Update changelog. Request/Response: use ObjectHandle for stream transfers.

changelog/1.3.0.md

@@ -14,6 +14,7 @@ Contents:
 - [ConnectionProviderSwitch](#connectionproviderswitch)
 - [Proper Server Stoppage](#proper-server-stoppage)
 - [TemporaryFile](#temporaryfile)
+- [Better Multipart](#better-multipart)
 - [Response::getBody()](#responsegetbody)
 - [data::stream::FIFOStream](#datastreamfifostream)
 - [data::stream::BufferedInputStream](#datastreambufferedinputstream)
@@ -243,7 +244,7 @@ Now call to `HttpConnectionHandler::stop()`, `AsyncHttpConnectionHandler::stop()
 
 ## TemporaryFile
 
-Introduce `oatpp::data::share::TemporaryFile`.
+Introduce `oatpp::data::resource::TemporaryFile`.
 
 Use-case:
 
@@ -251,20 +252,72 @@ Temporary file resolves concurrency issues during file uploads.
 Also, a temporary file ensures that partially uploaded (due to errors/exceptions) resources will be automatically deleted at the end of the block.
 
 ```cpp
+#include "oatpp/core/data/resource/TemporaryFile.hpp"
+
+...
+
 ENDPOINT("POST", "/upload", upload,
          REQUEST(std::shared_ptr<IncomingRequest>, request))
 {
-  oatpp::data::share::TemporaryFile tmp("/tmp"); // create random file in '/tmp' folder
-
-  auto stream = tmp.openOutputStream();
-  request->transferBody(&stream); // transfer body to temporary file
-
-  tmp.moveFile("/path/to/permanent/storage/avatar.png"); // move file to permanent storage
-
+  /* create random file in '/tmp' folder */
+  oatpp::data::resource::TemporaryFile tmp("/tmp");
+    
+  /* transfer body to temporary file */
+  request->transferBody(tmp.openOutputStream());
+    
+  /* move file to permanent storage */
+  OATPP_ASSERT_HTTP(tmp.moveFile("/path/to/permanent/storage/avatar.png"), Status::CODE_500, "Failed to save file")
+    
+  /* return 200 */
   return createResponse(Status::CODE_200, "OK");
 }
 ```
 
+## Better Multipart
+
+Multipart API has been changed and improved.   
+Now it's possible to upload multiple files using `TemporaryFile` and keep track of 
+all parts and their corresponding data resources. 
+
+```cpp
+#include "oatpp/web/mime/multipart/TemporaryFileProvider.hpp"
+#include "oatpp/web/mime/multipart/Reader.hpp"
+#include "oatpp/web/mime/multipart/PartList.hpp"
+
+...
+
+namespace multipart = oatpp::web::mime::multipart;
+
+...
+
+ENDPOINT("POST", "upload", upload,
+         REQUEST(std::shared_ptr<IncomingRequest>, request))
+{
+
+  /* create multipart object */
+  multipart::PartList multipart(request->getHeaders());
+
+  /* create multipart reader */
+  multipart::Reader multipartReader(&multipart);
+
+  /* setup reader to stream parts to a temporary files by default */
+  multipartReader.setDefaultPartReader(multipart::createTemporaryFilePartReader("/Users/leonid/Documents/tmp"));
+
+  /* upload multipart data */
+  request->transferBody(&multipartReader);
+
+  /* list all parts and locations to corresponding temporary files */
+  auto parts = multipart.getAllParts();
+  for(auto& p : parts) {
+    OATPP_LOGD("part", "name=%s, location=%s", p->getName()->c_str(), p->getPayload()->getLocation()->c_str());
+  }
+
+  /* return 200 */
+  return createResponse(Status::CODE_200, "OK");
+
+}
+```
+
 ## Response::getBody()
 
 `oatpp::web::protocol::http::outgoing::Response` has a new method `getBody()` to retreive the body of the response.

src/oatpp/web/protocol/http/incoming/Request.cpp

@@ -138,12 +138,12 @@ const data::Bundle& Request::getBundle() const {
   return m_bundle;
 }
 
-void Request::transferBody(data::stream::WriteCallback* writeCallback) const {
-  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), writeCallback, m_connection.get());
+void Request::transferBody(const base::ObjectHandle<data::stream::WriteCallback>& writeCallback) const {
+  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), writeCallback.get(), m_connection.get());
 }
 
-void Request::transferBodyToStream(oatpp::data::stream::OutputStream* toStream) const {
-  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), toStream, m_connection.get());
+void Request::transferBodyToStream(const base::ObjectHandle<oatpp::data::stream::OutputStream>& toStream) const {
+  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), toStream.get(), m_connection.get());
 }
 
 oatpp::String Request::readBodyToString() const {

src/oatpp/web/protocol/http/incoming/Request.hpp

@@ -240,13 +240,13 @@ public:
    * Read body chunk by chunk and pass chunks to the `writeCallback`.
    * @param writeCallback - &id:oatpp::data::stream::WriteCallback;.
    */
-  void transferBody(data::stream::WriteCallback* writeCallback) const;
+  void transferBody(const base::ObjectHandle<data::stream::WriteCallback>& writeCallback) const;
 
