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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <cstdint>
#include <memory>
#include <vector>
#include "mongo/base/data_builder.h"
#include "mongo/base/data_range.h"
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/util/duration.h"
namespace mongo {
constexpr Seconds kConnectionTimeout{60};
constexpr Seconds kTotalRequestTimeout{120};
/**
* Interface used to upload and receive binary payloads to HTTP servers.
*/
class HttpClient {
public:
enum class HttpMethod {
kGET,
kPOST,
kPUT,
};
struct HttpReply {
std::uint16_t code;
DataBuilder header;
DataBuilder body;
HttpReply(std::uint16_t code_, DataBuilder&& header_, DataBuilder&& body_)
: code(code_), header(std::move(header_)), body(std::move(body_)) {}
};
virtual ~HttpClient() = default;
/**
* Configure all future requests on this client to allow insecure http:// urls.
* By default, only https:// is allowed.
*/
virtual void allowInsecureHTTP(bool allow) = 0;
/**
* Assign a set of headers for this request.
*/
virtual void setHeaders(const std::vector<std::string>& headers) = 0;
/**
* Sets the maximum time to wait during the connection phase.
* `0` indicates no timeout.
*/
virtual void setConnectTimeout(Seconds timeout) = 0;
/**
* Sets the maximum time to wait for the total request.
* `0` indicates no timeout.
*/
virtual void setTimeout(Seconds timeout) = 0;
/**
* Perform a request to specified URL.
* Note that some methods (GET, HEAD) prohibit context bodies.
*/
virtual HttpReply request(HttpMethod method,
StringData url,
ConstDataRange data = {nullptr, 0}) const = 0;
/**
* Convenience wrapper to perform a POST and require a 200 response.
*/
DataBuilder post(StringData url, ConstDataRange data) {
return requestSuccess(HttpMethod::kPOST, url, data);
}
/**
* Convenience wrapper to perform a PUT and require a 200 response.
*/
DataBuilder put(StringData url, ConstDataRange data) {
return requestSuccess(HttpMethod::kPUT, url, data);
}
/**
* Convenience wrapper to perform a GET and require a 200 response.
*/
DataBuilder get(StringData url) {
return requestSuccess(HttpMethod::kGET, url, {nullptr, 0});
}
/**
* Factory method provided by client implementation.
*/
static std::unique_ptr<HttpClient> create();
/**
* Content for ServerStatus http_client section.
*/
static BSONObj getServerStatus();
private:
DataBuilder requestSuccess(HttpMethod method, StringData url, ConstDataRange data) const {
auto reply = request(method, url, data);
uassert(ErrorCodes::OperationFailed,
str::stream() << "Unexpected http status code from server: " << reply.code,
reply.code == 200);
return std::move(reply.body);
}
};
} // namespace mongo
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