Class: Dynamosaurus::DynamoBase

Inherits:
Object
  • Object
show all
Defined in:
lib/dynamosaurus/dynamo_base.rb,
lib/dynamosaurus/dynamo_class.rb

Constant Summary collapse

TYPES = 
{
  :string => :s,
  :number => :n
}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ DynamoBase

Returns a new instance of DynamoBase.



14
15
16
17
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 14

def initialize params
  data = params[:data] if params[:data]
  @data = Dynamosaurus::DynamoBase.res2hash(data)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *params) ⇒ Object 



47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 47

def method_missing(name, *params)
  name = name.to_s[0..-2] if name.to_s[-1] == "="
  if exist? and @data.has_key?(name.to_s)
    if params.empty?
      @data[name.to_s]
    else
      @data[name.to_s] = params[0]
    end
  else
    super
  end
end

Class Method Details

.add(key = [], attribute_nums = {}, options = {}) ⇒ Object 



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
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 625

def add key=[], attribute_nums={}, options={}
  Dynamosaurus.logger << "update"

  attribute_updates = {}
  attribute_nums.each do |k, v|
    attribute_updates[k.to_s] = {
      :value => v,
      :action => "ADD"
    }
  end

  keys = {
    hash_key.to_sym => key.is_a?(Array) ? key[0] : key
  }
  keys[range_key.to_sym] = key[1]  if has_renge

  query ={
    :table_name => table_name,
    :key => keys,
    :attribute_updates => attribute_updates
  }
  query = query.merge(options)
  res = dynamo_db.update_item(query)

end

.all ⇒ Object 



542
543
544
545
546
547
548
549
550
551
552
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 542

def all
  Dynamosaurus.logger << "all #{table_name}"
  res = dynamo_db.scan({
    :table_name => table_name,
  })
  if res.items
    res.items.map{|item|
      new :data => item
    }
  end
end

.all_models ⇒ Object 



4
5
6
7
8
9
10
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 4

def all_models
  subclasses = []
  ObjectSpace.each_object(Dynamosaurus::DynamoBase.singleton_class) do |k|
    subclasses << k if k.superclass == Dynamosaurus::DynamoBase
  end
  subclasses
end

.attribute_definitions ⇒ Object 



108
109
110
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 108

def attribute_definitions
  @attribute_definitions
end

.batch_get_item(keys) ⇒ Object 



509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 509

def batch_get_item keys
  return nil if keys.nil? or keys.empty?
  Dynamosaurus.logger << "batch_get_item #{table_name} #{keys}"
  _keys = conv_key_array(keys)

  res = dynamo_db.batch_get_item(
    :request_items => {
      table_name => {
        :keys => _keys
      }
    })

  if res.responses[table_name]
    return res.responses[table_name].map{|item|
      new :data => item
    }
  end
  nil
end

.batch_write_item(put_items = [], delete_items = []) ⇒ Object 



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
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 576

def batch_write_item put_items = [], delete_items = []
  return nil if (put_items.nil? or put_items.empty?) and (delete_items.nil? or delete_items.empty?)
  Dynamosaurus.logger << "batch_write_item #{table_name}"

  requests = []
  if put_items and put_items.size > 0
    put_items.each do |item|
      if item["hash"] or item["num_hash"]
        new_item = put_data(item["hash"], item["num_hash"])
      else
        new_item = item.merge({:updated_at => Time.now.to_i})
      end
      requests << {
        put_request: {
          item: new_item
        }
      }
    end
  end

  if delete_items and delete_items.size > 0
    conv_key_array(delete_items).map{|key|
      requests << {
        delete_request: {
          key: key
        }
      }
    }
  end

  res = dynamo_db.batch_write_item(
    request_items: {
      table_name => requests
    },
    return_consumed_capacity: "TOTAL"
  )
  res
end

.conv_key_array(keys) ⇒ Object 



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
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 481

def conv_key_array keys
  unless has_renge
    keys.map{|_key| {hash_key.to_s => _key.to_s } }
  else
    if keys.is_a?(Array)
      if keys[0].is_a?(Array)
        keys.map{|key| get_orderd_key_from_array(key)}
      elsif keys[0].is_a?(Hash)
        keys.map{|key| get_orderd_key_from_hash(key)}
      else
        [get_orderd_key_from_array(keys)]
      end
    else
      _keys = []
      ((p_key = keys[hash_key]).is_a?(Array) ? p_key : [p_key]).each do |key1|
        if (r_key = keys[range_key]).is_a?(Array)
          r_key.each do |key2|
            _keys << get_orderd_key(key1, key2)
          end
        else
          _keys << get_orderd_key(key1, r_key)
        end
      end
      _keys
    end
  end
end

