CREATE SCHEMA "blocking shard Move Fkeys Indexes";
SET search_path TO "blocking shard Move Fkeys Indexes";
SET citus.next_shard_id TO 8970000;
SET citus.next_placement_id TO 8770000;
SET citus.shard_count TO 4;
SET citus.shard_replication_factor TO 1;

-- create a non-superuser role
CREATE ROLE mx_rebalancer_blocking_role_ent WITH LOGIN;
GRANT ALL ON SCHEMA "blocking shard Move Fkeys Indexes" TO mx_rebalancer_blocking_role_ent;

-- connect with this new role
\c - mx_rebalancer_blocking_role_ent - :master_port
SET search_path TO "blocking shard Move Fkeys Indexes";
SET citus.next_shard_id TO 8970000;
SET citus.next_placement_id TO 8770000;
SET citus.shard_count TO 4;
SET citus.shard_replication_factor TO 1;

CREATE TABLE sensors(
measureid         integer,
eventdatetime     date,
measure_data      jsonb,
PRIMARY KEY (measureid, eventdatetime, measure_data))
PARTITION BY RANGE(eventdatetime);

CREATE TABLE sensors_old PARTITION OF sensors FOR VALUES FROM ('2000-01-01') TO ('2020-01-01');
CREATE TABLE sensors_2020_01_01 PARTITION OF sensors FOR VALUES FROM ('2020-01-01') TO ('2020-02-01');
CREATE TABLE sensors_news PARTITION OF sensors FOR VALUES FROM ('2020-05-01') TO ('2025-01-01');

CREATE INDEX index_on_parent ON sensors(lower(measureid::text));
CREATE INDEX index_on_child ON sensors_2020_01_01(lower(measure_data::text));
CREATE INDEX hash_index ON sensors USING HASH((measure_data->'IsFailed'));
CREATE INDEX index_with_include ON sensors ((measure_data->'IsFailed')) INCLUDE (measure_data, eventdatetime);

CREATE STATISTICS s1 (dependencies) ON measureid, eventdatetime FROM sensors;
CREATE STATISTICS s2 (dependencies) ON measureid, eventdatetime FROM sensors_2020_01_01;

ALTER INDEX index_on_parent ALTER COLUMN 1 SET STATISTICS 1000;
ALTER INDEX index_on_child ALTER COLUMN 1 SET STATISTICS 1000;

CLUSTER sensors_2020_01_01 USING index_on_child;
SELECT create_distributed_table('sensors', 'measureid', colocate_with:='none');

-- due to https://github.com/citusdata/citus/issues/5121
\c - postgres - :master_port
SET search_path TO "blocking shard Move Fkeys Indexes";

SELECT update_distributed_table_colocation('sensors_old', 'sensors');
SELECT update_distributed_table_colocation('sensors_2020_01_01', 'sensors');
SELECT update_distributed_table_colocation('sensors_news', 'sensors');

\c - mx_rebalancer_blocking_role_ent - :master_port
SET search_path TO "blocking shard Move Fkeys Indexes";
SET citus.shard_count TO 4;
SET citus.shard_replication_factor TO 1;
SET citus.next_shard_id TO 8970016;
SET citus.next_placement_id TO 8770016;

-- create a colocated distributed tables and create foreign keys FROM/TO
-- the partitions
CREATE TABLE colocated_dist_table (measureid integer PRIMARY KEY);
SELECT create_distributed_table('colocated_dist_table', 'measureid', colocate_with:='sensors');

CLUSTER colocated_dist_table USING colocated_dist_table_pkey;

CREATE TABLE colocated_partitioned_table(
	measureid         integer,
	eventdatetime     date,
	PRIMARY KEY (measureid, eventdatetime))
PARTITION BY RANGE(eventdatetime);

CREATE TABLE colocated_partitioned_table_2020_01_01 PARTITION OF colocated_partitioned_table FOR VALUES FROM ('2020-01-01') TO ('2020-02-01');
SELECT create_distributed_table('colocated_partitioned_table', 'measureid', colocate_with:='sensors');

CLUSTER colocated_partitioned_table_2020_01_01 USING colocated_partitioned_table_2020_01_01_pkey;

CREATE TABLE reference_table (measureid integer PRIMARY KEY);
SELECT create_reference_table('reference_table');

-- this table is used to make sure that index backed
-- replica identites can have clustered indexes
-- and no index statistics
CREATE TABLE index_backed_rep_identity(key int NOT NULL);
CREATE UNIQUE INDEX uqx ON index_backed_rep_identity(key);
ALTER TABLE index_backed_rep_identity REPLICA IDENTITY USING INDEX uqx;
CLUSTER index_backed_rep_identity USING uqx;
SELECT create_distributed_table('index_backed_rep_identity', 'key', colocate_with:='sensors');

-- from parent to regular dist
ALTER TABLE sensors ADD CONSTRAINT fkey_from_parent_to_dist FOREIGN KEY (measureid) REFERENCES colocated_dist_table(measureid);

-- from parent to parent
ALTER TABLE sensors ADD CONSTRAINT fkey_from_parent_to_parent FOREIGN KEY (measureid, eventdatetime) REFERENCES colocated_partitioned_table(measureid, eventdatetime);

-- from parent to child
ALTER TABLE sensors ADD CONSTRAINT fkey_from_parent_to_child FOREIGN KEY (measureid, eventdatetime) REFERENCES colocated_partitioned_table_2020_01_01(measureid, eventdatetime);

-- from parent to reference table
ALTER TABLE sensors ADD CONSTRAINT fkey_from_parent_to_ref FOREIGN KEY (measureid) REFERENCES reference_table(measureid);

