Refactor query routing into its own module (#22)

* Refactor query routing into its own module

* commments; tests; dead code

* error message

* safer startup

* hm

* dont have to be public

* wow

* fix ci

* ok

* nl

* no more silent errors

tests/sharding/partition_hash_test_setup.sql

@@ -23,4 +23,4 @@ SELECT * FROM shard_0 ORDER BY id LIMIT 10;
 SELECT * FROM shard_1 ORDER BY id LIMIT 10;
 SELECT * FROM shard_2 ORDER BY id LIMIT 10;
 SELECT * FROM shard_3 ORDER BY id LIMIT 10;
-SELECT * FROM shard_4 ORDER BY id LIMIT 10;
+SELECT * FROM shard_4 ORDER BY id LIMIT 10;

tests/sharding/query_routing_setup.sql

@@ -58,4 +58,4 @@ GRANT ALL ON TABLE data TO sharding_user;
 
 \c shard2
 GRANT ALL ON SCHEMA public TO sharding_user;
-GRANT ALL ON TABLE data TO sharding_user;
+GRANT ALL ON TABLE data TO sharding_user;

tests/sharding/query_routing_test_insert.sql

@@ -1,3 +1,5 @@
+\set ON_ERROR_STOP on
+
 SET SHARDING KEY TO '1';
 INSERT INTO data (id, value) VALUES (1, 'value_1');
 
@@ -44,4 +46,10 @@ SET SHARDING KEY TO '15';
 INSERT INTO data (id, value) VALUES (15, 'value_1');
 
 SET SHARDING KEY TO '16';
-INSERT INTO data (id, value) VALUES (16, 'value_1');
+INSERT INTO data (id, value) VALUES (16, 'value_1');
+
+set sharding key to '17';
+INSERT INTO data (id, value) VALUES (17, 'value_1');
+
+SeT SHaRDInG KeY to '18';
+INSERT INTO data (id, value) VALUES (18, 'value_1');

tests/sharding/query_routing_test_primary_replica.sql

@@ -1,3 +1,5 @@
+\set ON_ERROR_STOP on
+
 SET SERVER ROLE TO 'primary';
 SET SHARDING KEY TO '1';
 INSERT INTO data (id, value) VALUES (1, 'value_1');
@@ -88,6 +90,8 @@ SELECT * FROM data WHERE id = 9;
 
 ---
 
+\set ON_ERROR_STOP on
+
 SET SERVER ROLE TO 'primary';
 SET SHARDING KEY TO '10';
 INSERT INTO data (id, value) VALUES (10, 'value_1');
@@ -143,3 +147,7 @@ SELECT 1;
 
 SET SERVER ROLE TO 'replica';
 SELECT 1;
+
+set server role to 'replica';
+SeT SeRver Role TO 'PrImARY';
+select 1;

tests/sharding/query_routing_test_select.sql

@@ -1,3 +1,5 @@
+\set ON_ERROR_STOP on
+
 SET SHARDING KEY TO '1';
 SELECT * FROM data WHERE id = 1;
 
@@ -44,4 +46,4 @@ SET SHARDING KEY TO '15';
 SELECT * FROM data WHERE id = 15;
 
 SET SHARDING KEY TO '16';
-SELECT * FROM data WHERE id = 16;
+SELECT * FROM data WHERE id = 16;

tests/sharding/query_routing_test_validate.sql

@@ -8,4 +8,4 @@ SELECT * FROM data;
 
 \c shard2
 
-SELECT * FROM data;
+SELECT * FROM data;