.create_table(option = {}) ⇒ Object 



22
23
24
25
26
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 22

def create_table option={}
  schem = schema.merge(option)
  Dynamosaurus.logger << "create table #{schem}"
  dynamo_db.create_table(schem)
end

.create_tables ⇒ Object 



12
13
14
15
16
17
18
19
20
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 12

def create_tables
  tables = dynamo_db.list_tables.table_names

  Dynamosaurus::DynamoBase.all_models.each do |model_class|
    if tables.index(model_class.table_name).nil?
      model_class.create_table
    end
  end
end

.delete_item(value) ⇒ Object 



651
652
653
654
655
656
657
658
659
660
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 651

def delete_item value
  return nil if value.nil?

  old_item = dynamo_db.delete_item(
    :table_name => table_name,
    :key => get_item_key(value),
    :return_values => "ALL_OLD"
  )
  new :data => old_item.attributes
end

.dynamo_db ⇒ Object 



42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 42

def dynamo_db
  return @dynamo_db if @dynamo_db
  if Aws::config.empty?
    @dynamo_db = Aws::DynamoDB::Client.new({
                                            endpoint: 'http://localhost:8000',
                                            region: 'us-west-2',
                                            access_key_id: 'fakeMyKeyId',
                                            secret_access_key: 'fakeSecretAccessKey'
                                           })
  else
    @dynamo_db = Aws::DynamoDB::Client.new
  end
end

.first ⇒ Object 



529
530
531
532
533
534
535
536
537
538
539
540
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 529

def first
  Dynamosaurus.logger << "first #{table_name}"
  res = dynamo_db.scan({
    :table_name => table_name,
    :limit => 1
  })
  if res.items && res.count > 0
    new :data => res.items[0]
  else
    nil
  end
end

.get(value, option = {}) ⇒ Object

public method



441
442
443
444
445
446
447
448
449
450
451
452
453
454
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 441

def get value, option={}
  if value.is_a? Hash
    if value[:index]
      get_from_local_index value, option
    elsif option[:noindex]
      option.delete(:noindex)
      query_without_index value, option
    else
      get_from_index value, option
    end
  else
    get_from_key value, option
  end
end

.get_from_index(hash, option = {}) ⇒ Object 



323
324
325
326
327
328
329
330
331
332
333
334
335
336
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 323

def get_from_index hash, option={}
  if index = get_index(hash)
    keys = {}

    index[:keys].each do |key|
      keys[key] = {
        :comparison_operator => "EQ",
        :attribute_value_list => [hash[key]]
      }
    end
    Dynamosaurus.logger << "query index #{table_name} #{keys}"
    query keys, index[:index_name], option
  end
end

.get_from_key(value, option = {}) ⇒ Object 



306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 306

def get_from_key value, option={}
  return nil if value.nil?

  item_key = get_item_key(value)
  Dynamosaurus.logger << "get_item #{table_name} #{item_key}"

  res = dynamo_db.get_item(
    :table_name => table_name,
    :key => item_key
  )
  if res.item
    new :data => res.item
  else
    nil
  end
end

.get_from_local_index(hash, option = {}) ⇒ Object 



338
339
340
341
342
343
344
345
346
347
348
349
350
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 338

def get_from_local_index hash, option={}
  if index = hash.delete(:index)
    keys = {}
    hash.each do |k, v|
      keys[k] = {
        :comparison_operator => "EQ",
        :attribute_value_list => [ v.to_s ]
      }
    end
    Dynamosaurus.logger << "query local_index #{table_name} #{keys}"
    query keys, index, option
  end
end

