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|
# frozen_string_literal: true
require_relative 'helper'
class SentinelTest < Minitest::Test
include Helper::Sentinel
def test_sentinel_master_role_connection
actual = redis.role
assert_equal 'master', actual[0]
assert_equal SLAVE_PORT, actual[2][0][1]
end
def test_sentinel_slave_role_connection
redis = build_slave_role_client
actual = redis.role
assert_equal 'slave', actual[0]
assert_equal MASTER_PORT.to_i, actual[2]
end
def test_the_client_can_connect_to_available_slaves
commands = {
sentinel: lambda do |*_|
[
['ip', '127.0.0.1', 'port', '6382', 'flags', 'slave'],
['ip', '127.0.0.1', 'port', '6383', 'flags', 's_down,slave,disconnected']
]
end
}
RedisMock.start(commands) do |port|
redis = build_slave_role_client(sentinels: [{ host: '127.0.0.1', port: port }])
assert_equal 'PONG', redis.ping
end
end
def test_the_client_raises_error_when_there_is_no_available_slaves
commands = {
sentinel: lambda do |*_|
[
['ip', '127.0.0.1', 'port', '6382', 'flags', 's_down,slave,disconnected'],
['ip', '127.0.0.1', 'port', '6383', 'flags', 's_down,slave,disconnected']
]
end
}
RedisMock.start(commands) do |port|
redis = build_slave_role_client(sentinels: [{ host: '127.0.0.1', port: port }])
assert_raises(Redis::CannotConnectError) { redis.ping }
end
end
def test_sentinel_failover
sentinels = [{ host: "127.0.0.1", port: 26_381 },
{ host: "127.0.0.1", port: 26_382 }]
commands = {
s1: [],
s2: []
}
s1 = {
sentinel: lambda do |command, *args|
commands[:s1] << [command, *args]
"$-1" # Nil
end
}
s2 = {
sentinel: lambda do |command, *args|
commands[:s2] << [command, *args]
["127.0.0.1", "6381"]
end
}
RedisMock.start(s1) do |s1_port|
RedisMock.start(s2) do |s2_port|
sentinels[0][:port] = s1_port
sentinels[1][:port] = s2_port
redis = Redis.new(url: "redis://master1", sentinels: sentinels, role: :master)
assert redis.ping
end
end
assert_equal commands[:s1], [%w[get-master-addr-by-name master1]]
assert_equal commands[:s2], [%w[get-master-addr-by-name master1]]
end
def test_sentinel_failover_prioritize_healthy_sentinel
sentinels = [{ host: "127.0.0.1", port: 26_381 },
{ host: "127.0.0.1", port: 26_382 }]
commands = {
s1: [],
s2: []
}
s1 = {
sentinel: lambda do |command, *args|
commands[:s1] << [command, *args]
"$-1" # Nil
end
}
s2 = {
sentinel: lambda do |command, *args|
commands[:s2] << [command, *args]
["127.0.0.1", "6381"]
end
}
RedisMock.start(s1) do |s1_port|
RedisMock.start(s2) do |s2_port|
sentinels[0][:port] = s1_port
sentinels[1][:port] = s2_port
redis = Redis.new(url: "redis://master1", sentinels: sentinels, role: :master)
assert redis.ping
redis.quit
assert redis.ping
end
end
assert_equal commands[:s1], [%w[get-master-addr-by-name master1]]
assert_equal commands[:s2], [%w[get-master-addr-by-name master1], %w[get-master-addr-by-name master1]]
end
def test_sentinel_with_non_sentinel_options
commands = { s1: [], m1: [] }
sentinel = lambda do |port|
{
auth: lambda do |pass|
commands[:s1] << ['auth', pass]
'+OK'
end,
select: lambda do |db|
commands[:s1] << ['select', db]
"-ERR unknown command 'select'"
end,
sentinel: lambda do |command, *args|
commands[:s1] << [command, *args]
['127.0.0.1', port.to_s]
end
}
end
master = {
auth: lambda do |pass|
commands[:m1] << ['auth', pass]
'+OK'
end,
role: lambda do
commands[:m1] << ['role']
['master']
end
}
RedisMock.start(master) do |master_port|
RedisMock.start(sentinel.call(master_port)) do |sen_port|
s = [{ host: '127.0.0.1', port: sen_port }]
redis = Redis.new(url: 'redis://:foo@master1/15', sentinels: s, role: :master)
assert redis.ping
end
end
assert_equal [%w[get-master-addr-by-name master1]], commands[:s1]
assert_equal [%w[auth foo], %w[role]], commands[:m1]
end
def test_authentication_for_sentinel
commands = { s1: [], m1: [] }
sentinel = lambda do |port|
{
auth: lambda do |pass|
commands[:s1] << ['auth', pass]
'+OK'
end,
select: lambda do |db|
commands[:s1] << ['select', db]
'-ERR unknown command `select`'
