Class: Redis::Connection::Memory

Inherits:
Object
  • Object
show all
Includes:
BitopCommand, CommandExecutor, FakeRedis, GeoCommands, CommandHelper, SortMethod, TransactionCommands
Defined in:
lib/redis/connection/memory.rb

Constant Summary

Constants included from FakeRedis

FakeRedis::Redis, FakeRedis::TRANSACTION_COMMANDS, FakeRedis::VERSION

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FakeRedis

disable, disabling, enable, enabled?, enabling

Constructor Details

#initialize(options = {}) ⇒ Memory

Returns a new instance of Memory.


57
58
59
# File 'lib/redis/connection/memory.rb', line 57

def initialize(options = {})
  self.options = self.options ? self.options.merge(options) : options
end

Instance Attribute Details

#database_idObject


61
62
63
# File 'lib/redis/connection/memory.rb', line 61

def database_id
  @database_id ||= 0
end

#optionsObject

Returns the value of attribute options


28
29
30
# File 'lib/redis/connection/memory.rb', line 28

def options
  @options
end

#repliesObject


83
84
85
# File 'lib/redis/connection/memory.rb', line 83

def replies
  @replies ||= []
end

Class Method Details

.channelsObject


45
46
47
# File 'lib/redis/connection/memory.rb', line 45

def self.channels
  @channels ||= Hash.new {|h,k| h[k] = [] }
end

.connect(options = {}) ⇒ Object


53
54
55
# File 'lib/redis/connection/memory.rb', line 53

def self.connect(options = {})
  new(options)
end

.databasesObject

Tracks all databases for all instances across the current process. We have to be able to handle two clients with the same host/port accessing different databases at once without overwriting each other. So we store our “data” outside the client instances, in this class level instance method. Client instances access it with a key made up of their host/port, and then select which DB out of the array of them they want. Allows the access we need.


36
37
38
# File 'lib/redis/connection/memory.rb', line 36

def self.databases
  @databases ||= Hash.new {|h,k| h[k] = [] }
end

.reset_all_channelsObject


49
50
51
# File 'lib/redis/connection/memory.rb', line 49

def self.reset_all_channels
  @channels = nil
end

.reset_all_databasesObject

Used for resetting everything in specs


41
42
43
# File 'lib/redis/connection/memory.rb', line 41

def self.reset_all_databases
  @databases = nil
end

Instance Method Details

#append(key, value) ⇒ Object


249
250
251
252
# File 'lib/redis/connection/memory.rb', line 249

def append(key, value)
  data[key] = (data[key] || "")
  data[key] = data[key] + value.to_s
end

#auth(password) ⇒ Object


124
125
126
# File 'lib/redis/connection/memory.rb', line 124

def auth(password)
  "OK"
end

#bgrewriteaofObject


155
# File 'lib/redis/connection/memory.rb', line 155

def bgrewriteaof; end

#bgsaveObject


153
# File 'lib/redis/connection/memory.rb', line 153

def bgsave; end

#bitcount(key, start_index = 0, end_index = -1)) ⇒ Object


219
220
221
222
# File 'lib/redis/connection/memory.rb', line 219

def bitcount(key, start_index = 0, end_index = -1)
  return 0 unless data[key]
  data[key][start_index..end_index].unpack('B*')[0].count("1")
end

#bitpos(key, bit, start_index = 0, end_index = -1)) ⇒ Object


224
225
226
227
# File 'lib/redis/connection/memory.rb', line 224

def bitpos(key, bit, start_index = 0, end_index = -1)
  value = data[key] || ""
  value[0..end_index].unpack('B*')[0].index(bit.to_s, start_index * 8) || -1
end

#blpop(keys, timeout = 0) ⇒ Object


519
520
521
522
523
524
525
526
527
528
529
# File 'lib/redis/connection/memory.rb', line 519

def blpop(keys, timeout=0)
  #todo threaded mode
  keys = Array(keys)
  keys.each do |key|
    if data[key] && data[key].size > 0
      return [key, data[key].shift]
    end
  end
  sleep(timeout.to_f)
  nil
end

#brpop(keys, timeout = 0) ⇒ Object


487
488
489
490
491
492
493
494
495
496
497
# File 'lib/redis/connection/memory.rb', line 487

def brpop(keys, timeout=0)
  #todo threaded mode
  keys = Array(keys)
  keys.each do |key|
    if data[key] && data[key].size > 0
      return [key, data[key].pop]
    end
  end
  sleep(timeout.to_f)
  nil
end

#brpoplpush(key1, key2, opts = {}) ⇒ Object


506
507
508
509
510
511
# File 'lib/redis/connection/memory.rb', line 506

def brpoplpush(key1, key2, opts={})
  data_type_check(key1, Array)
  _key, elem = brpop(key1)
  lpush(key2, elem) unless elem.nil?
  elem
end

#bzpopmax(*args) ⇒ Object


1119
1120
1121
# File 'lib/redis/connection/memory.rb', line 1119

def bzpopmax(*args)
  bzpop(:bzpopmax, args)
end

#bzpopmin(*args) ⇒ Object


1123
1124
1125
# File 'lib/redis/connection/memory.rb', line 1123

def bzpopmin(*args)
  bzpop(:bzpopmin, args)
end

#client(command, _options = {}) ⇒ Object


98
99
100
101
102
103
104
105
# File 'lib/redis/connection/memory.rb', line 98

def client(command, _options = {})
  case command
  when :setname then "OK"
  when :getname then nil
  else
    raise Redis::CommandError, "ERR unknown command '#{command}'"
  end
end

#connect_unix(path, timeout) ⇒ Object


92
93
# File 'lib/redis/connection/memory.rb', line 92

def connect_unix(path, timeout)
end

#connected?Boolean

Returns:

  • (Boolean)

88
89
90
# File 'lib/redis/connection/memory.rb', line 88

def connected?
  true
end

#dataObject


79
80
81
# File 'lib/redis/connection/memory.rb', line 79

def data
  find_database
end

#database_instance_keyObject


67
68
69
# File 'lib/redis/connection/memory.rb', line 67

def database_instance_key
  [options[:host], options[:port]].hash
end

#databasesObject


71
72
73
# File 'lib/redis/connection/memory.rb', line 71

def databases
  self.class.databases[database_instance_key]
end

#dbsizeObject


357
358
359
# File 'lib/redis/connection/memory.rb', line 357

def dbsize
  data.keys.count
end

#decr(key) ⇒ Object


959
960
961
962
# File 'lib/redis/connection/memory.rb', line 959

def decr(key)
  data.merge!({ key => (data[key].to_i - 1).to_s || "-1"})
  data[key].to_i
end

#decrby(key, by) ⇒ Object


964
965
966
967
# File 'lib/redis/connection/memory.rb', line 964

def decrby(key, by)
  data.merge!({ key => ((data[key].to_i - by.to_i) || (by.to_i * -1)).to_s })
  data[key].to_i
end

