SET citus.next_shard_id TO 1220000;
ALTER SEQUENCE pg_catalog.pg_dist_colocationid_seq RESTART 1390000;
ALTER SEQUENCE pg_catalog.pg_dist_groupid_seq RESTART 1;

-- Tests functions related to cluster membership

-- add the nodes to the cluster
SELECT 1 FROM master_add_node('localhost', :worker_1_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- I am coordinator
SELECT citus_is_coordinator();
-- workers are not coordinator
SELECT result FROM run_command_on_workers('SELECT citus_is_coordinator()');

-- get the active nodes
SELECT master_get_active_worker_nodes();

-- try to add a node that is already in the cluster
SELECT * FROM master_add_node('localhost', :worker_1_port);

-- get the active nodes
SELECT master_get_active_worker_nodes();

-- try to remove a node (with no placements)
SELECT master_remove_node('localhost', :worker_2_port);

-- verify that the node has been deleted
SELECT master_get_active_worker_nodes();

-- try to disable a node with no placements see that node is s=removed
SELECT 1 FROM master_add_node('localhost', :worker_2_port);

SELECT citus_disable_node('localhost', :worker_2_port);
SELECT public.wait_until_metadata_sync();
SELECT master_get_active_worker_nodes();

-- add some shard placements to the cluster
SET citus.shard_count TO 16;
SET citus.shard_replication_factor TO 1;

-- test warnings on setting the deprecated guc for replication model
BEGIN;
SET citus.replication_model to 'statement';
ROLLBACK;

-- check that the rebalancer works even if there are no distributed tables
SELECT * FROM get_rebalance_table_shards_plan();
SELECT * FROM rebalance_table_shards();

-- TODO: Figure out why this is necessary, rebalance_table_shards shouldn't
-- insert stuff into pg_dist_colocation
TRUNCATE pg_dist_colocation;
SELECT run_command_on_workers('TRUNCATE pg_dist_colocation');
ALTER SEQUENCE pg_catalog.pg_dist_colocationid_seq RESTART 1390000;

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

CREATE TABLE cluster_management_test (col_1 text, col_2 int);
SELECT create_distributed_table('cluster_management_test', 'col_1', 'hash');

-- see that there are some active placements in the candidate node
SELECT shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement WHERE nodeport=:worker_2_port;

-- try to remove a node with active placements and see that node removal is failed
SELECT master_remove_node('localhost', :worker_2_port);
SELECT master_get_active_worker_nodes();

-- insert a row so that citus_disable_node() exercises closing connections
CREATE TABLE test_reference_table (y int primary key, name text);
SELECT create_reference_table('test_reference_table');
INSERT INTO test_reference_table VALUES (1, '1');

-- try to remove a node with active placements and reference tables
SELECT citus_remove_node('localhost', :worker_2_port);

-- try to disable a node with active placements
-- which should fail because there are some placements
-- which are the only placements for a given shard
SELECT citus_disable_node('localhost', :worker_2_port);

SELECT master_get_active_worker_nodes();

-- try to disable a node which does not exist and see that an error is thrown
SELECT citus_disable_node('localhost.noexist', 2345);

-- drop the table without leaving a shard placement behind (messes up other tests)
SELECT master_activate_node('localhost', :worker_2_port);

DROP TABLE test_reference_table, cluster_management_test;

-- create users like this so results of community and enterprise are same
SET client_min_messages TO ERROR;
CREATE USER non_super_user;
CREATE USER node_metadata_user;
SELECT 1 FROM run_command_on_workers('CREATE USER node_metadata_user');
RESET client_min_messages;
GRANT EXECUTE ON FUNCTION master_activate_node(text,int) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION master_add_inactive_node(text,int,int,noderole,name) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION master_add_node(text,int,int,noderole,name) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION master_add_secondary_node(text,int,text,int,name) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION citus_disable_node(text,int,bool) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION citus_disable_node_and_wait(text,int,bool) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION master_remove_node(text,int) TO node_metadata_user;
GRANT EXECUTE ON FUNCTION master_update_node(int,text,int,bool,int) TO node_metadata_user;

-- user needs permission for the pg_dist_node and pg_dist_local_group for metadata syncing
SELECT run_command_on_workers('GRANT ALL ON pg_dist_node TO node_metadata_user');
SELECT run_command_on_workers('GRANT ALL ON pg_dist_local_group TO node_metadata_user');
SELECT run_command_on_workers('GRANT ALL ON ALL TABLES IN SCHEMA citus TO node_metadata_user');
SELECT run_command_on_workers('GRANT ALL ON SCHEMA citus TO node_metadata_user');

