RCAP - Common Alerting Protocol for Ruby

Overview

The Common Alerting Protocol is a lightweight standard to facilitate the distribution of alerting data. RCAP is an implementation of the CAP in Ruby. It allows for the creation of RCAP messages from Ruby applications and the parsing of external messages.

RCAP currently supports CAP 1.0, 1.1 and 1.2.

Installation

RCAP is distributed as a Ruby gem and is available from Rubygems.org.

gem install rcap

The gem is also available for download and manual installtion at http://www.aimred.com/gems.

Usage

require 'rcap'

alert = RCAP::CAP_1_2::Alert.new do |alert|
  alert.sender   = 'cape_town_disaster_relief@capetown.municipal.za'
  alert.status   = Alert::STATUS_ACTUAL
  alert.msg_type = Alert::MSG_TYPE_ALERT
  alert.scope    = Alert::SCOPE_PUBLIC 

  alert.add_info do |info|
    info.event       = 'Liquid Petroleoum Tanker Fire'
    info.language    = 'en-ZA'
    info.categories  << Info::CATEGORY_TRANSPORT
    info.categories  << Info::CATEGORY_FIRE 
    info.urgency     = Info::URGENCY_IMMEDIATE
    info.severity    = Info::SEVERITY_SEVERE
    info.certainty   = Info::CERTAINTY_OBSERVED
    info.headline    = 'LIQUID PETROLEOUM TANKER FIRE ON N2 INCOMING FREEWAY'
    info.description = 'A liquid petroleoum tanker has caught fire on the N2 incoming freeway 1km
                        after the R300 interchange.  Municipal fire fighting crews have been dispatched.
                        Traffic control officers are on the scene and have diverted traffic onto
                        alternate routes.' 

    info.add_area do |area|
      area.area_desc = 'N2 Highway/R300 Interchange' 
      area.add_geocode do |geocode|
        geocode.name  = 'Intersection'
        geocode.value = 'N2-15' 
      end
    end
  end
end

puts alert.status                 # "Actual"
info = alert.infos.first
puts info.language                # "en-ZA"
puts info.categories.join( ', ' ) # "Transport, Fire"
puts info.areas.first             # "N2 Highway/R300 Interchange"

For more documentaion please refer to the full RCAP API documentation.

Documentation and Resources

• The RCAP project page can be found at http://www.aimred.com/projects/rcap
• The RCAP API documentation can be found at http://www.aimred.com/projects/rcap/api
• A public git repository can be found at http://github.com/farrel/RCAP
• A CAP validator based on RCAP is available at http://capvalidator.heroku.com

License

RCAP is distributed under the BSD License

Copyright 2010 – 2013 AIMRED CC. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY AIMRED CC ``AS IS’’ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AIMRED CC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of AIMRED CC.