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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <fstream>
#include <atomic>
#include <thread>
#include <vespa/vespalib/net/crypto_engine.h>
#define FBENCH_DELIMITER "\n[--xxyyzz--FBENCH_MAGIC_DELIMITER--zzyyxx--]\n"
/**
* This struct contains arguments used to control a single client.
* Each client runs in a separate thread. This struct do not own the
* strings it references.
**/
struct ClientArguments
{
/**
* Sequential number identifying this client.
**/
int _myNum;
/**
* Pattern that combined with the client number will become the name
* of the file containing the urls this client should request.
**/
std::string _filenamePattern;
/**
* Pattern that combined with the client number will become the name
* of the file this client should dump url content to. If this
* pattern is set to NULL no output file is generated.
**/
std::string _outputPattern;
/**
* The server the client should fetch urls from.
**/
const char *_hostname;
/**
* The server port where the webserver is running.
**/
int _port;
/**
* The minimum number of milliseconds between two requests from this
* client.
**/
long _cycle;
/**
* Number of milliseconds to wait before making the first request.
* This will be different for different clients and helps distribute
* the requests.
**/
long _delay;
/**
* Number of requests that should be made before we start logging
* response times. This is included so fbench startup slugginess
* will not affect the benchmark results.
**/
int _ignoreCount;
/**
* Minimum number of bytes allowed in a response for a request to be
* successful. If a response contains fewer bytes than this number,
* the request will be logged as a failure even if no errors
* occurred.
**/
int _byteLimit;
/**
* Number of times this client is allowed to re-use the urls in the
* input query file.
**/
int _restartLimit;
/**
* Max line size in the input query data. Longer lines than this
* will be skipped.
**/
int _maxLineSize;
/**
* Indicate wether keep-alive connections should be enabled for this
* client.
**/
bool _keepAlive;
/**
* Indicate wether POST content should be Base64 decoded before
* sending it
**/
bool _base64Decode;
/** Whether we should use POST in requests */
bool _usePostMode;
/**
* Indicate whether to add benchmark data coverage headers
**/
bool _headerBenchmarkdataCoverage;
uint64_t _queryfileOffset;
uint64_t _queryfileEndOffset;
bool _singleQueryFile;
std::string _queryStringToAppend;
std::string _extraHeaders;
std::string _authority;
ClientArguments(int myNum,
const std::string & filenamePattern,
const std::string & outputPattern,
const char *hostname, int port,
long cycle, long delay,
int ignoreCount, int byteLimit,
int restartLimit, int maxLineSize,
bool keepAlive, bool base64Decode,
bool headerBenchmarkdataCoverage,
uint64_t queryfileOffset, uint64_t queryfileEndOffset, bool singleQueryFile,
const std::string & queryStringToAppend, const std::string & extraHeaders,
const std::string &authority, bool postMode)
: _myNum(myNum),
_filenamePattern(filenamePattern),
_outputPattern(outputPattern),
_hostname(hostname),
_port(port),
_cycle(cycle),
_delay(delay),
_ignoreCount(ignoreCount),
_byteLimit(byteLimit),
_restartLimit(restartLimit),
_maxLineSize(maxLineSize),
_keepAlive(keepAlive),
_base64Decode(base64Decode),
_usePostMode(postMode),
_headerBenchmarkdataCoverage(headerBenchmarkdataCoverage),
_queryfileOffset(queryfileOffset),
_queryfileEndOffset(queryfileEndOffset),
_singleQueryFile(singleQueryFile),
_queryStringToAppend(queryStringToAppend),
_extraHeaders(extraHeaders),
_authority(authority)
{
}
private:
ClientArguments(const ClientArguments &);
ClientArguments &operator=(const ClientArguments &);
};
class Timer;
class HTTPClient;
class FileReader;
struct ClientStatus;
/**
* This class implements a single test client. The clients are run in
* separate threads to simulate several simultanious users. The
* operation of a client is controlled through an instance of the
* @ref ClientArguments class.
**/
class Client
{
private:
std::unique_ptr<ClientArguments> _args;
std::unique_ptr<ClientStatus> _status;
std::unique_ptr<Timer> _reqTimer;
std::unique_ptr<Timer> _cycleTimer;
std::unique_ptr<Timer> _masterTimer;
std::unique_ptr<HTTPClient> _http;
std::unique_ptr<FileReader> _reader;
std::unique_ptr<std::ofstream> _output;
int _linebufsize;
std::unique_ptr<char[]> _linebuf;
std::atomic<bool> _stop;
std::atomic<bool> _done;
std::thread _thread;
static void runMe(Client * client);
void run();
public:
using UP = std::unique_ptr<Client>;
/**
* The client arguments given to this method becomes the
* responsibility of the client.
**/
Client(vespalib::CryptoEngine::SP engine, std::unique_ptr<ClientArguments> args);
Client(const Client &) = delete;
Client &operator=(const Client &) = delete;
/**
* Delete objects owned by this client, including the client arguments.
**/
~Client();
/**
* @return A struct containing status info for this client.
**/
const ClientStatus & GetStatus() { return *_status; }
void start();
void stop();
bool done();
void join();
};
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