author | František Kučera <franta-hg@frantovo.cz> |
Sat, 30 Apr 2022 02:49:50 +0200 | |
branch | v_0 |
changeset 8 | 90990c8b6aef |
parent 7 | 315d985f8424 |
permissions | -rw-r--r-- |
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/** |
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* Relational pipes |
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* Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <memory> |
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#include <string> |
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#include <vector> |
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#include <codecvt> |
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#include <regex> |
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#include <stdexcept> |
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#include <mutex> |
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#include <shared_mutex> |
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#include <iomanip> |
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#include <uuid/uuid.h> |
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#include <relpipe/common/type/typedefs.h> |
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#include <relpipe/reader/TypeId.h> |
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#include <relpipe/reader/handlers/RelationalReaderStringHandler.h> |
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#include <relpipe/reader/handlers/AttributeMetadata.h> |
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#include <relpipe/writer/Factory.h> |
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#include <relpipe/cli/RelpipeCLIException.h> |
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#include "Configuration.h" |
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#include "HTTPServer.h" |
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#include "Hex.h" |
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namespace relpipe { |
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namespace tr { |
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namespace httpd { |
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class HttpdHandler : public relpipe::reader::handlers::RelationalReaderStringHandler { |
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private: |
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std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encoding than UTF-8 |
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shared_ptr<relpipe::writer::RelationalWriter> relationalWriter; |
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std::mutex relationalWriterMutex; |
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Configuration configuration; |
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std::shared_ptr<HTTPServer> httpServer; |
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relpipe::common::type::StringX currentRelationName; |
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std::vector<relpipe::reader::handlers::AttributeMetadata> currentReaderMetadata; |
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size_t currentAttributeIndex = 0; |
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size_t currentRecordNumber = 1; |
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class RequestMatcher { |
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public: |
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std::regex method = std::regex(".*"); |
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std::regex url = std::regex(".*"); |
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virtual ~RequestMatcher() = default; |
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bool matches(const std::string& method, const std::string& url) const { |
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bool result = true; |
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result &= std::regex_match(method, this->method); |
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result &= std::regex_match(url, this->url); |
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return result; |
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} |
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}; |
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class HeaderTemplate { |
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public: |
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std::string name; |
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std::string value; |
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HeaderTemplate() { |
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} |
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HeaderTemplate(std::string name, std::string value) : name(name), value(value) { |
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} |
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virtual ~HeaderTemplate() = default; |
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}; |
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class GlobalHeaderTemplate : public HeaderTemplate, public RequestMatcher { |
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} headerTemplate; |
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std::vector<GlobalHeaderTemplate> headerTemplates; |
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class ResponseTemplate : public RequestMatcher { |
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public: |
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std::string body; |
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uint16_t code = 200; |
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std::vector<HeaderTemplate> headers; |
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} responseTemplate; |
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std::vector<ResponseTemplate> responseTemplates; |
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std::mutex templatesMutex; // TODO: read-write lock (for responseTemplates and headerTemplates) |
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class RequestHandler : public HTTPServer::RequestHandler { |
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private: |
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shared_ptr<relpipe::writer::RelationalWriter> relationalWriter; |
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std::mutex* relationalWriterMutex; |
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std::vector<ResponseTemplate>* responseTemplates; |
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std::vector<GlobalHeaderTemplate>* headerTemplates; |
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std::mutex* templatesMutex; |
