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#pragma once
#include "http.h"
#include <util/generic/intrlist.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
class TAbortableHttpResponseRegistry;
using TOutageId = size_t;
////////////////////////////////////////////////////////////////////////////////
class TAbortedForTestPurpose
: public yexception
{ };
struct TOutageOptions
{
using TSelf = TOutageOptions;
/// @brief Number of responses to abort.
FLUENT_FIELD_DEFAULT(size_t, ResponseCount, std::numeric_limits<size_t>::max());
/// @brief Number of bytes to read before abortion. If zero, abort immediately.
FLUENT_FIELD_DEFAULT(size_t, LengthLimit, 0);
};
////////////////////////////////////////////////////////////////////////////////
class IAbortableHttpResponse
: public TIntrusiveListItem<IAbortableHttpResponse>
{
public:
virtual void Abort() = 0;
virtual const TString& GetUrl() const = 0;
virtual bool IsAborted() const = 0;
virtual void SetLengthLimit(size_t limit) = 0;
virtual ~IAbortableHttpResponse() = default;
};
class TAbortableHttpResponseBase
: public IAbortableHttpResponse
{
public:
TAbortableHttpResponseBase(const TString& url);
~TAbortableHttpResponseBase();
void Abort() override;
const TString& GetUrl() const override;
bool IsAborted() const override;
void SetLengthLimit(size_t limit) override;
protected:
TString Url_;
std::atomic<bool> Aborted_ = {false};
size_t LengthLimit_ = std::numeric_limits<size_t>::max();
};
////////////////////////////////////////////////////////////////////////////////
/// @brief Stream wrapper for @ref NYT::NHttpClient::TCoreHttpResponse with possibility to emulate errors.
class TAbortableCoreHttpResponse
: public IInputStream
, public TAbortableHttpResponseBase
{
public:
TAbortableCoreHttpResponse(
std::unique_ptr<IInputStream> stream,
const TString& url);
private:
size_t DoRead(void* buf, size_t len) override;
size_t DoSkip(size_t len) override;
private:
std::unique_ptr<IInputStream> Stream_;
};
////////////////////////////////////////////////////////////////////////////////
/// @brief Class extends @ref NYT::THttpResponse with possibility to emulate errors.
class TAbortableHttpResponse
: public THttpResponse
, public TAbortableHttpResponseBase
{
public:
class TOutage
{
public:
TOutage(TString urlPattern, TAbortableHttpResponseRegistry& registry, const TOutageOptions& options);
TOutage(TOutage&&) = default;
TOutage(const TOutage&) = delete;
~TOutage();
void Stop();
private:
TString UrlPattern_;
TAbortableHttpResponseRegistry& Registry_;
TOutageId Id_;
bool Stopped_ = false;
};
public:
TAbortableHttpResponse(
IInputStream* socketStream,
const TString& requestId,
const TString& hostName,
const TString& url);
/// @brief Abort any responses which match `urlPattern` (i.e. contain it in url).
///
/// @return number of aborted responses.
static int AbortAll(const TString& urlPattern);
/// @brief Start outage. Future responses which match `urlPattern` (i.e. contain it in url) will fail.
///
/// @return outage object controlling the lifetime of outage (outage stops when object is destroyed)
[[nodiscard]] static TOutage StartOutage(
const TString& urlPattern,
const TOutageOptions& options = TOutageOptions());
/// @brief Start outage. Future `responseCount` responses which match `urlPattern` (i.e. contain it in url) will fail.
///
/// @return outage object controlling the lifetime of outage (outage stops when object is destroyed)
[[nodiscard]] static TOutage StartOutage(
const TString& urlPattern,
size_t responseCount);
private:
size_t DoRead(void* buf, size_t len) override;
size_t DoSkip(size_t len) override;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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