Class: CustomRedis

Inherits:
Object
  • Object
show all
Defined in:
lib/custom_redis.rb,
lib/custom_redis/version.rb

Constant Summary collapse

VERSION = 
"0.1.4"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host = 'localhost', port = 6379) ⇒ CustomRedis

Returns a new instance of CustomRedis.



14
15
16
17
18
19
 
# File 'lib/custom_redis.rb', line 14

def initialize(host = 'localhost', port = 6379)
  @host = host
  @port = port

  $custom_redis = Redis.new(:host => @host, :port => @port)
end

Instance Attribute Details

#host ⇒ Object

Returns the value of attribute host.



6
7
8
 
# File 'lib/custom_redis.rb', line 6

def host
  @host
end

#port ⇒ Object

Returns the value of attribute port.



7
8
9
 
# File 'lib/custom_redis.rb', line 7

def port
  @port
end

#redis ⇒ Object (readonly)

Returns the value of attribute redis.



8
9
10
 
# File 'lib/custom_redis.rb', line 8

def redis
  @redis
end

Class Method Details

.cr_delete(object, custom_key) ⇒ Object

It delete in Redis a key-value as { :“model:id:method1_method2_method3” => value }



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

def self.cr_delete(object, custom_key)
  $custom_redis.del(my_redis_key(object, custom_key.to_s))
end

.cr_eval(object, type = :string, *methods) ⇒ Object

It evals if a key-value exists in Redis Server, being inserted if It doesn’t exist It returns the value after executing all methods TODO: Allow to send a method which several params as a hash on *methods



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
 
# File 'lib/custom_redis.rb', line 49

def self.cr_eval(object, type = :string, *methods)

  @methods_key = methods.join('_')

  cr_evalType(type)

  case @type
    when :string
      get_method = :get
      set_method = :set
    when :set
      get_method = :smembers
      set_method = :sadd
    when :hash
      get_method = :hash
      set_method = :set
  end

  # It returns a hash with a key or an array of keys
  if (value = cr_get(object, @methods_key, get_method)) && value.present?
    value
  else
    if methods.present?
      value = object.public_send(methods[0])
      for i in 1..methods.size-1
        value = value.public_send(methods[i])
      end
    end

    # Iterate each element of a possible result for all methods of cr_eval and execute the each block of methods
    if @type == :set
      cr_iterate_set(object, value, set_method)
    else
      cr_set(object, value, set_method)
    end
  end
end

.cr_flush(object, methods) ⇒ Object 



37
38
39
40
41
 
# File 'lib/custom_redis.rb', line 37

def self.cr_flush(object, methods)
  @methods_key = methods.join('_')
  list = $custom_redis.keys(my_redis_key(object,@methods_key))
  cr_dlist(list)
end

.cr_pflush(pattern) ⇒ Object

It delete all Redis key-values which match with the search



32
33
34
35
 
# File 'lib/custom_redis.rb', line 32

def self.cr_pflush(pattern)
  list = $custom_redis.keys(pattern)
  cr_dlist(list)
end

.my_redis_key(model, string) ⇒ Object

It returns a string like model:id:method1_method2_method3



22
23
24
 
# File 'lib/custom_redis.rb', line 22

def self.my_redis_key(model, string)
  "#{model.class.to_s.downcase}:#{model.id.to_s}:#{string}"
end