Class: Flipper::Adapters::Failover

Inherits:
Object
  • Object
show all
Includes:
Flipper::Adapter
Defined in:
lib/flipper/adapters/failover.rb

Instance Method Summary collapse

Methods included from Flipper::Adapter

#default_config, #export, #import, included, #name, #read_only?

Constructor Details

#initialize(primary, secondary, options = {}) ⇒ Failover

Public: Build a new failover instance.

primary - The primary flipper adapter. secondary - The secondary flipper adapter which services reads when

the primary adapter is unavailable.

options - Hash of options:

:dual_write - Boolean, whether to update secondary when
              primary is updated
:errors - Array of exception types for which to failover



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# File 'lib/flipper/adapters/failover.rb', line 16

def initialize(primary, secondary, options = {})
  @primary = primary
  @secondary = secondary

  @dual_write = options.fetch(:dual_write, false)
  @errors = options.fetch(:errors, [ StandardError ])
end

Instance Method Details

#add(feature) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 48

def add(feature)
  @primary.add(feature).tap do
    @secondary.add(feature) if @dual_write
  end
end

#clear(feature) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 60

def clear(feature)
  @primary.clear(feature).tap do
    @secondary.clear(feature) if @dual_write
  end
end

#disable(feature, gate, thing) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 72

def disable(feature, gate, thing)
  @primary.disable(feature, gate, thing).tap do
    @secondary.disable(feature, gate, thing) if @dual_write
  end
end

#enable(feature, gate, thing) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 66

def enable(feature, gate, thing)
  @primary.enable(feature, gate, thing).tap do
    @secondary.enable(feature, gate, thing) if @dual_write
  end
end

#features ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 24

def features
  @primary.features
rescue *@errors
  @secondary.features
end

#get(feature) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 30

def get(feature)
  @primary.get(feature)
rescue *@errors
  @secondary.get(feature)
end

#get_all ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 42

def get_all
  @primary.get_all
rescue *@errors
  @secondary.get_all
end

#get_multi(features) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 36

def get_multi(features)
  @primary.get_multi(features)
rescue *@errors
  @secondary.get_multi(features)
end

#remove(feature) ⇒ Object 



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# File 'lib/flipper/adapters/failover.rb', line 54

def remove(feature)
  @primary.remove(feature).tap do
    @secondary.remove(feature) if @dual_write
  end
end