Class: DCell::Registry::ZkAdapter::NodeRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/dcell/registries/zk_adapter.rb

Instance Method Summary collapse

Constructor Details

#initialize(zk, base_path) ⇒ NodeRegistry

Returns a new instance of NodeRegistry.



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# File 'lib/dcell/registries/zk_adapter.rb', line 52

def initialize(zk, base_path)
  @zk, @base_path = zk, "#{base_path}/nodes"
  @zk.mkdir_p @base_path
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/dcell/registries/zk_adapter.rb', line 74

def clear
  @zk.rm_rf @base_path
  @zk.mkdir_p @base_path
end

#get(node_id) ⇒ Object 



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# File 'lib/dcell/registries/zk_adapter.rb', line 57

def get(node_id)
  result, _ = @zk.get("#{@base_path}/#{node_id}")
  result
rescue ZK::Exceptions::NoNode
end

#nodes ⇒ Object 



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# File 'lib/dcell/registries/zk_adapter.rb', line 70

def nodes
  @zk.children @base_path
end

#set(node_id, addr) ⇒ Object 



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# File 'lib/dcell/registries/zk_adapter.rb', line 63

def set(node_id, addr)
  path = "#{@base_path}/#{node_id}"
  @zk.set path, addr
rescue ZK::Exceptions::NoNode
  @zk.create path, addr
end