#del(*keys) ⇒ Object


696
697
698
# File 'lib/redis/connection/memory.rb', line 696

def del(*keys)
  delete_keys(keys, 'del')
end

#disconnectObject


95
96
# File 'lib/redis/connection/memory.rb', line 95

def disconnect
end

#dump(key) ⇒ Object


170
171
172
173
174
175
176
177
178
179
# File 'lib/redis/connection/memory.rb', line 170

def dump(key)
  return nil unless exists(key)

  value = data[key]

  Marshal.dump(
    value: value,
    version: FakeRedis::VERSION, # Redis includes the version, so we might as well
  )
end

#echo(string) ⇒ Object


340
341
342
# File 'lib/redis/connection/memory.rb', line 340

def echo(string)
  string
end

#evalObject


159
# File 'lib/redis/connection/memory.rb', line 159

def eval; end

#evalshaObject


157
# File 'lib/redis/connection/memory.rb', line 157

def evalsha; end

#exists(key) ⇒ Object


361
362
363
# File 'lib/redis/connection/memory.rb', line 361

def exists(key)
  data.key?(key)
end

#expire(key, ttl) ⇒ Object


729
730
731
732
733
# File 'lib/redis/connection/memory.rb', line 729

def expire(key, ttl)
  return 0 unless data[key]
  data.expires[key] = Time.now + ttl
  1
end

#expireat(key, timestamp) ⇒ Object


757
758
759
760
# File 'lib/redis/connection/memory.rb', line 757

def expireat(key, timestamp)
  data.expires[key] = Time.at(timestamp)
  true
end

#find_database(id = database_id) ⇒ Object


75
76
77
# File 'lib/redis/connection/memory.rb', line 75

def find_database id=database_id
  databases[id] ||= ExpiringHash.new
end

#flushallObject


119
120
121
122
# File 'lib/redis/connection/memory.rb', line 119

def flushall
  self.class.databases[database_instance_key] = []
  "OK"
end

#flushdbObject


114
115
116
117
# File 'lib/redis/connection/memory.rb', line 114

def flushdb
  databases.delete_at(database_id)
  "OK"
end

#get(key) ⇒ Object


209
210
211
212
# File 'lib/redis/connection/memory.rb', line 209

def get(key)
  data_type_check(key, String)
  data[key]
end

#getbit(key, offset) ⇒ Object


214
215
216
217
# File 'lib/redis/connection/memory.rb', line 214

def getbit(key, offset)
  return unless data[key]
  data[key].unpack('B*')[0].split("")[offset].to_i
end

#getrange(key, start, ending) ⇒ Object Also known as: substr


229
230
231
232
# File 'lib/redis/connection/memory.rb', line 229

def getrange(key, start, ending)
  return unless data[key]
  data[key][start..ending]
end

#getset(key, value) ⇒ Object


235
236
237
238
239
240
# File 'lib/redis/connection/memory.rb', line 235

def getset(key, value)
  data_type_check(key, String)
  data[key].tap do
    set(key, value)
  end
end

#hdel(key, field) ⇒ Object


269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
# File 'lib/redis/connection/memory.rb', line 269

def hdel(key, field)
  data_type_check(key, Hash)
  return 0 unless data[key]

  if field.is_a?(Array)
    old_keys_count = data[key].size
    fields = field.map(&:to_s)

    data[key].delete_if { |k, v| fields.include? k }
    deleted = old_keys_count - data[key].size
  else
    field = field.to_s
    deleted = data[key].delete(field) ? 1 : 0
  end

  remove_key_for_empty_collection(key)
  deleted
end

#hexists(key, field) ⇒ Object


865
866
867
868
869
# File 'lib/redis/connection/memory.rb', line 865

def hexists(key, field)
  data_type_check(key, Hash)
  return false unless data[key]
  data[key].key?(field.to_s)
end

#hget(key, field) ⇒ Object


264
265
266
267
# File 'lib/redis/connection/memory.rb', line 264

def hget(key, field)
  data_type_check(key, Hash)
  data[key] && data[key][field.to_s]
end

#hgetall(key) ⇒ Object


259
260
261
262
# File 'lib/redis/connection/memory.rb', line 259

def hgetall(key)
  data_type_check(key, Hash)
  data[key].to_a.flatten || {}
end

#hincrby(key, field, increment) ⇒ Object


843
844
845
846
847
848
849
850
851
852
# File 'lib/redis/connection/memory.rb', line 843

def hincrby(key, field, increment)
  data_type_check(key, Hash)
  field = field.to_s
  if data[key]
    data[key][field] = (data[key][field].to_i + increment.to_i).to_s
  else
    data[key] = { field => increment.to_s }
  end
  data[key][field].to_i
end

#hincrbyfloat(key, field, increment) ⇒ Object


854
855
856
857
858
859
860
861
862
863
# File 'lib/redis/connection/memory.rb', line 854

def hincrbyfloat(key, field, increment)
  data_type_check(key, Hash)
  field = field.to_s
  if data[key]
    data[key][field] = (data[key][field].to_f + increment.to_f).to_s
  else
    data[key] = { field => increment.to_s }
  end
  data[key][field]
end

#hkeys(key) ⇒ Object


288
289
290
291
292
# File 'lib/redis/connection/memory.rb', line 288

def hkeys(key)
  data_type_check(key, Hash)
  return [] if data[key].nil?
  data[key].keys
end

#hlen(key) ⇒ Object


825
826
827
828
829
# File 'lib/redis/connection/memory.rb', line 825

def hlen(key)
  data_type_check(key, Hash)
  return 0 unless data[key]
  data[key].size
end

#hmget(key, *fields) ⇒ Object


811
812
813
814
815
816
817
818
819
820
821
822
823
# File 'lib/redis/connection/memory.rb', line 811

def hmget(key, *fields)
  raise_argument_error('hmget')  if fields.empty? || fields.flatten.empty?

  data_type_check(key, Hash)
  fields.flatten.map do |field|
    field = field.to_s
    if data[key]
      data[key][field]
    else
      nil
    end
  end
end

#hmset(key, *fields) ⇒ Object


786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
# File 'lib/redis/connection/memory.rb', line 786

def hmset(key, *fields)
  # mapped_hmset gives us [[:k1, "v1", :k2, "v2"]] for `fields`. Fix that.
  fields = fields[0] if mapped_param?(fields)
  raise_argument_error('hmset') if fields.empty?

  is_list_of_arrays = fields.all?{|field| field.instance_of?(Array)}

  raise_argument_error('hmset') if fields.size.odd? and !is_list_of_arrays
  raise_argument_error('hmset') if is_list_of_arrays and !fields.all?{|field| field.length == 2}

  data_type_check(key, Hash)
  data[key] ||= {}

  if is_list_of_arrays
    fields.each do |pair|
      data[key][pair[0].to_s] = pair[1].to_s
    end
  else
    fields.each_slice(2) do |field|
      data[key][field[0].to_s] = field[1].to_s
    end
  end
  "OK"
end