.get_global_index(name) ⇒ Object 



226
227
228
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 226

def get_global_index name
  @global_index[name]
end

.get_global_indexes ⇒ Object 



222
223
224
225
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 222

def get_global_indexes
  (@global_index) ? @global_index : {}

end

.get_index(hash) ⇒ Object 



251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 251

def get_index hash
  get_indexes.each{|key, value|
    if hash.size == 1 && hash.keys.first == value.first
      return {
        :index_name => key,
        :keys => [value[0]]
      }
    else hash.size == 2 && hash.keys.sort == [value[0], value[2]].sort
      return {
        :index_name => key,
        :keys => [value[0], value[2]]
      }
    end
  }
  nil
end

.get_indexes ⇒ Object 



247
248
249
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 247

def get_indexes
  get_secondary_indexes.merge(get_global_indexes)
end

.get_item_key(value) ⇒ Object 



293
294
295
296
297
298
299
300
301
302
303
304
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 293

def get_item_key value
  if value.is_a? Array
    {
      hash_key => value[0].to_s,
      range_key => value[1].to_s,
    }
  else
    {
      hash_key => value.to_s,
    }
  end
end

.get_key ⇒ Object 



65
66
67
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 65

def get_key
 @key
end

.get_orderd_key(value1, value2) ⇒ Object 



474
475
476
477
478
479
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 474

def get_orderd_key value1, value2
  {
    hash_key.to_s => value1,
      range_key.to_s => value2
  }
end

.get_orderd_key_from_array(array) ⇒ Object 



470
471
472
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 470

def get_orderd_key_from_array array
  get_orderd_key(array[0], array[1])
end

.get_orderd_key_from_hash(hash) ⇒ Object 



465
466
467
468
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 465

def get_orderd_key_from_hash hash
  get_orderd_key( (hash[hash_key.to_sym] || hash[hash_key.to_s]),
                 (hash[range_key.to_sym] || hash[range_key.to_s]))
end

.get_secondary_index(name) ⇒ Object 



243
244
245
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 243

def get_secondary_index name
  @secondary_index[name]
end

.get_secondary_indexes ⇒ Object 



240
241
242
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 240

def get_secondary_indexes
  @secondary_index ? @secondary_index : {}
end

.getOne(value, option = {}) ⇒ Object 



456
457
458
459
460
461
462
463
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 456

def getOne value, option={}
  data = get(value, option)
  if data.nil? || data.empty?
    nil
  else
    data.first
  end
end

.global_index(index_name, key, key_type, range_key_name = nil, range_key_type = nil) ⇒ Object

indexes



211
212
213
214
215
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 211

def global_index index_name, key, key_type, range_key_name=nil, range_key_type=nil
  @global_index = {} if @global_index.nil?
  @global_index[index_name] = [key, Dynamosaurus::DynamoBase::TYPES[key_type]]
  @global_index[index_name] << range_key_name <<  Dynamosaurus::DynamoBase::TYPES[range_key_type] if range_key_name
end

.global_index_key_schema(index) ⇒ Object 



159
160
161
162
163
164
165
166
167
168
169
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 159

def global_index_key_schema index
  key_schema = [{
    :key_type => "HASH",
    :attribute_name => index[1][0]
  }]
  key_schema << {
        :key_type => "RANGE",
        :attribute_name => index[1][2]
      } if index[1].size == 4
  key_schema
end

.global_index_option(index_name, option) ⇒ Object 



217
218
219
220
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 217

def global_index_option index_name, option
  @global_index_option = {} if @global_index_option.nil?
  @global_index_option[index_name] = option
end

.global_index_schemas ⇒ Object 



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 138

def global_index_schemas
  @global_index_option = {} if @global_index_option.nil?
  schema = []
  get_global_indexes.each do |index|
    option = @global_index_option[index[0]] || {}

    schema << {
      :index_name => index[0],
      :key_schema => global_index_key_schema(index),
      :projection => {
        :projection_type => (option[:projection_type] || "KEYS_ONLY"),
      },
      :provisioned_throughput => {
        :read_capacity_units => 10,
        :write_capacity_units => 10
      }
    }
  end
  schema
end

.global_indexes_attribute_definitions ⇒ Object 



177
178
179
180
181
182
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 177

def global_indexes_attribute_definitions
  get_global_indexes.each do |index|
    push_attribute_definitions(index[1][0].to_s, index[1][1].to_s.upcase)
    push_attribute_definitions(index[1][2].to_s, index[1][3].to_s.upcase) if index[1].size == 4
  end
end

