feedback integration mu-auth: incompatibilities

[nbittich]

So far I found the following incompatibilities that makes migrations not working with mu auth:

 update_sudo("ADD <#{temp_graph}> TO <#{graph}>") # mu auth doesn't handle ADD

   update_sudo("DROP SILENT GRAPH <#{temp_graph}>") # mu auth doesn't handle DROP

def is_database_up?
  begin
    location = URI(ENV['MU_SPARQL_ENDPOINT'])
# mu auth response is CONNREFUSED no matter what. it seems you have to ping it with a real sparql query payload
    response = Net::HTTP.get_response( location ) 
    return response.is_a? Net::HTTPSuccess
  rescue Errno::ECONNREFUSED
    return false
  end
end

[nvdk]

database up should be fixed in #13