void
tws::wtss::time_series_functor::operator()(const tws::core::http_request& request,
tws::core::http_response& response)
{
// get client query string
const char* qstring = request.query_string();
if(qstring == nullptr)
throw tws::core::http_request_error() << tws::error_description("time_series operation requires the following parameters: \"coverage\", \"attributes\", \"latitude\", \"longitude\", \"start\", \"end\".");
// parse plain text query string to a std::map
tws::core::query_string_t qstr = tws::core::expand(qstring);
// parse parameters to a struct
timeseries_request_parameters parameters = tws::wtss::decode_timeseries_request(qstr);
// valid parameters
timeseries_validated_parameters vparameters = valid(parameters);
// prepare the JSON root document
rapidjson::Document::AllocatorType allocator;
rapidjson::Value jattributes(rapidjson::kArrayType);
// compute timeseries for queried coverage attributes
compute_time_series(parameters, vparameters, allocator, jattributes);
// prepare the return document
rapidjson::Document doc;
doc.SetObject();
prepare_timeseries_response(parameters, vparameters, doc, jattributes, allocator);
// send response
rapidjson::StringBuffer str_buff;
rapidjson::Writer<rapidjson::StringBuffer> writer(str_buff);
doc.Accept(writer);
const char* p_str_buff = str_buff.GetString();
//response.add_header("Content-Length", boost::lexical_cast<std::string>(content.size()).c_str());
response.add_header("Content-Type", "application/json");
response.add_header("Access-Control-Allow-Origin", "*");
response.set_content(p_str_buff, str_buff.Size());
}
void
tws::wtss::describe_coverage_functor::operator()(const tws::core::http_request& request,
tws::core::http_response& response)
{
const char* qstring = request.query_string();
if(qstring == nullptr)
throw tws::core::http_request_error() << tws::error_description("describe_coverage operation requires the parameter: \"name\".");
tws::core::query_string_t qstr = tws::core::expand(qstring);
// which coverage?
tws::core::query_string_t::const_iterator it = qstr.find("name");
tws::core::query_string_t::const_iterator it_end = qstr.end();
if(it == it_end)
throw tws::core::http_request_error() << tws::error_description("check describe_coverage operation: \"name\" parameter is missing!");
// retrieve the coverage
const tws::geoarray::geoarray_t& cv = tws::geoarray::geoarray_manager::instance().get(it->second);
// output result: JSON document
rapidjson::Document::AllocatorType allocator;
rapidjson::Document doc;
doc.SetObject();
write(cv, doc, allocator);
rapidjson::StringBuffer str_buff;
rapidjson::Writer<rapidjson::StringBuffer> writer(str_buff);
doc.Accept(writer);
const char* p_str_buff = str_buff.GetString();
response.add_header("Content-Type", "application/json");
response.add_header("Access-Control-Allow-Origin", "*");
response.set_content(p_str_buff, str_buff.Size());
}
bool tws::wcs::validate_request_parameters(const tws::core::http_request &request, const tws::core::http_response &response, const std::string &operation)
{
const char* query_string = request.query_string().c_str();
if (query_string == nullptr)
{
// TODO: wcs xml exception
throw tws::missing_argument_error() << tws::error_description("Arguments missing. OGC services requires at least three arguments: \"service\", \"version\" e \"request\"");
}
tws::core::query_string_t arguments = tws::core::expand(query_string);
// Service Validation
const auto& coverage_id = arguments.find("service");
if (coverage_id == arguments.end())
throw tws::missing_argument_error() << tws::error_description("Missing \"coverageID\" argument");
if (coverage_id->second != "WCS")
throw tws::invalid_argument_error() << tws::error_description("Invalid parameter \"service\" value. It should be \"WCS\"");
// Version Validation
const auto& version = arguments.find("version");
if (version == arguments.end())
throw tws::missing_argument_error() << tws::error_description("Missing \"version\" argument");
if (version->second != "2.0.1" && version->second != "2.0")
throw tws::invalid_argument_error() << tws::error_description("Invalid parameter \"version\" value. It should be \"2.0\"");
// Request Validation
const auto& request_param = arguments.find("request");
if (request_param == arguments.end())
throw tws::missing_argument_error() << tws::error_description("Missing \"request\" argument");
if (request_param->second != operation)
throw tws::invalid_argument_error() << tws::error_description("Invalid parameter \"request\" value.");
return false;
}