Class: DruidConfig::Client

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

Overview

Class to initialize the connection to Zookeeper

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(zookeeper, opts = {}) ⇒ Client

Initialize Zookeeper connection



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# File 'lib/druid_config/client.rb', line 11

def initialize(zookeeper, opts = {})
  # Store it for future resets
  @zookeeper = zookeeper
  @opts = opts
  @zk = ZK.new(zookeeper, opts)
end

Instance Attribute Details

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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

def opts
  @opts
end

#zk ⇒ Object (readonly)

Returns the value of attribute zk.



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

def zk
  @zk
end

#zookeeper ⇒ Object (readonly)

Returns the value of attribute zookeeper.



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

def zookeeper
  @zookeeper
end

Instance Method Details

#close! ⇒ Object

Close the client



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# File 'lib/druid_config/client.rb', line 43

def close!
  zk.close!
end

#coordinator ⇒ Object

Get the URL of a coordinator.

This funciton can raise a DruidConfig::Exceptions::NotAvailableNodes exception indicating there aren’t any node to process this request



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# File 'lib/druid_config/client.rb', line 24

def coordinator
  return zk.coordinator if zk.coordinator
  fail DruidConfig::Exceptions::NotAvailableNodes, 'coordinator'
end

#overlord ⇒ Object

Get the URI of a overlord

This funciton can raise a DruidConfig::Exceptions::NotAvailableNodes exception indicating there aren’t any node to process this request



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# File 'lib/druid_config/client.rb', line 35

def overlord
  return zk.overlord if zk.overlord
  fail DruidConfig::Exceptions::NotAvailableNodes, 'overlord'
end

#reset! ⇒ Object

Reset the client



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# File 'lib/druid_config/client.rb', line 50

def reset!
  close!
  @zk = ZK.new(@zookeeper, @opts)
end