Module: CPEE

Defined in:
lib/cpee/message.rb,
lib/cpee/controller.rb,
lib/cpee/persistence.rb,
lib/cpee/statemachine.rb,
lib/cpee/value_helper.rb,
lib/cpee/implementation.rb,
lib/cpee/implementation_callbacks.rb,
lib/cpee/implementation_properties.rb,
lib/cpee/implementation_notifications.rb

Overview

This file is part of CPEE.

CPEE is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

CPEE is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with CPEE (file COPYING in the main directory). If not, see <www.gnu.org/licenses/>.

Defined Under Namespace

Modules: Callbacks, Message, Notifications, Persistence, Properties Classes: Controller, DeleteInstance, Info, Instances, NewInstance, StateMachine, ValueHelper

Constant Summary collapse

SERVER = 
File.expand_path(File.join(__dir__,'..','cpee.xml'))
PROPERTIES_PATHS_FULL = 
%w{
  /p:properties/p:handlerwrapper
  /p:properties/p:positions/p:*
  /p:properties/p:positions/p:*/@*
  /p:properties/p:dataelements/p:*
  /p:properties/p:endpoints/p:*
  /p:properties/p:attributes/p:*
  /p:properties/p:transformation/p:*
  /p:properties/p:transformation/p:*/@*
  /p:properties/p:description
  /p:properties/p:dslx
  /p:properties/p:dsl
  /p:properties/p:status/p:id
  /p:properties/p:status/p:message
  /p:properties/p:state/@changed
  /p:properties/p:state
}
PROPERTIES_PATHS_INDEX_UNORDERED = 
%w{
  /p:properties/p:positions/p:*
}
PROPERTIES_PATHS_INDEX_ORDERED = 
%w{
  /p:properties/p:dataelements/p:*
  /p:properties/p:endpoints/p:*
  /p:properties/p:attributes/p:*
}

Class Method Summary collapse

Class Method Details

.cleanup_services(watchdog_start_off) ⇒ Object 



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# File 'lib/cpee/implementation.rb', line 148

def self::cleanup_services(watchdog_start_off)
  return if watchdog_start_off
  Dir[File.join(__dir__,'..','..','server','routing','*.rb')].each do |s|
    s = s.sub(/\.rb$/,'')
    pid = (File.read(s + '.pid').to_i rescue nil)
    if !pid.nil? || (Process.kill(0, pid) rescue false)
      system "#{s}.rb stop 1>/dev/null 2>&1"
      puts "➡ Service #{File.basename(s,'.rb')} stopped ..."
    end
  end
end

.implementation(opts) ⇒ Object 



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# File 'lib/cpee/implementation.rb', line 54

def self::implementation(opts)
  opts[:instances]                  ||= File.expand_path(File.join(__dir__,'..','..','server','instances'))
  opts[:global_handlerwrappers]     ||= File.expand_path(File.join(__dir__,'..','..','server','handlerwrappers'))
  opts[:handlerwrappers]            ||= ''
  opts[:topics]                     ||= File.expand_path(File.join(__dir__,'..','..','server','resources','topics.xml'))
  opts[:properties_init]            ||= File.expand_path(File.join(__dir__,'..','..','server','resources','properties.init'))
  opts[:properties_empty]           ||= File.expand_path(File.join(__dir__,'..','..','server','resources','properties.empty'))
  opts[:transformation_dslx]        ||= File.expand_path(File.join(__dir__,'..','..','server','resources','transformation_dslx.xsl'))
  opts[:transformation_service]     ||= File.expand_path(File.join(__dir__,'..','..','server','resources','transformation.xml'))
  opts[:empty_dslx]                 ||= File.expand_path(File.join(__dir__,'..','..','server','resources','empty_dslx.xml'))
  opts[:notifications_init]         ||= File.expand_path(File.join(__dir__,'..','..','server','resources','notifications'))
  opts[:states]                     ||= File.expand_path(File.join(__dir__,'..','..','server','resources','states.xml'))
  opts[:backend_run]                ||= File.expand_path(File.join(__dir__,'..','..','server','resources','backend','run'))
  opts[:backend_template]           ||= File.expand_path(File.join(__dir__,'..','..','server','resources','backend','instance.template'))
  opts[:backend_opts]               ||= 'opts.yaml'
  opts[:watchdog_frequency]         ||= 7
  opts[:watchdog_start_off]         ||= false
  opts[:backend_instance]           ||= 'instance.rb'
  opts[:infinite_loop_stop]         ||= 10000
  opts[:redis_path]                 ||= '/tmp/redis.sock'
  opts[:redis_db]                   ||= 3
  opts[:sse_keepalive_frequency]    ||= 10

  opts[:sse_connections]            = {}
  opts[:redis]                      = Redis.new(path: opts[:redis_path], db: opts[:redis_db])
  opts[:statemachine]               = CPEE::StateMachine.new opts[:states], %w{running simulating replaying finishing stopping abandoned finished} do |id|
    opts[:redis].get("instance:#{id}/state")
  end

  opts[:runtime_cmds]               << [
    "startclean", "Delete instances before starting.", Proc.new { |status|
      Dir.glob(File.expand_path(File.join(opts[:instances],'*'))).each do |d|
        FileUtils.rm_r(d) if File.basename(d) =~ /^\d+$/
      end
    }
  ]

  Proc.new do
    parallel do
      CPEE::watch_services(opts[:watchdog_start_off])
      EM.add_periodic_timer(opts[:watchdog_frequency]) do ### start services
        CPEE::watch_services(opts[:watchdog_start_off])
      end
      EM.defer do ### catch all sse connections
        CPEE::Notifications::sse_distributor(opts)
      end
      EM.add_periodic_timer(opts[:sse_keepalive_frequency]) do
        CPEE::Notifications::sse_heartbeat(opts)
      end
    end

    cleanup do
      CPEE::cleanup_services(opts[:watchdog_start_off])
    end

    interface 'main' do
      run CPEE::Instances, opts if get '*'
      run CPEE::NewInstance, opts if post 'instance-new'
      on resource '\d+' do |r|
        run CPEE::Info, opts if get
        run CPEE::DeleteInstance, opts if delete
      end
    end

    interface 'properties' do |r|
      id = r[:h]['RIDDL_DECLARATION_PATH'].split('/')[1].to_i
      use CPEE::Properties::implementation(id.to_i, opts)
    end

    interface 'notifications' do |r|
      id = r[:h]['RIDDL_DECLARATION_PATH'].split('/')[1].to_i
      use CPEE::Notifications::implementation(id.to_i, opts)
    end

    interface 'callbacks' do |r|
      id = r[:h]['RIDDL_DECLARATION_PATH'].split('/')[1].to_i
      use CPEE::Callbacks::implementation(id.to_i, opts)
    end
  end
end

.watch_services(watchdog_start_off) ⇒ Object 



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# File 'lib/cpee/implementation.rb', line 135

def self::watch_services(watchdog_start_off)
  return if watchdog_start_off
   EM.defer do
     Dir[File.join(__dir__,'..','..','server','routing','*.rb')].each do |s|
       s = s.sub(/\.rb$/,'')
       pid = (File.read(s + '.pid').to_i rescue nil)
       if (pid.nil? || !(Process.kill(0, pid) rescue false)) && !File.exist?(s + '.lock')
         system "#{s}.rb restart 1>/dev/null 2>&1"
         puts "➡ Service #{File.basename(s,'.rb')} started ..."
       end
     end
  end
end