#hscan(key, start_cursor, *args) ⇒ Object


294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
# File 'lib/redis/connection/memory.rb', line 294

def hscan(key, start_cursor, *args)
  data_type_check(key, Hash)
  return ["0", []] unless data[key]

  match = "*"
  count = 10

  if args.size.odd?
    raise_argument_error('hscan')
  end

  if idx = args.index("MATCH")
    match = args[idx + 1]
  end

  if idx = args.index("COUNT")
    count = args[idx + 1]
  end

  start_cursor = start_cursor.to_i

  cursor = start_cursor
  next_keys = []

  if start_cursor + count >= data[key].length
    next_keys = (data[key].to_a)[start_cursor..-1]
    cursor = 0
  else
    cursor = start_cursor + count
    next_keys = (data[key].to_a)[start_cursor..cursor-1]
  end

  filtered_next_keys = next_keys.select{|k,v| File.fnmatch(match, k)}
  result = filtered_next_keys.flatten.map(&:to_s)

  return ["#{cursor}", result]
end

#hset(key, field, value) ⇒ Object


766
767
768
769
770
771
772
773
774
775
776
777
# File 'lib/redis/connection/memory.rb', line 766

def hset(key, field, value)
  data_type_check(key, Hash)
  field = field.to_s
  if data[key]
    result = !data[key].include?(field)
    data[key][field] = value.to_s
    result ? 1 : 0
  else
    data[key] = { field => value.to_s }
    1
  end
end

#hsetnx(key, field, value) ⇒ Object


779
780
781
782
783
784
# File 'lib/redis/connection/memory.rb', line 779

def hsetnx(key, field, value)
  data_type_check(key, Hash)
  field = field.to_s
  return false if data[key] && data[key][field]
  hset(key, field, value)
end

#hstrlen(key, field) ⇒ Object


831
832
833
834
835
# File 'lib/redis/connection/memory.rb', line 831

def hstrlen(key, field)
  data_type_check(key, Hash)
  return 0 if data[key].nil? || data[key][field].nil?
  data[key][field].size
end

#hvals(key) ⇒ Object


837
838
839
840
841
# File 'lib/redis/connection/memory.rb', line 837

def hvals(key)
  data_type_check(key, Hash)
  return [] unless data[key]
  data[key].values
end

#incr(key) ⇒ Object


944
945
946
947
# File 'lib/redis/connection/memory.rb', line 944

def incr(key)
  data.merge!({ key => (data[key].to_i + 1).to_s || "1"})
  data[key].to_i
end

#incrby(key, by) ⇒ Object


949
950
951
952
# File 'lib/redis/connection/memory.rb', line 949

def incrby(key, by)
  data.merge!({ key => (data[key].to_i + by.to_i).to_s || by })
  data[key].to_i
end

#incrbyfloat(key, by) ⇒ Object


954
955
956
957
# File 'lib/redis/connection/memory.rb', line 954

def incrbyfloat(key, by)
  data.merge!({ key => (data[key].to_f + by.to_f).to_s || by })
  data[key]
end

#infoObject


134
135
136
137
138
139
140
141
142
143
144
145
146
147
# File 'lib/redis/connection/memory.rb', line 134

def info
  {
    "redis_version" => options[:version] || DEFAULT_REDIS_VERSION,
    "connected_clients" => "1",
    "connected_slaves" => "0",
    "used_memory" => "3187",
    "changes_since_last_save" => "0",
    "last_save_time" => "1237655729",
    "total_connections_received" => "1",
    "total_commands_processed" => "1",
    "uptime_in_seconds" => "36000",
    "uptime_in_days" => 0
  }
end

#keys(pattern = "*") ⇒ Object


332
333
334
# File 'lib/redis/connection/memory.rb', line 332

def keys(pattern = "*")
  data.keys.select { |key| File.fnmatch(pattern, key) }
end

#lastsaveObject


348
349
350
# File 'lib/redis/connection/memory.rb', line 348

def lastsave
  Time.now.to_i
end

#lindex(key, index) ⇒ Object


400
401
402
403
# File 'lib/redis/connection/memory.rb', line 400

def lindex(key, index)
  data_type_check(key, Array)
  data[key] && data[key][index]
end

#linsert(key, where, pivot, value) ⇒ Object


405
406
407
408
409
410
411
412
413
414
415
416
417
418
# File 'lib/redis/connection/memory.rb', line 405

def linsert(key, where, pivot, value)
  data_type_check(key, Array)
  return unless data[key]

  value = value.to_s
  index = data[key].index(pivot.to_s)
  return -1 if index.nil?

  case where.to_s
    when /\Abefore\z/i then data[key].insert(index, value)
    when /\Aafter\z/i  then data[key].insert(index + 1, value)
    else raise_syntax_error
  end
end

#llen(key) ⇒ Object


365
366
367
368
369
# File 'lib/redis/connection/memory.rb', line 365

def llen(key)
  data_type_check(key, Array)
  return 0 unless data[key]
  data[key].size
end

#lpop(key) ⇒ Object


513
514
515
516
517
# File 'lib/redis/connection/memory.rb', line 513

def lpop(key)
  data_type_check(key, Array)
  return unless data[key]
  data[key].shift
end

#lpush(key, value) ⇒ Object


464
465
466
467
468
469
470
471
472
# File 'lib/redis/connection/memory.rb', line 464

def lpush(key, value)
  raise_argument_error('lpush') if value.respond_to?(:each) && value.empty?
  data_type_check(key, Array)
  data[key] ||= []
  [value].flatten.each do |val|
    data[key].unshift(val.to_s)
  end
  data[key].size
end

#lpushx(key, value) ⇒ Object


474
475
476
477
478
479
# File 'lib/redis/connection/memory.rb', line 474

def lpushx(key, value)
  raise_argument_error('lpushx') if value.respond_to?(:each) && value.empty?
  data_type_check(key, Array)
  return unless data[key]
  lpush(key, value)
end

#lrange(key, startidx, endidx) ⇒ Object


371
372
373
374
375
376
377
378
379
380
381
# File 'lib/redis/connection/memory.rb', line 371

def lrange(key, startidx, endidx)
  data_type_check(key, Array)
  if data[key]
    # In Ruby when negative start index is out of range Array#slice returns
    # nil which is not the case for lrange in Redis.
    startidx = 0 if startidx < 0 && startidx.abs > data[key].size
    data[key][startidx..endidx] || []
  else
    []
  end
end

