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422 lines
16 KiB
Tcl
422 lines
16 KiB
Tcl
# SPDX-FileCopyrightText: 2024 Redict Contributors
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# SPDX-FileCopyrightText: 2024 Salvatore Sanfilippo <antirez at gmail dot com>
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#
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# SPDX-License-Identifier: BSD-3-Clause
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# SPDX-License-Identifier: LGPL-3.0-only
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# Primitive tests on cluster-enabled redict using redict-cli
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source tests/support/cli.tcl
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# make sure the test infra won't use SELECT
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set old_singledb $::singledb
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set ::singledb 1
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# cluster creation is complicated with TLS, and the current tests don't really need that coverage
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tags {tls:skip external:skip cluster} {
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# start three servers
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set base_conf [list cluster-enabled yes cluster-node-timeout 1000]
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start_multiple_servers 3 [list overrides $base_conf] {
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set node1 [srv 0 client]
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set node2 [srv -1 client]
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set node3 [srv -2 client]
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set node3_pid [srv -2 pid]
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set node3_rd [redict_deferring_client -2]
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test {Create 3 node cluster} {
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exec src/redict-cli --cluster-yes --cluster create \
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127.0.0.1:[srv 0 port] \
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127.0.0.1:[srv -1 port] \
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127.0.0.1:[srv -2 port]
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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}
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test "Run blocking command on cluster node3" {
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# key9184688 is mapped to slot 10923 (first slot of node 3)
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$node3_rd brpop key9184688 0
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$node3_rd flush
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wait_for_condition 50 100 {
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[s -2 blocked_clients] eq {1}
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} else {
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fail "Client not blocked"
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}
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}
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test "Perform a Resharding" {
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exec src/redict-cli --cluster-yes --cluster reshard 127.0.0.1:[srv -2 port] \
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--cluster-to [$node1 cluster myid] \
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--cluster-from [$node3 cluster myid] \
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--cluster-slots 1
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}
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test "Verify command got unblocked after resharding" {
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# this (read) will wait for the node3 to realize the new topology
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assert_error {*MOVED*} {$node3_rd read}
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# verify there are no blocked clients
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assert_equal [s 0 blocked_clients] {0}
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assert_equal [s -1 blocked_clients] {0}
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assert_equal [s -2 blocked_clients] {0}
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}
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test "Wait for cluster to be stable" {
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# Cluster check just verifies the config state is self-consistent,
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# waiting for cluster_state to be okay is an independent check that all the
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# nodes actually believe each other are healthy, prevent cluster down error.
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wait_for_condition 1000 50 {
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv 0 port]}] == 0 &&
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv -1 port]}] == 0 &&
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv -2 port]}] == 0 &&
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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}
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set node1_rd [redict_deferring_client 0]
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test "use previous hostip in \"cluster-preferred-endpoint-type unknown-endpoint\" mode" {
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# backup and set cluster-preferred-endpoint-type unknown-endpoint
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set endpoint_type_before_set [lindex [split [$node1 CONFIG GET cluster-preferred-endpoint-type] " "] 1]
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$node1 CONFIG SET cluster-preferred-endpoint-type unknown-endpoint
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# when redict-cli not in cluster mode, return MOVE with empty host
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set slot_for_foo [$node1 CLUSTER KEYSLOT foo]
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assert_error "*MOVED $slot_for_foo :*" {$node1 set foo bar}
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# when in cluster mode, redirect using previous hostip
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assert_equal "[exec src/redict-cli -h 127.0.0.1 -p [srv 0 port] -c set foo bar]" {OK}
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assert_match "[exec src/redict-cli -h 127.0.0.1 -p [srv 0 port] -c get foo]" {bar}
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assert_equal [$node1 CONFIG SET cluster-preferred-endpoint-type "$endpoint_type_before_set"] {OK}
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}
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test "Sanity test push cmd after resharding" {
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assert_error {*MOVED*} {$node3 lpush key9184688 v1}
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$node1_rd brpop key9184688 0
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$node1_rd flush
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wait_for_condition 50 100 {
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[s 0 blocked_clients] eq {1}
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} else {
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puts "Client not blocked"
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puts "read from blocked client: [$node1_rd read]"
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fail "Client not blocked"
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}
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$node1 lpush key9184688 v2
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assert_equal {key9184688 v2} [$node1_rd read]
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}
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$node3_rd close
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test "Run blocking command again on cluster node1" {
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$node1 del key9184688
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# key9184688 is mapped to slot 10923 which has been moved to node1
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$node1_rd brpop key9184688 0
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$node1_rd flush
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wait_for_condition 50 100 {
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[s 0 blocked_clients] eq {1}
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} else {
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fail "Client not blocked"
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}
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}
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test "Kill a cluster node and wait for fail state" {
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# kill node3 in cluster
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pause_process $node3_pid
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {fail} &&
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[CI 1 cluster_state] eq {fail}
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} else {
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fail "Cluster doesn't fail"
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}
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}
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test "Verify command got unblocked after cluster failure" {
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assert_error {*CLUSTERDOWN*} {$node1_rd read}
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# verify there are no blocked clients
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assert_equal [s 0 blocked_clients] {0}
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assert_equal [s -1 blocked_clients] {0}
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}
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resume_process $node3_pid
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$node1_rd close
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} ;# stop servers
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# Test redict-cli -- cluster create, add-node, call.
