sonic/validator: replace sonic-yang-mgmt+libyang with generated Pydan…#2253
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sonic/validator: replace sonic-yang-mgmt+libyang with generated Pydan…#2253
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…tic schemas The previous validator imported sonic_yang (a SWIG binding to libyang1) which is not packaged for Alpine and is not available on the runtime image. Replace it with a build-time YANG→Pydantic transpiler whose committed output is the runtime schema source — runtime needs only pydantic, no native dependencies. - tools/sonic_yang_to_pydantic.py walks pyang's AST over files/sonic/yang_models/ and emits one Pydantic v2 model per ConfigDB table. - osism/tasks/conductor/sonic/_generated/_schemas.py is the committed output (205 tables); regenerated via the tool when YANG models are refreshed. - Validator API stays stable for callers; ValidatorUnavailable / load_yang_context are dropped along with the --yang-dir flag and SONIC_YANG_MODELS_DIR setting. - Tables not yet covered by upstream YANG are reported as warnings, not errors. - Containerfile drops libyang apk and the yang_models COPY; requirements.sonic.txt switches from the sonic-yang-mgmt VCS pin to pydantic; pyang moves out of runtime requirements (only needed when regenerating). Cross-table leafref enforcement is intentionally out of scope here and tracked in #2252. AI-assisted: Claude Code Signed-off-by: Christian Berendt <berendt@osism.tech>
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…tic schemas
The previous validator imported sonic_yang (a SWIG binding to libyang1) which is not packaged for Alpine and is not available on the runtime image. Replace it with a build-time YANG→Pydantic transpiler whose committed output is the runtime schema source — runtime needs only pydantic, no native dependencies.
Cross-table leafref enforcement is intentionally out of scope here and tracked in #2252.
AI-assisted: Claude Code