Class: InstructureRegistrar::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/instructure_registrar/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Client

Returns a new instance of Client.



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# File 'lib/instructure_registrar/client.rb', line 8

def initialize
  @server_available = healthcheck
end

Instance Attribute Details

#server_available ⇒ Object (readonly)

Returns the value of attribute server_available.



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# File 'lib/instructure_registrar/client.rb', line 6

def server_available
  @server_available
end

Instance Method Details

#healthcheck ⇒ Object 



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# File 'lib/instructure_registrar/client.rb', line 12

def healthcheck
  client.version
rescue
  p "WARNING: etcd server unavailable at #{InstructureRegistrar.config.registry_host}:#{InstructureRegistrar.config.registry_port}"
  false
end

#lookup(service_name) ⇒ Object 



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# File 'lib/instructure_registrar/client.rb', line 19

def lookup(service_name)
  begin
    client.get("/#{service_name}").value
  rescue Etcd::KeyNotFound
    "unknown"
  end
end

#register ⇒ Object 



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# File 'lib/instructure_registrar/client.rb', line 27

def register
  return unless server_available
  InstructureRegistrar.config.service_config.keys.each do |key|
    p "InstructureRegistrar setting #{InstructureRegistrar.config.service_name}/#{key} on #{InstructureRegistrar.config.registry_host}..."
    client.set(
      "/#{InstructureRegistrar.config.service_name}/#{key}",
      value: InstructureRegistrar.config.service_config[key]
    )
  end
end

#unregister ⇒ Object 



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# File 'lib/instructure_registrar/client.rb', line 38

def unregister
  return unless server_available
  begin
    InstructureRegistrar.config.service_config.keys.each do |key|
      client.delete(
        "/#{InstructureRegistrar.config.service_name}/#{key}",
        value: InstructureRegistrar.config.service_config[key]
      )
    end
  rescue Etcd::KeyNotFound
    false
  end
end