-
Notifications
You must be signed in to change notification settings - Fork 39
/
client.rb
1029 lines (860 loc) · 38.1 KB
/
client.rb
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
171
172
173
174
175
176
177
178
179
180
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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
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
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
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
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# Copyright 2014-2023 Aerospike, Inc.
#
# Portions may be licensed to Aerospike, Inc. under one or more contributor
# license agreements.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
require "digest"
require "base64"
module Aerospike
##
# Client class manages the Aerospike cluster nodes under the hood, and
# provides methods to access the database.
#
# All internal code is thread-safe, and can be used from multiple threads
# without any need for synchronization.
# Examples:
#
# # connect to the database
# client = Client.new('192.168.0.1')
#
# #=> raises Aerospike::Exceptions::Timeout if a +:timeout+ is specified and
# +:fail_if_not_connected+ set to true
class Client
attr_accessor :default_admin_policy
attr_accessor :default_batch_policy
attr_accessor :default_info_policy
attr_accessor :default_query_policy
attr_accessor :default_read_policy
attr_accessor :default_scan_policy
attr_accessor :default_write_policy
attr_accessor :default_operate_policy
attr_accessor :cluster
def initialize(hosts = nil, policy: ClientPolicy.new, connect: true)
hosts = ::Aerospike::Host::Parse.(hosts || ENV["AEROSPIKE_HOSTS"] || "localhost")
policy = create_policy(policy, ClientPolicy)
set_default_policies(policy.policies)
@cluster = Cluster.new(policy, hosts)
@cluster.add_cluster_config_change_listener(self)
self.connect if connect
self
end
##
# Connect to the cluster.
def connect
@cluster.connect
end
##
# Closes all client connections to database server nodes.
def close
@cluster.close
end
##
# Determines if there are active connections to the database server cluster.
# Returns +true+ if connections exist.
def connected?
@cluster.connected?
end
##
# Returns array of active server nodes in the cluster.
def nodes
@cluster.nodes
end
##
# Returns list of active server node names in the cluster.
def node_names
@cluster.nodes.map(&:name)
end
def supports_feature?(feature)
@cluster.supports_feature?(feature)
end
#-------------------------------------------------------
# Write Record Operations
#-------------------------------------------------------
##
# Writes record bin(s).
# The policy options specifiy the transaction timeout, record expiration
# and how the transaction is handled when the record already exists.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Examples:
#
# client.put key, {'bin', 'value string'}, :timeout => 0.001
def put(key, bins, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = WriteCommand.new(@cluster, policy, key, hash_to_bins(bins), Aerospike::Operation::WRITE)
execute_command(command)
end
#-------------------------------------------------------
# Operations string
#-------------------------------------------------------
##
# Appends bin values string to existing record bin values.
# The policy specifies the transaction timeout, record expiration and
# how the transaction is handled when the record already exists.
#
# This call only works for string values.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Examples:
#
# client.append key, {'bin', 'value to append'}, :timeout => 0.001
def append(key, bins, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = WriteCommand.new(@cluster, policy, key, hash_to_bins(bins), Aerospike::Operation::APPEND)
execute_command(command)
end
##
# Prepends bin values string to existing record bin values.
# The policy specifies the transaction timeout, record expiration and
# how the transaction is handled when the record already exists.
#
# This call works only for string values.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Examples:
#
# client.prepend key, {'bin', 'value to prepend'}, :timeout => 0.001
def prepend(key, bins, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = WriteCommand.new(@cluster, policy, key, hash_to_bins(bins), Aerospike::Operation::PREPEND)
execute_command(command)
end
#-------------------------------------------------------
# Arithmetic Operations
#-------------------------------------------------------
##
# Adds integer bin values to existing record bin values.
# The policy specifies the transaction timeout, record expiration and
# how the transaction is handled when the record already exists.
#
# This call only works for integer values.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Examples:
#
# client.add key, {'bin', -1}, :timeout => 0.001
def add(key, bins, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = WriteCommand.new(@cluster, policy, key, hash_to_bins(bins), Aerospike::Operation::ADD)
execute_command(command)
end
#-------------------------------------------------------
# Delete Operations
#-------------------------------------------------------
##
# Deletes record for specified key.
#
# The policy specifies the transaction timeout.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Returns +true+ if a record with corresponding +key+ existed.
