Module: HybridPlatformsConductor::CurrentDirMonitor

Defined in:
lib/hybrid_platforms_conductor/current_dir_monitor.rb

Overview

Implement a global monitor to protect accesses to the current directory. This is needed as the OS concept of current directory is not thread-safe: it is linked to a process, and we need to have thread-safe code running (mainly for parallel deployment and tests).

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.monitor ⇒ Object (readonly)

Returns the value of attribute monitor.



10
11
12
 
# File 'lib/hybrid_platforms_conductor/current_dir_monitor.rb', line 10

def monitor
  @monitor
end

Class Method Details

.decorate_method(module_to_decorate, method_name) ⇒ Object

Decorate a given method with the monitor.

Parameters

  • module_to_decorate (Module): The module including the method to decorate

  • method_name (Symbol): The method name to be decorated



20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/hybrid_platforms_conductor/current_dir_monitor.rb', line 20

def self.decorate_method(module_to_decorate, method_name)
  original_method_name = "__hpc__#{method_name}__undecorated__".to_sym
  module_to_decorate.alias_method original_method_name, method_name
  module_to_decorate.define_method(method_name) do |*args, &block|
    result = nil
    CurrentDirMonitor.monitor.synchronize do
      # puts "TID #{Thread.current.object_id} from #{caller[2]} - Current dir monitor taken from #{Dir.pwd}"
      result = self.send(original_method_name, *args, &block)
      # puts "TID #{Thread.current.object_id} from #{caller[2]} - Current dir monitor released back to #{Dir.pwd}"
    end
    result
  end
end