#lrem(key, count, value) ⇒ Object


427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
# File 'lib/redis/connection/memory.rb', line 427

def lrem(key, count, value)
  data_type_check(key, Array)
  return 0 unless data[key]

  value = value.to_s
  old_size = data[key].size
  diff =
    if count == 0
      data[key].delete(value)
      old_size - data[key].size
    else
      array = count > 0 ? data[key].dup : data[key].reverse
      count.abs.times{ array.delete_at(array.index(value) || array.length) }
      data[key] = count > 0 ? array.dup : array.reverse
      old_size - data[key].size
    end
  remove_key_for_empty_collection(key)
  diff
end

#lset(key, index, value) ⇒ Object

Raises:

  • (Redis::CommandError)

420
421
422
423
424
425
# File 'lib/redis/connection/memory.rb', line 420

def lset(key, index, value)
  data_type_check(key, Array)
  return unless data[key]
  raise Redis::CommandError, "ERR index out of range" if index >= data[key].size
  data[key][index] = value.to_s
end

#ltrim(key, start, stop) ⇒ Object


383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
# File 'lib/redis/connection/memory.rb', line 383

def ltrim(key, start, stop)
  data_type_check(key, Array)
  return unless data[key]

  # Example: we have a list of 3 elements and
  # we give it a ltrim list, -5, -1. This means
  # it should trim to a max of 5. Since 3 < 5
  # we should not touch the list. This is consistent
  # with behavior of real Redis's ltrim with a negative
  # start argument.
  unless start < 0 && data[key].count < start.abs
    data[key] = data[key][start..stop]
  end

  "OK"
end

#mget(*keys) ⇒ Object


242
243
244
245
246
247
# File 'lib/redis/connection/memory.rb', line 242

def mget(*keys)
  raise_argument_error('mget') if keys.empty?
  # We work with either an array, or list of arguments
  keys = keys.first if keys.size == 1
  data.values_at(*keys)
end

#monitorObject


149
# File 'lib/redis/connection/memory.rb', line 149

def monitor; end

#move(key, destination_id) ⇒ Object

Raises:

  • (Redis::CommandError)

161
162
163
164
165
166
167
168
# File 'lib/redis/connection/memory.rb', line 161

def move key, destination_id
  raise Redis::CommandError, "ERR source and destination objects are the same" if destination_id == database_id
  destination = find_database(destination_id)
  return false unless data.has_key?(key)
  return false if destination.has_key?(key)
  destination[key] = data.delete(key)
  true
end

#mset(*pairs) ⇒ Object


921
922
923
924
925
926
927
928
929
930
931
932
# File 'lib/redis/connection/memory.rb', line 921

def mset(*pairs)
  # Handle pairs for mapped_mset command
  pairs = pairs[0] if mapped_param?(pairs)
  raise_argument_error('mset') if pairs.empty? || pairs.size == 1
  # We have to reply with a different error message here to be consistent with redis-rb 3.0.6 / redis-server 2.8.1
  raise_argument_error("mset", "mset_odd") if pairs.size.odd?

  pairs.each_slice(2) do |pair|
    data[pair[0].to_s] = pair[1].to_s
  end
  "OK"
end

#msetnx(*pairs) ⇒ Object


934
935
936
937
938
939
940
941
942
# File 'lib/redis/connection/memory.rb', line 934

def msetnx(*pairs)
  # Handle pairs for mapped_msetnx command
  pairs = pairs[0] if mapped_param?(pairs)
  keys = []
  pairs.each_with_index{|item, index| keys << item.to_s if index % 2 == 0}
  return false if keys.any?{|key| data.key?(key) }
  mset(*pairs)
  true
end

#persist(key) ⇒ Object


762
763
764
# File 'lib/redis/connection/memory.rb', line 762

def persist(key)
  !!data.expires.delete(key)
end

#pexpire(key, ttl) ⇒ Object


735
736
737
738
739
# File 'lib/redis/connection/memory.rb', line 735

def pexpire(key, ttl)
  return 0 unless data[key]
  data.expires[key] = Time.now + (ttl / 1000.0)
  1
end

#pfadd(key, member) ⇒ Object


1302
1303
1304
1305
1306
1307
1308
# File 'lib/redis/connection/memory.rb', line 1302

def pfadd(key, member)
  data_type_check(key, Set)
  data[key] ||= Set.new
  previous_size = data[key].size
  data[key] |= Array(member)
  data[key].size != previous_size
end

#pfcount(*keys) ⇒ Object


1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
# File 'lib/redis/connection/memory.rb', line 1310

def pfcount(*keys)
  keys = keys.flatten
  raise_argument_error("pfcount") if keys.empty?
  keys.each { |key| data_type_check(key, Set) }
  if keys.count == 1
    (data[keys.first] || Set.new).size
  else
    union = keys.map { |key| data[key] }.compact.reduce(&:|)
    union.size
  end
end

#pfmerge(destination, *sources) ⇒ Object


1322
1323
1324
1325
1326
1327
# File 'lib/redis/connection/memory.rb', line 1322

def pfmerge(destination, *sources)
  sources.each { |source| data_type_check(source, Set) }
  union = sources.map { |source| data[source] || Set.new }.reduce(&:|)
  data[destination] = union
  "OK"
end

#pingObject


344
345
346
# File 'lib/redis/connection/memory.rb', line 344

def ping
  "PONG"
end

#psetex(key, milliseconds, value) ⇒ Object


911
912
913
# File 'lib/redis/connection/memory.rb', line 911

def psetex(key, milliseconds, value)
  setex(key, milliseconds / 1000.0, value)
end

#psubscribe(*patterns) ⇒ Object


1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
# File 'lib/redis/connection/memory.rb', line 1351

def psubscribe(*patterns)
  raise_argument_error('psubscribe') if patterns.empty?()

  #Create messages for all data from the channels
  channel_replies = self.class.channels.keys.map do |channel|
    pattern = patterns.find{|p| File.fnmatch(p, channel) }
    unless pattern.nil?()
      self.class.channels[channel].slice!(0..-1).map!{|v| ["pmessage", pattern, channel, v]}
    end
  end
  channel_replies.flatten!(1)
  channel_replies.compact!()

  #Put messages into the replies for the future
  patterns.each_with_index do |pattern,index|
    replies << ["psubscribe", pattern, index+1]
  end
  replies.push(*channel_replies)

  #Add unsubscribe to stop blocking
  replies.push(self.punsubscribe())

  replies.pop() #Last reply will be pushed back on
end

#pttl(key) ⇒ Object


749
750
751
752
753
754
755
# File 'lib/redis/connection/memory.rb', line 749

def pttl(key)
  if data.expires.include?(key) && (ttl = data.expires[key].to_f - Time.now.to_f) > 0
    ttl * 1000
  else
    exists(key) ? -1 : -2
  end
end

#publish(channel, message) ⇒ Object


1376
1377
1378
1379
# File 'lib/redis/connection/memory.rb', line 1376

def publish(channel, message)
  self.class.channels[channel] << message
  0 #Just fake number of subscribers
end

