Class: ZK::Server::JavaEmbedded

Inherits:
Base
  • Object
show all
Defined in:
lib/zk-server/java_embedded.rb

Overview

gah, this needs to be a singleton, but whaddyagonnado

Defined Under Namespace

Modules: JZ

Constant Summary collapse

System = 
java.lang.System
JFile = 
java.io.File

Instance Attribute Summary collapse

Attributes inherited from Base

#config

Instance Method Summary collapse

Methods inherited from Base

#clobber!, #create_files!, #initialize, #ping?, #wait_until_ping, #write_log4j_properties!, #write_myid!, #write_zoo_cfg!

Methods included from Logging

#logger

Constructor Details

This class inherits a constructor from ZK::Server::Base

Instance Attribute Details

#zookeeper_thread ⇒ Object (readonly)

Returns the value of attribute zookeeper_thread.



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# File 'lib/zk-server/java_embedded.rb', line 11

def zookeeper_thread
  @zookeeper_thread
end

Instance Method Details

#cnxn_factory ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 107

def cnxn_factory
  @cnxn_factory ||= JZ::Server::NIOServerCnxn::Factory.new(zk_config.client_port_address, zk_config.max_client_cnxns)
end

#j_data_dir ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 115

def j_data_dir
  @j_data_dir ||= JFile.new(zk_config.data_dir)
end

#j_data_log_dir ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 111

def j_data_log_dir
  @j_data_log_dir ||= JFile.new(zk_config.data_log_dir)
end

#logging_related_system_properties ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 74

def logging_related_system_properties
  [ ['log4j.configuration', "file://#{ZK::Server.default_log4j_props_path}"],
    ['zookeeper.log.dir', config.log_dir],
    ['zookeeper.root.logger', 'INFO,CONSOLE'], ]
end

#pid ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 70

def pid
  $$ # CHEEKY!!
end

#require_dependencies ⇒ Object

XXX: this assumes that we're only going to ever run one of these per process (or at least have only one log)



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# File 'lib/zk-server/java_embedded.rb', line 82

def require_dependencies
  logging_related_system_properties.each do |k,v|
    System.set_property(k,v)
  end

  require 'log4j'
  require 'zookeeper_jar'

  JZ.dynamically_create_consts
end

#run ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 53

def run
  @mutex.synchronize do
    return false if @run_called
    @run_called = true

    create_files!
    require_dependencies
    spawn_zookeeper_thread!
    wait_until_ping
    true
  end
end

#running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zk-server/java_embedded.rb', line 47

def running?
  @mutex.synchronize do
    @zk_server && @zk_server.running?
  end
end

#shutdown ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 36

def shutdown
  @mutex.synchronize do
    return unless @run_called and @cnxn_factory and @zk_server and running?

    @cnxn_factory.shutdown
    @zk_server.shutdown
  end

  @zookeeper_thread and @zookeeper_thread.join(5)
end

#spawn_zookeeper_thread! ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 94

def spawn_zookeeper_thread!
  @zookeeper_thread ||= Thread.new do
    Thread.current.abort_on_exception = true
    cnxn_factory.startup(zk_server)
    cnxn_factory.join
    cnxn_factory.shutdown

    @mutex.synchronize do
      @exit_cond.broadcast
    end
  end
end

#spawned? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zk-server/java_embedded.rb', line 66

def spawned?
  !!@zookeeper_thread
end

#zk_config ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 123

def zk_config
  @zk_config ||= JZ::Server::ServerConfig.new.tap { |c| c.parse(zoo_cfg_path) }
end

#zk_server ⇒ Object 



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# File 'lib/zk-server/java_embedded.rb', line 119

def zk_server
  @zk_server ||= JZ::Server::ZooKeeperServer.new(j_data_log_dir, j_data_dir, zk_config.tick_time)
end