ServiceWorker: Use mojo's data pipe for respondWith(stream)

content/browser/service_worker/service_worker_url_request_job.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/optional.h"
 #include "base/time/time.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_metrics.h"
 #include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_event_dispatcher.mojom.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/public/common/request_context_frame_type.h"
 #include "content/public/common/request_context_type.h"
 #include "content/public/common/resource_type.h"
+#include "mojo/public/cpp/system/data_pipe.h"
 #include "net/http/http_byte_range.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 #include "net/url_request/url_request_status.h"
 #include "storage/common/blob_storage/blob_storage_constants.h"
 #include "third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerResponseType.h"
 #include "url/gurl.h"
 
 namespace net {
 class IOBuffer;
 }  // namespace net
 
 namespace storage {
 class BlobDataHandle;
 class BlobStorageContext;
 }  // namespace storage
 
 namespace content {
 
 class ResourceContext;
 class ResourceRequestBodyImpl;
 class ServiceWorkerBlobReader;
-class ServiceWorkerStreamReader;
+class ServiceWorkerDataPipeReader;
 class ServiceWorkerFetchDispatcher;
 class ServiceWorkerVersion;
-class Stream;
 
 class CONTENT_EXPORT ServiceWorkerURLRequestJob : public net::URLRequestJob {
  public:
   class CONTENT_EXPORT Delegate {
    public:
     virtual ~Delegate() {}
 
     // Will be invoked before the request is restarted. The caller
     // can use this opportunity to grab state from the
     // ServiceWorkerURLRequestJob to determine how it should behave when the
@@ skipping 68 matching lines @@
   void Kill() override;
   net::LoadState GetLoadState() const override;
   bool GetCharset(std::string* charset) override;
   bool GetMimeType(std::string* mime_type) const override;
   void GetResponseInfo(net::HttpResponseInfo* info) override;
   void GetLoadTimingInfo(net::LoadTimingInfo* load_timing_info) const override;
   void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
   int ReadRawData(net::IOBuffer* buf, int buf_size) override;
 
   //----------------------------------------------------------------------------
-  // The following are intended for use by ServiceWorker(Blob|Stream)Reader.
-  void OnResponseStarted();
-  void OnReadRawDataComplete(int bytes_read);
-  void RecordResult(ServiceWorkerMetrics::URLRequestJobResult result);
+  // The following are intended for use by ServiceWorker(Blob|DataPipe)Reader.
+  virtual void OnResponseStarted();
+  virtual void OnReadRawDataComplete(int bytes_read);
+  virtual void RecordResult(ServiceWorkerMetrics::URLRequestJobResult result);
   //----------------------------------------------------------------------------
 
   base::WeakPtr<ServiceWorkerURLRequestJob> GetWeakPtr();
 
  private:
   class FileSizeResolver;
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerControlleeRequestHandlerTest,
                            LostActiveVersion);
 
   enum ResponseType {
@@ skipping 24 matching lines @@
   // This must not be called until all files in |body_| with unknown size have
   // their sizes populated.
   void CreateRequestBodyBlob(std::string* blob_uuid, uint64_t* blob_size);
 
   // For FORWARD_TO_SERVICE_WORKER case.
   void DidPrepareFetchEvent(scoped_refptr<ServiceWorkerVersion> version);
   void DidDispatchFetchEvent(
       ServiceWorkerStatusCode status,
       ServiceWorkerFetchEventResult fetch_result,
       const ServiceWorkerResponse& response,
+      blink::mojom::ServiceWorkerStreamHandlePtr body_as_stream,
       const scoped_refptr<ServiceWorkerVersion>& version);
   void SetResponse(const ServiceWorkerResponse& response);
 
   // Populates |http_response_headers_|.
   void CreateResponseHeader(int status_code,
                             const std::string& status_text,
                             const ServiceWorkerHeaderMap& headers);
 
   // Creates |http_response_info_| using |http_response_headers_| and calls
   // NotifyHeadersComplete.
@@ skipping 95 matching lines @@
   // Headers that have not yet been committed to |http_response_info_|.
   scoped_refptr<net::HttpResponseHeaders> http_response_headers_;
   std::vector<GURL> response_url_list_;
   blink::WebServiceWorkerResponseType service_worker_response_type_;
 
   // Used when response type is FORWARD_TO_SERVICE_WORKER.
   std::unique_ptr<ServiceWorkerFetchDispatcher> fetch_dispatcher_;
   std::string client_id_;
   base::WeakPtr<storage::BlobStorageContext> blob_storage_context_;
   const ResourceContext* resource_context_;
-  // Only one of |blob_reader_| and |stream_reader_| can be non-null.
+  // Only one of |blob_reader_| and |data_pipe_reader_| can be non-null.
   std::unique_ptr<ServiceWorkerBlobReader> blob_reader_;
-  std::unique_ptr<ServiceWorkerStreamReader> stream_reader_;
+  std::unique_ptr<ServiceWorkerDataPipeReader> data_pipe_reader_;
 
   FetchRequestMode request_mode_;
   FetchCredentialsMode credentials_mode_;
   FetchRedirectMode redirect_mode_;
   const ResourceType resource_type_;
   RequestContextType request_context_type_;
   RequestContextFrameType frame_type_;
   bool fall_back_required_;
   // ResourceRequestBody has a collection of BlobDataHandles attached to it
   // using the userdata mechanism. So we have to keep it not to free the blobs.
@@ skipping 13 matching lines @@
   std::unique_ptr<FileSizeResolver> file_size_resolver_;
 
   base::WeakPtrFactory<ServiceWorkerURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerURLRequestJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_