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require "opentox-server"
@@class = RDF::OT.Task
require File.join(ENV["HOME"],".opentox","config","task.rb")
module OpenTox
class Application < Service
helpers do
def status_code uri
sparql = "SELECT ?o WHERE {<#{uri}> <#{RDF::OT.hasStatus}> ?o. }"
result = Backend::FourStore.query(sparql,nil)
unless result.size == 1
# TODO: identify error cause and fix, simultanous 4stoer access?
internal_server_error "Cannot find status for '#{uri}', candidates are #{result.inspect}"
end
status = result.last.gsub(/"|'/,'').gsub(/\^\^.*$/,'')
case status
when "Completed"
200
when "Running"
202
when "Cancelled"
503
when "Error"
# TODO: get code from error report
500
end
end
end
get '/:id/?' do
uri = uri("/#{params[:id]}")
rdf = FourStore.get(uri, request.env['HTTP_ACCEPT'])
halt status_code(uri), rdf
end
=begin
get '/:id/:status/?' do
end
=end
put '/:id/:status/?' do
uri = uri params[:id]
sparql = []
case params[:status]
when "Completed"
bad_request_error "No resultURI parameter recieved. Cannot complete task '#{uri}' without resultURI." unless params[:resultURI]
sparql << "DELETE DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Running\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Completed\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.resultURI}> <#{params[:resultURI]}>}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.percentageCompleted}> \"100.0\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.finished_at}> \"#{RDF::Literal.new(DateTime.now).to_s}\"}}"
when "Running"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.percentageCompleted}> \"#{params["percentageCompleted"].to_f}\"^^#{RDF::XSD.float}}" if params["percentageCompleted"]
#task.waiting_for = params[:waiting_for] if params.has_key?("waiting_for")
when "Cancelled"
sparql << "DELETE DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Running\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Cancelled\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.finished_at}> \"#{DateTime.now}\"}}"
when "Error"
puts "ERROR"
sparql << "DELETE DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Running\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.hasStatus}> \"Error\"}}"
sparql << "INSERT DATA { GRAPH <#{uri}> {<#{uri}> <#{RDF::OT.finished_at}> \"#{DateTime.now}\"}}"
id = params[:errorReport].split("\n").first.sub(/^(_:\w+) .*/,'\1')
params[:errorReport] += "\n<#{uri}> <#{RDF::OT.error}> #{id} ."
Backend::FourStore.post uri, params[:errorReport], "text/plain" if params[:errorReport]
#if task.waiting_for and task.waiting_for.uri?
# try cancelling the child task
else
bad_request_error "Invalid status value: '"+params[:status].to_s+"'"
end
sparql.each{|q| Backend::FourStore.update q}
end
end
end
|
