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#include "http_code_extractor.h"
#include <library/cpp/http/io/stream.h>
#include <library/cpp/http/misc/httpcodes.h>
#include <util/generic/maybe.h>
#include <util/generic/strbuf.h>
#include <util/string/cast.h>
namespace NRainCheck {
TMaybe<HttpCodes> TryGetHttpCodeFromErrorDescription(const TStringBuf& errorMessage) {
// Try to get HttpCode from library/cpp/neh response.
// If response has HttpCode and it is not 200 OK, library/cpp/neh will send a message
// "library/cpp/neh/http.cpp:<LINE>: request failed(<FIRST-HTTP-RESPONSE-LINE>)"
// (see library/cpp/neh/http.cpp:625). So, we will try to parse this message and
// find out HttpCode in it. It is bad temporary solution, but we have no choice.
const TStringBuf SUBSTR = "request failed(";
const size_t SUBSTR_LEN = SUBSTR.size();
const size_t FIRST_LINE_LEN = TStringBuf("HTTP/1.X NNN").size();
TMaybe<HttpCodes> httpCode;
const size_t substrPos = errorMessage.find(SUBSTR);
if (substrPos != TStringBuf::npos) {
const TStringBuf firstLineStart = errorMessage.SubStr(substrPos + SUBSTR_LEN, FIRST_LINE_LEN);
try {
httpCode = static_cast<HttpCodes>(ParseHttpRetCode(firstLineStart));
if (*httpCode < HTTP_CONTINUE || *httpCode >= HTTP_CODE_MAX) {
httpCode = Nothing();
}
} catch (const TFromStringException& ex) {
// Can't parse HttpCode: it is OK, because ErrorDescription can be random string.
}
}
return httpCode;
}
}
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