[FEATURE] Environment Variable Configuration Module (- WIP #31 -) #256
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Additions with file multicast/env.py: * Added multicast.env module for environment-based configuration. * Updates global defaults when valid overrides are provided Changes in file multicast/__init__.py: * Early related import changes Changes in file setup.cfg: - related changes Changes in file tests/__init__.py: - related changes to test new docstrings
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WalkthroughThe changes in this pull request involve the addition of environment configuration handling for multicast settings in the Changes
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The code properly handles the import of the environment module and provides appropriate error handling.
The global declarations for imported modules are properly implemented to handle potential circular dependencies using sys.modules. Also applies to: 661-661, 676-676, 683-683, 690-690, 696-696
Remove unnecessary The _MCAST_DEFAULT_PORT = _config["port"]
_MCAST_DEFAULT_GROUP = _config["group"]
_MCAST_DEFAULT_TTL = _config["ttl"]
- global _MCAST_DEFAULT_BIND_IP
_MCAST_DEFAULT_BIND_IP = _config["bind_addr"]
- global _MCAST_DEFAULT_GROUPS
_MCAST_DEFAULT_GROUPS = _config["groups"]
- global _MCAST_DEFAULT_BUFFER
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Changes in file multicast/__init__.py: - just mark a few globals with pragma "skipcq: PYL-W0604"
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Changes in file multicast/__init__.py: - Minor improvements to documentation. Changes in file multicast/env.py: - Several minor improvements to documentation.
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🧹 Outside diff range and nitpick comments (1)
multicast/__init__.py (1)
385-389: Enhance the import docstringConsider expanding the docstring to include:
- Available environment variables
- Default values
- Configuration constraints
- """Import the environment configuration module. - - This module provides functionality for loading and validating - multicast configuration from environment variables. - """ + """Import the environment configuration module. + + This module provides functionality for loading and validating + multicast configuration from environment variables. + + Environment Variables: + MULTICAST_PORT: Port number (default: 59259) + MULTICAST_GROUP: Multicast group address (default: '224.0.0.1') + MULTICAST_GROUPS: Comma-separated list of group addresses + MULTICAST_TTL: Time-to-live value (default: 1) + MULTICAST_BIND_ADDR: Binding address + MULTICAST_BUFFER_SIZE: Socket buffer size + + All variables are validated according to RFC standards and + multicast constraints. + """
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PR: reactive-firewall/multicast#0
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PR: reactive-firewall/multicast#0
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PR: reactive-firewall/multicast#184
File: LICENSE.md:36-43
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PR: reactive-firewall/multicast#0
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Learning: For future reviews, remember that when drafting or updating CEP (Convention Enhancement Proposal) documents, it's important to adhere to the project's standard format and include all relevant sections such as Motivation, Detailed Explanation, Implementation Guidelines, Impact, and References.
🔇 Additional comments (2)
multicast/__init__.py (2)
32-32: LGTM: Appropriate addition to all
The addition of "env" to all is consistent with the module's public API exposure.
403-408: Remove unnecessary global statements
The global statements at module level are unnecessary as variables are already in the global scope.
- global _MCAST_DEFAULT_BIND_IP # skipcq: PYL-W0604
_MCAST_DEFAULT_BIND_IP = _config["bind_addr"]
- global _MCAST_DEFAULT_GROUPS # skipcq: PYL-W0604
_MCAST_DEFAULT_GROUPS = _config["groups"]
- global _MCAST_DEFAULT_BUFFER # skipcq: PYL-W0604
_MCAST_DEFAULT_BUFFER = _config["buffer_size"]Changes in file multicast/__init__.py: - fixed minor regression. Changes in file multicast/env.py: - removed eronious whitespace.
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* This change introduces use of the new GitHub repository variables:
- PYTHON_DEFAULT
- PYTHON_OLD_MIN
- PYTHON_OLD_EXTRA
- PYTHON_PYTHON_EXPERIMENTAL
* related work (- WIP #256 -)
Changes in file .github/workflows/CI-MATs.yml:
- use of the new GHA variables for the python version settings
- related work
Changes in file .github/workflows/CI-DOCS.yml:
- use of the new GHA variables for the python version settings
- related work
Changes in file .github/workflows/Tests.yml:
- use of the new GHA variables for the python version settings
reactive-firewall
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Apr 30, 2025
* this work is part of #256 Changes in file tests/check_cc_lines: * minor fix
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Patch Notes: Environment Variable Configuration Module
Impacted Issues
New Features
multicast.envmodule for environment-based configurationMULTICAST_PORT(49152-65535, default: 59259)MULTICAST_GROUP(224.0.0.0/4, default: "224.0.0.1")MULTICAST_GROUPS(space-separated list of multicast addresses)MULTICAST_TTL(1-126, default: 1)MULTICAST_BIND_ADDR(default: "0.0.0.0")MULTICAST_BUFFER_SIZE(default: a little more than about ~2¹⁰)Important
While
MULTICAST_BIND_ADDRis given a default of0.0.0.0& similarlyMULTICAST_BUFFER_SIZEis given a default of about ~2¹⁰, for now, developers are discouraged from relying on these values as they are likely to change in future releases to better adhere to BCP values after additional review.Implementation Details
New Module:
./multicast/env.pyvalidate_port(): Ensures port is in dynamic/private rangevalidate_multicast_address(): Validates multicast IP addressesvalidate_ttl(): Validates TTL per RFC-1112load_config(): Loads and validates environment variablesIntegration:
__init__.pybeforesktmoduleKey Features
Graceful Error Handling:
Global Updates:
socket.setdefaulttimeoutMulticast Groups Management:
MULTICAST_GROUPSDocumentation
Usage Example
Caveat
References
Summary by CodeRabbit
New Features
Bug Fixes
Documentation
Chores
Tests