Class: LaunchDarkly::InMemoryFeatureStore

Inherits:
Object
  • Object
show all
Includes:
LaunchDarkly::Interfaces::FeatureStore
Defined in:
lib/ldclient-rb/in_memory_store.rb

Overview

Default implementation of the LaunchDarkly client's feature store, using an in-memory cache. This object holds feature flags and related data received from LaunchDarkly. Database-backed implementations are available in Integrations.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ InMemoryFeatureStore

Returns a new instance of InMemoryFeatureStore.



13
14
15
16
17
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 13

def initialize
  @items = Hash.new
  @lock = Concurrent::ReadWriteLock.new
  @initialized = Concurrent::AtomicBoolean.new(false)
end

Instance Method Details

#all(kind) ⇒ Object 



31
32
33
34
35
36
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 31

def all(kind)
  @lock.with_read_lock do
    coll = @items[kind]
    (coll.nil? ? Hash.new : coll).select { |_k, f| not f[:deleted] }
  end
end

#delete(kind, key, version) ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 38

def delete(kind, key, version)
  @lock.with_write_lock do
    coll = @items[kind]
    if coll.nil?
      coll = Hash.new
      @items[kind] = coll
    end
    old = coll[key.to_sym]

    if old.nil? || old[:version] < version
      coll[key.to_sym] = { deleted: true, version: version }
    end
  end
end

#get(kind, key) ⇒ Object 



23
24
25
26
27
28
29
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 23

def get(kind, key)
  @lock.with_read_lock do
    coll = @items[kind]
    f = coll.nil? ? nil : coll[key.to_sym]
    (f.nil? || f[:deleted]) ? nil : f
  end
end

#init(all_data) ⇒ Object 



53
54
55
56
57
58
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 53

def init(all_data)
  @lock.with_write_lock do
    @items.replace(all_data)
    @initialized.make_true
  end
end

#initialized? ⇒ Boolean

Returns:

  • (Boolean) 


75
76
77
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 75

def initialized?
  @initialized.value
end

#monitoring_enabled? ⇒ Boolean

Returns:

  • (Boolean) 


19
20
21
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 19

def monitoring_enabled?
  false
end

#stop ⇒ Object 



79
80
81
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 79

def stop
  # nothing to do
end

#upsert(kind, item) ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/ldclient-rb/in_memory_store.rb', line 60

def upsert(kind, item)
  @lock.with_write_lock do
    coll = @items[kind]
    if coll.nil?
      coll = Hash.new
      @items[kind] = coll
    end
    old = coll[item[:key].to_sym]

    if old.nil? || old[:version] < item[:version]
      coll[item[:key].to_sym] = item
    end
  end
end