#punsubscribe(*patterns) ⇒ Object


1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
# File 'lib/redis/connection/memory.rb', line 1392

def punsubscribe(*patterns)
  if patterns.empty?()
    replies << ["punsubscribe", nil, 0]
  else
    patterns.each do |pattern|
      replies << ["punsubscribe", pattern, 0]
    end
  end
  replies.pop() #Last reply will be pushed back on
end

#quitObject


980
# File 'lib/redis/connection/memory.rb', line 980

def quit ; end

#randomkeyObject


336
337
338
# File 'lib/redis/connection/memory.rb', line 336

def randomkey
  data.keys[rand(dbsize)]
end

#readObject


110
111
112
# File 'lib/redis/connection/memory.rb', line 110

def read
  replies.shift
end

#rename(key, new_key) ⇒ Object


713
714
715
716
717
718
# File 'lib/redis/connection/memory.rb', line 713

def rename(key, new_key)
  return unless data[key]
  data[new_key] = data[key]
  data.expires[new_key] = data.expires[key] if data.expires.include?(key)
  data.delete(key)
end

#renamenx(key, new_key) ⇒ Object


720
721
722
723
724
725
726
727
# File 'lib/redis/connection/memory.rb', line 720

def renamenx(key, new_key)
  if exists(new_key)
    false
  else
    rename(key, new_key)
    true
  end
end

#restore(key, ttl, serialized_value) ⇒ Object

Raises:

  • (Redis::CommandError)

181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
# File 'lib/redis/connection/memory.rb', line 181

def restore(key, ttl, serialized_value)
  raise Redis::CommandError, "ERR Target key name is busy." if exists(key)

  raise Redis::CommandError, "ERR DUMP payload version or checksum are wrong" if serialized_value.nil?

  parsed_value = begin
    Marshal.load(serialized_value)
  rescue TypeError
    raise Redis::CommandError, "ERR DUMP payload version or checksum are wrong"
  end

  if parsed_value[:version] != FakeRedis::VERSION
    raise Redis::CommandError, "ERR DUMP payload version or checksum are wrong"
  end

  # We could figure out what type the key was and set it with the public API here,
  # or we could just assign the value. If we presume the serialized_value is only ever
  # a return value from `dump` then we've only been given something that was in
  # the internal data structure anyway.
  data[key] = parsed_value[:value]

  # Set a TTL if one has been passed
  ttl = ttl.to_i # Makes nil into 0
  expire(key, ttl / 1000) unless ttl.zero?

  "OK"
end

#rpop(key) ⇒ Object


481
482
483
484
485
# File 'lib/redis/connection/memory.rb', line 481

def rpop(key)
  data_type_check(key, Array)
  return unless data[key]
  data[key].pop
end

#rpoplpush(key1, key2) ⇒ Object


499
500
501
502
503
504
# File 'lib/redis/connection/memory.rb', line 499

def rpoplpush(key1, key2)
  data_type_check(key1, Array)
  rpop(key1).tap do |elem|
    lpush(key2, elem) unless elem.nil?
  end
end

#rpush(key, value) ⇒ Object


447
448
449
450
451
452
453
454
455
# File 'lib/redis/connection/memory.rb', line 447

def rpush(key, value)
  raise_argument_error('rpush') if value.respond_to?(:each) && value.empty?
  data_type_check(key, Array)
  data[key] ||= []
  [value].flatten.each do |val|
    data[key].push(val.to_s)
  end
  data[key].size
end

#rpushx(key, value) ⇒ Object


457
458
459
460
461
462
# File 'lib/redis/connection/memory.rb', line 457

def rpushx(key, value)
  raise_argument_error('rpushx') if value.respond_to?(:each) && value.empty?
  data_type_check(key, Array)
  return unless data[key]
  rpush(key, value)
end

#sadd(key, value) ⇒ Object


543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
# File 'lib/redis/connection/memory.rb', line 543

def sadd(key, value)
  data_type_check(key, ::Set)
  value = Array(value)
  raise_argument_error('sadd') if value.empty?

  result = if data[key]
    old_set = data[key].dup
    data[key].merge(value.map(&:to_s))
    (data[key] - old_set).size
  else
    data[key] = ::Set.new(value.map(&:to_s))
    data[key].size
  end

  # 0 = false, 1 = true, 2+ untouched
  return result == 1 if result < 2
  result
end

#saveObject


151
# File 'lib/redis/connection/memory.rb', line 151

def save; end

#scan(start_cursor, *args) ⇒ Object


986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
# File 'lib/redis/connection/memory.rb', line 986

def scan(start_cursor, *args)
  match = "*"
  count = 10

  if idx = args.index("MATCH")
    match = args[idx + 1]
  end

  if idx = args.index("COUNT")
    count = args[idx + 1]
  end

  start_cursor = start_cursor.to_i
  data_type_check(start_cursor, Integer)

  cursor = start_cursor
  returned_keys = []
  final_page = start_cursor + count >= keys(match).length

  if final_page
    previous_keys_been_deleted = (count >= keys(match).length)
    start_index = previous_keys_been_deleted ? 0 : cursor

    returned_keys = keys(match)[start_index..-1]
    cursor = 0
  else
    end_index = start_cursor + (count - 1)
    returned_keys = keys(match)[start_cursor..end_index]
    cursor = start_cursor + count
  end

  return "#{cursor}", returned_keys
end

#scard(key) ⇒ Object


598
599
600
601
602
# File 'lib/redis/connection/memory.rb', line 598

def scard(key)
  data_type_check(key, ::Set)
  return 0 unless data[key]
  data[key].size
end

#sdiff(key1, *keys) ⇒ Object


639
640
641
642
643
644
645
646
# File 'lib/redis/connection/memory.rb', line 639

def sdiff(key1, *keys)
  keys = keys[0] if flatten?(keys)
  [key1, *keys].each { |k| data_type_check(k, ::Set) }
  keys = keys.map { |k| data[k] || ::Set.new }
  keys.inject(data[key1] || Set.new) do |memo, set|
    memo - set
  end.to_a
end

#sdiffstore(destination, key1, *keys) ⇒ Object


648
649
650
651
652
# File 'lib/redis/connection/memory.rb', line 648

def sdiffstore(destination, key1, *keys)
  data_type_check(destination, ::Set)
  result = sdiff(key1, *keys)
  data[destination] = ::Set.new(result)
end

#select(index) ⇒ Object


128
129
130
131
132
# File 'lib/redis/connection/memory.rb', line 128

def select(index)
  data_type_check(index, Integer)
  self.database_id = index
  "OK"
end