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void writeExchange(const HTTPServer::Request& request, const HTTPServer::Response& response) { |
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std::wstring_convert < codecvt_utf8<wchar_t>> convertor; // TODO: support also other encoding than UTF-8 |
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std::lock_guard<std::mutex> lock(*relationalWriterMutex); |
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auto exchangeId = convertor.from_bytes(generateExchangeId()); |
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// TODO: multiple modes: |
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// a) interleaved (current) |
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// b) write exchanges immediatelly + cache headers and flush them at the end |
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// TODO: data types |
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// TODO: support multiple encodings |
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relationalWriter->startRelation(L"exchange",{ |
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// TODO: timestamp |
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// TODO: ordinal number? |
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{L"id", relpipe::writer::TypeId::STRING}, |
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{L"url", relpipe::writer::TypeId::STRING}, |
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{L"method", relpipe::writer::TypeId::STRING}, |
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{L"request_text", relpipe::writer::TypeId::STRING}, |
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{L"request_data", relpipe::writer::TypeId::STRING}, |
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{L"request_size", relpipe::writer::TypeId::INTEGER}, |
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{L"response_text", relpipe::writer::TypeId::STRING}, |
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{L"response_data", relpipe::writer::TypeId::STRING}, |
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{L"response_size", relpipe::writer::TypeId::INTEGER}, |
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{L"response_code", relpipe::writer::TypeId::INTEGER}, |
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}, true); |
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relpipe::common::type::Integer requestSize = request.body.size(); |
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relpipe::common::type::Integer responseSize = response.body.size(); |
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relationalWriter->writeAttribute(exchangeId); |
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relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
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relationalWriter->writeAttribute(convertor.from_bytes(request.method)); |
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relationalWriter->writeAttribute(Hex::toTxt(request.body)); |
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relationalWriter->writeAttribute(Hex::toHex(request.body)); |
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relationalWriter->writeAttribute(&requestSize, typeid (requestSize)); |
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relationalWriter->writeAttribute(Hex::toTxt(response.body)); |
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|
152 |
relationalWriter->writeAttribute(Hex::toHex(response.body)); |
6
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|
153 |
relationalWriter->writeAttribute(&responseSize, typeid (responseSize)); |
5
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|
154 |
relationalWriter->writeAttribute(std::to_wstring(response.code)); |
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|
155 |
|
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changeset
|
156 |
|
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|
157 |
relationalWriter->startRelation(L"header",{ |
6
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|
158 |
// TODO: ordinal number? |
5
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|
159 |
{L"exchange", relpipe::writer::TypeId::STRING}, |
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|
160 |
{L"url", relpipe::writer::TypeId::STRING}, |
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|
161 |
{L"direction", relpipe::writer::TypeId::STRING}, |
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|
162 |
{L"name", relpipe::writer::TypeId::STRING}, |
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|
163 |
{L"value", relpipe::writer::TypeId::STRING}, |
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|
164 |
}, true); |
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|
165 |
|
8
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headers, cookies, GET parameters
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|
166 |
for (const HTTPServer::AVP& h : request.header) { |
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|
167 |
relationalWriter->writeAttribute(exchangeId); |
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|
168 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
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|
169 |
relationalWriter->writeAttribute(L"request"); |
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|
170 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
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|
171 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
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|
172 |
} |
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changeset
|
173 |
|
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|
174 |
for (const HTTPServer::AVP& h : response.header) { |
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|
175 |
relationalWriter->writeAttribute(exchangeId); |
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|
176 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
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|
177 |
relationalWriter->writeAttribute(L"response"); |
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|
178 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
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|
179 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
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|
180 |
} |
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changeset
|
181 |
|
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|
182 |
relationalWriter->startRelation(L"cookie",{ |
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|
183 |
// TODO: ordinal number? |
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|
184 |
{L"exchange", relpipe::writer::TypeId::STRING}, |
