Fix #70: Implement HTTP caching for offline mode#71
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Previously, offline mode only skipped VCS operations but still fetched HTTP-referenced requirements/constraints files. This created an inconsistent "offline" experience where network requests were still made. Changes: - Add HTTP content caching to .mxdev_cache/ directory - Online mode: fetch from HTTP and cache for future use - Offline mode: read from cache, error if not cached - Cache key: SHA256 hash (first 16 chars) of URL - Add comprehensive tests for cache hit/miss/revalidation Implementation: - Add _get_cache_key(), _cache_http_content(), _read_from_cache() - Modify resolve_dependencies() to accept offline/cache_dir params - Thread offline state through process_io() and process_line() - Update read() to pass offline state from configuration Documentation: - Improve help text for -n/--no-fetch, -f/--fetch-only, -o/--offline - Add "Offline Mode and HTTP Caching" section to README.md - Document cache location and workflow examples - Update CHANGES.md with bug fix entry All 190 tests pass, including 5 new HTTP caching tests.
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Summary
Fixes #70 - Offline mode now properly handles HTTP-referenced requirements/constraints files through caching.
Problem
Previously, offline mode (
-o/--offline) only skipped VCS operations but still fetched HTTP-referenced requirements/constraints files. This created an inconsistent "offline" experience where network requests were still made despite the flag.Solution
Implemented HTTP content caching:
.mxdev_cache/Changes
Implementation
_get_cache_key(),_cache_http_content(),_read_from_cache()resolve_dependencies()to acceptofflineandcache_dirparametersprocess_io()andprocess_line()read()to pass offline state from configurationDocumentation
-n/--no-fetch,-f/--fetch-only,-o/--offlineTesting
test_http_cache_online_mode: Verify caching during online fetchtest_http_cache_offline_mode_hit: Verify cache read in offline modetest_http_cache_offline_mode_miss: Verify error on cache misstest_cache_key_generation: Verify deterministic cache keystest_http_cache_revalidates_in_online_mode: Verify cache updatesTest Results
All 190 tests pass (including 5 new HTTP caching tests).
Checklist
.mxdev_cache/added to.gitignore