# Examples:
#
# existed = client.delete key, :timeout => 0.001
def delete(key, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = DeleteCommand.new(@cluster, policy, key)
execute_command(command)
command.existed
end
##
# Removes records in the specified namespace/set efficiently.
#
# This method is orders of magnitude faster than deleting records one at a
# time. It requires Aerospike Server version 3.12 or later. See
# https://www.aerospike.com/docs/reference/info#truncate for further
# information.
#
# This asynchronous server call may return before the truncate is complete.
# The user can still write new records after the server call returns
# because new records will have last update times greater than the truncate
# cut-off (set at the time of the truncate call.)
#
# If no policy options are provided, +@default_info_policy+ will be used.
def truncate(namespace, set_name = nil, before_last_update = nil, options = {})
policy = create_policy(options, Policy, default_info_policy)
node = @cluster.random_node
if set_name && !set_name.to_s.strip.empty?
str_cmd = "truncate:namespace=#{namespace}"
str_cmd << ";set=#{set_name}" unless set_name.to_s.strip.empty?
else
if node.supports_feature?(Aerospike::Features::TRUNCATE_NAMESPACE)
str_cmd = "truncate-namespace:namespace=#{namespace}"
else
str_cmd = "truncate:namespace=#{namespace}"
end
end
if before_last_update
lut_nanos = (before_last_update.to_f * 1_000_000_000.0).round
str_cmd << ";lut=#{lut_nanos}"
elsif supports_feature?(Aerospike::Features::LUT_NOW)
# Servers >= 4.3.1.4 require lut argument
str_cmd << ";lut=now"
end
response = send_info_command(policy, str_cmd, node).upcase
return if response == "OK"
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_ERROR, "Truncate failed: #{response}")
end
#-------------------------------------------------------
# Touch Operations
#-------------------------------------------------------
##
# Creates record if it does not already exist. If the record exists,
# the record's time to expiration will be reset to the policy's expiration.
#
# If no policy options are provided, +@default_write_policy+ will be used.
# Examples:
#
# client.touch key, :timeout => 0.001
def touch(key, options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = TouchCommand.new(@cluster, policy, key)
execute_command(command)
end
#-------------------------------------------------------
# Existence-Check Operations
#-------------------------------------------------------
##
# Determines if a record key exists.
# The policy can be used to specify timeouts.
def exists(key, options = nil)
policy = create_policy(options, Policy, default_read_policy)
command = ExistsCommand.new(@cluster, policy, key)
execute_command(command)
command.exists
end
#-------------------------------------------------------
# Read Record Operations
#-------------------------------------------------------
# Read record header and bins for specified key.
# The policy can be used to specify timeouts.
def get(key, bin_names = nil, options = nil)
policy = create_policy(options, Policy, default_read_policy)
command = ReadCommand.new(@cluster, policy, key, bin_names)
execute_command(command)
command.record
end
# Read record generation and expiration only for specified key. Bins are not read.
# The policy can be used to specify timeouts.
def get_header(key, options = nil)
policy = create_policy(options, Policy, default_read_policy)
command = ReadHeaderCommand.new(@cluster, policy, key)
execute_command(command)
command.record
end
#-------------------------------------------------------
# Batch Read Operations
#-------------------------------------------------------
# Read multiple record headers and bins for specified keys in one batch call.
# The returned records are in positional order with the original key array order.
# If a key is not found, the positional record will be nil.
# The policy can be used to specify timeouts and protocol type.
def batch_get(keys, bin_names = nil, options = nil)
policy = create_policy(options, BatchPolicy, default_batch_policy)
results = Array.new(keys.length)
info_flags = INFO1_READ
case bin_names
when :all, nil, []
info_flags |= INFO1_GET_ALL
bin_names = nil
when :none
info_flags |= INFO1_NOBINDATA
bin_names = nil
end
if policy.use_batch_direct
key_map = BatchItem.generate_map(keys)
execute_batch_direct_commands(policy, keys) do |node, batch|
BatchDirectCommand.new(node, batch, policy, key_map, bin_names, results, info_flags)
end
else
execute_batch_index_commands(policy, keys) do |node, batch|
BatchIndexCommand.new(node, batch, policy, bin_names, results, info_flags)