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|
185 |
{L"url", relpipe::writer::TypeId::STRING}, |
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|
186 |
{L"direction", relpipe::writer::TypeId::STRING}, |
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|
187 |
{L"name", relpipe::writer::TypeId::STRING}, |
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|
188 |
{L"value", relpipe::writer::TypeId::STRING}, |
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|
189 |
}, true); |
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|
190 |
|
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|
191 |
for (const HTTPServer::AVP& h : request.cookie) { |
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|
192 |
relationalWriter->writeAttribute(exchangeId); |
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|
193 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
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|
194 |
relationalWriter->writeAttribute(L"request"); |
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|
195 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
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|
196 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
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|
197 |
} |
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changeset
|
198 |
|
8
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|
199 |
for (const HTTPServer::AVP& h : response.cookie) { |
5
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|
200 |
relationalWriter->writeAttribute(exchangeId); |
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|
201 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
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|
202 |
relationalWriter->writeAttribute(L"response"); |
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changeset
|
203 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
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changeset
|
204 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
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|
205 |
} |
8
90990c8b6aef
headers, cookies, GET parameters
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changeset
|
206 |
|
90990c8b6aef
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František Kučera <franta-hg@frantovo.cz>
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changeset
|
207 |
relationalWriter->startRelation(L"get_parameter",{ |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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changeset
|
208 |
// TODO: ordinal number? |
90990c8b6aef
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changeset
|
209 |
{L"exchange", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
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|
210 |
{L"url", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
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changeset
|
211 |
{L"name", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
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changeset
|
212 |
{L"value", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
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changeset
|
213 |
}, true); |
90990c8b6aef
headers, cookies, GET parameters
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diff
changeset
|
214 |
|
90990c8b6aef
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František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
215 |
for (const HTTPServer::AVP& h : request.getParameter) { |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
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changeset
|
216 |
relationalWriter->writeAttribute(exchangeId); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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changeset
|
217 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
parents:
7
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changeset
|
218 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
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changeset
|
219 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
220 |
} |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
221 |
|
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
222 |
relationalWriter->startRelation(L"post_parameter",{ |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
223 |
// TODO: ordinal number? |
90990c8b6aef
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František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
224 |
{L"exchange", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
225 |
{L"url", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
226 |
{L"name", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
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changeset
|
227 |
{L"value", relpipe::writer::TypeId::STRING}, |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
228 |
}, true); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
229 |
|
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
230 |
for (const HTTPServer::AVP& h : request.postParameter) { |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
diff
changeset
|
231 |
relationalWriter->writeAttribute(exchangeId); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
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7
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changeset
|
232 |
relationalWriter->writeAttribute(convertor.from_bytes(request.url)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
parents:
7
diff
changeset
|
233 |
relationalWriter->writeAttribute(convertor.from_bytes(h.name)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
parents:
7
diff
changeset
|
234 |
relationalWriter->writeAttribute(convertor.from_bytes(h.value)); |
90990c8b6aef
headers, cookies, GET parameters
František Kučera <franta-hg@frantovo.cz>
parents:
7
diff
changeset
|
235 |
} |
5
121981e6bd54
generate some output relations
František Kučera <franta-hg@frantovo.cz>
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4
diff
changeset
|
236 |
|
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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changeset
|
237 |
|
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František Kučera <franta-hg@frantovo.cz>
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4
diff
changeset
|
238 |
|
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František Kučera <franta-hg@frantovo.cz>
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4
diff
changeset
|
239 |
} |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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4
diff
changeset
|
240 |
|
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generate some output relations
František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
