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handler.cpp
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handler.cpp
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#include "handler.h"
#include <thread> // import std::thread
#include <chrono> // import std::chrono
#include "hbase.h"
#include "htime.h"
#include "hfile.h"
#include "hstring.h"
#include "EventLoop.h" // import setTimeout, setInterval
int Handler::preprocessor(HttpRequest* req, HttpResponse* resp) {
// printf("%s:%d\n", req->client_addr.ip.c_str(), req->client_addr.port);
// printf("%s\n", req->Dump(true, true).c_str());
#if REDIRECT_HTTP_TO_HTTPS
// 301
if (req->scheme == "http") {
std::string location = hv::asprintf("https://%s:%d%s", req->host.c_str(), 8443, req->path.c_str());
return resp->Redirect(location, HTTP_STATUS_MOVED_PERMANENTLY);
}
#endif
// Unified verification request Content-Type?
// if (req->content_type != APPLICATION_JSON) {
// return response_status(resp, HTTP_STATUS_BAD_REQUEST);
// }
// Deserialize request body to json, form, etc.
req->ParseBody();
// Unified setting response Content-Type?
resp->content_type = APPLICATION_JSON;
return HTTP_STATUS_NEXT;
}
int Handler::postprocessor(HttpRequest* req, HttpResponse* resp) {
// printf("%s\n", resp->Dump(true, true).c_str());
return resp->status_code;
}
int Handler::errorHandler(const HttpContextPtr& ctx) {
int error_code = ctx->response->status_code;
return response_status(ctx, error_code);
}
int Handler::Authorization(HttpRequest* req, HttpResponse* resp) {
// authentication sample code
if (strcmp(req->path.c_str(), "/login") == 0) {
return HTTP_STATUS_NEXT;
}
std::string token = req->GetHeader("Authorization");
if (token.empty()) {
response_status(resp, 10011, "Miss Authorization header!");
return HTTP_STATUS_UNAUTHORIZED;
}
else if (strcmp(token.c_str(), "abcdefg") != 0) {
response_status(resp, 10012, "Authorization failed!");
return HTTP_STATUS_UNAUTHORIZED;
}
return HTTP_STATUS_NEXT;
}
int Handler::sleep(const HttpRequestPtr& req, const HttpResponseWriterPtr& writer) {
writer->WriteHeader("X-Response-tid", hv_gettid());
unsigned long long start_ms = gettimeofday_ms();
writer->response->Set("start_ms", start_ms);
std::string strTime = req->GetParam("t", "1000");
if (!strTime.empty()) {
int ms = atoi(strTime.c_str());
if (ms > 0) {
hv_delay(ms);
}
}
unsigned long long end_ms = gettimeofday_ms();
writer->response->Set("end_ms", end_ms);
writer->response->Set("cost_ms", end_ms - start_ms);
response_status(writer, 0, "OK");
return 200;
}
int Handler::setTimeout(const HttpContextPtr& ctx) {
unsigned long long start_ms = gettimeofday_ms();
ctx->set("start_ms", start_ms);
std::string strTime = ctx->param("t", "1000");
if (!strTime.empty()) {
int ms = atoi(strTime.c_str());
if (ms > 0) {
hv::setTimeout(ms, [ctx, start_ms](hv::TimerID timerID){
unsigned long long end_ms = gettimeofday_ms();
ctx->set("end_ms", end_ms);
ctx->set("cost_ms", end_ms - start_ms);
response_status(ctx, 0, "OK");
});
}
}
return HTTP_STATUS_UNFINISHED;
}
int Handler::query(const HttpContextPtr& ctx) {
// scheme:[//[user[:password]@]host[:port]][/path][?query][#fragment]
// ?query => HttpRequest::query_params
for (auto& param : ctx->params()) {
ctx->set(param.first.c_str(), param.second);
}
response_status(ctx, 0, "OK");
return 200;
}
int Handler::kv(HttpRequest* req, HttpResponse* resp) {
if (req->content_type != APPLICATION_URLENCODED) {