end
end
results
end
# Read multiple record header data for specified keys in one batch call.
# The returned records are in positional order with the original key array order.
# If a key is not found, the positional record will be nil.
# The policy can be used to specify timeouts and protocol type.
def batch_get_header(keys, options = nil)
batch_get(keys, :none, options)
end
# Check if multiple record keys exist in one batch call.
# The returned boolean array is in positional order with the original key array order.
# The policy can be used to specify timeouts and protocol type.
def batch_exists(keys, options = nil)
policy = create_policy(options, BatchPolicy, default_batch_policy)
results = Array.new(keys.length)
if policy.use_batch_direct
key_map = BatchItem.generate_map(keys)
execute_batch_direct_commands(policy, keys) do |node, batch|
BatchDirectExistsCommand.new(node, batch, policy, key_map, results)
end
else
execute_batch_index_commands(policy, keys) do |node, batch|
BatchIndexExistsCommand.new(node, batch, policy, results)
end
end
results
end
#-------------------------------------------------------
# Generic Database Operations
#-------------------------------------------------------
# Perform multiple read/write operations on a single key in one batch call.
# An example would be to add an integer value to an existing record and then
# read the result, all in one database call. Operations are executed in
# the order they are specified.
def operate(key, operations, options = nil)
policy = create_policy(options, OperatePolicy, default_operate_policy)
args = OperateArgs.new(cluster, policy, default_write_policy, default_operate_policy, key, operations)
command = OperateCommand.new(@cluster, key, args)
execute_command(command)
command.record
end
#---------------------------------------------------------------
# User defined functions (Supported by Aerospike 3 servers only)
#---------------------------------------------------------------
# Register package containing user defined functions with server.
# This asynchronous server call will return before command is complete.
# The user can optionally wait for command completion by using the returned
# RegisterTask instance.
#
# This method is only supported by Aerospike 3 servers.
def register_udf_from_file(client_path, server_path, language, options = nil)
udf_body = File.read(client_path)
register_udf(udf_body, server_path, language, options)
end
# Register package containing user defined functions with server.
# This asynchronous server call will return before command is complete.
# The user can optionally wait for command completion by using the returned
# RegisterTask instance.
#
# This method is only supported by Aerospike 3 servers.
def register_udf(udf_body, server_path, language, options = nil)
policy = create_policy(options, Policy, default_info_policy)
content = Base64.strict_encode64(udf_body).force_encoding("binary")
str_cmd = "udf-put:filename=#{server_path};content=#{content};"
str_cmd << "content-len=#{content.length};udf-type=#{language};"
# Send UDF to one node. That node will distribute the UDF to other nodes.
response_map = @cluster.request_info(policy, str_cmd)
res = {}
response_map.each do |k, response|
vals = response.to_s.split(";")
vals.each do |pair|
k, v = pair.split("=", 2)
res[k] = v
end
end
if res["error"]
raise Aerospike::Exceptions::CommandRejected.new("Registration failed: #{res["error"]}\nFile: #{res["file"]}\nLine: #{res["line"]}\nMessage: #{res["message"]}")
end
UdfRegisterTask.new(@cluster, server_path)
end
# RemoveUDF removes a package containing user defined functions in the server.
# This asynchronous server call will return before command is complete.
# The user can optionally wait for command completion by using the returned
# RemoveTask instance.
#
# This method is only supported by Aerospike 3 servers.
def remove_udf(udf_name, options = nil)
policy = create_policy(options, Policy, default_info_policy)
str_cmd = "udf-remove:filename=#{udf_name};"
