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);
WARNING:  server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
CONTEXT:  while executing command on localhost:9060
SELECT COUNT(*) FROM mod_test WHERE key=2;
 count 
-------
     1
(1 row)

-- some clean up
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 
-------------
         137
(1 row)

TRUNCATE mod_test;
-- verify behavior of UPDATE ... RETURNING; should mark as failed
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;
WARNING:  server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
CONTEXT:  while executing command on localhost:9060
 key 
-----
   2
(1 row)

SELECT COUNT(*) FROM mod_test WHERE value='ok';
 count 
-------
     1
(1 row)

-- some clean up
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 
-------------
         137
(1 row)

TRUNCATE mod_test;
-- verify behavior of multi-statement modifications to a single shard
-- should succeed but mark a placement as failed
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;
WARNING:  server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.
CONTEXT:  while executing command on localhost:9060
COMMIT;
WARNING:  connection not open
CONTEXT:  while executing command on localhost:9060
WARNING:  connection not open
CONTEXT:  while executing command on localhost:9060
WARNING:  connection not open
CONTEXT:  while executing command on localhost:9060
SELECT COUNT(*) FROM mod_test WHERE key=2;
 count 
-------
     1
(1 row)

-- some clean up
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 
-------------
         137
(1 row)

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