command with a non-zero exit code if any issues are found
thothctl check iac --mode hard

Use Cases

Continuous Integration

Add check commands to your CI/CD pipeline to validate infrastructure code before deployment:

# Example GitHub Actions workflow
jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Install ThothCTL
        run: pip install thothctl
      - name: Validate IaC
        run: thothctl check iac --mode hard

Pre-commit Hooks

Use check commands in pre-commit hooks to validate changes before committing:

# .pre-commit-config.yaml
repos:
  - repo: local
    hooks:
      - id: thothctl-check-iac
        name: ThothCTL Check IaC
        entry: thothctl check iac
        language: system
        pass_filenames: false

Development Workflow

Run check commands during development to ensure your code meets requirements:

# Before submitting a pull request
thothctl check iac --check_type project

Examples

Basic Project Structure Check

thothctl check iac

Strict Module Validation

thothctl check iac --check_type module --mode hard

Recursive Terraform Plan Check with Markdown Output

thothctl check iac --check_type tfplan --recursive recursive --outmd

Check Project Structure with Dependencies

thothctl check iac --dependencies

Best Practices

  1. Define Clear Rules: Create detailed structure rules in your .thothcf.toml file
  2. Version Control Rules: Include your validation rules in version control
  3. Consistent Validation: Use the same validation rules across all environments
  4. Automated Checks: Integrate validation into your CI/CD pipeline
  5. Documentation: Document your project structure requirements

Troubleshooting

Common Issues

Missing Configuration

Using default options

Solution: Create a .thothcf.toml file with your project structure rules.

Validation Failures

❌ - Required file main.tf missing in modules/network
Project structure is invalid

Solution: Add the missing file or update your structure rules if the file is not actually required.

Permission Issues

Error: [Errno 13] Permission denied: '/path/to/directory'

Solution: Ensure you have read permissions for all directories being validated.

Debugging

For more detailed logs, run ThothCTL with the --debug flag:

thothctl --debug check iac

Related Commands