#set(key, value, *array_options) ⇒ Object


873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
# File 'lib/redis/connection/memory.rb', line 873

def set(key, value, *array_options)
  option_nx = array_options.delete("NX")
  option_xx = array_options.delete("XX")

  return nil if option_nx && option_xx

  return nil if option_nx && exists(key)
  return nil if option_xx && !exists(key)

  data[key] = value.to_s

  options = Hash[array_options.each_slice(2).to_a]
  ttl_in_seconds = options["EX"] if options["EX"]
  ttl_in_seconds = options["PX"] / 1000.0 if options["PX"]

  expire(key, ttl_in_seconds) if ttl_in_seconds

  "OK"
end

#setbit(key, offset, bit) ⇒ Object


893
894
895
896
897
898
899
900
901
902
903
# File 'lib/redis/connection/memory.rb', line 893

def setbit(key, offset, bit)
  old_val = data[key] ? data[key].unpack('B*')[0].split("") : []
  size_increment = [((offset/8)+1)*8-old_val.length, 0].max
  old_val += Array.new(size_increment).map{"0"}
  original_val = old_val[offset].to_i
  old_val[offset] = bit.to_s
  new_val = ""
  old_val.each_slice(8){|b| new_val = new_val + b.join("").to_i(2).chr }
  data[key] = new_val
  original_val
end

#setex(key, seconds, value) ⇒ Object


905
906
907
908
909
# File 'lib/redis/connection/memory.rb', line 905

def setex(key, seconds, value)
  data[key] = value.to_s
  expire(key, seconds)
  "OK"
end

#setnx(key, value) ⇒ Object


704
705
706
707
708
709
710
711
# File 'lib/redis/connection/memory.rb', line 704

def setnx(key, value)
  if exists(key)
    0
  else
    set(key, value)
    1
  end
end

#setrange(key, offset, value) ⇒ Object


915
916
917
918
919
# File 'lib/redis/connection/memory.rb', line 915

def setrange(key, offset, value)
  return unless data[key]
  s = data[key][offset,value.size]
  data[key][s] = value
end

#shutdownObject


982
# File 'lib/redis/connection/memory.rb', line 982

def shutdown; end

#sinter(*keys) ⇒ Object


604
605
606
607
608
609
610
611
612
613
614
# File 'lib/redis/connection/memory.rb', line 604

def sinter(*keys)
  keys = keys[0] if flatten?(keys)
  raise_argument_error('sinter') if keys.empty?

  keys.each { |k| data_type_check(k, ::Set) }
  return ::Set.new if keys.any? { |k| data[k].nil? }
  keys = keys.map { |k| data[k] || ::Set.new }
  keys.inject do |set, key|
    set & key
  end.to_a
end

#sinterstore(destination, *keys) ⇒ Object


616
617
618
619
620
# File 'lib/redis/connection/memory.rb', line 616

def sinterstore(destination, *keys)
  data_type_check(destination, ::Set)
  result = sinter(*keys)
  data[destination] = ::Set.new(result)
end

#sismember(key, value) ⇒ Object


537
538
539
540
541
# File 'lib/redis/connection/memory.rb', line 537

def sismember(key, value)
  data_type_check(key, ::Set)
  return false unless data[key]
  data[key].include?(value.to_s)
end

#slaveof(host, port) ⇒ Object


984
# File 'lib/redis/connection/memory.rb', line 984

def slaveof(host, port) ; end

#smembers(key) ⇒ Object


531
532
533
534
535
# File 'lib/redis/connection/memory.rb', line 531

def smembers(key)
  data_type_check(key, ::Set)
  return [] unless data[key]
  data[key].to_a.reverse
end

#smove(source, destination, value) ⇒ Object


581
582
583
584
585
586
# File 'lib/redis/connection/memory.rb', line 581

def smove(source, destination, value)
  data_type_check(destination, ::Set)
  result = self.srem(source, value)
  self.sadd(destination, value) if result
  result
end

#spop(key, count = nil) ⇒ Object


588
589
590
591
592
593
594
595
596
# File 'lib/redis/connection/memory.rb', line 588

def spop(key, count = nil)
  data_type_check(key, ::Set)
  results = (count || 1).times.map do
    elem = srandmember(key)
    srem(key, elem) if elem
    elem
  end.compact
  count.nil? ? results.first : results
end

#srandmember(key, number = nil) ⇒ Object


654
655
656
# File 'lib/redis/connection/memory.rb', line 654

def srandmember(key, number=nil)
  number.nil? ? srandmember_single(key) : srandmember_multiple(key, number)
end

#srem(key, value) ⇒ Object


562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
# File 'lib/redis/connection/memory.rb', line 562

def srem(key, value)
  data_type_check(key, ::Set)
  value = Array(value)
  raise_argument_error('srem') if value.empty?
  return false unless data[key]

  if value.is_a?(Array)
    old_size = data[key].size
    values = value.map(&:to_s)
    values.each { |v| data[key].delete(v) }
    deleted = old_size - data[key].size
  else
    deleted = !!data[key].delete?(value.to_s)
  end

  remove_key_for_empty_collection(key)
  deleted
end

#sscan(key, start_cursor, *args) ⇒ Object


658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
# File 'lib/redis/connection/memory.rb', line 658

def sscan(key, start_cursor, *args)
  data_type_check(key, ::Set)
  return ["0", []] unless data[key]

  match = "*"
  count = 10

  if args.size.odd?
    raise_argument_error('sscan')
  end

  if idx = args.index("MATCH")
    match = args[idx + 1]
  end

  if idx = args.index("COUNT")
    count = args[idx + 1]
  end

  start_cursor = start_cursor.to_i

  cursor = start_cursor
  next_keys = []

  if start_cursor + count >= data[key].length
    next_keys = (data[key].to_a)[start_cursor..-1]
    cursor = 0
  else
    cursor = start_cursor + count
    next_keys = (data[key].to_a)[start_cursor..cursor-1]
  end

  filtered_next_keys = next_keys.select{ |k,v| File.fnmatch(match, k)}
  result = filtered_next_keys.flatten.map(&:to_s)

  return ["#{cursor}", result]
end

#strlen(key) ⇒ Object


254
255
256
257
# File 'lib/redis/connection/memory.rb', line 254

def strlen(key)
  return unless data[key]
  data[key].size
end

#subscribe(*channels) ⇒ Object


1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
# File 'lib/redis/connection/memory.rb', line 1329

def subscribe(*channels)
  raise_argument_error('subscribe') if channels.empty?()

  #Create messages for all data from the channels
  channel_replies = channels.map do |channel|
    self.class.channels[channel].slice!(0..-1).map!{|v| ["message", channel, v]}
  end
  channel_replies.flatten!(1)
  channel_replies.compact!()

  #Put messages into the replies for the future
  channels.each_with_index do |channel,index|
    replies << ["subscribe", channel, index+1]
  end
  replies.push(*channel_replies)

  #Add unsubscribe message to stop blocking (see https://github.com/redis/redis-rb/blob/v3.2.1/lib/redis/subscribe.rb#L38)
  replies.push(self.unsubscribe())

  replies.pop() #Last reply will be pushed back on
end

#sunion(*keys) ⇒ Object


622
623
624
625
626
627
628
629
630
631
# File 'lib/redis/connection/memory.rb', line 622

def sunion(*keys)
  keys = keys[0] if flatten?(keys)
  raise_argument_error('sunion') if keys.empty?