241 |
std::string generateExchangeId() { |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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|
242 |
char buffer[37]; |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
parents:
4
diff
changeset
|
243 |
uuid_t uuid; |
121981e6bd54
generate some output relations
František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
244 |
uuid_generate_random(uuid); |
121981e6bd54
generate some output relations
František Kučera <franta-hg@frantovo.cz>
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|
245 |
// uuid_generate_time(uuid); |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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4
diff
changeset
|
246 |
uuid_unparse_lower(uuid, buffer); |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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changeset
|
247 |
return buffer; |
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František Kučera <franta-hg@frantovo.cz>
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changeset
|
248 |
} |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
249 |
|
3
1184f3de5533
return responses from HTTPDHandler::requestHandler instead of constant ones
František Kučera <franta-hg@frantovo.cz>
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2
diff
changeset
|
250 |
public: |
1184f3de5533
return responses from HTTPDHandler::requestHandler instead of constant ones
František Kučera <franta-hg@frantovo.cz>
parents:
2
diff
changeset
|
251 |
|
5
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|
252 |
RequestHandler(shared_ptr<relpipe::writer::RelationalWriter> relationalWriter, std::mutex* relationalWriterMutex, std::vector<ResponseTemplate>* responseTemplates, std::vector<GlobalHeaderTemplate>* headerTemplates, std::mutex* templatesMutex) : |
121981e6bd54
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|
253 |
relationalWriter(relationalWriter), relationalWriterMutex(relationalWriterMutex), responseTemplates(responseTemplates), headerTemplates(headerTemplates), templatesMutex(templatesMutex) { |
4
37a86904145c
partial implementation of response and header templates
František Kučera <franta-hg@frantovo.cz>
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3
diff
changeset
|
254 |
} |
37a86904145c
partial implementation of response and header templates
František Kučera <franta-hg@frantovo.cz>
parents:
3
diff
changeset
|
255 |
|
37a86904145c
partial implementation of response and header templates
František Kučera <franta-hg@frantovo.cz>
parents:
3
diff
changeset
|
256 |
virtual ~RequestHandler() = default; |
37a86904145c
partial implementation of response and header templates
František Kučera <franta-hg@frantovo.cz>
parents:
3
diff
changeset
|
257 |
|
3
1184f3de5533
return responses from HTTPDHandler::requestHandler instead of constant ones
František Kučera <franta-hg@frantovo.cz>
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2
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changeset
|
258 |
const HTTPServer::Response handle(const HTTPServer::Request& request) override { |
1184f3de5533
return responses from HTTPDHandler::requestHandler instead of constant ones
František Kučera <franta-hg@frantovo.cz>
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changeset
|
259 |
HTTPServer::Response response; |
1184f3de5533
return responses from HTTPDHandler::requestHandler instead of constant ones
František Kučera <franta-hg@frantovo.cz>
parents:
2
diff
changeset
|
260 |
|
5
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František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
261 |
response.code = 404; |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
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diff
changeset
|
262 |
response.body = "<h1>HTTP 404: Not Found</h1><p>(no response template matched)</p>"; |
121981e6bd54
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František Kučera <franta-hg@frantovo.cz>
parents:
4
diff
changeset
|
263 |
|
4
37a86904145c
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std::lock_guard<std::mutex> lock(*templatesMutex); |
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for (ResponseTemplate t : *responseTemplates) { |
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if (t.matches(request.method, request.url)) { |
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response.code = t.code; |
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response.body = t.body; |
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// TODO: replace global header values with request-specific ones instead of appending? |
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for (const GlobalHeaderTemplate& h : *headerTemplates) if (h.matches(request.method, request.url)) response.header.push_back({h.name, h.value}); |
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for (const HeaderTemplate& h : t.headers) response.header.push_back({h.name, h.value}); |
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break; |
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} |
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} |
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writeExchange(request, response); |
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return response; |
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} |
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279 |
|
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}; |
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std::shared_ptr<RequestHandler> requestHandler = std::make_shared<RequestHandler>(relationalWriter, &relationalWriterMutex, &responseTemplates, &headerTemplates, &templatesMutex); |
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283 |
|
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relpipe::common::type::StringX getHeaderAttributePrefix() { |
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// might be configurable - parametrized |
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return L"header."; |
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} |
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288 |
|
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bool isHeaderAttribute(const relpipe::common::type::StringX& attributeName) { |
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return attributeName.rfind(getHeaderAttributePrefix(), 0) == 0; |
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} |
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292 |
|
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relpipe::common::type::StringX fetchHeaderName(const relpipe::common::type::StringX& attributeName) { |
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// TODO: recognize several modes: header.set.*, header.add.*, header.remove.* |
