/** Process any HTTP errors states.
@param res : The http response
@param rs : The iutput stream from the response
@param url : The url originally called
@exception Mantid::Kernel::Exception::InternetError : Coded for the failure
state.
*/
int InternetHelper::processErrorStates(const Poco::Net::HTTPResponse &res,
std::istream &rs,
const std::string &url) {
int retStatus = res.getStatus();
g_log.debug() << "Answer from web: " << res.getStatus() << " "
<< res.getReason() << std::endl;
// get github api rate limit information if available;
int rateLimitRemaining;
DateAndTime rateLimitReset;
try {
rateLimitRemaining =
boost::lexical_cast<int>(res.get("X-RateLimit-Remaining", "-1"));
rateLimitReset.set_from_time_t(
boost::lexical_cast<int>(res.get("X-RateLimit-Reset", "0")));
} catch (boost::bad_lexical_cast const &) {
rateLimitRemaining = -1;
}
if (retStatus == HTTP_OK) {
throw Exception::InternetError("Response was ok, processing should never "
"have entered processErrorStates",
retStatus);
} else if (retStatus == HTTP_FOUND) {
throw Exception::InternetError("Response was HTTP_FOUND, processing should "
"never have entered processErrorStates",
retStatus);
} else if (retStatus == HTTP_MOVED_PERMANENTLY) {
throw Exception::InternetError("Response was HTTP_MOVED_PERMANENTLY, "
"processing should never have entered "
"processErrorStates",
retStatus);
} else if (retStatus == HTTP_NOT_MODIFIED) {
throw Exception::InternetError("Not modified since provided date" +
rateLimitReset.toSimpleString(),
retStatus);
} else if ((retStatus == HTTP_FORBIDDEN) && (rateLimitRemaining == 0)) {
throw Exception::InternetError(
"The Github API rate limit has been reached, try again after " +
rateLimitReset.toSimpleString(),
retStatus);
} else {
std::stringstream info;
std::stringstream ss;
Poco::StreamCopier::copyStream(rs, ss);
if (retStatus == HTTP_NOT_FOUND)
info << "Failed to download " << url << " with the link "
<< "<a href=\"" << url << "\">.\n"
<< "Hint. Check that link is correct</a>";
else {
// show the error
info << res.getReason();
info << ss.str();
g_log.debug() << ss.str();
}
throw Exception::InternetError(info.str() + ss.str(), retStatus);
}
}
void GitHubApiHelper::processResponseHeaders(
const Poco::Net::HTTPResponse &res) {
// get github api rate limit information if available;
int rateLimitRemaining = 0;
int rateLimitLimit;
DateAndTime rateLimitReset;
try {
rateLimitLimit =
boost::lexical_cast<int>(res.get("X-RateLimit-Limit", "-1"));
rateLimitRemaining =
boost::lexical_cast<int>(res.get("X-RateLimit-Remaining", "-1"));
rateLimitReset.set_from_time_t(
boost::lexical_cast<int>(res.get("X-RateLimit-Reset", "0")));
} catch (boost::bad_lexical_cast const &) {
rateLimitLimit = -1;
}
if (rateLimitLimit > -1) {
g_log.debug() << "GitHub API " << rateLimitRemaining << " of "
<< rateLimitLimit << " calls left. Resets at "
<< rateLimitReset.toSimpleString() << " GMT\n";
}
}