SELECT master_remove_node('localhost', :worker_2_port);

-- Removing public schema from pg_dist_object because it breaks the next tests
DELETE FROM pg_catalog.pg_dist_object WHERE objid = 'public'::regnamespace::oid;
DELETE FROM pg_catalog.pg_dist_object WHERE objid = (SELECT oid FROM pg_extension WHERE extname = 'plpgsql');

-- try to manipulate node metadata via non-super user
SET ROLE non_super_user;
SELECT 1 FROM master_add_inactive_node('localhost', :worker_2_port + 1);
SELECT 1 FROM master_activate_node('localhost', :worker_2_port + 1);
SELECT 1 FROM citus_disable_node('localhost', :worker_2_port + 1);
SELECT 1 FROM master_remove_node('localhost', :worker_2_port + 1);
SELECT 1 FROM master_add_node('localhost', :worker_2_port + 1);
SELECT 1 FROM master_add_secondary_node('localhost', :worker_2_port + 2, 'localhost', :worker_2_port);
SELECT master_update_node(nodeid, 'localhost', :worker_2_port + 3) FROM pg_dist_node WHERE nodeport = :worker_2_port;

-- try to manipulate node metadata via privileged user
SET ROLE node_metadata_user;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
BEGIN;
SELECT 1 FROM master_add_inactive_node('localhost', :worker_2_port);
SELECT 1 FROM master_remove_node('localhost', :worker_2_port);
SELECT 1 FROM master_add_secondary_node('localhost', :worker_2_port + 2, 'localhost', :worker_1_port);
SELECT master_update_node(nodeid, 'localhost', :worker_2_port + 3) FROM pg_dist_node WHERE nodeport = :worker_2_port;
SELECT nodename, nodeport, noderole FROM pg_dist_node ORDER BY nodeport;
ABORT;

\c - postgres - :master_port
SET citus.next_shard_id TO 1220000;
SET citus.shard_count TO 16;
SET citus.shard_replication_factor TO 1;
SELECT master_get_active_worker_nodes();

-- restore the node for next tests
SELECT * FROM master_add_node('localhost', :worker_2_port);
ALTER SEQUENCE pg_dist_node_nodeid_seq RESTART WITH 7;
ALTER SEQUENCE pg_dist_groupid_seq RESTART WITH 6;


CREATE TABLE cluster_management_test (col_1 text, col_2 int);
SELECT create_distributed_table('cluster_management_test', 'col_1', 'hash');

-- try to remove a node with active placements and see that node removal is failed
SELECT master_remove_node('localhost', :worker_2_port);

-- mark all placements in the candidate node as inactive
SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport=:worker_2_port \gset
UPDATE pg_dist_placement SET shardstate=3 WHERE groupid=:worker_2_group;
-- manual updates to pg_dist* tables are not automatically reflected to the workers, so we manually do that too
SELECT run_command_on_workers('UPDATE pg_dist_placement SET shardstate=3 WHERE groupid=' || :'worker_2_group');
SELECT shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement WHERE nodeport=:worker_2_port;

-- try to remove a node with only inactive placements and see that removal still fails
SELECT master_remove_node('localhost', :worker_2_port);
SELECT master_get_active_worker_nodes();

-- mark all placements in the candidate node as to be deleted
UPDATE pg_dist_placement SET shardstate=4 WHERE groupid=:worker_2_group;
SELECT run_command_on_workers('UPDATE pg_dist_placement SET shardstate=4 WHERE groupid=' || :'worker_2_group');
SELECT shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement WHERE nodeport=:worker_2_port;
CREATE TABLE cluster_management_test_colocated (col_1 text, col_2 int);
-- Check that we warn the user about colocated shards that will not get created for shards that do not have active placements
SELECT create_distributed_table('cluster_management_test_colocated', 'col_1', 'hash', colocate_with => 'cluster_management_test');

-- Check that colocated shards don't get created for shards that are to be deleted
SELECT logicalrelid, shardid, shardstate, nodename, nodeport FROM pg_dist_shard_placement NATURAL JOIN pg_dist_shard ORDER BY shardstate, shardid;