.has_renge ⇒ Object 



69
70
71
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 69

def has_renge
  @key.size == 4
end

.hash_key ⇒ Object 



73
74
75
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 73

def hash_key
  @key[0]
end

.key(k, type, range_key_name = nil, range_key_type = nil) ⇒ Object 



60
61
62
63
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 60

def key k, type, range_key_name=nil, range_key_type=nil
  @key = [k, Dynamosaurus::DynamoBase::TYPES[type]]
  @key << range_key_name << Dynamosaurus::DynamoBase::TYPES[range_key_type] if range_key_name
end

.key_schema ⇒ Object 



81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 81

def key_schema
  key = [{
    :key_type => "HASH",
    :attribute_name => hash_key.to_s
  }]
  key << {
    :key_type => "RANGE",
    :attribute_name => range_key.to_s
  } if has_renge
  key
end

.keyQuery(expression, pkey, data) ⇒ Object 



386
387
388
389
390
391
392
393
394
395
396
397
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 386

def keyQuery(expression, pkey, data) 
  params = {
    table_name: table_name,
    key_condition_expression: expression,
    expression_attribute_names: {
      "#pkey" => pkey,
    },
    expression_attribute_values: {
      ":pkey_value" => data,
    }
  }
end

.local_secondary_attribute_definitions ⇒ Object 



171
172
173
174
175
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 171

def local_secondary_attribute_definitions
  get_secondary_indexes.each do |index_key, index_value|
    push_attribute_definitions(index_value[2].to_s, index_value[3].to_s.upcase)
  end
end

.local_secondary_schemas ⇒ Object 



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
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 112

def local_secondary_schemas
  @secondary_index_option = {} if @secondary_index_option.nil?
  schema = []
  get_secondary_indexes.each do |index_key, index_value|
    option = @secondary_index_option[index_key] || {}
    schema << {
      index_name: index_key,
      key_schema: [],
      projection: {
        :projection_type => (option[:projection_type] || "KEYS_ONLY"),
      },
      key_schema: [
        {
          key_type: "HASH",
          attribute_name: index_value[0]
        },
        {
          key_type: "RANGE",
          attribute_name: index_value[2]
        }
      ]
    }
  end
  schema
end

.push_attribute_definitions(name, type) ⇒ Object

schema



94
95
96
97
98
99
100
101
102
103
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 94

def push_attribute_definitions name, type
  if @attribute_definitions.nil?
    @attribute_definitions = []
    @attribute_names = []
  end
  if @attribute_names.index(name).nil?
    @attribute_definitions << {:attribute_name => name, :attribute_type => type}
    @attribute_names << name
  end
end

.put(hash, num_hash = {}, return_values = nil) ⇒ Object 



554
555
556
557
558
559
560
561
562
563
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 554

def put hash, num_hash={}, return_values=nil
  new_hash = put_data(hash, num_hash)

  params = {
    :table_name => table_name,
    :item => new_hash,
    :return_values => return_values || "NONE"
  }
  res = dynamo_db.put_item(params)
end

.put_data(hash, num_hash = {}) ⇒ Object 



565
566
567
568
569
570
571
572
573
574
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 565

def put_data hash, num_hash={}
  new_hash = {}
  hash.each{|key, value|
    new_hash[key] = value unless value.nil?
  }
  num_hash.merge({:updated_at => Time.now.to_i}).each{|key, value|
    new_hash[key] = value.to_i unless value.nil?
  } if num_hash
  new_hash
end

.query(keys, index = nil, option = {}) ⇒ Object 



414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 414

def query keys, index=nil, option={}
  query = {
    :table_name => table_name
  }
  unless keys.nil? || keys.empty?
    query[:key_conditions] = keys
  end

  if index
    query[:index_name] = index
  end

  query.merge!(option)
  res = dynamo_db.query(query)
  if query[:select] == "COUNT"
    res[:count]
  else
    if res.items
      return res.items.map{|item|
       new :data => item
      }
    end
  end
end

.query_of_all(params, offset_key, limit = 20, scan_index_forward = true) ⇒ Object 



352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 352

def query_of_all(params, offset_key, limit = 20, scan_index_forward = true)
  params[:limit] = limit + 1
  params[:scan_index_forward] = scan_index_forward;
  
  p params
  res = dynamo_db.query(params)

  items = []
  
  if res.items
    items = res.items.map{|item|
      new :data => item
    }
  end
  
  ret[table_name] = items
  ret[:count] = [item.count, limit].min
  
  if (res[:count] > limit) 
    ret[:next] = res.items[limit][offset_key]
  end
end