# Send command to one node. That node will distribute it to other nodes.
# Send UDF to one node. That node will distribute the UDF to other nodes.
response_map = @cluster.request_info(policy, str_cmd)
_, response = response_map.first
if response == "ok"
UdfRemoveTask.new(@cluster, udf_name)
else
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_ERROR, response)
end
end
# ListUDF lists all packages containing user defined functions in the server.
# This method is only supported by Aerospike 3 servers.
def list_udf(options = nil)
policy = create_policy(options, Policy, default_info_policy)
str_cmd = "udf-list"
# Send command to one node. That node will distribute it to other nodes.
response_map = @cluster.request_info(policy, str_cmd)
_, response = response_map.first
vals = response.split(";")
vals.map do |udf_info|
next if udf_info.strip! == ""
udf_parts = udf_info.split(",")
udf = UDF.new
udf_parts.each do |values|
k, v = values.split("=", 2)
case k
when "filename"
udf.filename = v
when "hash"
udf.hash = v
when "type"
udf.language = v
end
end
udf
end
end
# Execute user defined function on server and return results.
# The function operates on a single record.
# The package name is used to locate the udf file location:
#
# udf file = <server udf dir>/<package name>.lua
#
# This method is only supported by Aerospike 3 servers.
def execute_udf(key, package_name, function_name, args = [], options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
command = ExecuteCommand.new(@cluster, policy, key, package_name, function_name, args)
execute_command(command)
record = command.record
return nil if !record || record.bins.empty?
result_map = record.bins
# User defined functions don't have to return a value.
key, obj = result_map.detect { |k, _| k.include?("SUCCESS") }
return obj if key
key, obj = result_map.detect { |k, _| k.include?("FAILURE") }
message = key ? obj.to_s : "Invalid UDF return value"
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::UDF_BAD_RESPONSE, message)
end
# execute_udf_on_query applies user defined function on records that match the statement filter.
# Records are not returned to the client.
# This asynchronous server call will return before command is complete.
# The user can optionally wait for command completion by using the returned
# ExecuteTask instance.
#
# This method is only supported by Aerospike 3 servers.
# If the policy is nil, the default relevant policy will be used.
def execute_udf_on_query(statement, package_name, function_name, function_args = [], options = nil)
policy = create_policy(options, QueryPolicy, default_query_policy)
nodes = @cluster.nodes
if nodes.empty?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Executing UDF failed because cluster is empty.")
end
statement = statement.clone
statement.set_aggregate_function(package_name, function_name, function_args, false)
# Use a thread per node
nodes.each do |node|
partitions = node.cluster.node_partitions(node, statement.namespace)
Thread.new do
Thread.current.abort_on_exception = true
begin
command = QueryCommand.new(node, policy, statement, nil, partitions)
execute_command(command)
rescue => e
Aerospike.logger.error(e)
raise e
end
end
end
ExecuteTask.new(@cluster, statement)
end
# Create secondary index.
# This asynchronous server call will return before command is complete.
# The user can optionally wait for command completion by using the returned
# IndexTask instance.
#
# This method is only supported by Aerospike 3 servers.
# index_type should be :string, :numeric or :geo2dsphere (requires server version 3.7 or later)
# collection_type should be :list, :mapkeys or :mapvalues
# ctx is an optional list of context. Supported on server v6.1+.
def create_index(namespace, set_name, index_name, bin_name, index_type, collection_type = nil, options = nil, ctx: nil)
if options.nil? && collection_type.is_a?(Hash)
options, collection_type = collection_type, nil
end
policy = create_policy(options, Policy, default_info_policy)
str_cmd = "sindex-create:ns=#{namespace}"
str_cmd << ";set=#{set_name}" unless set_name.to_s.strip.empty?
str_cmd << ";indexname=#{index_name};numbins=1"
str_cmd << ";context=#{CDT::Context.base64(ctx)}" unless ctx.to_a.empty?