-- clean-up
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
UPDATE pg_dist_placement SET shardstate=1 WHERE groupid=:worker_2_group;
SELECT run_command_on_workers('UPDATE pg_dist_placement SET shardstate=1 WHERE groupid=' || :'worker_2_group');
SET client_min_messages TO ERROR;
DROP TABLE cluster_management_test_colocated;
RESET client_min_messages;

-- when there is no primary we should get a pretty error
UPDATE pg_dist_node SET noderole = 'secondary' WHERE nodeport=:worker_2_port;
SELECT * FROM cluster_management_test;

-- when there is no node at all in the group we should get a different error
DELETE FROM pg_dist_node WHERE nodeport=:worker_2_port;
SELECT run_command_on_workers('DELETE FROM pg_dist_node WHERE nodeport=' || :'worker_2_port');
SELECT * FROM cluster_management_test;

-- clean-up
SELECT * INTO old_placements FROM pg_dist_placement WHERE groupid = :worker_2_group;
DELETE FROM pg_dist_placement WHERE groupid = :worker_2_group;
SELECT master_add_node('localhost', :worker_2_port) AS new_node \gset
INSERT INTO pg_dist_placement SELECT * FROM old_placements;
SELECT groupid AS new_group FROM pg_dist_node WHERE nodeid = :new_node \gset
UPDATE pg_dist_placement SET groupid = :new_group WHERE groupid = :worker_2_group;
SELECT run_command_on_workers('UPDATE pg_dist_placement SET groupid = ' || :'new_group' || ' WHERE groupid = ' || :'worker_2_group');
SELECT start_metadata_sync_to_node('localhost', :worker_2_port);

-- test that you are allowed to remove secondary nodes even if there are placements
SELECT 1 FROM master_add_node('localhost', 9990, groupid => :new_group, noderole => 'secondary');
SELECT master_remove_node('localhost', :worker_2_port);
SELECT master_remove_node('localhost', 9990);

-- clean-up
DROP TABLE cluster_management_test;

-- check that adding/removing nodes are propagated to nodes with metadata
SELECT master_remove_node('localhost', :worker_2_port);
SELECT start_metadata_sync_to_node('localhost', :worker_1_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
\c - - - :worker_1_port
SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
\c - - - :master_port
SELECT master_remove_node('localhost', :worker_2_port);
\c - - - :worker_1_port
SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
\c - - - :master_port

-- check that added nodes are not propagated to nodes without metadata
SELECT stop_metadata_sync_to_node('localhost', :worker_1_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
\c - - - :worker_1_port
SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
\c - - - :master_port

-- check that removing two nodes in the same transaction works
SELECT
	master_remove_node('localhost', :worker_1_port),
	master_remove_node('localhost', :worker_2_port);
SELECT count(1) FROM pg_dist_node;

-- check that adding two nodes in the same transaction works
SELECT
	master_add_node('localhost', :worker_1_port),
	master_add_node('localhost', :worker_2_port);
SELECT * FROM pg_dist_node ORDER BY nodeid;

-- check that mixed add/remove node commands work fine inside transaction
BEGIN;
SELECT master_remove_node('localhost', :worker_2_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
SELECT master_remove_node('localhost', :worker_2_port);
COMMIT;

SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;

SELECT start_metadata_sync_to_node('localhost', :worker_1_port);
BEGIN;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
SELECT master_remove_node('localhost', :worker_2_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
COMMIT;

SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;

\c - - - :worker_1_port
SELECT nodename, nodeport FROM pg_dist_node WHERE nodename='localhost' AND nodeport=:worker_2_port;
\c - - - :master_port

SELECT master_remove_node(nodename, nodeport) FROM pg_dist_node;
SELECT 1 FROM master_add_node('localhost', :worker_1_port);
SELECT 1 FROM master_add_node('localhost', :worker_2_port);

-- check that a distributed table can be created after adding a node in a transaction
SET citus.shard_count TO 4;

SELECT master_remove_node('localhost', :worker_2_port);
BEGIN;
SELECT 1 FROM master_add_node('localhost', :worker_2_port);
CREATE TABLE temp(col1 text, col2 int);
SELECT create_distributed_table('temp', 'col1');
INSERT INTO temp VALUES ('row1', 1);
INSERT INTO temp VALUES ('row2', 2);
COMMIT;

SELECT col1, col2 FROM temp ORDER BY col1;

