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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
# frozen_string_literal: true
require 'redis_client/cluster/concurrent_worker'
require 'redis_client/cluster/pipeline'
require 'redis_client/cluster/pub_sub'
require 'redis_client/cluster/router'
require 'redis_client/cluster/transaction'
require 'redis_client/cluster/optimistic_locking'
class RedisClient
class Cluster
ZERO_CURSOR_FOR_SCAN = '0'
private_constant :ZERO_CURSOR_FOR_SCAN
attr_reader :config
def initialize(config = nil, pool: nil, concurrency: nil, **kwargs)
@config = config.nil? ? ClusterConfig.new(**kwargs) : config
@concurrent_worker = ::RedisClient::Cluster::ConcurrentWorker.create(**(concurrency || {}))
@command_builder = @config.command_builder
@pool = pool
@kwargs = kwargs
@router = nil
@mutex = Mutex.new
end
def inspect
node_keys = @router.nil? ? @config.startup_nodes.keys : router.node_keys
"#<#{self.class.name} #{node_keys.join(', ')}>"
end
def call(*args, **kwargs, &block)
command = @command_builder.generate(args, kwargs)
router.send_command(:call_v, command, &block)
end
def call_v(command, &block)
command = @command_builder.generate(command)
router.send_command(:call_v, command, &block)
end
def call_once(*args, **kwargs, &block)
command = @command_builder.generate(args, kwargs)
router.send_command(:call_once_v, command, &block)
end
def call_once_v(command, &block)
command = @command_builder.generate(command)
router.send_command(:call_once_v, command, &block)
end
def blocking_call(timeout, *args, **kwargs, &block)
command = @command_builder.generate(args, kwargs)
router.send_command(:blocking_call_v, command, timeout, &block)
end
def blocking_call_v(timeout, command, &block)
command = @command_builder.generate(command)
router.send_command(:blocking_call_v, command, timeout, &block)
end
def scan(*args, **kwargs, &block)
return to_enum(__callee__, *args, **kwargs) unless block_given?
command = @command_builder.generate(['scan', ZERO_CURSOR_FOR_SCAN] + args, kwargs)
seed = Random.new_seed
loop do
cursor, keys = router.scan(command, seed: seed)
command[1] = cursor
keys.each(&block)
break if cursor == ZERO_CURSOR_FOR_SCAN
end
end
def sscan(key, *args, **kwargs, &block)
return to_enum(__callee__, key, *args, **kwargs) unless block_given?
command = @command_builder.generate(['sscan', key, ZERO_CURSOR_FOR_SCAN] + args, kwargs)
router.scan_single_key(command, arity: 1, &block)
end
def hscan(key, *args, **kwargs, &block)
return to_enum(__callee__, key, *args, **kwargs) unless block_given?
command = @command_builder.generate(['hscan', key, ZERO_CURSOR_FOR_SCAN] + args, kwargs)
router.scan_single_key(command, arity: 2, &block)
end
def zscan(key, *args, **kwargs, &block)
return to_enum(__callee__, key, *args, **kwargs) unless block_given?
command = @command_builder.generate(['zscan', key, ZERO_CURSOR_FOR_SCAN] + args, kwargs)
router.scan_single_key(command, arity: 2, &block)
end
def pipelined(exception: true)
seed = @config.use_replica? && @config.replica_affinity == :random ? nil : Random.new_seed
pipeline = ::RedisClient::Cluster::Pipeline.new(
router,
@command_builder,
@concurrent_worker,
exception: exception,
seed: seed
)
yield pipeline
return [] if pipeline.empty?
pipeline.execute
end
def multi(watch: nil)
if watch.nil? || watch.empty?
transaction = ::RedisClient::Cluster::Transaction.new(router, @command_builder)
yield transaction
return transaction.execute
end
::RedisClient::Cluster::OptimisticLocking.new(router).watch(watch) do |c, slot, asking|
transaction = ::RedisClient::Cluster::Transaction.new(
router, @command_builder, node: c, slot: slot, asking: asking
)
yield transaction
transaction.execute
end
end
def pubsub
::RedisClient::Cluster::PubSub.new(router, @command_builder)
end
def with(...)
raise NotImplementedError, 'No way to use'
end
def close
@router&.close
@concurrent_worker.close
nil
end
private
def router
return @router unless @router.nil?
@mutex.synchronize do
@router ||= ::RedisClient::Cluster::Router.new(@config, @concurrent_worker, pool: @pool, **@kwargs)
end
end
def method_missing(name, *args, **kwargs, &block)
cmd = name.respond_to?(:name) ? name.name : name.to_s
if router.command_exists?(cmd)
args.unshift(cmd)
command = @command_builder.generate(args, kwargs)
return router.send_command(:call_v, command, &block)
end
super
end
def respond_to_missing?(name, include_private = false)
return true if router.command_exists?(name)
super
end
end
end
|
