expresscpp/src/router.cpp at master · LeeRuns/expresscpp · GitHub

History

164 lines (134 loc) · 5.02 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

#include "expresscpp/router.hpp"

#include <functional>

#include <memory>

#include "boost/algorithm/string.hpp"

#include "boost/uuid/uuid_generators.hpp"

#include "boost/uuid/uuid_io.hpp"

#include "expresscpp/console.hpp"

#include "expresscpp/impl/utils.hpp"

#include "expresscpp/layer.hpp"

using namespace std::literals;

namespace expresscpp {

Router::Router() {

Init();

}

Router::Router(std::string_view name) : name_(name) {

Init();

}

void Router::Init() {

timestamp_ = std::chrono::system_clock::now();

uuid_ = boost::uuids::random_generator()();

Console::Debug(fmt::format("Router \"{}\" created, uuid \"{}\"", name_, boostUUIDToString(uuid_)));

}

std::vector<std::shared_ptr<Layer>> Router::stack() const {

return stack_;

}

void Router::Use(std::string_view registered_path, handler_wn_t handler) {

Console::Debug(fmt::format("use \"{}\" registered", registered_path));

PathToRegExpOptions op{ this->caseSensitive, true, false};

auto layer = std::make_shared<Layer>(registered_path, op, parent_path_, handler);

stack_.emplace_back(layer);

}

void Router::Use(handler_wn_t handler) {

Console::Debug(fmt::format("use middleware"));

PathToRegExpOptions op{ this->caseSensitive, false, false};

auto layer = std::make_shared<Layer>("/", op, parent_path_, handler);

stack_.emplace_back(layer);

}

void Router::RegisterPath(std::string_view registered_path, const HttpMethod method, handler_wn_t handler) {

auto route = CreateRoute(registered_path);

Console::Debug(fmt::format("registering path \"{}\"", registered_path));

PathToRegExpOptions op;

auto layer = std::make_shared<Layer>("/", op, parent_path_, handler);

layer->SetMethod(method);

route->methods_.insert(method);

route->stack_.emplace_back(layer);

}

void Router::Use(std::string_view path, std::shared_ptr<Router> router) {

Console::Debug(fmt::format("adding router to path: \"{}\"", path));

const auto parent_path = fmt::format("{}{}", parent_path_, path);

router->SetParentPath(parent_path);

PathToRegExpOptions op{ this->caseSensitive, true, false};

auto layer = std::make_shared<Layer>(path, op, parent_path_,

[router](auto req, auto res, auto /*n*/) { router->HandleRequest(req, res); });

stack_.emplace_back(layer);

}

void Router::Next(std::shared_ptr<Request> req, std::shared_ptr<Response> /*res*/, std::shared_ptr<std::string> err) {

if (err != nullptr) {

Console::Error(fmt::format("next error: {}", *err));

return;

}

while (req->match != true && req->idx < stack_.size()) {

req->current_layer = stack_[req->idx++];

req->match = req->current_layer->Match(req);

req->current_route = req->current_layer->GetRoute();

// no match

if (req->match == false) {

Console::Debug(

fmt::format("no match for path \"{}\", layer \"{}\"", req->getPath(), req->current_layer->GetPath()));

continue;

}

if (!req->current_route) {

// process non-route handlers normally

break;

}

const auto method = req->getMethod();

const auto has_method = req->current_route->HasMethod(method);

// don't even bother matching route

if (!has_method && method != HttpMethod::Head) {

req->match = false;

continue;

}

void Router::HandleRequest(std::shared_ptr<Request> req, std::shared_ptr<Response> res) {

assert(req != nullptr);

assert(res != nullptr);

Console::Debug(fmt::format("dispatching request path: \"{}\", method \"{}\"", req->getPath(),

getHttpMethodName(req->getMethod())));

// find next matching layer

req->idx = 0;

Next(req, res);

NextRouter next_handler(this, req, res);

while (req->match == true) {

req->match = false;

req->current_layer->HandleRequest(req, res, next_handler);

// will be reset to true in the next() function if there is another matching layer

}

Console::Debug(fmt::format(R"(finished request: "{}", "{}")", getHttpMethodName(req->getMethod()), req->getPath()));

}

void Router::SetParentPath(const std::string& parent_path) {

for (auto layer : stack_) {

layer->SetParentPath(parent_path);

}

parent_path_ = parent_path;

}

auto Router::GetRouter() {

Console::Debug("getting a router");

auto r = std::make_shared<Router>();

return r;

}

auto Router::GetRouter(std::string_view name) {

Console::Debug(fmt::format("getting a router{}", name));

auto r = std::make_shared<Router>(name);

return r;

}

std::shared_ptr<Route> Router::CreateRoute(const std::string_view registered_path) {

// create route

auto r = std::make_shared<Route>(registered_path);

// create layer and add it to the stack

PathToRegExpOptions op{ this->caseSensitive, true, true};

std::shared_ptr<Layer> l =

std::make_shared<Layer>(registered_path, op, parent_path_, [&](auto req, auto res, auto next) {

Console::Debug("lambda called");

l->GetRoute()->Dispatch(req, res, next);

});

// add route to the layer

l->SetRoute(r);

stack_.emplace_back(l);

return r;

}

std::string_view Router::GetName() const {

return name_;

}

} // namespace expresscpp

expresscpp/src/router.cpp at master · LeeRuns/expresscpp · GitHub

Expand file tree

Breadcrumbs

router.cpp

Latest commit

History

Breadcrumbs

router.cpp

File metadata and controls