fix: disable UNLISTEN for GaussDB and unskip related tests#17
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This commit addresses an issue where releasing a connection back to the pool would trigger an `UNLISTEN *` command. This caused failures in GaussDB environments (specifically in Oracle compatibility mode) where the PostgreSQL `LISTEN/NOTIFY` mechanism is not supported. Changes: 1. Modified `_detect_server_capabilities` to identify GaussDB environments by checking for `sql_mode` in connection settings. 2. Explicitly set `notifications = False` for these environments. This prevents the connection pool from attempting to execute `UNLISTEN *` during the cleanup/release phase. 3. Ensured that standard PostgreSQL connections retain full `LISTEN/UNLISTEN` functionality. 4. Re-enabled (unskipped) unit tests that were previously failing or skipped due to this incompatibility.
The previous detection logic was insufficient for standard OpenGauss environments (e.g., A-compatibility or default modes) as it relied on keys like 'sql_mode' which may not exist. Changes: 1. Updated `_detect_server_capabilities` to identify GaussDB/OpenGauss using the core parameter `session_respool`.
The previous detection logic was insufficient for standard OpenGauss environments (e.g., A-compatibility or default modes) as it relied on keys like 'sql_mode' which may not exist. Changes: 1. Updated `_detect_server_capabilities` to identify GaussDB/OpenGauss using the core parameter `session_respool`.
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This commit addresses an issue where releasing a connection back to the pool would trigger an
UNLISTEN *command. This caused failures in GaussDB environments (specifically in Oracle compatibility mode) where the PostgreSQLLISTEN/NOTIFYmechanism is not supported.Changes:
_detect_server_capabilitiesto identify GaussDB environments by checking forsql_modein connection settings.notifications = Falsefor these environments. This prevents the connection pool from attempting to executeUNLISTEN *during the cleanup/release phase.LISTEN/UNLISTENfunctionality.