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From: Greenmask.io via PostgreSQL Announce <[email protected]>
To: PostgreSQL Announce <[email protected]>
Subject: Greenmask v0.1.0 Release
Date: Thu, 11 Jan 2024 14:21:19 +0000
Message-ID: <[email protected]> (raw)

## PostgreSQL Dump and Obfuscation Tool

We are excited to announce the release of Greenmask v0.1.0, marking the first production-ready version. This release addresses various bug fixes, introduces improvements, and includes documentation refactoring for enhanced clarity.

### Greenmask overview

#### Key Features
- Cross-Platform Support: Developed in Go, Greenmask is free of platform dependencies.
- Type-Safe Database Operations: Ensures data validation and encoding, maintaining integrity.
- Transformation Validation: Guarantees correct and maintainable data transformations.
- Partitioned Table Support: Eases configuration for partitioned tables.
- Stateless and Backward Compatible: Compatible with standard PostgreSQL utilities.
- Parallel Execution: Boosts efficiency in dumping and restoration processes.
- Multiple Storage Options: Offers support for both local and remote storage solutions.

#### Use Cases
- Perfect for routine backup and restoration tasks.
- Aids in anonymization and data masking for staging environments and analytics.

### Release notes

#### Improvements

- Improved verbosity in custom transformer interaction, accumulating stderr data and forwarding it in batches instead of writing it one by one.
- Added positional arguments for the list-transformers command, allowing specific transformer information retrieval (e.g., `greenmask list-transformers RandomDate`).
- Added version parameter --version that prints greenmask utility version
- Added Numeric parameters support for Int and Float transformers, with the caveat that in a few cases, it may lead to out-of-range errors.

#### Changes

- Updated dependencies to newer versions.
- Enhanced the stability of the JSON line interaction protocol by utilizing the stdlib JSON encoder/decoder.
- Modified the method for sending table metadata to custom transformers; now, it is sent via stdin in the first line in JSON format instead of providing it via command arguments.
- Refactored template functions naming.
- Rewritten NoiseDate transformer implementation for improved stability and predictability.
- Changed the default value for the Dict transformer fail_not_matched parameter to true.
- Rewritten Hash transformer, now providing a salt parameter and receiving a base64 encoded salt. If a salt is not provided, it generates one randomly.
- Added validator for NoiseDate and RandomDate transformers for the truncate parameter, issuing a warning if the provided value is invalid.
- Increased verbosity of parameter validation warnings, now properly forwarding warnings to stdout.


#### Fixes

- Resolved pgx driver connection leakage issue.
- Fixed deletion failure of dumps for S3 storage.
- Corrected cobra autocompletion for the Greenmask utility.
- Fixed NOT NULL constraint validation.
- Addressed JSON API interaction issues that previously caused deadlocks and timeouts.
- Fixed encode-decoding for binary parameters, ensuring accurate forwarding of values to custom transformers.
- Fixed the RandomChoice transformer to correctly marshal and unmarshal values during validation.
- Introduced the Nullable property for the SetNull transformer to enhance NOT NULL constraint validation.
- Resolved text wrapping issues for the validate command.
- Fixed build failures on Windows due to Linux platform dependencies.
- Corrected stdout readline buffer reading during interaction with custom transformers.
- Fixed integration tests.


#### Ecosystem Changes

- Implemented CI/CD for the entire project.
- Established a user-friendly playground in Docker-compose, including:
  - Deployed Minio storage container.
  - PostgreSQL container containing both the original database (Adventure Works) and the transformed (empty DB).
  - Greenmask container itself.
- Refactored current readme files.

### Community Participation
We highly value feedback and suggestions from the PostgreSQL community. Your insights and testing are crucial for enhancing Greenmask's robustness and utility.

### Useful Links
- [Documentation](https://greenmask.io/)
- [Release on GitHub](https://github.com/GreenmaskIO/greenmask/releases/tag/v0.1.0)
- [Email Support](mailto:[email protected])

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