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# Test that functions are propagated on add-node
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start_multiple_servers 5 [list overrides $base_conf] {
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set node4_rd [redict_client -3]
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set node5_rd [redict_client -4]
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test {Functions are added to new node on redict-cli cluster add-node} {
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exec src/redict-cli --cluster-yes --cluster create \
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127.0.0.1:[srv 0 port] \
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127.0.0.1:[srv -1 port] \
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127.0.0.1:[srv -2 port]
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# upload a function to all the cluster
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exec src/redict-cli --cluster-yes --cluster call 127.0.0.1:[srv 0 port] \
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FUNCTION LOAD {#!lua name=TEST
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redict.register_function('test', function() return 'hello' end)
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}
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# adding node to the cluster
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exec src/redict-cli --cluster-yes --cluster add-node \
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127.0.0.1:[srv -3 port] \
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127.0.0.1:[srv 0 port]
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wait_for_cluster_size 4
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# make sure 'test' function was added to the new node
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assert_equal {{library_name TEST engine LUA functions {{name test description {} flags {}}}}} [$node4_rd FUNCTION LIST]
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# add function to node 5
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assert_equal {TEST} [$node5_rd FUNCTION LOAD {#!lua name=TEST
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redict.register_function('test', function() return 'hello' end)
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}]
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# make sure functions was added to node 5
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assert_equal {{library_name TEST engine LUA functions {{name test description {} flags {}}}}} [$node5_rd FUNCTION LIST]
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# adding node 5 to the cluster should failed because it already contains the 'test' function
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catch {
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exec src/redict-cli --cluster-yes --cluster add-node \
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127.0.0.1:[srv -4 port] \
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127.0.0.1:[srv 0 port]
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} e
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assert_match {*node already contains functions*} $e
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}
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} ;# stop servers
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# Test redict-cli --cluster create, add-node.
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# Test that one slot can be migrated to and then away from the new node.
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test {Migrate the last slot away from a node using redict-cli} {
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start_multiple_servers 4 [list overrides $base_conf] {
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# Create a cluster of 3 nodes
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exec src/redict-cli --cluster-yes --cluster create \
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127.0.0.1:[srv 0 port] \
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127.0.0.1:[srv -1 port] \
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127.0.0.1:[srv -2 port]
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Insert some data
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assert_equal OK [exec src/redict-cli -c -p [srv 0 port] SET foo bar]
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set slot [exec src/redict-cli -c -p [srv 0 port] CLUSTER KEYSLOT foo]
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# Add new node to the cluster
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exec src/redict-cli --cluster-yes --cluster add-node \
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127.0.0.1:[srv -3 port] \
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127.0.0.1:[srv 0 port]
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# First we wait for new node to be recognized by entire cluster
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wait_for_cluster_size 4
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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set newnode_r [redict_client -3]
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set newnode_id [$newnode_r CLUSTER MYID]
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# Find out which node has the key "foo" by asking the new node for a
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# redirect.
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catch { $newnode_r get foo } e
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assert_match "MOVED $slot *" $e
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lassign [split [lindex $e 2] :] owner_host owner_port
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set owner_r [redict $owner_host $owner_port 0 $::tls]
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set owner_id [$owner_r CLUSTER MYID]
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# Move slot to new node using plain Redict commands
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assert_equal OK [$newnode_r CLUSTER SETSLOT $slot IMPORTING $owner_id]
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assert_equal OK [$owner_r CLUSTER SETSLOT $slot MIGRATING $newnode_id]
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assert_equal {foo} [$owner_r CLUSTER GETKEYSINSLOT $slot 10]
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assert_equal OK [$owner_r MIGRATE 127.0.0.1 [srv -3 port] "" 0 5000 KEYS foo]
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assert_equal OK [$newnode_r CLUSTER SETSLOT $slot NODE $newnode_id]
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assert_equal OK [$owner_r CLUSTER SETSLOT $slot NODE $newnode_id]
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# Using --cluster check make sure we won't get `Not all slots are covered by nodes`.