return response_status(resp, HTTP_STATUS_BAD_REQUEST);
}
resp->content_type = APPLICATION_URLENCODED;
resp->kv = req->GetUrlEncoded();
resp->SetUrlEncoded("int", 123);
resp->SetUrlEncoded("float", 3.14);
resp->SetUrlEncoded("string", "hello");
return 200;
}
int Handler::json(HttpRequest* req, HttpResponse* resp) {
if (req->content_type != APPLICATION_JSON) {
return response_status(resp, HTTP_STATUS_BAD_REQUEST);
}
resp->content_type = APPLICATION_JSON;
resp->json = req->GetJson();
resp->json["int"] = 123;
resp->json["float"] = 3.14;
resp->json["string"] = "hello";
return 200;
}
int Handler::form(HttpRequest* req, HttpResponse* resp) {
if (req->content_type != MULTIPART_FORM_DATA) {
return response_status(resp, HTTP_STATUS_BAD_REQUEST);
}
resp->content_type = MULTIPART_FORM_DATA;
resp->form = req->GetForm();
resp->SetFormData("int", 123);
resp->SetFormData("float", 3.14);
resp->SetFormData("string", "hello");
// resp->SetFormFile("file", "test.jpg");
return 200;
}
int Handler::grpc(HttpRequest* req, HttpResponse* resp) {
if (req->content_type != APPLICATION_GRPC) {
return response_status(resp, HTTP_STATUS_BAD_REQUEST);
}
// parse protobuf
// ParseFromString(req->body);
// resp->content_type = APPLICATION_GRPC;
// serailize protobuf
// resp->body = SerializeAsString(xxx);
response_status(resp, 0, "OK");
return 200;
}
int Handler::test(const HttpContextPtr& ctx) {
ctx->setContentType(ctx->type());
ctx->set("bool", ctx->get<bool>("bool"));
ctx->set("int", ctx->get<int>("int"));
ctx->set("float", ctx->get<float>("float"));
ctx->set("string", ctx->get("string"));
response_status(ctx, 0, "OK");
return 200;
}
int Handler::restful(const HttpContextPtr& ctx) {
// RESTful /:field/ => HttpRequest::query_params
// path=/group/:group_name/user/:user_id
std::string group_name = ctx->param("group_name");
std::string user_id = ctx->param("user_id");
ctx->set("group_name", group_name);
ctx->set("user_id", user_id);
response_status(ctx, 0, "OK");
return 200;
}
int Handler::login(const HttpContextPtr& ctx) {
std::string username = ctx->get("username");
std::string password = ctx->get("password");
if (username.empty() || password.empty()) {
response_status(ctx, 10001, "Miss username or password");
return HTTP_STATUS_BAD_REQUEST;
}
else if (strcmp(username.c_str(), "admin") != 0) {
response_status(ctx, 10002, "Username not exist");
return HTTP_STATUS_BAD_REQUEST;
}
else if (strcmp(password.c_str(), "123456") != 0) {
response_status(ctx, 10003, "Password wrong");
return HTTP_STATUS_BAD_REQUEST;
}
else {
ctx->set("token", "abcdefg");
response_status(ctx, 0, "OK");
return HTTP_STATUS_OK;
}
}
int Handler::upload(const HttpContextPtr& ctx) {
int status_code = 200;
std::string save_path = "html/uploads/";
if (ctx->is(MULTIPART_FORM_DATA)) {
status_code = ctx->request->SaveFormFile("file", save_path.c_str());
} else {
std::string filename = ctx->param("filename", "unnamed.txt");
std::string filepath = save_path + filename;
status_code = ctx->request->SaveFile(filepath.c_str());
}
return response_status(ctx, status_code);
}
int Handler::recvLargeFile(const HttpContextPtr& ctx, http_parser_state state, const char* data, size_t size) {
// printf("recvLargeFile state=%d\n", (int)state);
int status_code = HTTP_STATUS_UNFINISHED;
HFile* file = (HFile*)ctx->userdata;
switch (state) {
case HP_HEADERS_COMPLETE:
{
if (ctx->is(MULTIPART_FORM_DATA)) {
// NOTE: You can use multipart_parser if you want to use multipart/form-data.