str_cmd << ";indextype=#{collection_type.to_s.upcase}" if collection_type
str_cmd << ";indexdata=#{bin_name},#{index_type.to_s.upcase}"
str_cmd << ";priority=normal"
# Send index command to one node. That node will distribute the command to other nodes.
response = send_info_command(policy, str_cmd).upcase
if response == "OK"
# Return task that could optionally be polled for completion.
return IndexTask.new(@cluster, namespace, index_name)
end
if response.start_with?("FAIL:200")
# Index has already been created. Do not need to poll for completion.
return IndexTask.new(@cluster, namespace, index_name, true)
end
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::INDEX_GENERIC, "Create index failed: #{response}")
end
# Delete secondary index.
# This method is only supported by Aerospike 3 servers.
def drop_index(namespace, set_name, index_name, options = nil)
policy = create_policy(options, Policy, default_info_policy)
str_cmd = "sindex-delete:ns=#{namespace}"
str_cmd << ";set=#{set_name}" unless set_name.to_s.strip.empty?
str_cmd << ";indexname=#{index_name}"
# Send index command to one node. That node will distribute the command to other nodes.
response = send_info_command(policy, str_cmd).upcase
return if response == "OK"
# Index did not previously exist. Return without error.
return if response.start_with?("FAIL:201")
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::INDEX_GENERIC, "Drop index failed: #{response}")
end
def request_info(*commands, policy: nil)
policy = create_policy(policy, Policy, default_info_policy)
@cluster.request_info(policy, *commands)
end
#-------------------------------------------------------
# Scan Operations
#-------------------------------------------------------
# Reads records in specified namespace and set using partition filter.
# If the policy's concurrent_nodes is specified, each server node will be read in
# parallel. Otherwise, server nodes are read sequentially.
# If partition_filter is nil, all partitions will be scanned.
# If the policy is nil, the default relevant policy will be used.
# This method is only supported by Aerospike 4.9+ servers.
def scan_partitions(partition_filter, namespace, set_name, bin_names = nil, options = nil)
policy = create_policy(options, ScanPolicy, default_scan_policy)
# Retry policy must be one-shot for scans.
# copy on write for policy
new_policy = policy.clone
nodes = @cluster.nodes
if nodes.empty?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Scan failed because cluster is empty.")
end
tracker = Aerospike::PartitionTracker.new(policy, nodes, partition_filter)
recordset = Recordset.new(policy.record_queue_size, 1, :scan)
Thread.new do
Thread.current.abort_on_exception = true
ScanExecutor.scan_partitions(policy, @cluster, tracker, namespace, set_name, recordset, bin_names)
end
recordset
end
# Reads all records in specified namespace and set for one node only.
# If the policy is nil, the default relevant policy will be used.
def scan_node_partitions(node, namespace, set_name, bin_names = nil, options = nil)
policy = create_policy(options, ScanPolicy, default_scan_policy)
# Retry policy must be one-shot for scans.
# copy on write for policy
new_policy = policy.clone
unless node.active?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Scan failed because cluster is empty.")
end
tracker = Aerospike::PartitionTracker.new(policy, [node])
recordset = Recordset.new(policy.record_queue_size, 1, :scan)
Thread.new do
Thread.current.abort_on_exception = true
ScanExecutor.scan_partitions(policy, @cluster, tracker, namespace, set_name, recordset, bin_names)
end
recordset
end
# Reads all records in specified namespace and set from all nodes.
# If the policy's concurrent_nodes is specified, each server node will be read in
# parallel. Otherwise, server nodes are read sequentially.
# If the policy is nil, the default relevant policy will be used.
def scan_all(namespace, set_name, bin_names = nil, options = nil)
scan_partitions(Aerospike::PartitionFilter.all, namespace, set_name, bin_names, options)
end
# ScanNode reads all records in specified namespace and set, from one node only.
# The policy can be used to specify timeouts.
def scan_node(node, namespace, set_name, bin_names = nil, options = nil)
scan_node_partitions(node, namespace, set_name, bin_names, options)
end
#--------------------------------------------------------
# Query functions (Supported by Aerospike 3 servers only)
#--------------------------------------------------------
# Executes a query for specified partitions and returns a recordset.
# The query executor puts records on the queue from separate threads.
# The caller can concurrently pop records off the queue through the
# recordset.records API.
#
# This method is only supported by Aerospike 4.9+ servers.
# If the policy is nil, the default relevant policy will be used.
def query_partitions(partition_filter, statement, options = nil)
policy = create_policy(options, QueryPolicy, default_query_policy)
new_policy = policy.clone
nodes = @cluster.nodes
if nodes.empty?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Query failed because cluster is empty.")