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# Wait for the cluster to become stable make sure the cluster is up during MIGRATE.
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wait_for_condition 1000 50 {
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv 0 port]}] == 0 &&
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv -1 port]}] == 0 &&
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv -2 port]}] == 0 &&
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[catch {exec src/redict-cli --cluster check 127.0.0.1:[srv -3 port]}] == 0 &&
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Move the only slot back to original node using redict-cli
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exec src/redict-cli --cluster reshard 127.0.0.1:[srv -3 port] \
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--cluster-from $newnode_id \
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--cluster-to $owner_id \
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--cluster-slots 1 \
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--cluster-yes
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# The empty node will become a replica of the new owner before the
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# `MOVED` check, so let's wait for the cluster to become stable.
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Check that the key foo has been migrated back to the original owner.
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catch { $newnode_r get foo } e
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assert_equal "MOVED $slot $owner_host:$owner_port" $e
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# Check that the empty node has turned itself into a replica of the new
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# owner and that the new owner knows that.
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wait_for_condition 1000 50 {
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[string match "*slave*" [$owner_r CLUSTER REPLICAS $owner_id]]
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} else {
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fail "Empty node didn't turn itself into a replica."
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}
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}
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}
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foreach ip_or_localhost {127.0.0.1 localhost} {
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# Test redict-cli --cluster create, add-node with cluster-port.
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# Create five nodes, three with custom cluster_port and two with default values.
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start_server [list overrides [list cluster-enabled yes cluster-node-timeout 1 cluster-port [find_available_port $::baseport $::portcount]]] {
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start_server [list overrides [list cluster-enabled yes cluster-node-timeout 1]] {
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start_server [list overrides [list cluster-enabled yes cluster-node-timeout 1 cluster-port [find_available_port $::baseport $::portcount]]] {
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start_server [list overrides [list cluster-enabled yes cluster-node-timeout 1]] {
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start_server [list overrides [list cluster-enabled yes cluster-node-timeout 1 cluster-port [find_available_port $::baseport $::portcount]]] {
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# The first three are used to test --cluster create.
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# The last two are used to test --cluster add-node
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test "redict-cli -4 --cluster create using $ip_or_localhost with cluster-port" {
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exec src/redict-cli -4 --cluster-yes --cluster create \
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$ip_or_localhost:[srv 0 port] \
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$ip_or_localhost:[srv -1 port] \
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$ip_or_localhost:[srv -2 port]
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Make sure each node can meet other nodes
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assert_equal 3 [CI 0 cluster_known_nodes]
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assert_equal 3 [CI 1 cluster_known_nodes]
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assert_equal 3 [CI 2 cluster_known_nodes]
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}
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test "redict-cli -4 --cluster add-node using $ip_or_localhost with cluster-port" {
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# Adding node to the cluster (without cluster-port)
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exec src/redict-cli -4 --cluster-yes --cluster add-node \
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$ip_or_localhost:[srv -3 port] \
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$ip_or_localhost:[srv 0 port]
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wait_for_cluster_size 4
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Adding node to the cluster (with cluster-port)
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exec src/redict-cli -4 --cluster-yes --cluster add-node \
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$ip_or_localhost:[srv -4 port] \
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$ip_or_localhost:[srv 0 port]
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wait_for_cluster_size 5
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wait_for_condition 1000 50 {
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[CI 0 cluster_state] eq {ok} &&
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[CI 1 cluster_state] eq {ok} &&
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[CI 2 cluster_state] eq {ok} &&
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[CI 3 cluster_state] eq {ok} &&
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[CI 4 cluster_state] eq {ok}
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} else {
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fail "Cluster doesn't stabilize"
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}
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# Make sure each node can meet other nodes
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assert_equal 5 [CI 0 cluster_known_nodes]
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assert_equal 5 [CI 1 cluster_known_nodes]
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assert_equal 5 [CI 2 cluster_known_nodes]
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assert_equal 5 [CI 3 cluster_known_nodes]
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assert_equal 5 [CI 4 cluster_known_nodes]
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}
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# stop 5 servers
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}
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}
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}
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}
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}
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} ;# foreach ip_or_localhost
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} ;# tags
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set ::singledb $old_singledb
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