ctx->close();
return HTTP_STATUS_BAD_REQUEST;
}
std::string save_path = "html/uploads/";
std::string filename = ctx->param("filename", "unnamed.txt");
std::string filepath = save_path + filename;
file = new HFile;
if (file->open(filepath.c_str(), "wb") != 0) {
ctx->close();
return HTTP_STATUS_INTERNAL_SERVER_ERROR;
}
ctx->userdata = file;
}
break;
case HP_BODY:
{
if (file && data && size) {
if (file->write(data, size) != size) {
ctx->close();
return HTTP_STATUS_INTERNAL_SERVER_ERROR;
}
}
}
break;
case HP_MESSAGE_COMPLETE:
{
status_code = HTTP_STATUS_OK;
ctx->setContentType(APPLICATION_JSON);
response_status(ctx, status_code);
if (file) {
delete file;
ctx->userdata = NULL;
}
}
break;
case HP_ERROR:
{
if (file) {
file->remove();
delete file;
ctx->userdata = NULL;
}
}
break;
default:
break;
}
return status_code;
}
int Handler::sendLargeFile(const HttpContextPtr& ctx) {
std::thread([ctx](){
ctx->writer->Begin();
std::string filepath = ctx->service->document_root + ctx->request->Path();
HFile file;
if (file.open(filepath.c_str(), "rb") != 0) {
ctx->writer->WriteStatus(HTTP_STATUS_NOT_FOUND);
ctx->writer->WriteHeader("Content-Type", "text/html");
ctx->writer->WriteBody("<center><h1>404 Not Found</h1></center>");
ctx->writer->End();
return;
}
http_content_type content_type = CONTENT_TYPE_NONE;
const char* suffix = hv_suffixname(filepath.c_str());
if (suffix) {
content_type = http_content_type_enum_by_suffix(suffix);
}
if (content_type == CONTENT_TYPE_NONE || content_type == CONTENT_TYPE_UNDEFINED) {
content_type = APPLICATION_OCTET_STREAM;
}
size_t filesize = file.size();
ctx->writer->WriteHeader("Content-Type", http_content_type_str(content_type));
#if USE_TRANSFER_ENCODING_CHUNKED
ctx->writer->WriteHeader("Transfer-Encoding", "chunked");
#else
ctx->writer->WriteHeader("Content-Length", filesize);
#endif
ctx->writer->EndHeaders();
char* buf = NULL;
int len = 40960; // 40K
SAFE_ALLOC(buf, len);
size_t total_readbytes = 0;
int last_progress = 0;
int sleep_ms_per_send = 0;
if (ctx->service->limit_rate <= 0) {
// unlimited
} else {
sleep_ms_per_send = len * 1000 / 1024 / ctx->service->limit_rate;
}
if (sleep_ms_per_send == 0) sleep_ms_per_send = 1;
int sleep_ms = sleep_ms_per_send;
auto start_time = std::chrono::steady_clock::now();
auto end_time = start_time;
while (total_readbytes < filesize) {
if (!ctx->writer->isConnected()) {
break;
}
if (!ctx->writer->isWriteComplete()) {
hv_delay(1);
continue;
}
size_t readbytes = file.read(buf, len);
if (readbytes <= 0) {
// read file error!
ctx->writer->close();
break;
}
int nwrite = ctx->writer->WriteBody(buf, readbytes);
if (nwrite < 0) {
// disconnected!
break;
}
total_readbytes += readbytes;
int cur_progress = total_readbytes * 100 / filesize;
if (cur_progress > last_progress) {
// printf("<< %s progress: %ld/%ld = %d%%\n",
// ctx->request->path.c_str(), (long)total_readbytes, (long)filesize, (int)cur_progress);
last_progress = cur_progress;
}
end_time += std::chrono::milliseconds(sleep_ms);
std::this_thread::sleep_until(end_time);
}
ctx->writer->End();
SAFE_FREE(buf);
// auto elapsed_time = std::chrono::duration_cast<std::chrono::seconds>(end_time - start_time);
// printf("<< %s taked %ds\n", ctx->request->path.c_str(), (int)elapsed_time.count());
}).detach();
return HTTP_STATUS_UNFINISHED;
}
int Handler::sse(const HttpContextPtr& ctx) {
// SSEvent(message) every 1s
hv::setInterval(1000, [ctx](hv::TimerID timerID) {
if (ctx->writer->isConnected()) {
char szTime[DATETIME_FMT_BUFLEN] = {0};
datetime_t now = datetime_now();
datetime_fmt(&now, szTime);
ctx->writer->SSEvent(szTime);
} else {
hv::killTimer(timerID);
}
});
return HTTP_STATUS_UNFINISHED;
}