Class: Nuri::Master

Inherits:
Object
  • Object
show all
Includes:
Choreographer, Helper, Orchestrator
Defined in:
lib/nuri/master.rb

Defined Under Namespace

Modules: Model Classes: GoalGenerator, VMProcedureModifier

Constant Summary collapse

SfpUnknown = 
Sfp::Unknown.new
SfpUndefined = 
Sfp::Undefined.new
AgentSchema = 
'$.Node'
CloudSchema = 
'$.Cloud'
VMSchema = 
'$.VM'
InstallModule = 
File.dirname(__FILE__) + '/../../bin/nuri-install-module'

Constants included from Helper

Helper::DefaultHTTPOpenTimeout, Helper::DefaultHTTPReadTimeout

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Choreographer

#deploy_bsig, #get_bsig, #postprocess, #purge_bsig, #push_cache_model

Methods included from Helper

#delete_data, #get_data, #post_data, #put_data

Methods included from Orchestrator

#assign_action_with_id, #execute_plan, #next_thread_id, #thread_execute_action

Constructor Details

#initialize(p = {}) ⇒ Master

Returns a new instance of Master.



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# File 'lib/nuri/master.rb', line 19

def initialize(p={})
	@mutex_vm_updater = Mutex.new
	@cloudfinder = Sfp::Helper::CloudFinder.new
	@local_agent = nil

	# set modules directory
	if p[:modules_dir] and File.directory?(p[:modules_dir])
		@modules_dir = File.expand_path(p[:modules_dir])
	elsif ENV['NURI_HOME'].is_a?(String) and ENV['NURI_HOME'].strip.length > 0
		@modules_dir = File.join(ENV['NURI_HOME'], 'modules')
	elsif File.directory?(File.expand_path(File.dirname(__FILE__) + '/../../modules'))
		@modules_dir = File.expand_path(File.dirname(__FILE__) + '/../../modules')
	elsif File.directory?(File.expand_path('./modules'))
		@modules_dir = File.expand_path('./modules')
	else
		@modules_dir = '/var/nuri/modules'
	end
	fail "Invalid modules directory #{@modules_dir}!" if !File.directory?(@modules_dir)

	@sas_post_processor = SASPostProcessor

	set_model(p)
end

Instance Attribute Details

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/nuri/master.rb', line 17

def model
  @model
end

Instance Method Details

#get_plan(p = {}) ⇒ Object 



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# File 'lib/nuri/master.rb', line 62

def get_plan(p={})
	# set parameters value to be given to the planner
	p[:sfp] = create_plan_task(p)
	p[:sas_post_processor] = SASPostProcessor

	print "Planning "

	plan = nil
	planning_time = Benchmark.measure do
		planner = Sfp::Planner.new
		plan = planner.solve(p)
	end

	print (p[:color] ? "[Finish] ".green : "[Finish] ")
	puts format_benchmark(planning_time)

	plan
end

#get_state(p = {}) ⇒ Object 



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# File 'lib/nuri/master.rb', line 81

def get_state(p={})
	state = {}
	vms = get_vms
	agents = get_agents

	# push agents list to each agent
	push_agents_list

	mutex = Mutex.new

	# get state of non-VM nodes
	(agents.keys - vms.keys).each do |name|
		Thread.new {
			node_name = name
			node_state = get_node_state(node_name, !!p[:push_modules])
			mutex.synchronize { state[node_name] = node_state }
			state[node_name] = node_state
		}
	end
	total = agents.keys.length - vms.keys.length

	# wait until all threads have finish
	wait? { (state.length >= total) }

	# assign VMs' address
	exist_vms, not_exist_vms = update_vms_address(state)

	# get state of existing VM nodes
	exist_vms.each_key { |name|
		Thread.new {
			node_name = name
			node_state = get_node_state(node_name, !!p[:push_modules])
			mutex.synchronize { state[node_name] = node_state }
			state[node_name] = node_state
		}
	}

	# get state of non-existing VM nodes
	not_exist_vms.each { |name,model|
		state[name] = get_not_exist_vm_state(model)
	}

	# wait until all threads have finish
	wait? { (state.length >= agents.length) }

	# update <vm>.in_cloud value
	update_cloud_vm_relations(state, vms)

	agents.merge!(exist_vms)
	push_agents_list(agents, {:reset => true})

	state
end

#set_model(p = {}) ⇒ Object 



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# File 'lib/nuri/master.rb', line 43

def set_model(p={})
	if p[:model_file]
		home_dir = File.expand_path File.dirname(p[:model_file])
		@parser = Sfp::Parser.new({:home_dir => home_dir})
		@parser.parse File.read(p[:model_file])
		p[:model] = @parser.root
	end

	@model = (p.is_a?(Hash) and p[:model].is_a?(Hash) ? p[:model] : {})
	push_agents_list if @model.length > 0

	# find a list of cloud proxy
	@model.accept(@cloudfinder.reset)

	# create a set of not-exist VMs' state
	@map = generate_not_exist_vm_state(false)
	SASPostProcessor.set_map(@map)
end