Class: Oplogjam::Update

Inherits:
Object
  • Object
show all
Defined in:
lib/oplogjam/update.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(h, ts, ns, o2, o) ⇒ Update

Returns a new instance of Update.



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# File 'lib/oplogjam/update.rb', line 21

def initialize(h, ts, ns, o2, o)
  @h = Integer(h)
  @ts = Oplogjam::Timestamp(ts)
  @ns = String(ns)
  @o2 = Oplogjam::Document(o2)
  @o = Oplogjam::Document(o)
end

Instance Attribute Details

#h ⇒ Object (readonly) Also known as: id

Returns the value of attribute h.



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# File 'lib/oplogjam/update.rb', line 7

def h
  @h
end

#ns ⇒ Object (readonly) Also known as: namespace

Returns the value of attribute ns.



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# File 'lib/oplogjam/update.rb', line 7

def ns
  @ns
end

#o ⇒ Object (readonly) Also known as: update

Returns the value of attribute o.



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# File 'lib/oplogjam/update.rb', line 7

def o
  @o
end

#o2 ⇒ Object (readonly) Also known as: query

Returns the value of attribute o2.



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# File 'lib/oplogjam/update.rb', line 7

def o2
  @o2
end

#ts ⇒ Object (readonly)

Returns the value of attribute ts.



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# File 'lib/oplogjam/update.rb', line 7

def ts
  @ts
end

Class Method Details

.from(bson) ⇒ Object 



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# File 'lib/oplogjam/update.rb', line 9

def self.from(bson)
  h = bson.fetch(H)
  ts = bson.fetch(TS)
  ns = bson.fetch(NS)
  o2 = bson.fetch(O2)
  o = bson.fetch(O)

  new(h, ts, ns, o2, o)
rescue KeyError => e
  raise InvalidUpdate, "missing field: #{e}"
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/oplogjam/update.rb', line 38

def ==(other)
  return false unless other.is_a?(Update)

  id == other.id
end

#apply(mapping) ⇒ Object 



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# File 'lib/oplogjam/update.rb', line 44

def apply(mapping)
  table = mapping[namespace]
  return unless table

  row_id = query.fetch(ID).to_json

  table
    .where(id: row_id, deleted_at: nil)
    .update(document: jsonb_update, updated_at: Time.now.utc)
end

#timestamp ⇒ Object 



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# File 'lib/oplogjam/update.rb', line 34

def timestamp
  Time.at(ts.seconds, ts.increment)
end