SELECT
	count(*)
FROM
	pg_dist_shard_placement, pg_dist_shard
WHERE
	pg_dist_shard_placement.shardid = pg_dist_shard.shardid
	AND pg_dist_shard.logicalrelid = 'temp'::regclass
	AND pg_dist_shard_placement.nodeport = :worker_2_port;

DROP TABLE temp;

\c - - - :worker_1_port
DELETE FROM pg_dist_partition;
DELETE FROM pg_dist_shard;
DELETE FROM pg_dist_placement;
DELETE FROM pg_dist_node;
\c - - - :master_port
SELECT stop_metadata_sync_to_node('localhost', :worker_1_port);
SELECT stop_metadata_sync_to_node('localhost', :worker_2_port);

-- check that you can't add a primary to a non-default cluster
SELECT master_add_node('localhost', 9999, nodecluster => 'olap');

-- check that you can't add more than one primary to a group
SELECT groupid AS worker_1_group FROM pg_dist_node WHERE nodeport = :worker_1_port \gset
SELECT master_add_node('localhost', 9999, groupid => :worker_1_group, noderole => 'primary');

-- check that you can add secondaries and unavailable nodes to a group
SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport = :worker_2_port \gset
SELECT 1 FROM master_add_node('localhost', 9998, groupid => :worker_1_group, noderole => 'secondary');
SELECT 1 FROM master_add_node('localhost', 9997, groupid => :worker_1_group, noderole => 'unavailable');
-- add_inactive_node also works with secondaries
SELECT 1 FROM master_add_inactive_node('localhost', 9996, groupid => :worker_2_group, noderole => 'secondary');

-- check that you can add a seconary to a non-default cluster, and activate it, and remove it
SELECT master_add_inactive_node('localhost', 9999, groupid => :worker_2_group, nodecluster => 'olap', noderole => 'secondary');
SELECT master_activate_node('localhost', 9999);
SELECT citus_disable_node('localhost', 9999);
SELECT public.wait_until_metadata_sync();
SELECT master_remove_node('localhost', 9999);

-- check that you can't manually add two primaries to a group
INSERT INTO pg_dist_node (nodename, nodeport, groupid, noderole)
  VALUES ('localhost', 5000, :worker_1_group, 'primary');
UPDATE pg_dist_node SET noderole = 'primary'
  WHERE groupid = :worker_1_group AND nodeport = 9998;

-- check that you can't manually add a primary to a non-default cluster
INSERT INTO pg_dist_node (nodename, nodeport, groupid, noderole, nodecluster)
  VALUES ('localhost', 5000, 1000, 'primary', 'olap');
UPDATE pg_dist_node SET nodecluster = 'olap'
  WHERE nodeport = :worker_1_port;

-- check that you /can/ add a secondary node to a non-default cluster
SELECT groupid AS worker_2_group FROM pg_dist_node WHERE nodeport = :worker_2_port \gset
SELECT master_add_node('localhost', 8888, groupid => :worker_1_group, noderole => 'secondary', nodecluster=> 'olap');

-- check that super-long cluster names are truncated
SELECT master_add_node('localhost', 8887, groupid => :worker_1_group, noderole => 'secondary', nodecluster=>
	'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
	'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
	'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
	'thisisasixtyfourcharacterstringrepeatedfourtimestomake256chars.'
	'overflow'
);
SELECT * FROM pg_dist_node WHERE nodeport=8887;

-- don't remove the secondary and unavailable nodes, check that no commands are sent to
-- them in any of the remaining tests

-- master_add_secondary_node lets you skip looking up the groupid
SELECT master_add_secondary_node('localhost', 9995, 'localhost', :worker_1_port);
SELECT master_add_secondary_node('localhost', 9994, primaryname => 'localhost', primaryport => :worker_2_port);
SELECT master_add_secondary_node('localhost', 9993, 'localhost', 2000);
SELECT master_add_secondary_node('localhost', 9992, 'localhost', :worker_1_port, nodecluster => 'second-cluster');

SELECT nodeid AS worker_1_node FROM pg_dist_node WHERE nodeport=:worker_1_port \gset

-- master_update_node checks node exists
SELECT master_update_node(100, 'localhost', 8000);
-- master_update_node disallows aliasing existing node
SELECT master_update_node(:worker_1_node, 'localhost', :worker_2_port);

-- master_update_node moves a node
SELECT master_update_node(:worker_1_node, 'somehost', 9000);

SELECT * FROM pg_dist_node WHERE nodeid = :worker_1_node;

