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drogon/drogon_ctl/create_controller.cc

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/**
*
* create_controller.cc
* An Tao
*
* Copyright 2018, An Tao. All rights reserved.
* https://github.com/an-tao/drogon
* Use of this source code is governed by a MIT license
* that can be found in the License file.
*
* Drogon
*
*/
#include "create_controller.h"
#include "cmd.h"
#include <drogon/DrTemplateBase.h>
#include <drogon/utils/Utilities.h>
#include <iostream>
#include <fstream>
#include <regex>
using namespace drogon_ctl;
void create_controller::handleCommand(std::vector<std::string> &parameters)
{
// std::cout<<"create!"<<std::endl;
ControllerType type = Simple;
for (auto iter = parameters.begin(); iter != parameters.end(); ++iter)
{
if ((*iter)[0] == '-')
{
if (*iter == "-s" || (*iter == "--simple"))
{
parameters.erase(iter);
break;
}
else if (*iter == "-a" || *iter == "-h" || *iter == "--http")
{
type = Http;
parameters.erase(iter);
break;
}
else if (*iter == "-w" || *iter == "--websocket")
{
type = WebSocket;
parameters.erase(iter);
break;
}
else if (*iter == "-r" || *iter == "--restful")
{
type = Restful;
parameters.erase(iter);
break;
}
else
{
std::cout << ARGS_ERROR_STR << std::endl;
return;
}
}
}
if (type != Restful)
createController(parameters, type);
else
{
std::string resource;
for (auto iter = parameters.begin(); iter != parameters.end(); ++iter)
{
if ((*iter).find("--resource=") == 0)
{
resource = (*iter).substr(strlen("--resource="));
parameters.erase(iter);
break;
}
if ((*iter)[0] == '-')
{
std::cerr << "Error parameter for '" << (*iter) << "'"
<< std::endl;
exit(1);
}
}
if (parameters.size() > 1)
{
std::cerr << "Too many parameters" << std::endl;
exit(1);
}
auto className = parameters[0];
createARestfulController(className, resource);
}
}
void create_controller::newSimpleControllerHeaderFile(
std::ofstream &file,
const std::string &className)
{
file << "#pragma once\n";
file << "\n";
file << "#include <drogon/HttpSimpleController.h>\n";
file << "\n";
file << "using namespace drogon;\n";
file << "\n";
std::string class_name = className;
std::string namepace_path = "/";
auto pos = class_name.find("::");
size_t namespaceCount = 0;
while (pos != std::string::npos)
{
++namespaceCount;
auto namespaceName = class_name.substr(0, pos);
class_name = class_name.substr(pos + 2);
file << "namespace " << namespaceName << "\n";
namepace_path.append(namespaceName).append("/");
file << "{\n";
pos = class_name.find("::");
}
file << "class " << class_name << " : public drogon::HttpSimpleController<"
<< class_name << ">\n";
file << "{\n";
file << " public:\n";
file << " void asyncHandleHttpRequest(const HttpRequestPtr& "
"req, std::function<void (const HttpResponsePtr &)> &&callback) "
"override;\n";
file << " PATH_LIST_BEGIN\n";
file << " // list path definitions here;\n";
file << " "
"// PATH_ADD(\"/"
"path\", \"filter1\", \"filter2\", HttpMethod1, HttpMethod2...);\n";
file << " PATH_LIST_END\n";
file << "};\n";
while (namespaceCount > 0)
{
--namespaceCount;
file << "}\n";
}
}
void create_controller::newSimpleControllerSourceFile(
std::ofstream &file,
const std::string &className,
const std::string &filename)
{
file << "#include \"" << filename << ".h\"\n";
file << "\n";
auto pos = className.rfind("::");
auto class_name = className;
if (pos != std::string::npos)
{
auto namespacename = className.substr(0, pos);
file << "using namespace " << namespacename << ";\n";
file << "\n";
class_name = className.substr(pos + 2);
}
file << "void " << class_name
<< "::asyncHandleHttpRequest(const HttpRequestPtr& req, "
"std::function<void (const HttpResponsePtr &)> &&callback)\n";
file << "{\n";
file << " // write your application logic here\n";
file << "}\n";
}
void create_controller::newWebsockControllerHeaderFile(
std::ofstream &file,
const std::string &className)
{
file << "#pragma once\n";
file << "\n";
file << "#include <drogon/WebSocketController.h>\n";
file << "\n";
file << "using namespace drogon;\n";
file << "\n";
std::string class_name = className;
std::string namepace_path = "/";
auto pos = class_name.find("::");
size_t namespaceCount = 0;
while (pos != std::string::npos)
{
++namespaceCount;
auto namespaceName = class_name.substr(0, pos);
class_name = class_name.substr(pos + 2);
file << "namespace " << namespaceName << "\n";
namepace_path.append(namespaceName).append("/");
file << "{\n";
pos = class_name.find("::");
}
file << "class " << class_name << " : public drogon::WebSocketController<"
<< class_name << ">\n";
file << "{\n";
file << " public:\n";
file << " void handleNewMessage(const WebSocketConnectionPtr&,\n";
file << " std::string &&,\n";
file << " const WebSocketMessageType &) "
"override;\n";
file << " void handleNewConnection(const HttpRequestPtr &,\n";