  keys.each { |k| data_type_check(k, ::Set) }
  keys = keys.map { |k| data[k] || ::Set.new }
  keys.inject(::Set.new) do |set, key|
    set | key
  end.to_a
end

#sunionstore(destination, *keys) ⇒ Object


633
634
635
636
637
# File 'lib/redis/connection/memory.rb', line 633

def sunionstore(destination, *keys)
  data_type_check(destination, ::Set)
  result = sunion(*keys)
  data[destination] = ::Set.new(result)
end

#syncObject


871
# File 'lib/redis/connection/memory.rb', line 871

def sync ; end

#timeObject


352
353
354
355
# File 'lib/redis/connection/memory.rb', line 352

def time
  microseconds = (Time.now.to_f * 1000000).to_i
  [ microseconds / 1000000, microseconds % 1000000 ]
end

#timeout=(usecs) ⇒ Object


107
108
# File 'lib/redis/connection/memory.rb', line 107

def timeout=(usecs)
end

#ttl(key) ⇒ Object


741
742
743
744
745
746
747
# File 'lib/redis/connection/memory.rb', line 741

def ttl(key)
  if data.expires.include?(key) && (ttl = data.expires[key].to_i - Time.now.to_i) > 0
    ttl
  else
    exists(key) ? -1 : -2
  end
end

#type(key) ⇒ Object


969
970
971
972
973
974
975
976
977
978
# File 'lib/redis/connection/memory.rb', line 969

def type(key)
  case data[key]
    when nil then "none"
    when String then "string"
    when ZSet then "zset"
    when Hash then "hash"
    when Array then "list"
    when ::Set then "set"
  end
end

700
701
702
# File 'lib/redis/connection/memory.rb', line 700

def unlink(*keys)
  delete_keys(keys, 'unlink')
end

#unsubscribe(*channels) ⇒ Object


1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
# File 'lib/redis/connection/memory.rb', line 1381

def unsubscribe(*channels)
  if channels.empty?()
    replies << ["unsubscribe", nil, 0]
  else
    channels.each do |channel|
      replies << ["unsubscribe", channel, 0]
    end
  end
  replies.pop() #Last reply will be pushed back on
end

#zadd(key, *args) ⇒ Object


1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
# File 'lib/redis/connection/memory.rb', line 1020

def zadd(key, *args)
  option_xx = args.delete("XX")
  option_nx = args.delete("NX")
  option_ch = args.delete("CH")
  option_incr = args.delete("INCR")

  if option_xx && option_nx
    raise_options_error("XX", "NX")
  end

  if option_incr && args.size > 2
    raise_options_error("INCR")
  end

  if !args.first.is_a?(Array)
    if args.size < 2
      raise_argument_error('zadd')
    elsif args.size.odd?
      raise_syntax_error
    end
  else
    unless args.all? {|pair| pair.size == 2 }
      raise_syntax_error
    end
  end

  data_type_check(key, ZSet)
  data[key] ||= ZSet.new

  # Turn [1, 2, 3, 4] into [[1, 2], [3, 4]] unless it is already
  args = args.each_slice(2).to_a unless args.first.is_a?(Array)

  changed = 0
  exists = args.map(&:last).count { |el| !hexists(key, el.to_s) }

  args.each do |score, value|
    if option_nx && hexists(key, value.to_s)
      next
    end

    if option_xx && !hexists(key, value.to_s)
      exists -= 1
      next
    end

    if option_incr
      data[key][value.to_s] ||= 0
      return data[key].increment(value, score).to_s
    end

    if option_ch && data[key][value.to_s] != score
      changed += 1
    end
    data[key][value.to_s] = score
  end

  if option_incr
    changed = changed.zero? ? nil : changed
    exists = exists.zero? ? nil : exists
  end

  option_ch ? changed : exists
end

#zcard(key) ⇒ Object


1127
1128
1129
1130
# File 'lib/redis/connection/memory.rb', line 1127

def zcard(key)
  data_type_check(key, ZSet)
  data[key] ? data[key].size : 0
end

#zcount(key, min, max) ⇒ Object


1144
1145
1146
1147
1148
# File 'lib/redis/connection/memory.rb', line 1144

def zcount(key, min, max)
  data_type_check(key, ZSet)
  return 0 unless data[key]
  data[key].select_by_score(min, max).size
end

#zincrby(key, num, value) ⇒ Object


1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
# File 'lib/redis/connection/memory.rb', line 1150

def zincrby(key, num, value)
  data_type_check(key, ZSet)
  data[key] ||= ZSet.new
  data[key][value.to_s] ||= 0
  data[key].increment(value.to_s, num)

  if num =~ /^\+?inf/
    "inf"
  elsif num == "-inf"
    "-inf"
  else
    data[key][value.to_s].to_s
  end
end

#zinterstore(out, *args) ⇒ Object


1288
1289
1290
1291
1292
1293
# File 'lib/redis/connection/memory.rb', line 1288

def zinterstore(out, *args)
  data_type_check(out, ZSet)
  args_handler = SortedSetArgumentHandler.new(args)
  data[out] = SortedSetIntersectStore.new(args_handler, data).call
  data[out].size
end

#zpopmax(key, count = nil) ⇒ Object


1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
# File 'lib/redis/connection/memory.rb', line 1097

def zpopmax(key, count = nil)
  data_type_check(key, ZSet)
  return [] unless data[key]
  sorted_members = sort_keys(data[key])
  results = sorted_members.last(count || 1).reverse!
  results.each do |member|
    zrem(key, member.first)
  end
  count.nil? ? results.first : results.flatten
end

#zpopmin(key, count = nil) ⇒ Object


1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
# File 'lib/redis/connection/memory.rb', line 1108

def zpopmin(key, count = nil)
  data_type_check(key, ZSet)
  return [] unless data[key]
  sorted_members = sort_keys(data[key])
  results = sorted_members.first(count || 1)
  results.each do |member|
    zrem(key, member.first)
  end
  count.nil? ? results.first : results.flatten
end

#zrange(key, start, stop, with_scores = nil) ⇒ Object


1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
# File 'lib/redis/connection/memory.rb', line 1179

def zrange(key, start, stop, with_scores = nil)
  data_type_check(key, ZSet)
  return [] unless data[key]

  results = sort_keys(data[key])
  # Select just the keys unless we want scores
  results = results.map(&:first) unless with_scores
  start = [start, -results.size].max
  (results[start..stop] || []).flatten.map(&:to_s)
end

