pymysql: add capture_parameters option#4801
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Add a shared _set_db_query_parameters helper that emits one db.query.parameter.<key> attribute per prepared-statement parameter, keyed by name for named parameters and by 0-based index for positional parameters, with values stringified. Wire it into the dbapi CursorTracer so that, when capture_parameters is enabled, the legacy db.statement.parameters attribute is reported only in the old semconv while db.query.parameter.<key> is reported in the new (stable) database semconv. Parameters are not captured on batch operations (executemany), per the semantic conventions.
Thread a capture_parameters flag through PyMySQLInstrumentor._instrument and instrument_connection to the dbapi layer so query parameters can be captured as span attributes.
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Description
Threads a
capture_parametersoption through the pymysql instrumentor to the shared DB-API layer, so parameters are recorded asdb.query.parameter.<key>.Part of #4787. Fixes #4791.
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Does This PR Require a Core Repo Change?
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