aiopg: capture db.query.parameter.<key> under new semconv#4806
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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.
Add a capture_parameters option to AiopgInstrumentor and thread it through the aiopg wrappers into AiopgIntegration. When enabled, the async execution path emits db.statement.parameters under the old semconv and db.query.parameter.<key> under the new semconv, reusing the shared dbapi _populate_span logic. Query parameters are not captured for batch operations (executemany).
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Description
Adds a
capture_parametersoption to the aiopg instrumentor and records parameters asdb.query.parameter.<key>under the new database semconv (legacy blob under old semconv), not on batch operations. Reuses the shared DB-API_populate_span.Part of #4787. Fixes #4796.
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