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# Copyright (C) 2007, 2008, 2009, 2010 Heiko Bernloehr (FreeIT.de).
#
# This file is part of ECS.
#
# ECS is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of
# the License, or (at your option) any later version.
#
# ECS 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
# Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with ECS. If not, see <http://www.gnu.org/licenses/>.
class EventsController < ApplicationController
before_action :authentication
before_action :add_cookie_header # only for anonymous participants
def initialize
super
end
def index
count = params["count"].blank? ? -1 : params["count"].to_i
events_render(@participant.id, count)
end
def fifo
max_tries = 5
begin
Event.transaction do
count = params["count"].blank? ? 1 : params["count"].to_i
events_render(@participant.id, count)
end
rescue ActiveRecord::StaleObjectError, ActiveRecord::RecordNotFound => error
logger.info "**** Concurrent access at events queue (max_tries=#{max_tries})."
max_tries-= 1
retry unless max_tries <= 0
raise
end
end
private
def events_render(participant_id, count)
events = []
events_txt = ""
Event.for_participant(participant_id,count).each do |event|
if request.post?
event.destroy
# do not destroy message if another reference in events to the message
# exists or the message is not marked as removed
unless Event.find_by_message_id(event.message.id) or !event.message.removed
event.message.destroy
end
end
events <<
{
:ressource => event.message.ressource.namespace + "/" +
event.message.ressource.ressource + "/" +
event.message.id.to_s,
:status => event.ev_type.name
}
end
respond_to do |format|
format.json { render :json => JSON.pretty_generate(events) }
format.xml { render :xml => events }
format.text { render :plain => events_render_txt(events) }
end
end
def events_render_txt(events)
events_txt = ""
events.each do |event|
events_txt << event[:ressource] + " " + event[:status] + "\r\n"
end
events_txt
end
end
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