--
-- MULTI_REPLICATE_REFERENCE_TABLE
--
-- Tests that check that reference tables are replicated when adding new nodes.

SET citus.next_shard_id TO 1370000;
ALTER SEQUENCE pg_catalog.pg_dist_colocationid_seq RESTART 1370000;
ALTER SEQUENCE pg_catalog.pg_dist_groupid_seq RESTART 1370000;
ALTER SEQUENCE pg_catalog.pg_dist_node_nodeid_seq RESTART 1370000;


-- remove a node for testing purposes
CREATE TABLE tmp_shard_placement AS SELECT * FROM pg_dist_shard_placement WHERE nodeport = :worker_2_port;
DELETE FROM pg_dist_shard_placement WHERE nodeport = :worker_2_port;
SELECT master_remove_node('localhost', :worker_2_port);


-- test adding new node with no reference tables

-- verify there is no node with nodeport = :worker_2_port before adding the node
SELECT COUNT(*) FROM pg_dist_node WHERE nodeport = :worker_2_port;

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- verify node is added
SELECT COUNT(*) FROM pg_dist_node WHERE nodeport = :worker_2_port;

-- verify nothing is replicated to the new node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port;


-- test adding new node with a reference table which does not have any healthy placement
SELECT master_remove_node('localhost', :worker_2_port);

-- verify there is no node with nodeport = :worker_2_port before adding the node
SELECT COUNT(*) FROM pg_dist_node WHERE nodeport = :worker_2_port;

CREATE TABLE replicate_reference_table_unhealthy(column1 int);
SELECT create_reference_table('replicate_reference_table_unhealthy');
UPDATE pg_dist_shard_placement SET shardstate = 3 WHERE shardid = 1370000;

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- verify node is not added
SELECT COUNT(*) FROM pg_dist_node WHERE nodeport = :worker_2_port;

-- verify nothing is replicated to the new node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port;

DROP TABLE replicate_reference_table_unhealthy;


-- test replicating a reference table when a new node added
CREATE TABLE replicate_reference_table_valid(column1 int);
SELECT create_reference_table('replicate_reference_table_valid');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_valid'::regclass);

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_valid'::regclass);


-- test add same node twice

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_valid'::regclass);

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_valid'::regclass);

DROP TABLE replicate_reference_table_valid;


-- test replicating a reference table when a new node added in TRANSACTION + ROLLBACK
SELECT master_remove_node('localhost', :worker_2_port);

CREATE TABLE replicate_reference_table_rollback(column1 int);
SELECT create_reference_table('replicate_reference_table_rollback');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_rollback'::regclass);

BEGIN;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
ROLLBACK;

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_rollback'::regclass);

DROP TABLE replicate_reference_table_rollback;


-- test replicating a reference table when a new node added in TRANSACTION + COMMIT
CREATE TABLE replicate_reference_table_commit(column1 int);
SELECT create_reference_table('replicate_reference_table_commit');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_commit'::regclass);

BEGIN;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
COMMIT;

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_commit'::regclass);

DROP TABLE replicate_reference_table_commit;


-- test adding new node + upgrading another hash distributed table to reference table + creating new reference table in TRANSACTION
SELECT master_remove_node('localhost', :worker_2_port);

CREATE TABLE replicate_reference_table_reference_one(column1 int);
SELECT create_reference_table('replicate_reference_table_reference_one');

SET citus.shard_count TO 1;
SET citus.shard_replication_factor TO 1;
SET citus.replication_model TO 'streaming';
CREATE TABLE replicate_reference_table_hash(column1 int);
SELECT create_distributed_table('replicate_reference_table_hash', 'column1');

-- update replication model to statement-based replication since streaming replicated tables cannot be upgraded to reference tables
UPDATE pg_dist_partition SET repmodel='c' WHERE logicalrelid='replicate_reference_table_hash'::regclass;

CREATE TABLE replicate_reference_table_reference_two(column1 int);

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_reference_one'::regclass);

SELECT colocationid AS reference_table_colocationid FROM pg_dist_colocation WHERE distributioncolumntype = 0 \gset

SELECT
    logicalrelid, partmethod, colocationid = :reference_table_colocationid, repmodel
FROM
    pg_dist_partition
WHERE
    logicalrelid IN ('replicate_reference_table_reference_one', 'replicate_reference_table_hash', 'replicate_reference_table_reference_two')
ORDER BY logicalrelid;

BEGIN;
SET LOCAL client_min_messages TO ERROR;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
SELECT upgrade_to_reference_table('replicate_reference_table_hash');
SELECT create_reference_table('replicate_reference_table_reference_two');
COMMIT;

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_reference_one'::regclass);

SELECT
    logicalrelid, partmethod, colocationid = :reference_table_colocationid, repmodel
FROM
    pg_dist_partition
WHERE
    logicalrelid IN ('replicate_reference_table_reference_one', 'replicate_reference_table_hash', 'replicate_reference_table_reference_two')
ORDER BY
	logicalrelid;