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return attributeName.substr(getHeaderAttributePrefix().size()); |
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} |
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297 |
|
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void headerTemplateAttribute(const relpipe::common::type::StringX& value) { |
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auto attributeName = currentReaderMetadata[currentAttributeIndex].getAttributeName(); |
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300 |
|
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if (attributeName == L"url") headerTemplate.url = std::regex(value.size() ? convertor.to_bytes(value) : ".*"); |
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else if (attributeName == L"method") headerTemplate.method = std::regex(value.size() ? convertor.to_bytes(value) : ".*"); |
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else if (attributeName == L"name") headerTemplate.name = convertor.to_bytes(value); |
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else if (attributeName == L"value") headerTemplate.value = convertor.to_bytes(value); // TODO: header encoding? |
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else throw std::invalid_argument("Unsupported attribute in the request_template relation: " + convertor.to_bytes(attributeName + L" = " + value)); |
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306 |
|
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307 |
currentAttributeIndex++; |
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308 |
|
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309 |
if (currentAttributeIndex % currentReaderMetadata.size() == 0) { |
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310 |
std::lock_guard<std::mutex> lock(templatesMutex); |
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311 |
currentAttributeIndex = 0; |
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312 |
headerTemplates.push_back(headerTemplate); |
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313 |
headerTemplate = GlobalHeaderTemplate(); |
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314 |
} |
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315 |
} |
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|
316 |
|
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317 |
void responseTemplateAttribute(const relpipe::common::type::StringX& value) { |
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auto attributeName = currentReaderMetadata[currentAttributeIndex].getAttributeName(); |
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|
319 |
|
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320 |
if (attributeName == L"url") responseTemplate.url = std::regex(value.size() ? convertor.to_bytes(value) : ".*"); |
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321 |
else if (attributeName == L"method") responseTemplate.method = std::regex(value.size() ? convertor.to_bytes(value) : ".*"); |
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322 |
else if (attributeName == L"code") responseTemplate.code = std::stoi(value); |
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323 |
else if (attributeName == L"text" && value.size()) responseTemplate.body = convertor.to_bytes(value); |
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else if (attributeName == L"data" && value.size()) responseTemplate.body = Hex::fromHex(value).str(); |
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325 |
else if (attributeName == L"text"); // keep empty or value from 'data' |
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326 |
else if (attributeName == L"data"); // keep empty or value from 'text' |
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327 |
else if (isHeaderAttribute(attributeName)) responseTemplate.headers.push_back(HeaderTemplate(convertor.to_bytes(fetchHeaderName(attributeName)), convertor.to_bytes(value))); // TODO: header encoding? |
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328 |
else throw std::invalid_argument("Unsupported attribute in the response_template relation: " + convertor.to_bytes(attributeName + L" = " + value)); |
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|
329 |
|
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|
330 |
currentAttributeIndex++; |
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|
331 |
|
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|
332 |
if (currentAttributeIndex % currentReaderMetadata.size() == 0) { |
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|
333 |
std::lock_guard<std::mutex> lock(templatesMutex); |
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|
334 |
currentAttributeIndex = 0; |
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|
335 |
responseTemplates.push_back(responseTemplate); |
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|
336 |
responseTemplate = ResponseTemplate(); |
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|
337 |
} |
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|
338 |
} |
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339 |
|
0 | 340 |
public: |
341 |
||
1 | 342 |
HttpdHandler(shared_ptr<relpipe::writer::RelationalWriter> relationalWriter, Configuration configuration, std::shared_ptr<HTTPServer> httpServer) : relationalWriter(relationalWriter), configuration(configuration), httpServer(httpServer) { |
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|
343 |
httpServer->setRequestHandler(requestHandler); |
0 | 344 |
} |
345 |
||
346 |
virtual ~HttpdHandler() { |
|
347 |
} |
|
348 |
||
349 |
void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override { |
|
4
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|
350 |
currentRelationName = name; |
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|
351 |
currentReaderMetadata = attributes; |
0 | 352 |
} |
353 |
||
354 |
void attribute(const relpipe::common::type::StringX& value) override { |
|
4
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|
355 |
if (currentRelationName == L"header_template") headerTemplateAttribute(value); |
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|
356 |
else if (currentRelationName == L"response_template") responseTemplateAttribute(value); |
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|
357 |
else throw std::invalid_argument("Unsupported relation: " + convertor.to_bytes(currentRelationName)); |
0 | 358 |
} |
359 |
||
360 |
void endOfPipe() { |
|
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|
361 |
sleep(60); // FIXME: run for configured interval or number of requests or forever (until some stop signal) |
0 | 362 |
} |
363 |
||
364 |
}; |
|
365 |
||
366 |
} |
|
367 |
} |
|
368 |
} |