   /**
    * Stream content of the body-stream to toStream
    * @param toStream
    */
-  void transferBodyToStream(oatpp::data::stream::OutputStream* toStream) const;
+  void transferBodyToStream(const base::ObjectHandle<data::stream::OutputStream>& toStream) const;
 
   /**
    * Transfer body stream to string
@@ -261,7 +261,7 @@ public:
    * @return DTO
    */
   template<class Wrapper>
-  Wrapper readBodyToDto(data::mapping::ObjectMapper* objectMapper) const {
+  Wrapper readBodyToDto(const base::ObjectHandle<data::mapping::ObjectMapper>& objectMapper) const {
     return objectMapper->readFromString<Wrapper>(m_bodyDecoder->decodeToString(m_headers, m_bodyStream.get(), m_connection.get()));
   }
   

src/oatpp/web/protocol/http/incoming/Response.cpp

@@ -103,12 +103,12 @@ std::shared_ptr<const http::incoming::BodyDecoder> Response::getBodyDecoder() co
   return m_bodyDecoder;
 }
 
-void Response::transferBody(data::stream::WriteCallback* writeCallback) const {
-  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), writeCallback, m_connection.get());
+void Response::transferBody(const base::ObjectHandle<data::stream::WriteCallback>& writeCallback) const {
+  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), writeCallback.get(), m_connection.get());
 }
 
-void Response::transferBodyToStream(oatpp::data::stream::OutputStream* toStream) const {
-  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), toStream, m_connection.get());
+void Response::transferBodyToStream(const base::ObjectHandle<oatpp::data::stream::OutputStream>& toStream) const {
+  m_bodyDecoder->decode(m_headers, m_bodyStream.get(), toStream.get(), m_connection.get());
 }
 
 oatpp::String Response::readBodyToString() const {

src/oatpp/web/protocol/http/incoming/Response.hpp

@@ -185,7 +185,7 @@ public:
    * Get raw body stream.
    * @return - raw body stream as &id:oatpp::data::stream::InputStream;.
    */
-  std::shared_ptr<oatpp::data::stream::InputStream> getBodyStream() const;
+  std::shared_ptr<data::stream::InputStream> getBodyStream() const;
 
   /**
    * Get body decoder configured for this response.
@@ -198,14 +198,14 @@ public:
    * Read body chunk by chunk and pass chunks to the `writeCallback`.
    * @param writeCallback - &id:oatpp::data::stream::WriteCallback;.
    */
-  void transferBody(data::stream::WriteCallback* writeCallback) const;
+  void transferBody(const base::ObjectHandle<data::stream::WriteCallback>& writeCallback) const;
 
   /**
    * Decode and transfer body to toStream.
    * Use case example - stream huge body directly to file using relatively small buffer.
    * @param toStream - pointer to &id:oatpp::data::stream::OutputStream;.
    */
-  void transferBodyToStream(oatpp::data::stream::OutputStream* toStream) const;
+  void transferBodyToStream(const base::ObjectHandle<data::stream::OutputStream>& toStream) const;
 
   /**
    * Decode and read body to &id:oatpp::String;.
@@ -220,8 +220,8 @@ public:
    * @return - deserialized DTO object.
    */
   template<class Wrapper>
-  Wrapper readBodyToDto(oatpp::data::mapping::ObjectMapper* objectMapper) const {
-    return m_bodyDecoder->decodeToDto<Wrapper>(m_headers, m_bodyStream.get(), m_connection.get(), objectMapper);
+  Wrapper readBodyToDto(const base::ObjectHandle<data::mapping::ObjectMapper>& objectMapper) const {
+    return m_bodyDecoder->decodeToDto<Wrapper>(m_headers, m_bodyStream.get(), m_connection.get(), objectMapper.get());
   }
   
   // Async
@@ -240,7 +240,7 @@ public:
    * @param toStream - `std::shared_ptr` to &id:oatpp::data::stream::OutputStream;.
    * @return - &id:oatpp::async::CoroutineStarter;.
    */
-  oatpp::async::CoroutineStarter transferBodyToStreamAsync(const std::shared_ptr<oatpp::data::stream::OutputStream>& toStream) const;
+  oatpp::async::CoroutineStarter transferBodyToStreamAsync(const std::shared_ptr<data::stream::OutputStream>& toStream) const;
 
   /**
    * Same as &l:Response::readBodyToString (); but Async.
@@ -258,7 +258,7 @@ public:
    */
   template<class Wrapper>
   oatpp::async::CoroutineStarterForResult<const Wrapper&>
-  readBodyToDtoAsync(const std::shared_ptr<oatpp::data::mapping::ObjectMapper>& objectMapper) const {
+  readBodyToDtoAsync(const std::shared_ptr<data::mapping::ObjectMapper>& objectMapper) const {
     return m_bodyDecoder->decodeToDtoAsync<Wrapper>(m_headers, m_bodyStream, m_connection, objectMapper);
   }