end,
sentinel: lambda do |command, *args|
commands[:s1] << [command, *args]
['127.0.0.1', port.to_s]
end
}
end
master = {
auth: lambda do |pass|
commands[:m1] << ['auth', pass]
'-ERR Client sent AUTH, but no password is set'
end,
role: lambda do
commands[:m1] << ['role']
['master']
end
}
RedisMock.start(master) do |master_port|
RedisMock.start(sentinel.call(master_port)) do |sen_port|
s = [{ host: '127.0.0.1', port: sen_port, password: 'foo' }]
r = Redis.new(host: 'master1', sentinels: s, role: :master)
assert r.ping
end
end
assert_equal [%w[auth foo], %w[get-master-addr-by-name master1]], commands[:s1]
assert_equal [%w[role]], commands[:m1]
end
def test_authentication_for_sentinel_and_redis
commands = { s1: [], m1: [] }
sentinel = lambda do |port|
{
auth: lambda do |pass|
commands[:s1] << ['auth', pass]
'+OK'
end,
select: lambda do |db|
commands[:s1] << ['select', db]
'-ERR unknown command `select`'
end,
sentinel: lambda do |command, *args|
commands[:s1] << [command, *args]
['127.0.0.1', port.to_s]
end
}
end
master = {
auth: lambda do |pass|
commands[:m1] << ['auth', pass]
'+OK'
end,
role: lambda do
commands[:m1] << ['role']
['master']
end
}
RedisMock.start(master) do |master_port|
RedisMock.start(sentinel.call(master_port)) do |sen_port|
s = [{ host: '127.0.0.1', port: sen_port, password: 'foo' }]
r = Redis.new(host: 'master1', sentinels: s, role: :master, password: 'bar')
assert r.ping
end
end
assert_equal [%w[auth foo], %w[get-master-addr-by-name master1]], commands[:s1]
assert_equal [%w[auth bar], %w[role]], commands[:m1]
end
def test_sentinel_role_mismatch
sentinels = [{ host: "127.0.0.1", port: 26_381 }]
sentinel = lambda do |port|
{
sentinel: lambda do |_command, *_args|
["127.0.0.1", port.to_s]
end
}
end
master = {
role: lambda do
["slave"]
end
}
ex = assert_raises(Redis::ConnectionError) do
RedisMock.start(master) do |master_port|
RedisMock.start(sentinel.call(master_port)) do |sen_port|
sentinels[0][:port] = sen_port
redis = Redis.new(url: "redis://master1", sentinels: sentinels, role: :master)
assert redis.ping
end
end
end
assert_match(/Instance role mismatch/, ex.message)
end
def test_sentinel_retries
sentinels = [{ host: "127.0.0.1", port: 26_381 },
{ host: "127.0.0.1", port: 26_382 }]
connections = []
handler = lambda do |id, port|
{
sentinel: lambda do |_command, *_args|
connections << id
if connections.count(id) < 2
:close
else
["127.0.0.1", port.to_s]
end
end
}
end
master = {
role: lambda do
["master"]
end
}
RedisMock.start(master) do |master_port|
RedisMock.start(handler.call(:s1, master_port)) do |s1_port|
RedisMock.start(handler.call(:s2, master_port)) do |s2_port|
sentinels[0][:port] = s1_port
sentinels[1][:port] = s2_port
redis = Redis.new(url: "redis://master1", sentinels: sentinels, role: :master, reconnect_attempts: 1)
assert redis.ping
end
end
end
assert_equal %i[s1 s2 s1], connections
connections.clear
ex = assert_raises(Redis::CannotConnectError) do
RedisMock.start(master) do |master_port|
RedisMock.start(handler.call(:s1, master_port)) do |s1_port|
RedisMock.start(handler.call(:s2, master_port)) do |s2_port|
sentinels[0][:port] = s1_port + 1
sentinels[1][:port] = s2_port + 2
redis = Redis.new(url: "redis://master1", sentinels: sentinels, role: :master, reconnect_attempts: 0)
assert redis.ping
end
end
end
end
assert_match(/No sentinels available/, ex.message)
end
def test_sentinel_with_string_option_keys
commands = []
master = {
role: lambda do
['master']
end
}
sentinel = lambda do |port|
{
sentinel: lambda do |command, *args|
commands << [command, *args]
['127.0.0.1', port.to_s]
end
}
end
RedisMock.start(master) do |master_port|
RedisMock.start(sentinel.call(master_port)) do |sen_port|
sentinels = [{ 'host' => '127.0.0.1', 'port' => sen_port }]
redis = Redis.new(url: 'redis://master1', 'sentinels' => sentinels, 'role' => :master)
assert redis.ping
end
end
assert_equal [%w[get-master-addr-by-name master1]], commands
end
end
|