#zrangebylex(key, start, stop, *opts) ⇒ Object


1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
# File 'lib/redis/connection/memory.rb', line 1190

def zrangebylex(key, start, stop, *opts)
  data_type_check(key, ZSet)
  return [] unless data[key]
  zset = data[key]

  sorted = if zset.identical_scores?
    zset.keys.sort { |x, y| x.to_s <=> y.to_s }
  else
    zset.keys
  end

  range = get_range start, stop, sorted.first, sorted.last

  filtered = []
  sorted.each do |element|
    filtered << element if (range[0][:value]..range[1][:value]).cover?(element)
  end
  filtered.shift if filtered[0] == range[0][:value] && !range[0][:inclusive]
  filtered.pop if filtered.last == range[1][:value] && !range[1][:inclusive]

  limit = get_limit(opts, filtered)
  if limit
    filtered = filtered[limit[0]..-1].take(limit[1])
  end

  filtered
end

#zrangebyscore(key, min, max, *opts) ⇒ Object


1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
# File 'lib/redis/connection/memory.rb', line 1233

def zrangebyscore(key, min, max, *opts)
  data_type_check(key, ZSet)
  return [] unless data[key]

  range = data[key].select_by_score(min, max)
  vals = if opts.include?('WITHSCORES')
    range.sort_by {|_,v| v }
  else
    range.keys.sort_by {|k| range[k] }
  end

  limit = get_limit(opts, vals)
  vals = vals[*limit] if limit

  vals.flatten.map(&:to_s)
end

#zrank(key, value) ⇒ Object


1165
1166
1167
1168
1169
1170
# File 'lib/redis/connection/memory.rb', line 1165

def zrank(key, value)
  data_type_check(key, ZSet)
  z = data[key]
  return unless z
  z.keys.sort_by {|k| z[k] }.index(value.to_s)
end

#zrem(key, value) ⇒ Object


1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
# File 'lib/redis/connection/memory.rb', line 1084

def zrem(key, value)
  data_type_check(key, ZSet)
  values = Array(value)
  return 0 unless data[key]

  response = values.map do |v|
    data[key].delete(v.to_s) if data[key].has_key?(v.to_s)
  end.compact.size

  remove_key_for_empty_collection(key)
  response
end

#zremrangebyrank(key, start, stop) ⇒ Object


1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
# File 'lib/redis/connection/memory.rb', line 1277

def zremrangebyrank(key, start, stop)
  data_type_check(key, ZSet)
  return 0 unless data[key]

  sorted_elements = data[key].sort_by { |k, v| v }
  start = sorted_elements.length if start > sorted_elements.length
  elements_to_delete = sorted_elements[start..stop]
  elements_to_delete.each { |elem, rank| data[key].delete(elem) }
  elements_to_delete.size
end

#zremrangebyscore(key, min, max) ⇒ Object


1268
1269
1270
1271
1272
1273
1274
1275
# File 'lib/redis/connection/memory.rb', line 1268

def zremrangebyscore(key, min, max)
  data_type_check(key, ZSet)
  return 0 unless data[key]

  range = data[key].select_by_score(min, max)
  range.each {|k,_| data[key].delete(k) }
  range.size
end

#zrevrange(key, start, stop, with_scores = nil) ⇒ Object


1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
# File 'lib/redis/connection/memory.rb', line 1222

def zrevrange(key, start, stop, with_scores = nil)
  data_type_check(key, ZSet)
  return [] unless data[key]

  if with_scores
    data[key].sort_by {|_,v| -v }
  else
    data[key].keys.sort_by {|k| -data[key][k] }
  end[start..stop].flatten.map(&:to_s)
end

#zrevrangebylex(key, start, stop, *args) ⇒ Object


1218
1219
1220
# File 'lib/redis/connection/memory.rb', line 1218

def zrevrangebylex(key, start, stop, *args)
  zrangebylex(key, stop, start, args).reverse
end

#zrevrangebyscore(key, max, min, *opts) ⇒ Object


1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
# File 'lib/redis/connection/memory.rb', line 1250

def zrevrangebyscore(key, max, min, *opts)
  opts = opts.flatten
  data_type_check(key, ZSet)
  return [] unless data[key]

  range = data[key].select_by_score(min, max)
  vals = if opts.include?('WITHSCORES')
    range.sort_by {|_,v| -v }
  else
    range.keys.sort_by {|k| -range[k] }
  end

  limit = get_limit(opts, vals)
  vals = vals[*limit] if limit

  vals.flatten.map(&:to_s)
end

#zrevrank(key, value) ⇒ Object


1172
1173
1174
1175
1176
1177
# File 'lib/redis/connection/memory.rb', line 1172

def zrevrank(key, value)
  data_type_check(key, ZSet)
  z = data[key]
  return unless z
  z.keys.sort_by {|k| -z[k] }.index(value.to_s)
end

#zscan(key, start_cursor, *args) ⇒ Object


1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
# File 'lib/redis/connection/memory.rb', line 1403

def zscan(key, start_cursor, *args)
  data_type_check(key, ZSet)
  return [] unless data[key]

  match = "*"
  count = 10

  if args.size.odd?
    raise_argument_error('zscan')
  end

  if idx = args.index("MATCH")
    match = args[idx + 1]
  end

  if idx = args.index("COUNT")
    count = args[idx + 1]
  end

  start_cursor = start_cursor.to_i
  data_type_check(start_cursor, Integer)

  cursor = start_cursor
  next_keys = []

  sorted_keys = sort_keys(data[key])

  if start_cursor + count >= sorted_keys.length
    next_keys = sorted_keys.to_a.select { |k| File.fnmatch(match, k[0]) } [start_cursor..-1]
    cursor = 0
  else
    cursor = start_cursor + count
    next_keys = sorted_keys.to_a.select { |k| File.fnmatch(match, k[0]) } [start_cursor..cursor-1]
  end
  return "#{cursor}", next_keys.flatten.map(&:to_s)
end

#zscan_each(key, *args, &block) ⇒ Object

Originally from redis-rb


1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
# File 'lib/redis/connection/memory.rb', line 1441

def zscan_each(key, *args, &block)
  data_type_check(key, ZSet)
  return [] unless data[key]

  return to_enum(:zscan_each, key, options) unless block_given?
  cursor = 0
  loop do
    cursor, values = zscan(key, cursor, options)
    values.each(&block)
    break if cursor == "0"
  end
end

#zscore(key, value) ⇒ Object


1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
# File 'lib/redis/connection/memory.rb', line 1132

def zscore(key, value)
  data_type_check(key, ZSet)
  value = data[key] && data[key][value.to_s]
  if value == Float::INFINITY
    "inf"
  elsif value == -Float::INFINITY
    "-inf"
  elsif value
    value.to_s
  end
end

#zunionstore(out, *args) ⇒ Object


1295
1296
1297
1298
1299
1300
# File 'lib/redis/connection/memory.rb', line 1295

def zunionstore(out, *args)
  data_type_check(out, ZSet)
  args_handler = SortedSetArgumentHandler.new(args)
  data[out] = SortedSetUnionStore.new(args_handler, data).call
  data[out].size
end