.query_without_index(value, option) ⇒ Object

query



280
281
282
283
284
285
286
287
288
289
290
291
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 280

def query_without_index value, option
  keys = {}

  value.each_with_index{|(k,v), i|
    keys[k] = {
      :comparison_operator => "EQ",
      :attribute_value_list => [v.to_s]
    }
  }
  Dynamosaurus.logger << "query index #{table_name} #{keys}"
  query keys, nil, option
end

.range_key ⇒ Object 



77
78
79
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 77

def range_key
  @key[2]
end

.rangeGetList(data, limit = 20, scan_index_forward = true, options = {}) ⇒ Object 



375
376
377
378
379
380
381
382
383
384
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 375

def rangeGetList(data, limit = 20, scan_index_forward = true, options={})
  pkey = hash_key
  rkey = range_key
  params = data.is_a?(Array) ?
    (scan_index_forward ? 
     rangeKeyQuery("#pkey = :pkey_value and #rkey >= :rkey_value", [pkey, rkey], data) :
     rangeKeyQuery("#pkey = :pkey_value and #rkey <= :rkey_value", [pkey, rkey], data)) :
    keyQuery("#pkey = :pkey_value", pkey, data)
  res =  query_of_all(params.merge(options), rkey, limit, scan_index_forward)
end

.rangeKeyQuery(expression, keys, data) ⇒ Object 



399
400
401
402
403
404
405
406
407
408
409
410
411
412
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 399

def rangeKeyQuery(expression, keys, data) 
  params = {
    table_name: table_name,
    key_condition_expression: expression,
    expression_attribute_names:{
      "#pkey" => hash_key,
      "#rkey" => range_key,
    },
    expression_attribute_values: {
      ":pkey_value" => data[0],
      ":rkey_value" => data[1],
    }
  }
end

.res2hash(hash) ⇒ Object 



273
274
275
276
277
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 273

def res2hash hash
  new_hash = {}
  return new_hash if hash.nil?
  hash
end

.save(hash, num_hash = {}, return_values = nil) ⇒ Object 



615
616
617
618
619
620
621
622
623
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 615

def save hash, num_hash={}, return_values=nil
  put(hash, num_hash, return_values)

  if has_renge
    get([hash[hash_key], hash[range_key]])
  else
    get(hash[hash_key])
  end
end

.schema ⇒ Object 



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/dynamosaurus/dynamo_class.rb', line 184

def schema
  set_init_attribute_definitions

  @schema = {
    table_name: table_name,
    key_schema: key_schema,
    provisioned_throughput: {
      read_capacity_units: 10,
      write_capacity_units: 10
    }
  }

  unless get_global_indexes.empty?
    @schema[:global_secondary_indexes] = global_index_schemas
    global_indexes_attribute_definitions
  end
  unless get_secondary_indexes.empty?
    @schema[:local_secondary_indexes] = local_secondary_schemas
    local_secondary_attribute_definitions
  end
  @schema[:attribute_definitions] = attribute_definitions

  @schema
end

.secondary_index(index_name, range_key_name = nil, range_key_type = nil) ⇒ Object 



230
231
232
233
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 230

def secondary_index index_name, range_key_name=nil, range_key_type=nil
  @secondary_index = {} if @secondary_index.nil?
  @secondary_index[index_name.to_sym] = [@key[0], @key[1], range_key_name, Dynamosaurus::DynamoBase::TYPES[range_key_type]] if range_key_name
end

.secondary_index_option(index_name, option) ⇒ Object 



235
236
237
238
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 235

def secondary_index_option index_name, option
  @secondary_index_option = {} if @secondary_index_option.nil?
  @secondary_index_option[index_name] = option
end

.set_init_attribute_definitions ⇒ Object 



104
105
106
107
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 104

def set_init_attribute_definitions
  push_attribute_definitions(hash_key.to_s,  get_key[1].to_s.upcase)
  push_attribute_definitions(range_key.to_s, get_key[3].to_s.upcase) if has_renge
end