end
# result recordset
recordset = Recordset.new(policy.record_queue_size, 1, :query)
tracker = PartitionTracker.new(policy, nodes, partition_filter)
Thread.new do
Thread.current.abort_on_exception = true
QueryExecutor.query_partitions(@cluster, policy, tracker, statement, recordset)
end
recordset
end
# Query executes a query and returns a recordset.
# The query executor puts records on a channel from separate threads.
# The caller can concurrently pops records off the channel through the
# record channel.
#
# This method is only supported by Aerospike 3 servers.
# If the policy is nil, a default policy will be generated.
def query(statement, options = nil)
query_partitions(Aerospike::PartitionFilter.all, statement, options)
end
#----------------------------------------------------------
# Query/Execute (Supported by Aerospike 3+ servers only)
#----------------------------------------------------------
# QueryExecute applies operations on records that match the statement filter.
# Records are not returned to the client.
# This asynchronous server call will return before the command is complete.
# The user can optionally wait for command completion by using the returned
# ExecuteTask instance.
#
# This method is only supported by Aerospike 3+ servers.
# If the policy is nil, the default relevant policy will be used.
#
# @param statement [Aerospike::Statement] The query or batch read statement.
# @param operations [Array<Aerospike::Operation>] An optional list of operations.
# @param options [Hash] An optional hash of policy options.
# @return [Aerospike::ExecuteTask] An ExecuteTask instance that can be used to wait for command completion.
#
# @raise [Aerospike::Exceptions::Aerospike] if an error occurs during the operation.
def query_execute(statement, operations = [], options = nil)
policy = create_policy(options, WritePolicy, default_write_policy)
if statement.nil?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::INVALID_COMMAND, "Query failed of invalid statement.")
end
statement = statement.clone
unless operations.empty?
statement.operations = operations
end
task_id = statement.task_id
nodes = @cluster.nodes
if nodes.empty?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Query failed because cluster is empty.")
end
# Use a thread per node
nodes.each do |node|
Thread.new do
Thread.current.abort_on_exception = true
begin
command = ServerCommand.new(@cluster, node, policy, statement, true, task_id)
execute_command(command)
rescue => e
Aerospike.logger.error(e)
raise e
end
end
end
ExecuteTask.new(@cluster, statement)
end
#-------------------------------------------------------
# User administration
#-------------------------------------------------------
# Create user with password and roles. Clear-text password will be hashed using bcrypt
# before sending to server.
def create_user(user, password, roles, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
hash = LoginCommand.hash_password(password)
command = AdminCommand.new
command.create_user(@cluster, policy, user, hash, roles)
end
# Remove user from cluster.
def drop_user(user, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.drop_user(@cluster, policy, user)
end
# Change user's password. Clear-text password will be hashed using bcrypt before sending to server.
def change_password(user, password, options = nil)
raise Aerospike::Exceptions::Aerospike.new(INVALID_USER) unless @cluster.user && @cluster.user != ""
policy = create_policy(options, AdminPolicy, default_admin_policy)
hash = LoginCommand.hash_password(password)
command = AdminCommand.new
if user == @cluster.user
# Change own password.
command.change_password(@cluster, policy, user, hash)
else
# Change other user's password by user admin.
command.set_password(@cluster, policy, user, hash)
end
@cluster.change_password(user, hash)
end
# Add roles to user's list of roles.
def grant_roles(user, roles, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.grant_roles(@cluster, policy, user, roles)
end
# Remove roles from user's list of roles.
def revoke_roles(user, roles, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.revoke_roles(@cluster, policy, user, roles)
end
# Retrieve roles for a given user.
def query_user(user, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.query_user(@cluster, policy, user)
end
# Retrieve all users and their roles.
def query_users(options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.query_users(@cluster, policy)
end
# Retrieve privileges for a given role.
def query_role(role, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.query_role(@cluster, policy, role)
end
# Retrieve all roles and their privileges.
def query_roles(options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.query_roles(@cluster, policy)
