forked from drogonframework/drogon
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Support request stream (drogonframework#2055)
- Loading branch information
Showing
31 changed files
with
1,967 additions
and
183 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| #include <drogon/drogon.h> | ||
| #include <drogon/HttpController.h> | ||
| #include <drogon/HttpRequest.h> | ||
| #include <fstream> | ||
|
|
||
| using namespace drogon; | ||
|
|
||
| class StreamEchoReader : public RequestStreamReader | ||
| { | ||
| public: | ||
| StreamEchoReader(ResponseStreamPtr respStream) | ||
| : respStream_(std::move(respStream)) | ||
| { | ||
| } | ||
|
|
||
| void onStreamData(const char *data, size_t length) override | ||
| { | ||
| LOG_INFO << "onStreamData[" << length << "]"; | ||
| respStream_->send({data, length}); | ||
| } | ||
|
|
||
| void onStreamFinish(std::exception_ptr ptr) override | ||
| { | ||
| if (ptr) | ||
| { | ||
| try | ||
| { | ||
| std::rethrow_exception(ptr); | ||
| } | ||
| catch (const std::exception &e) | ||
| { | ||
| LOG_ERROR << "onStreamError: " << e.what(); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| LOG_INFO << "onStreamFinish"; | ||
| } | ||
| respStream_->close(); | ||
| } | ||
|
|
||
| private: | ||
| ResponseStreamPtr respStream_; | ||
| }; | ||
|
|
||
| class RequestStreamExampleCtrl : public HttpController<RequestStreamExampleCtrl> | ||
| { | ||
| public: | ||
| METHOD_LIST_BEGIN | ||
| ADD_METHOD_TO(RequestStreamExampleCtrl::stream_echo, "/stream_echo", Post); | ||
| ADD_METHOD_TO(RequestStreamExampleCtrl::stream_upload, | ||
| "/stream_upload", | ||
| Post); | ||
| METHOD_LIST_END | ||
|
|
||
| void stream_echo( | ||
| const HttpRequestPtr &, | ||
| RequestStreamPtr &&stream, | ||
| std::function<void(const HttpResponsePtr &)> &&callback) const | ||
| { | ||
| auto resp = drogon::HttpResponse::newAsyncStreamResponse( | ||
| [stream](ResponseStreamPtr respStream) { | ||
| stream->setStreamReader( | ||
| std::make_shared<StreamEchoReader>(std::move(respStream))); | ||
| }); | ||
| callback(resp); | ||
| } | ||
|
|
||
| void stream_upload( | ||
| const HttpRequestPtr &req, | ||
| RequestStreamPtr &&stream, | ||
| std::function<void(const HttpResponsePtr &)> &&callback) const | ||
| { | ||
| struct Entry | ||
| { | ||
| MultipartHeader header; | ||
| std::string tmpName; | ||
| std::ofstream file; | ||
| }; | ||
|
|
||
| auto files = std::make_shared<std::vector<Entry>>(); | ||
| auto reader = RequestStreamReader::newMultipartReader( | ||
| req, | ||
| [files](MultipartHeader &&header) { | ||
| LOG_INFO << "Multipart name: " << header.name | ||
| << ", filename:" << header.filename | ||
| << ", contentType:" << header.contentType; | ||
|
|
||
| files->push_back({std::move(header)}); | ||
| auto tmpName = drogon::utils::genRandomString(40); | ||
| if (!files->back().header.filename.empty()) | ||
| { | ||
| files->back().tmpName = tmpName; | ||
| files->back().file.open("uploads/" + tmpName, | ||
| std::ios::trunc); | ||
| } | ||
| }, | ||
| [files](const char *data, size_t length) { | ||
| if (files->back().tmpName.empty()) | ||
| { | ||
| return; | ||
| } | ||
| auto ¤tFile = files->back().file; | ||
| if (length == 0) | ||
| { | ||
| LOG_INFO << "file finish"; | ||
| if (currentFile.is_open()) | ||
| { | ||
| currentFile.flush(); | ||
| currentFile.close(); | ||
| } | ||
| return; | ||
| } | ||
| LOG_INFO << "data[" << length << "]: "; | ||
| if (currentFile.is_open()) | ||
| { | ||
| LOG_INFO << "write file"; | ||
| currentFile.write(data, length); | ||
| } | ||
| else | ||
| { | ||
| LOG_ERROR << "file not open"; | ||
| } | ||
| }, | ||
| [files, callback = std::move(callback)](std::exception_ptr ex) { | ||
| if (ex) | ||
| { | ||
| try | ||
| { | ||
| std::rethrow_exception(std::move(ex)); | ||
| } | ||
| catch (const StreamError &e) | ||
| { | ||
| LOG_ERROR << "stream error: " << e.what(); | ||
| } | ||
| catch (const std::exception &e) | ||
| { | ||
| LOG_ERROR << "multipart error: " << e.what(); | ||
| } | ||
| auto resp = HttpResponse::newHttpResponse(); | ||
| resp->setStatusCode(k400BadRequest); | ||
| resp->setBody("error\n"); | ||
| callback(resp); | ||
| } | ||
| else | ||
| { | ||
| LOG_INFO << "stream finish, received " << files->size() | ||
| << " files"; | ||
| Json::Value respJson; | ||
| for (const auto &item : *files) | ||
| { | ||
| if (item.tmpName.empty()) | ||
| continue; | ||
| Json::Value entry; | ||
| entry["name"] = item.header.name; | ||
| entry["filename"] = item.header.filename; | ||
| entry["tmpName"] = item.tmpName; | ||
| respJson.append(entry); | ||
| } | ||
| auto resp = HttpResponse::newHttpJsonResponse(respJson); | ||
| callback(resp); | ||
| } | ||
| }); | ||
|
|
||
| stream->setStreamReader(std::move(reader)); | ||
| } | ||
| }; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.