.table(options = {}) ⇒ Object 



56
57
58
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 56

def table options = {}
  @table ||= options
end

.table_name ⇒ Object 



34
35
36
37
38
39
40
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 34

def table_name
  if @table && @table.has_key?(:name) && !@table[:name].empty?
    @table[:name].to_s
  else
    (@table_prefix || name.downcase.split("::").last) + (ENV['DYNAMODB_SUFFIX'] || "_local")
  end
end

.table_prefix(name) ⇒ Object

end of indexes



269
270
271
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 269

def table_prefix name
  @table_prefix = name
end

.tables ⇒ Object 



28
29
30
31
32
 
# File 'lib/dynamosaurus/dynamo_class.rb', line 28

def tables
  Dynamosaurus::DynamoBase.all_models.map do |model_class|
    model_class.table_name
  end
end

Instance Method Details

#[](key) ⇒ Object 



23
24
25
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 23

def [] key
  @data[key.to_s]
end

#[]=(key, value) ⇒ Object 



27
28
29
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 27

def []=(key,value)
  @data[key.to_s] = value
end

#add(attribute_nums = {}, options = {}) ⇒ Object 



100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 100

def add attribute_nums={}, options={}
  if self.class.has_renge
    key_value = [@data[key[0].to_s], @data[key[2].to_s]]
  else
    key_value = @data[key[0].to_s]
  end
  attribute_nums.each do |k, v|
    @data[k.to_s] = @data[k.to_s] + v.to_i
  end
  self.class.add(key_value, attribute_nums, options)
end

#attr_delete(attributes = []) ⇒ Object 



131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 131

def attr_delete attributes=[]
  Dynamosaurus.logger << "delete"

  attribute_updates = {}
  attributes.each do |k|
    attribute_updates[k.to_s] = {
      :action => "DELETE"
    }
    @data.delete(k.to_s)
  end

  res = dynamo_db.update_item(
    :table_name => self.class.table_name,
    :key => keys,
    :attribute_updates => attribute_updates
  )
end

#data ⇒ Object 



31
32
33
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 31

def data
  @data
end

#delete ⇒ Object 



149
150
151
152
153
154
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 149

def delete
  dynamo_db.delete_item(
    :table_name => self.class.table_name,
    :key => keys
  )
end

#dynamo_db ⇒ Object 



10
11
12
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 10

def dynamo_db
  self.class.dynamo_db
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 39

def empty?
  @data.empty?
end

#exist? ⇒ Boolean

Returns:

  • (Boolean) 


35
36
37
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 35

def exist?
  ! @data.empty?
end

#key ⇒ Object 



60
61
62
63
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 60

def key
  return @key if @key
  @key = self.class.get_key
end

#keys ⇒ Object 



65
66
67
68
69
70
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 65

def keys
  item_key = {}
  item_key[key[0].to_sym] = @data[key[0].to_s]
  item_key[key[2].to_sym] = @data[key[2].to_s] if key.size == 4
  item_key
end

#save ⇒ Object 



112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 112

def save
  attribute_updates = {}
  @data.each do |k, v|
    if key.index(k.to_sym).nil?
      attribute_updates[k.to_s] = {
        :value => v,
        :action => "PUT"
      }
    end
  end

  query = {
    :table_name => self.class.table_name,
    :key => keys,
    :attribute_updates => attribute_updates
  }
  res = dynamo_db.update_item(query)
end

#table_name ⇒ Object 



19
20
21
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 19

def table_name
  self.class.table_name
end

#try(name) ⇒ Object 



43
44
45
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 43

def try name
  @data[name.to_s]
end

#update(attributes = {}, attribute_nums = {}, options = {}) ⇒ Object 



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
 
# File 'lib/dynamosaurus/dynamo_base.rb', line 72

def update attributes={}, attribute_nums={}, options={}
  Dynamosaurus.logger << "update"

  attribute_updates = {}
  attributes.each do |k, v|
    @data[k.to_s] = v
    attribute_updates[k.to_s] = {
      :value => v,
      :action => "PUT"
    }
  end

  attribute_nums.each do |k, v|
    @data[k.to_s] = v.to_i
    attribute_updates[k.to_s] = {
      :value => v.to_i,
      :action => "PUT"
    }
  end

  query = {
    :table_name => self.class.table_name,
    :key => keys,
    :attribute_updates => attribute_updates
  }.merge(options)
  res = dynamo_db.update_item(query)
end