end
# Create a user-defined role.
# Quotas require server security configuration "enable-quotas" to be set to true.
# Pass 0 for quota values for no limit.
def create_role(role_name, privileges = [], allowlist = [], read_quota = 0, write_quota = 0, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.create_role(@cluster, policy, role_name, privileges, allowlist, read_quota, write_quota)
end
# Remove a user-defined role.
def drop_role(role_name, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.drop_role(@cluster, policy, role_name)
end
# Grant privileges to a user-defined role.
def grant_privileges(role_name, privileges, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.grant_privileges(@cluster, policy, role_name, privileges)
end
# Revoke privileges from a user-defined role.
def revoke_privileges(role_name, privileges, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.revoke_privileges(@cluster, policy, role_name, privileges)
end
# Set or update quota for a role.
def set_quotas(role_name, read_quota, write_quota, options = nil)
policy = create_policy(options, AdminPolicy, default_admin_policy)
command = AdminCommand.new
command.set_quotas(@cluster, policy, role_name, read_quota, write_quota)
end
private
def set_default_policies(policies)
self.default_info_policy = create_policy(policies[:info], Policy)
self.default_read_policy = create_policy(policies[:read], Policy)
self.default_admin_policy = create_policy(policies[:admin], AdminPolicy)
self.default_batch_policy = create_policy(policies[:batch], BatchPolicy)
self.default_query_policy = create_policy(policies[:query], QueryPolicy)
self.default_scan_policy = create_policy(policies[:scan], ScanPolicy)
self.default_write_policy = create_policy(policies[:write], WritePolicy)
self.default_operate_policy = create_policy(policies[:operate], OperatePolicy)
end
def send_info_command(policy, command, node = nil)
Aerospike.logger.debug { "Sending info command: #{command}" }
if node
_, response = @cluster.request_node_info(node, policy, command).first
else
_, response = @cluster.request_info(policy, command).first
end
response.to_s
end
def hash_to_bins(hash)
if hash.is_a?(Bin)
[hash]
elsif hash.is_a?(Array)
hash # it is a list of bins
else
hash.map do |k, v|
raise Aerospike::Exceptions::Parse.new("bin name `#{k}` is not a string.") unless k.is_a?(String)
Bin.new(k, v)
end
end
end
def create_policy(policy, policy_klass, default_policy = nil)
case policy
when nil
default_policy || policy_klass.new
when policy_klass
policy
when Hash
policy_klass.new(policy)
else
fail TypeError, "policy should be a #{policy_klass.name} instance or a Hash"
end
end
def cluster=(cluster)
@cluster = cluster
end
def cluster_config_changed(cluster)
Aerospike.logger.debug { "Cluster config change detected; active nodes: #{cluster.nodes.map(&:name)}" }
setup_command_validators
end
def setup_command_validators
Aerospike.logger.debug { "Cluster features: #{@cluster.features.get.to_a}" }
validators = []
# guard against unsupported particle types
unsupported_particle_types = []
unsupported_particle_types << Aerospike::ParticleType::DOUBLE unless supports_feature?(Aerospike::Features::FLOAT)
unsupported_particle_types << Aerospike::ParticleType::GEOJSON unless supports_feature?(Aerospike::Features::GEO)
validators << UnsupportedParticleTypeValidator.new(*unsupported_particle_types) unless unsupported_particle_types.empty?
@command_validators = validators
end
def validate_command(command)
return unless @command_validators
@command_validators.each do |validator|
validator.call(command)
end
end
def execute_command(command)
validate_command(command)
command.execute
end
def execute_batch_index_commands(policy, keys)
if @cluster.nodes.empty?
raise Aerospike::Exceptions::Aerospike.new(Aerospike::ResultCode::SERVER_NOT_AVAILABLE, "Executing Batch Index command failed because cluster is empty.")
end
batch_nodes = BatchIndexNode.generate_list(@cluster, policy.replica, keys)
threads = []
batch_nodes.each do |batch|
threads << Thread.new do
command = yield batch.node, batch
execute_command(command)
end
end