20 Commits (fa74de3cf257dfd7c14c17403928d8b785c43df6)

Author	SHA1	Message	Date
Rahim Kanji	4d91452fc5	Implement backend query cancellation for PostgreSQL #5136 ... Add support for PostgreSQL query cancellation and backend termination features to allow clients to cancel long-running queries and terminate connections through the standard PostgreSQL protocol. Features implemented: - Intercept pg_backend_pid() queries and return ProxySQL session thread ID - Intercept pg_terminate_backend() to terminate client connections asynchronously - Intercept pg_cancel_backend() to cancel queries on backend connections - Support Cancel Request protocol via separate connection with PID and secret key validation - Return BackendKeyData message on successful authentication with session thread ID and unique cancel secret key This enables clients to use standard PostgreSQL cancellation mechanisms (pg_cancel_backend, pg_terminate_backend, and Cancel Request protocol) while ProxySQL maintains proper session isolation and maps client requests to appropriate backend connections.	5 months ago
Rahim Kanji	205f970ffa	Append NoData for DESCRIBE(Portal) on SET/RESET/DISCARD/DEALLOCATE	6 months ago
Rahim Kanji	7d5fe54230	Refactor: unify result handling for Parse and Describe ... Previously, Parse and Describe each had their own query result handling paths. This duplicated a lot of logic and also failed to handle some cases correctly—for example, Notice messages returned by the server during extended-protocol queries. Keeping these separate paths would be hard to maintain and prone to bugs. The simple-query result handling is already mature, optimized, and covers all the necessary cases. Reusing it for Parse and Describe makes behavior consistent across simple and extended query flows, while also reducing duplicate code.	6 months ago
Rahim Kanji	8a3bab5002	Ensure consistent handling of NoData packets in PQsendQueryPrepared ... The PQsendQueryPrepared function transmits the sequence BIND -> DESCRIBE(PORTAL) -> EXECUTE -> SYNC. However, libpq does not indicate whether the DESCRIBE PORTAL step produces a NoData packet for commands such as INSERT, DELETE, or UPDATE. In these cases, libpq returns PGRES_COMMAND_OK, whereas SELECT statements yield PGRES_SINGLE_TUPLE or PGRES_TUPLES_OK. This update explicitly appends a NoData packet to the result in order to provide consistent behavior across query types.	6 months ago
Rahim Kanji	48ba491cb7	Add support for unnamed Describe Portal and improve extended query handling ... - Always send Describe Portal to the backend - Enforce check for unnamed portals in Bind, Describe, Close, and Execute; raise errors for named portals - Improve error handling for extended query flow - Introduce Extended_Query_Info struct to unify extended query-related members and reduce redundancy	8 months ago
Rahim Kanji	d3592020ac	* Created a separate file for Extended Query messages to reduce clutter in PgSQL_Protocol. ... * Moved get_uint32be() and get_uint16be() to gen_utils.h * Split PgSQL_*_Message into distinct Message and Data components.	8 months ago
Rahim Kanji	8bb248cef5	Added Bind and Execute support	8 months ago
Rahim Kanji	4d0618c296	Added Close statement handling	8 months ago
Rahim Kanji	a741598a8d	Added Describe message handling	8 months ago
Rahim Kanji	24fecc1f6e	Add PostgreSQL extended query (prepared statement) support in ProxySQL ... This commit lays the groundwork for handling PostgreSQL’s extended query protocol (prepared statements) by introducing parsing, it's caching and execution framework stubs. - Implement Parse handling - Implement caching of parse (reuse) - Introduce Execute framework stub for future binding and execution logic.	8 months ago
Rahim Kanji	190e369658	Added Transaction State flag in SQLite3_to_Postgres	10 months ago
Rahim Kanji	fbb9500cb9	Refactored connection parameters ... * Accept all parameters sent by the client, mirroring PostgreSQL's permissive handling. * Validate and apply parameters only after successful authentication. This avoids wasting resources on invalid connections.	11 months ago
Rahim Kanji	c7960f836b	Added Parameter Status	1 year ago
Rahim Kanji	06e496b7c3	Added tracking of parameters: ... * client_encoding/names * datestyle * timezone/time zone * standard_conforming_strings	1 year ago
Rahim Kanji	f16f553995	Added PostgreSQL notice handler	1 year ago
Rahim Kanji	5a37a1474a	Added PGSQL_QUERY_RESULT_COPY_IN	1 year ago
Rahim Kanji	616a8e0e23	Implemented handling of COPY OUT ... Added threshold checks to manage result size	1 year ago
Rahim Kanji	1fde42de97	Override generate_pkt_OK, generate_pkt_EOF, and generate_pkt_ERR to convert the corresponding messages to PostgreSQL protocol format and prevent crashes	1 year ago
René Cannaò	dd67530af4	Adding some documentation	1 year ago
René Cannaò	04abd43a57	Initial commit with PostgreSQL support	1 year ago