-- from child to regular dist
ALTER TABLE sensors_2020_01_01 ADD CONSTRAINT fkey_from_child_to_dist FOREIGN KEY (measureid) REFERENCES colocated_dist_table(measureid);

-- from child to parent
ALTER TABLE sensors_2020_01_01 ADD CONSTRAINT fkey_from_child_to_parent FOREIGN KEY (measureid,eventdatetime) REFERENCES colocated_partitioned_table(measureid,eventdatetime);

-- from child to child
ALTER TABLE sensors_2020_01_01 ADD CONSTRAINT fkey_from_child_to_child FOREIGN KEY (measureid,eventdatetime) REFERENCES colocated_partitioned_table_2020_01_01(measureid,eventdatetime);

-- from child to reference table
ALTER TABLE sensors_2020_01_01 ADD CONSTRAINT fkey_from_child_to_ref FOREIGN KEY (measureid) REFERENCES reference_table(measureid);

-- load some data
INSERT INTO reference_table SELECT i FROM generate_series(0,1000)i;
INSERT INTO colocated_dist_table SELECT i FROM generate_series(0,1000)i;
INSERT INTO colocated_partitioned_table SELECT i, '2020-01-05' FROM generate_series(0,1000)i;
INSERT INTO sensors SELECT i, '2020-01-05', '{}' FROM generate_series(0,1000)i;

\c - postgres - :worker_1_port
SET search_path TO "blocking shard Move Fkeys Indexes", public, pg_catalog;

-- show the current state of the constraints
SELECT "Constraint", "Definition" FROM table_fkeys WHERE relid='sensors_8970000'::regclass ORDER BY 1,2;
SELECT "Constraint", "Definition" FROM table_fkeys WHERE relid='sensors_2020_01_01_8970008'::regclass ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='sensors_8970000' ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='sensors_2020_01_01_8970008' ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='index_backed_rep_identity_8970029' ORDER BY 1,2;
SELECT indisclustered FROM pg_index where indisclustered AND indrelid = 'index_backed_rep_identity_8970029'::regclass;

SELECT stxname FROM pg_statistic_ext
WHERE stxnamespace IN (
	SELECT oid
	FROM pg_namespace
	WHERE nspname IN ('blocking shard Move Fkeys Indexes')
)
ORDER BY stxname ASC;

SELECT count(*) FROM pg_index
WHERE indisclustered
	and
indrelid IN
('sensors_2020_01_01_8970008'::regclass, 'colocated_dist_table_8970016'::regclass, 'colocated_partitioned_table_2020_01_01_8970024'::regclass);
\c - - - :master_port
-- make sure that constrainst are moved sanely with logical replication
SELECT citus_move_shard_placement(8970000, 'localhost', :worker_1_port, 'localhost', :worker_2_port, shard_transfer_mode:='block_writes');
CALL citus_cleanup_orphaned_shards();


\c - postgres - :worker_2_port
SET search_path TO "blocking shard Move Fkeys Indexes", public, pg_catalog;
SELECT "Constraint", "Definition" FROM table_fkeys WHERE relid='sensors_8970000'::regclass ORDER BY 1,2;
SELECT "Constraint", "Definition" FROM table_fkeys WHERE relid='sensors_2020_01_01_8970008'::regclass ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='sensors_8970000' ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='sensors_2020_01_01_8970008' ORDER BY 1,2;
SELECT tablename, indexdef FROM pg_indexes WHERE tablename ='index_backed_rep_identity_8970029' ORDER BY 1,2;
SELECT indisclustered FROM pg_index where indisclustered AND indrelid = 'index_backed_rep_identity_8970029'::regclass;

SELECT stxname FROM pg_statistic_ext
WHERE stxnamespace IN (
	SELECT oid
	FROM pg_namespace
	WHERE nspname IN ('blocking shard Move Fkeys Indexes')
)
ORDER BY stxname ASC;

SELECT count(*) FROM pg_index
WHERE indisclustered
	and
indrelid IN
('sensors_2020_01_01_8970008'::regclass, 'colocated_dist_table_8970016'::regclass, 'colocated_partitioned_table_2020_01_01_8970024'::regclass);

\c - mx_rebalancer_blocking_role_ent - :master_port
-- verify that the data is consistent
SET search_path TO "blocking shard Move Fkeys Indexes";
SELECT count(*) FROM reference_table;
SELECT count(*) FROM colocated_partitioned_table;
SELECT count(*) FROM colocated_dist_table;
SELECT count(*) FROM sensors;

-- we should be able to change/drop constraints
ALTER INDEX index_on_parent RENAME TO index_on_parent_renamed;
ALTER INDEX index_on_child RENAME TO index_on_child_renamed;

ALTER INDEX index_on_parent_renamed ALTER COLUMN 1 SET STATISTICS 200;
ALTER INDEX index_on_child_renamed ALTER COLUMN 1 SET STATISTICS 200;

DROP STATISTICS s1,s2;

DROP INDEX index_on_parent_renamed;
DROP INDEX index_on_child_renamed;
ALTER TABLE sensors DROP CONSTRAINT fkey_from_parent_to_dist;
ALTER TABLE sensors DROP CONSTRAINT fkey_from_parent_to_parent;
ALTER TABLE sensors DROP CONSTRAINT fkey_from_parent_to_child;
ALTER TABLE sensors_2020_01_01 DROP CONSTRAINT fkey_from_child_to_dist;
ALTER TABLE sensors_2020_01_01 DROP CONSTRAINT fkey_from_child_to_parent;
ALTER TABLE sensors_2020_01_01 DROP CONSTRAINT fkey_from_child_to_child;

-- cleanup
\c - postgres - :master_port
DROP SCHEMA "blocking shard Move Fkeys Indexes" CASCADE;
