Class: RServiceBus2::ResourceManager

Inherits:
Object
  • Object
show all
Defined in:
lib/rservicebus2/resource_manager.rb

Overview

Coordinate Transactions across resources, handlers, and Sagas

Instance Method Summary collapse

Constructor Details

#initialize(state_manager, saga_storage) ⇒ ResourceManager

Constructor



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# File 'lib/rservicebus2/resource_manager.rb', line 5

def initialize(state_manager, saga_storage)
  @app_resources = {}
  @current_resources = {}
  @state_manager = state_manager
  @saga_storage = saga_storage
end

Instance Method Details

#add(name, res) ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 12

def add(name, res)
  @app_resources[name] = res
end

#begin ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 20

def begin
  @current_resources = {}
  @state_manager.begin
  @saga_storage.begin
end

#commit(msg_name) ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 37

def commit(msg_name)
  @state_manager.commit
  @saga_storage.commit
  RServiceBus2.rlog "HandlerManager.commitResourcesUsedToProcessMsg,
    #{msg_name}"
  @current_resources.each do |k, v|
    RServiceBus2.rlog "Commit resource, #{v.class.name}"
    v.commit
    v.finished
  end
end

#get(name) ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 26

def get(name)
  if @current_resources[name].nil?
    r = @app_resources[name]
    r._connect
    r.begin
    RServiceBus2.rlog "Preparing resource: #{name}. Begin"
  end
  @current_resources[name] = @app_resources[name]
  @app_resources[name]
end

#get_all ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 16

def get_all
  @app_resources
end

#rollback(msg_name) ⇒ Object 



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# File 'lib/rservicebus2/resource_manager.rb', line 49

def rollback(msg_name)
  @saga_storage.rollback
  RServiceBus2.rlog "HandlerManager.rollbackResourcesUsedToProcessMsg,
    #{msg_name}"
  @current_resources.each do |k, v|
    begin
      RServiceBus2.rlog "Rollback resource, #{v.class.name}"
      v.rollback
      v.finished
    rescue StandardError => e1
      puts "Caught nested exception rolling back, #{v.class.name}, for msg,
        #{msg_name}"
      puts '****'
      puts e1.message
      puts e1.backtrace
      puts '****'
    end
  end
end