1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
create or replace function plproxy.get_cluster_version(cluster_name text)
returns integer as $$
begin
if cluster_name = 'testcluster' then
return 6;
end if;
raise exception 'no such cluster: %', cluster_name;
end; $$ language plpgsql;
create or replace function plproxy.get_cluster_partitions(cluster_name text)
returns setof text as $$
begin
if cluster_name = 'testcluster' then
return next 'host=127.0.0.1 dbname=test_part0';
return next 'host=127.0.0.1 dbname=test_part1';
return next 'host=127.0.0.1 dbname=test_part2';
return next 'host=127.0.0.1 dbname=test_part3';
return;
end if;
raise exception 'no such cluster: %', cluster_name;
end; $$ language plpgsql;
\c test_part0
create function test_multi(part integer, username text)
returns integer as $$ begin return 0; end; $$ language plpgsql;
\c test_part1
create function test_multi(part integer, username text)
returns integer as $$ begin return 1; end; $$ language plpgsql;
\c test_part2
create function test_multi(part integer, username text)
returns integer as $$ begin return 2; end; $$ language plpgsql;
\c test_part3
create function test_multi(part integer, username text)
returns integer as $$ begin return 3; end; $$ language plpgsql;
\c regression
create function test_multi(part integer, username text)
returns integer as $$ cluster 'testcluster'; run on int4(part); $$ language plproxy;
select test_multi(0, 'foo');
select test_multi(1, 'foo');
select test_multi(2, 'foo');
select test_multi(3, 'foo');
-- test RUN ON ALL
drop function test_multi(integer, text);
create function test_multi(part integer, username text)
returns setof integer as $$ cluster 'testcluster'; run on all; $$ language plproxy;
select test_multi(0, 'foo') order by 1;
-- test RUN ON 2
drop function test_multi(integer, text);
create function test_multi(part integer, username text)
returns setof integer as $$ cluster 'testcluster'; run on 2; $$ language plproxy;
select test_multi(0, 'foo');
-- test RUN ON RANDOM
select setseed(0.5);
drop function test_multi(integer, text);
create function test_multi(part integer, username text)
returns setof integer as $$ cluster 'testcluster'; run on any; $$ language plproxy;
-- expect that 100 calls use all partitions
select distinct test_multi(0, 'foo') from generate_series(1,100) order by 1;
|
