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module OpenTox
class RestClientWrapper
attr_accessor :request, :response
# REST methods
# Raises OpenTox::Error if call fails (rescued in overwrite.rb -> halt 502)
# Waits for Task to finish and returns result URI of Task per default
# @param [String] destination URI
# @param [optional,Hash|String] Payload data posted to the service
# @param [optional,Hash] Headers with params like :accept, :content_type, :subjectid
# @return [RestClient::Response] REST call response
[:head,:get,:post,:put,:delete].each do |method|
define_singleton_method method do |uri,payload={},headers={}|
# check input
@subjectid = headers[:subjectid] ? headers[:subjectid] : nil
bad_request_error "Invalid URI: '#{uri}'" unless URI.valid? uri
#TODO fix for internal installations
#not_found_error "URI '#{uri}' not found." unless URI.accessible?(uri, @subjectid) unless URI.ssl?(uri)
bad_request_error "Headers are not a hash: #{headers.inspect}" unless headers==nil or headers.is_a?(Hash)
# make sure that no header parameters are set in the payload
[:accept,:content_type,:subjectid].each do |header|
if defined? $aa || URI(uri).host == URI($aa[:uri]).host
else
bad_request_error "#{header} should be submitted in the headers" if payload and payload.is_a?(Hash) and payload[header]
end
end
# create request
args={}
args[:method] = method
args[:url] = uri
args[:timeout] = 600
args[:payload] = payload
headers.each{ |k,v| headers.delete(k) if v==nil } if headers #remove keys with empty values, as this can cause problems
args[:headers] = headers
@request = RestClient::Request.new(args)
# ignore error codes from Task services (may return error codes >= 400 according to API, which causes exceptions in RestClient and RDF::Reader)
@response = @request.execute do |response, request, result|
if [301, 302, 307].include? response.code and request.method == :get
response.follow_redirection(request, result)
else
raise OpenTox::RestCallError.new response.to_s, request, uri unless response.code < 400 or URI.task? uri
response
end
end
end
end
end
end
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