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#pragma once
#include "fwd.h"
#include <yt/cpp/mapreduce/interface/common.h>
#include <yt/cpp/mapreduce/interface/errors.h>
#include <yt/cpp/mapreduce/interface/format.h>
#include <yt/cpp/mapreduce/interface/io.h>
#include <yt/cpp/mapreduce/interface/node.h>
#include <library/cpp/deprecated/atomic/atomic.h>
#include <library/cpp/http/io/stream.h>
#include <util/generic/hash.h>
#include <util/generic/hash_multi_map.h>
#include <util/generic/strbuf.h>
#include <util/generic/guid.h>
#include <util/network/socket.h>
#include <util/stream/input.h>
#include <util/system/mutex.h>
#include <util/system/rwlock.h>
#include <util/generic/ptr.h>
namespace NYT {
class TNode;
namespace NHttp {
struct THeadersPtrWrapper;
} // NHttp
///////////////////////////////////////////////////////////////////////////////
enum class EFrameType
{
Data = 0x01,
KeepAlive = 0x02,
};
class THttpHeader
{
public:
THttpHeader(const TString& method, const TString& command, bool isApi = true);
void AddParameter(const TString& key, TNode value, bool overwrite = false);
void RemoveParameter(const TString& key);
void MergeParameters(const TNode& parameters, bool overwrite = false);
TNode GetParameters() const;
void AddTransactionId(const TTransactionId& transactionId, bool overwrite = false);
void AddPath(const TString& path, bool overwrite = false);
void AddOperationId(const TOperationId& operationId, bool overwrite = false);
void AddMutationId();
bool HasMutationId() const;
void SetToken(const TString& token);
void SetProxyAddress(const TString& proxyAddress);
void SetHostPort(const TString& hostPort);
void SetImpersonationUser(const TString& impersonationUser);
void SetServiceTicket(const TString& ticket);
void SetInputFormat(const TMaybe<TFormat>& format);
void SetOutputFormat(const TMaybe<TFormat>& format);
TMaybe<TFormat> GetOutputFormat() const;
void SetRequestCompression(const TString& compression);
void SetResponseCompression(const TString& compression);
TString GetCommand() const;
TString GetUrl(bool needProxy = false) const;
TString GetHeaderAsString(const TString& hostName, const TString& requestId, bool includeParameters = true) const;
NHttp::THeadersPtrWrapper GetHeader(const TString& hostName, const TString& requestId, bool includeParameters) const;
const TString& GetMethod() const;
private:
bool ShouldAcceptFraming() const;
private:
const TString Method;
const TString Command;
const bool IsApi;
TNode::TMapType Parameters;
TString ImpersonationUser;
TString Token;
TString ServiceTicket;
TNode Attributes;
TString ProxyAddress;
TString HostPort;
private:
TMaybe<TFormat> InputFormat = TFormat::YsonText();
TMaybe<TFormat> OutputFormat = TFormat::YsonText();
TString RequestCompression = "identity";
TString ResponseCompression = "identity";
};
////////////////////////////////////////////////////////////////////////////////
class TAddressCache
{
public:
using TAddressPtr = TAtomicSharedPtr<TNetworkAddress>;
static TAddressCache* Get();
TAddressPtr Resolve(const TString& hostName);
private:
struct TCacheEntry {
TAddressPtr Address;
TInstant ExpirationTime;
};
private:
TAddressPtr FindAddress(const TString& hostName) const;
void AddAddress(TString hostName, TAddressPtr address);
private:
TRWMutex Lock_;
THashMap<TString, TCacheEntry> Cache_;
};
////////////////////////////////////////////////////////////////////////////////
struct TConnection
{
THolder<TSocket> Socket;
TAtomic Busy = 1;
TInstant DeadLine;
ui32 Id;
};
using TConnectionPtr = TAtomicSharedPtr<TConnection>;
class TConnectionPool
{
public:
using TConnectionMap = THashMultiMap<TString, TConnectionPtr>;
static TConnectionPool* Get();
TConnectionPtr Connect(const TString& hostName, TDuration socketTimeout);
void Release(TConnectionPtr connection);
void Invalidate(const TString& hostName, TConnectionPtr connection);
private:
void Refresh();
static SOCKET DoConnect(TAddressCache::TAddressPtr address);
private:
TMutex Lock_;
TConnectionMap Connections_;
};
////////////////////////////////////////////////////////////////////////////////
//
// Input stream that handles YT-specific header/trailer errors
// and throws TErrorResponse if it finds any.
class THttpResponse
: public IInputStream
{
public:
// 'requestId' and 'hostName' are provided for debug reasons
// (they will appear in some error messages).
THttpResponse(
IInputStream* socketStream,
const TString& requestId,
const TString& hostName);
const THttpHeaders& Headers() const;
void CheckErrorResponse() const;
bool IsExhausted() const;
int GetHttpCode() const;
const TString& GetHostName() const;
bool IsKeepAlive() const;
protected:
size_t DoRead(void* buf, size_t len) override;
size_t DoSkip(size_t len) override;
private:
void CheckTrailers(const THttpHeaders& trailers);
TMaybe<TErrorResponse> ParseError(const THttpHeaders& headers);
size_t UnframeRead(void* buf, size_t len);
size_t UnframeSkip(size_t len);
bool RefreshFrameIfNecessary();
private:
THttpInput HttpInput_;
const TString RequestId_;
const TString HostName_;
int HttpCode_ = 0;
TMaybe<TErrorResponse> ErrorResponse_;
bool IsExhausted_ = false;
const bool Unframe_;
size_t RemainingFrameSize_ = 0;
};
////////////////////////////////////////////////////////////////////////////////
class THttpRequest
{
public:
THttpRequest();
THttpRequest(const TString& requestId);
~THttpRequest();
TString GetRequestId() const;
void Connect(TString hostName, TDuration socketTimeout = TDuration::Zero());
IOutputStream* StartRequest(const THttpHeader& header);
void FinishRequest();
void SmallRequest(const THttpHeader& header, TMaybe<TStringBuf> body);
THttpResponse* GetResponseStream();
TString GetResponse();
void InvalidateConnection();
int GetHttpCode();
private:
IOutputStream* StartRequestImpl(const THttpHeader& header, bool includeParameters);
private:
class TRequestStream;
private:
TString HostName;
TString RequestId;
TString Url_;
TInstant StartTime_;
TString LoggedAttributes_;
TConnectionPtr Connection;
THolder<TRequestStream> RequestStream_;
THolder<TSocketInput> SocketInput;
THolder<THttpResponse> Input;
bool LogResponse = false;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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