ClickHouse/src/IO/HTTPCommon.h
2020-10-22 05:02:26 +03:00

69 lines
2.1 KiB
C++

#pragma once
#include <iostream>
#include <memory>
#include <mutex>
#include <Poco/Net/HTTPClientSession.h>
#include <Poco/Net/HTTPRequest.h>
#include <Poco/Net/HTTPResponse.h>
#include <Poco/URI.h>
#include <Common/PoolBase.h>
#include <Poco/URIStreamFactory.h>
#include <IO/ConnectionTimeouts.h>
namespace Poco
{
namespace Net
{
class HTTPServerResponse;
}
}
namespace DB
{
constexpr int HTTP_TOO_MANY_REQUESTS = 429;
class SingleEndpointHTTPSessionPool : public PoolBase<Poco::Net::HTTPClientSession>
{
private:
const std::string host;
const UInt16 port;
const bool https;
using Base = PoolBase<Poco::Net::HTTPClientSession>;
ObjectPtr allocObject() override;
public:
SingleEndpointHTTPSessionPool(const std::string & host_, UInt16 port_, bool https_, size_t max_pool_size_);
};
using PooledHTTPSessionPtr = SingleEndpointHTTPSessionPool::Entry;
using HTTPSessionPtr = std::shared_ptr<Poco::Net::HTTPClientSession>;
void setResponseDefaultHeaders(Poco::Net::HTTPServerResponse & response, unsigned keep_alive_timeout);
/// Create session object to perform requests and set required parameters.
HTTPSessionPtr makeHTTPSession(const Poco::URI & uri, const ConnectionTimeouts & timeouts, bool resolve_host = true);
/// As previous method creates session, but tooks it from pool
PooledHTTPSessionPtr makePooledHTTPSession(const Poco::URI & uri, const ConnectionTimeouts & timeouts, size_t per_endpoint_pool_size);
bool isRedirect(const Poco::Net::HTTPResponse::HTTPStatus status);
/** Used to receive response (response headers and possibly body)
* after sending data (request headers and possibly body).
* Throws exception in case of non HTTP_OK (200) response code.
* Returned istream lives in 'session' object.
*/
std::istream * receiveResponse(
Poco::Net::HTTPClientSession & session, const Poco::Net::HTTPRequest & request, Poco::Net::HTTPResponse & response, bool allow_redirects);
void assertResponseIsOk(
const Poco::Net::HTTPRequest & request, Poco::Net::HTTPResponse & response, std::istream & istr, const bool allow_redirects = false);
}