Files
codeocean/lib/docker_container_pool.rb
Jan Renz 7296ccda33 Cleanup
2015-04-23 13:12:44 +02:00

92 lines
3.6 KiB
Ruby

require 'concurrent/future'
require 'concurrent/timer_task'
require 'concurrent/utilities'
class DockerContainerPool
@containers = ThreadSafe::Hash[ExecutionEnvironment.all.map { |execution_environment| [execution_environment.id, ThreadSafe::Array.new] }]
#as containers are not containing containers in use
@all_containers = ThreadSafe::Hash[ExecutionEnvironment.all.map { |execution_environment| [execution_environment.id, ThreadSafe::Array.new] }]
def self.clean_up
@refill_task.try(:shutdown)
@containers.values.each do |containers|
DockerClient.destroy_container(containers.shift) until containers.empty?
end
end
def self.config
@config ||= CodeOcean::Config.new(:docker).read(erb: true)[:pool]
end
def self.remove_from_all_containers(container, execution_environment)
@all_containers[execution_environment.id]-=[container]
if(@containers[execution_environment.id].include?(container))
@containers[execution_environment.id]-=[container]
end
end
def self.add_to_all_containers(container, execution_environment)
@all_containers[execution_environment.id]+=[container]
if(!@containers[execution_environment.id].include?(container))
@containers[execution_environment.id]+=[container]
else
Rails.logger.info('failed trying to add existing container ' + container.to_s)
end
end
def self.create_container(execution_environment)
container = DockerClient.create_container(execution_environment)
container.status = 'available'
container
end
def self.return_container(container, execution_environment)
container.status = 'available'
unless(@containers[execution_environment.id].include?(container))
@containers[execution_environment.id].push(container)
else
Rails.logger.info('trying to return existing container ' + container.to_s)
end
end
def self.get_container(execution_environment)
if config[:active]
container = @containers[execution_environment.id].try(:shift) || nil
Rails.logger.info('get_container fetched container ' + container.to_s)
Rails.logger.info('get_container remaining avail. container ' + @containers[execution_environment.id].size.to_s)
Rails.logger.info('get_container all container count' + @all_containers[execution_environment.id].size.to_s)
container
else
create_container(execution_environment)
end
end
def self.quantities
@containers.map { |key, value| [key, value.length] }.to_h
end
def self.refill
ExecutionEnvironment.where('pool_size > 0').each do |execution_environment|
if config[:refill][:async]
Concurrent::Future.execute { refill_for_execution_environment(execution_environment) }
else
refill_for_execution_environment(execution_environment)
end
end
end
def self.refill_for_execution_environment(execution_environment)
refill_count = [execution_environment.pool_size - @all_containers[execution_environment.id].length, config[:refill][:batch_size]].min
Rails.logger.info('adding' + refill_count.to_s + ' containers for ' + execution_environment.name )
c = refill_count.times.map { create_container(execution_environment) }
@containers[execution_environment.id] += c
@all_containers[execution_environment.id] += c
#refill_count.times.map { create_container(execution_environment) }
end
def self.start_refill_task
@refill_task = Concurrent::TimerTask.new(execution_interval: config[:refill][:interval], run_now: false, timeout_interval: config[:refill][:timeout]) { refill }
@refill_task.execute
end
end