file << " const "
"WebSocketConnectionPtr&) override;\n";
file << " void handleConnectionClosed(const "
"WebSocketConnectionPtr&) override;\n";
file << " WS_PATH_LIST_BEGIN\n";
file << " // list path definitions here;\n";
file << " // WS_PATH_ADD(\"/path\", \"filter1\", \"filter2\", ...);\n";
file << " WS_PATH_LIST_END\n";
file << "};\n";
while (namespaceCount > 0)
{
--namespaceCount;
file << "}\n";
}
}
void create_controller::newWebsockControllerSourceFile(
std::ofstream &file,
const std::string &className,
const std::string &filename)
{
file << "#include \"" << filename << ".h\"\n";
file << "\n";
auto pos = className.rfind("::");
auto class_name = className;
if (pos != std::string::npos)
{
auto namespacename = className.substr(0, pos);
file << "using namespace " << namespacename << ";\n";
file << "\n";
class_name = className.substr(pos + 2);
}
file << "void " << class_name
<< "::handleNewMessage(const WebSocketConnectionPtr& wsConnPtr, "
"std::string &&message, const WebSocketMessageType &type)\n";
file << "{\n";
file << " // write your application logic here\n";
file << "}\n";
file << "\n";
file << "void " << class_name
<< "::handleNewConnection(const HttpRequestPtr &req, const "
"WebSocketConnectionPtr& wsConnPtr)\n";
file << "{\n";
file << " // write your application logic here\n";
file << "}\n";
file << "\n";
file << "void " << class_name
<< "::handleConnectionClosed(const WebSocketConnectionPtr& "
"wsConnPtr)\n";
file << "{\n";
file << " // write your application logic here\n";
file << "}\n";
}
void create_controller::newHttpControllerHeaderFile(
std::ofstream &file,
const std::string &className)
{
file << "#pragma once\n";
file << "\n";
file << "#include <drogon/HttpController.h>\n";
file << "\n";
file << "using namespace drogon;\n";
file << "\n";
std::string class_name = className;
std::string namepace_path = "/";
auto pos = class_name.find("::");
size_t namespaceCount = 0;
while (pos != std::string::npos)
{
++namespaceCount;
auto namespaceName = class_name.substr(0, pos);
class_name = class_name.substr(pos + 2);
file << "namespace " << namespaceName << "\n";
namepace_path.append(namespaceName).append("/");
file << "{\n";
pos = class_name.find("::");
}
file << "class " << class_name << " : public drogon::HttpController<"
<< class_name << ">\n";
file << "{\n";
file << " public:\n";
file << " METHOD_LIST_BEGIN\n";
file << " // use METHOD_ADD to add your custom processing function "
"here;\n";
file << " // METHOD_ADD(" << class_name
<< "::get, \"/{2}/{1}\", Get);"
" // path is "
<< namepace_path << class_name << "/{arg2}/{arg1}\n";
file << " // METHOD_ADD(" << class_name
<< "::your_method_name, \"/{1}/{2}/list\", Get);"
" // path is "
<< namepace_path << class_name << "/{arg1}/{arg2}/list\n";
file << " // ADD_METHOD_TO(" << class_name
<< "::your_method_name, \"/absolute/path/{1}/{2}/list\", Get);"
" // path is /absolute/path/{arg1}/{arg2}/list\n";
file << "\n";
file << " METHOD_LIST_END\n";
file << " // your declaration of processing function maybe like this:\n";
file << " // void get(const HttpRequestPtr& req, "
"std::function<void (const HttpResponsePtr &)> &&callback, int "
"p1, std::string p2);\n";
file << " // void your_method_name(const HttpRequestPtr& req, "
"std::function<void (const HttpResponsePtr &)> &&callback, double "
"p1, int p2) const;\n";
file << "};\n";
while (namespaceCount > 0)
{
--namespaceCount;
file << "}\n";
}
}
void create_controller::newHttpControllerSourceFile(
std::ofstream &file,
const std::string &className,
const std::string &filename)
{
file << "#include \"" << filename << ".h\"\n";
file << "\n";
auto pos = className.rfind("::");
auto class_name = className;
if (pos != std::string::npos)
{
auto namespacename = className.substr(0, pos);
file << "using namespace " << namespacename << ";\n";
file << "\n";
class_name = className.substr(pos + 2);
}
file << "// Add definition of your processing function here\n";
}
void create_controller::createController(std::vector<std::string> &httpClasses,
ControllerType type)
{
for (auto iter = httpClasses.begin(); iter != httpClasses.end(); ++iter)
{
if ((*iter)[0] == '-')
{
std::cout << ARGS_ERROR_STR << std::endl;
return;
}
}
for (auto const &className : httpClasses)
{
createController(className, type);
}
}
void create_controller::createController(const std::string &className,
ControllerType type)
{
std::regex regex("::");
std::string ctlName =
std::regex_replace(className, regex, std::string("_"));
std::string headFileName = ctlName + ".h";
std::string sourceFilename = ctlName + ".cc";
{
std::ifstream iHeadFile(headFileName.c_str(), std::ifstream::in);
std::ifstream iSourceFile(sourceFilename.c_str(), std::ifstream::in);
if (iHeadFile || iSourceFile)
{
std::cout << "The file you want to create already exists, "
"overwrite it(y/n)?"