-- cleanup
SELECT master_update_node(:worker_1_node, 'localhost', :worker_1_port);
SELECT * FROM pg_dist_node WHERE nodeid = :worker_1_node;

SET client_min_messages TO ERROR;
SELECT start_metadata_sync_to_node(nodename, nodeport) FROM pg_dist_node WHERE isactive = 't' and noderole = 'primary';
RESET client_min_messages;

SET citus.shard_replication_factor TO 1;

CREATE TABLE test_dist (x int, y int);
SELECT create_distributed_table('test_dist', 'x');

-- testing behaviour when setting shouldhaveshards to false on partially empty node
SELECT * from master_set_node_property('localhost', :worker_2_port, 'shouldhaveshards', false);
CREATE TABLE test_dist_colocated (x int, y int);
CREATE TABLE test_dist_non_colocated (x int, y int);
CREATE TABLE test_dist_colocated_with_non_colocated (x int, y int);
CREATE TABLE test_ref (a int, b int);
SELECT create_distributed_table('test_dist_colocated', 'x');
SELECT create_distributed_table('test_dist_non_colocated', 'x', colocate_with => 'none');
SELECT create_distributed_table('test_dist_colocated_with_non_colocated', 'x', colocate_with => 'test_dist_non_colocated');
SELECT create_reference_table('test_ref');

-- colocated tables should still be placed on shouldhaveshards false nodes for safety
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist_colocated'::regclass GROUP BY nodeport ORDER BY nodeport;

-- non colocated tables should not be placed on shouldhaveshards false nodes anymore
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist_non_colocated'::regclass GROUP BY nodeport ORDER BY nodeport;

-- this table should be colocated with the test_dist_non_colocated table
-- correctly only on nodes with shouldhaveshards true
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist_colocated_with_non_colocated'::regclass GROUP BY nodeport ORDER BY nodeport;

-- reference tables should be placed on with shouldhaveshards false
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_ref'::regclass GROUP BY nodeport ORDER BY nodeport;

-- cleanup for next test
DROP TABLE test_dist, test_ref, test_dist_colocated, test_dist_non_colocated, test_dist_colocated_with_non_colocated;

-- testing behaviour when setting shouldhaveshards to false on fully empty node
SELECT * from master_set_node_property('localhost', :worker_2_port, 'shouldhaveshards', false);
CREATE TABLE test_dist (x int, y int);
CREATE TABLE test_dist_colocated (x int, y int);
CREATE TABLE test_dist_non_colocated (x int, y int);
CREATE TABLE test_ref (a int, b int);
SELECT create_distributed_table('test_dist', 'x');
SELECT create_reference_table('test_ref');

-- distributed tables should not be placed on nodes with shouldhaveshards false
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist'::regclass GROUP BY nodeport ORDER BY nodeport;

-- reference tables should be placed on nodes with shouldhaveshards false
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_ref'::regclass GROUP BY nodeport ORDER BY nodeport;

SELECT * from master_set_node_property('localhost', :worker_2_port, 'shouldhaveshards', true);

-- distributed tables should still not be placed on nodes that were switched to
-- shouldhaveshards true
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist'::regclass GROUP BY nodeport ORDER BY nodeport;

-- reference tables should still be placed on all nodes with isdatanode 'true'
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_ref'::regclass GROUP BY nodeport ORDER BY nodeport;

SELECT create_distributed_table('test_dist_colocated', 'x');
SELECT create_distributed_table('test_dist_non_colocated', 'x', colocate_with => 'none');

-- colocated tables should not be placed on nodedes that were switched to
-- shouldhaveshards true
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist_colocated'::regclass GROUP BY nodeport ORDER BY nodeport;


-- non colocated tables should be placed on nodedes that were switched to
-- shouldhaveshards true
SELECT nodeport, count(*)
FROM pg_dist_shard JOIN pg_dist_shard_placement USING (shardid)
WHERE logicalrelid = 'test_dist_non_colocated'::regclass GROUP BY nodeport ORDER BY nodeport;

SELECT * from master_set_node_property('localhost', :worker_2_port, 'bogusproperty', false);

DROP TABLE test_dist, test_ref, test_dist_colocated, test_dist_non_colocated;

-- verify that at the end of this file, all primary nodes have metadata synced
SELECT bool_and(hasmetadata) AND bool_and(metadatasynced) FROM pg_dist_node WHERE isactive = 't' and noderole = 'primary';