DROP TABLE replicate_reference_table_reference_one;
DROP TABLE replicate_reference_table_hash;
DROP TABLE replicate_reference_table_reference_two;


-- test inserting a value then adding a new node in a transaction
SELECT master_remove_node('localhost', :worker_2_port);

CREATE TABLE replicate_reference_table_insert(column1 int);
SELECT create_reference_table('replicate_reference_table_insert');

BEGIN;
INSERT INTO replicate_reference_table_insert VALUES(1);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
ROLLBACK;

DROP TABLE replicate_reference_table_insert;


-- test COPY then adding a new node in a transaction
CREATE TABLE replicate_reference_table_copy(column1 int);
SELECT create_reference_table('replicate_reference_table_copy');

BEGIN;
COPY replicate_reference_table_copy FROM STDIN;
1
2
3
4
5
\.
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
ROLLBACK;

DROP TABLE replicate_reference_table_copy;


-- test executing DDL command then adding a new node in a transaction
CREATE TABLE replicate_reference_table_ddl(column1 int);
SELECT create_reference_table('replicate_reference_table_ddl');

BEGIN;
ALTER TABLE replicate_reference_table_ddl ADD column2 int;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
ROLLBACK;

DROP TABLE replicate_reference_table_ddl;


-- test DROP table after adding new node in a transaction
CREATE TABLE replicate_reference_table_drop(column1 int);
SELECT create_reference_table('replicate_reference_table_drop');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_drop'::regclass);

BEGIN;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
DROP TABLE replicate_reference_table_drop;
COMMIT;

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT * FROM pg_dist_colocation WHERE colocationid = 1370009;

-- test adding a node while there is a reference table at another schema
SELECT master_remove_node('localhost', :worker_2_port);

CREATE SCHEMA replicate_reference_table_schema;
CREATE TABLE replicate_reference_table_schema.table1(column1 int);
SELECT create_reference_table('replicate_reference_table_schema.table1');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_schema.table1'::regclass);

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT *
FROM pg_dist_colocation
WHERE colocationid IN
    (SELECT colocationid
     FROM pg_dist_partition
     WHERE logicalrelid = 'replicate_reference_table_schema.table1'::regclass);

DROP TABLE replicate_reference_table_schema.table1;
DROP SCHEMA replicate_reference_table_schema CASCADE;


-- test adding a node when there are foreign keys between reference tables
SELECT master_remove_node('localhost', :worker_2_port);

CREATE TABLE ref_table_1(id int primary key, v int);
CREATE TABLE ref_table_2(id int primary key, v int references ref_table_1(id));
CREATE TABLE ref_table_3(id int primary key, v int references ref_table_2(id));

SELECT create_reference_table('ref_table_1'),
       create_reference_table('ref_table_2'),
       create_reference_table('ref_table_3');

-- status before master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- status after master_add_node
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    nodeport = :worker_2_port
ORDER BY shardid, nodeport;

-- verify constraints have been created on the new node
SELECT run_command_on_workers('select count(*) from pg_constraint where contype=''f'' AND conname like ''ref_table%'';');

DROP TABLE ref_table_1, ref_table_2, ref_table_3;

-- do some tests with inactive node
SELECT master_remove_node('localhost', :worker_2_port);

CREATE TABLE initially_not_replicated_reference_table (key int);
SELECT create_reference_table('initially_not_replicated_reference_table');

SELECT 1 FROM master_add_inactive_node('localhost', :worker_2_port);

-- we should see only one shard placements (other than coordinator)
SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    shardid IN (SELECT
                    shardid
                FROM
                    pg_dist_shard
                WHERE
                    logicalrelid = 'initially_not_replicated_reference_table'::regclass)
    AND nodeport != :master_port
ORDER BY 1,4,5;

-- we should see the two shard placements after activation
SELECT 1 FROM master_activate_node('localhost', :worker_2_port);

SELECT
    shardid, shardstate, shardlength, nodename, nodeport
FROM
    pg_dist_shard_placement
WHERE
    shardid IN (SELECT
                    shardid
                FROM
                    pg_dist_shard
                WHERE
                    logicalrelid = 'initially_not_replicated_reference_table'::regclass)
    AND nodeport != :master_port
ORDER BY 1,4,5;

-- this should have no effect
SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- test adding an invalid node while we have reference tables to replicate
-- set client message level to ERROR and verbosity to terse to supporess
-- OS-dependent host name resolution warnings
SET client_min_messages to ERROR;
\set VERBOSITY terse

SELECT master_add_node('invalid-node-name', 9999);

SET client_min_messages to DEFAULT;
\set VERBOSITY default

-- drop unnecassary tables
DROP TABLE initially_not_replicated_reference_table;

-- reload pg_dist_shard_placement table
INSERT INTO pg_dist_shard_placement (SELECT * FROM tmp_shard_placement);
DROP TABLE tmp_shard_placement;

RESET citus.shard_replication_factor;
RESET citus.replication_model;
