SELECT citus.mitmproxy('conn.allow()');
 mitmproxy
---------------------------------------------------------------------

(1 row)

SELECT citus.clear_network_traffic();
 clear_network_traffic
---------------------------------------------------------------------

(1 row)

SET citus.shard_count = 2;
SET citus.shard_replication_factor = 2;
CREATE TABLE mod_test (key int, value text);
SELECT create_distributed_table('mod_test', 'key');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

-- verify behavior of single INSERT; should mark shard as failed
SELECT citus.mitmproxy('conn.onQuery(query="INSERT").kill()');
 mitmproxy
---------------------------------------------------------------------

(1 row)

INSERT INTO mod_test VALUES (2, 6);
ERROR:  connection to the remote node localhost:xxxxx failed with the following error: connection not open
SELECT COUNT(*) FROM mod_test WHERE key=2;
 count
---------------------------------------------------------------------
     0
(1 row)

-- none of the placements are marked as INACTIVE
UPDATE pg_dist_shard_placement SET shardstate = 1
WHERE shardid IN (
  SELECT shardid FROM pg_dist_shard WHERE logicalrelid = 'mod_test'::regclass
) AND shardstate = 3 RETURNING placementid;
 placementid
---------------------------------------------------------------------
(0 rows)

TRUNCATE mod_test;
-- verify behavior of UPDATE ... RETURNING; should fail the transaction
SELECT citus.mitmproxy('conn.allow()');
 mitmproxy
---------------------------------------------------------------------

(1 row)

INSERT INTO mod_test VALUES (2, 6);
SELECT citus.mitmproxy('conn.onQuery(query="UPDATE").kill()');
 mitmproxy
---------------------------------------------------------------------

(1 row)

UPDATE mod_test SET value='ok' WHERE key=2 RETURNING key;
ERROR:  connection to the remote node localhost:xxxxx failed with the following error: connection not open
SELECT COUNT(*) FROM mod_test WHERE value='ok';
 count
---------------------------------------------------------------------
     0
(1 row)

-- none of the placements are marked as INACTIVE
UPDATE pg_dist_shard_placement SET shardstate = 1
WHERE shardid IN (
  SELECT shardid FROM pg_dist_shard WHERE logicalrelid = 'mod_test'::regclass
) AND shardstate = 3 RETURNING placementid;
 placementid
---------------------------------------------------------------------
(0 rows)

TRUNCATE mod_test;
-- verify behavior of multi-statement modifications to a single shard
-- should fail the transaction and never mark placements inactive
SELECT citus.mitmproxy('conn.onQuery(query="UPDATE").kill()');
 mitmproxy
---------------------------------------------------------------------

(1 row)

BEGIN;
INSERT INTO mod_test VALUES (2, 6);
INSERT INTO mod_test VALUES (2, 7);
DELETE FROM mod_test WHERE key=2 AND value = '7';
UPDATE mod_test SET value='ok' WHERE key=2;
ERROR:  connection to the remote node localhost:xxxxx failed with the following error: connection not open
COMMIT;
SELECT COUNT(*) FROM mod_test WHERE key=2;
 count
---------------------------------------------------------------------
     0
(1 row)

-- none of the placements are marked as INACTIVE
UPDATE pg_dist_shard_placement SET shardstate = 1
WHERE shardid IN (
  SELECT shardid FROM pg_dist_shard WHERE logicalrelid = 'mod_test'::regclass
) AND shardstate = 3 RETURNING placementid;
 placementid
---------------------------------------------------------------------
(0 rows)

TRUNCATE mod_test;
-- ==== Clean up, we're done here ====
DROP TABLE mod_test;