<< std::endl;
auto in = getchar();
(void)getchar(); // get the return key
if (in != 'Y' && in != 'y')
{
std::cout << "Abort!" << std::endl;
exit(0);
}
}
}
std::ofstream oHeadFile(headFileName.c_str(), std::ofstream::out);
std::ofstream oSourceFile(sourceFilename.c_str(), std::ofstream::out);
if (!oHeadFile || !oSourceFile)
{
perror("");
exit(1);
}
if (type == Http)
{
std::cout << "Create a http controller: " << className << std::endl;
newHttpControllerHeaderFile(oHeadFile, className);
newHttpControllerSourceFile(oSourceFile, className, ctlName);
}
else if (type == Simple)
{
std::cout << "Create a http simple controller: " << className
<< std::endl;
newSimpleControllerHeaderFile(oHeadFile, className);
newSimpleControllerSourceFile(oSourceFile, className, ctlName);
}
else if (type == WebSocket)
{
std::cout << "Create a websocket controller: " << className
<< std::endl;
newWebsockControllerHeaderFile(oHeadFile, className);
newWebsockControllerSourceFile(oSourceFile, className, ctlName);
}
}
void create_controller::createARestfulController(const std::string &className,
const std::string &resource)
{
std::regex regex("::");
std::string ctlName =
std::regex_replace(className, regex, std::string("_"));
std::string headFileName = ctlName + ".h";
std::string sourceFilename = ctlName + ".cc";
{
std::ifstream iHeadFile(headFileName.c_str(), std::ifstream::in);
std::ifstream iSourceFile(sourceFilename.c_str(), std::ifstream::in);
if (iHeadFile || iSourceFile)
{
std::cout << "The file you want to create already exists, "
"overwrite it(y/n)?"
<< std::endl;
auto in = getchar();
(void)getchar(); // get the return key
if (in != 'Y' && in != 'y')
{
std::cout << "Abort!" << std::endl;
exit(0);
}
}
}
std::ofstream oHeadFile(headFileName.c_str(), std::ofstream::out);
std::ofstream oSourceFile(sourceFilename.c_str(), std::ofstream::out);
if (!oHeadFile || !oSourceFile)
{
perror("");
exit(1);
}
auto v = utils::splitString(className, "::");
drogon::DrTemplateData data;
data.insert("className", v[v.size() - 1]);
v.pop_back();
data.insert("namespaceVector", v);
data.insert("resource", resource);
data.insert("fileName", ctlName);
if (resource.empty())
{
data.insert("ctlCommand",
std::string("drogon_ctl create controller -r ") +
className);
}
else
{
data.insert("ctlCommand",
std::string("drogon_ctl create controller -r ") +
className + " --resource=" + resource);
}
try
{
auto templ = DrTemplateBase::newTemplate("restful_controller_h.csp");
oHeadFile << templ->genText(data);
templ = DrTemplateBase::newTemplate("restful_controller_cc.csp");
oSourceFile << templ->genText(data);
}
catch (const std::exception &err)
{
std::cerr << err.what() << std::endl;
exit(1);
}
std::cout << "Create a http restful API controller: " << className
<< std::endl;
std::cout << "File name: " << ctlName << ".h and " << ctlName << ".cc"
<< std::endl;
}
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