Module: Meangirls

Defined in:
lib/meangirls.rb,
lib/meangirls/version.rb

Defined Under Namespace

Classes: CRDT, Counter, DeleteNotAllowed, GCounter, LWWSet, ORSet, ReinsertNotAllowed, Set, TwoPhaseSet

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.node ⇒ Object

The default node name.



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

def node
  @node ||= Socket.gethostname
end

.node=(node) ⇒ Object

Set the default node name.



37
38
39
 
# File 'lib/meangirls.rb', line 37

def node=(node)
  @node = node
end

.parse(s) ⇒ Object

Transforms a JSON data structure into a CRDT datatype.



14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/meangirls.rb', line 14

def parse(s)
  case s['type']
  when '2p-set'
    TwoPhaseSet.new s
  when 'lww-set'
    LWWSet.new s
  when 'or-set'
    ORSet.new s
  when 'g-counter'
    GCounter.new s
  else
    raise ArgumentError, "unknown type #{s['type']}"
  end
end

.tag ⇒ Object

Return a pseudounique tag.



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

def tag
  SecureRandom.urlsafe_base64
end

.timestamp ⇒ Object

An ISO8601 time as close to the current time as possible, with the additional constraint that successive calls to this method will return monotonically increasing values.

TODO: fold counter inside of time fraction



53
54
55
56
 
# File 'lib/meangirls.rb', line 53

def timestamp
  @i ||= 0
  "#{Time.now.utc.iso8601}.#{@i += 1}"
end