redict/tests/unit/pubsubshard.tcl
Harkrishn Patro 4065b4f27e
Sharded pubsub publish messagebulk as smessage (#10792)
To easily distinguish between sharded channel message and a global
channel message, introducing `smessage` (instead of `message`) as
message bulk for sharded channel publish message.

This is gonna be a breaking change in 7.0.1!

Background:
Sharded pubsub introduced in redis 7.0, but after the release we quickly
realized that the fact that it's problematic that the client can't distinguish
between normal (global) pubsub messages and sharded ones.
This is important because the same connection can subscribe to both,
but messages sent to one pubsub system are not propagated to the
other (they're completely separate), so if one connection is used to
subscribe to both, we need to assist the client library to know which
message it got so it can forward it to the correct callback.
2022-05-31 08:03:59 +03:00

137 lines
4.4 KiB
Tcl

start_server {tags {"pubsubshard external:skip"}} {
test "SPUBLISH/SSUBSCRIBE basics" {
set rd1 [redis_deferring_client]
# subscribe to two channels
assert_equal {1} [ssubscribe $rd1 {chan1}]
assert_equal {2} [ssubscribe $rd1 {chan2}]
assert_equal 1 [r SPUBLISH chan1 hello]
assert_equal 1 [r SPUBLISH chan2 world]
assert_equal {smessage chan1 hello} [$rd1 read]
assert_equal {smessage chan2 world} [$rd1 read]
# unsubscribe from one of the channels
sunsubscribe $rd1 {chan1}
assert_equal 0 [r SPUBLISH chan1 hello]
assert_equal 1 [r SPUBLISH chan2 world]
assert_equal {smessage chan2 world} [$rd1 read]
# unsubscribe from the remaining channel
sunsubscribe $rd1 {chan2}
assert_equal 0 [r SPUBLISH chan1 hello]
assert_equal 0 [r SPUBLISH chan2 world]
# clean up clients
$rd1 close
}
test "SPUBLISH/SSUBSCRIBE with two clients" {
set rd1 [redis_deferring_client]
set rd2 [redis_deferring_client]
assert_equal {1} [ssubscribe $rd1 {chan1}]
assert_equal {1} [ssubscribe $rd2 {chan1}]
assert_equal 2 [r SPUBLISH chan1 hello]
assert_equal {smessage chan1 hello} [$rd1 read]
assert_equal {smessage chan1 hello} [$rd2 read]
# clean up clients
$rd1 close
$rd2 close
}
test "PUBLISH/SUBSCRIBE after UNSUBSCRIBE without arguments" {
set rd1 [redis_deferring_client]
assert_equal {1} [ssubscribe $rd1 {chan1}]
assert_equal {2} [ssubscribe $rd1 {chan2}]
assert_equal {3} [ssubscribe $rd1 {chan3}]
sunsubscribe $rd1
assert_equal 0 [r SPUBLISH chan1 hello]
assert_equal 0 [r SPUBLISH chan2 hello]
assert_equal 0 [r SPUBLISH chan3 hello]
# clean up clients
$rd1 close
}
test "SUBSCRIBE to one channel more than once" {
set rd1 [redis_deferring_client]
assert_equal {1 1 1} [ssubscribe $rd1 {chan1 chan1 chan1}]
assert_equal 1 [r SPUBLISH chan1 hello]
assert_equal {smessage chan1 hello} [$rd1 read]
# clean up clients
$rd1 close
}
test "UNSUBSCRIBE from non-subscribed channels" {
set rd1 [redis_deferring_client]
assert_equal {0} [sunsubscribe $rd1 {foo}]
assert_equal {0} [sunsubscribe $rd1 {bar}]
assert_equal {0} [sunsubscribe $rd1 {quux}]
# clean up clients
$rd1 close
}
test "PUBSUB command basics" {
r pubsub shardnumsub abc def
} {abc 0 def 0}
test "SPUBLISH/SSUBSCRIBE with two clients" {
set rd1 [redis_deferring_client]
set rd2 [redis_deferring_client]
assert_equal {1} [ssubscribe $rd1 {chan1}]
assert_equal {1} [ssubscribe $rd2 {chan1}]
assert_equal 2 [r SPUBLISH chan1 hello]
assert_equal "chan1 2" [r pubsub shardnumsub chan1]
assert_equal "chan1" [r pubsub shardchannels]
# clean up clients
$rd1 close
$rd2 close
}
test "SPUBLISH/SSUBSCRIBE with PUBLISH/SUBSCRIBE" {
set rd1 [redis_deferring_client]
set rd2 [redis_deferring_client]
assert_equal {1} [ssubscribe $rd1 {chan1}]
assert_equal {1} [subscribe $rd2 {chan1}]
assert_equal 1 [r SPUBLISH chan1 hello]
assert_equal 1 [r publish chan1 hello]
assert_equal "chan1 1" [r pubsub shardnumsub chan1]
assert_equal "chan1 1" [r pubsub numsub chan1]
assert_equal "chan1" [r pubsub shardchannels]
assert_equal "chan1" [r pubsub channels]
}
}
start_server {tags {"pubsubshard external:skip"}} {
start_server {tags {"pubsubshard external:skip"}} {
set node_0 [srv 0 client]
set node_0_host [srv 0 host]
set node_0_port [srv 0 port]
set node_1 [srv -1 client]
set node_1_host [srv -1 host]
set node_1_port [srv -1 port]
test {setup replication for following tests} {
$node_1 replicaof $node_0_host $node_0_port
wait_for_sync $node_1
}
test {publish message to master and receive on replica} {
set rd0 [redis_deferring_client node_0_host node_0_port]
set rd1 [redis_deferring_client node_1_host node_1_port]
assert_equal {1} [ssubscribe $rd1 {chan1}]
$rd0 SPUBLISH chan1 hello
assert_equal {smessage chan1 hello} [$rd1 read]
$rd0 SPUBLISH chan1 world
assert_equal {smessage chan1 world} [$rd1 read]
}
}
}