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

content/browser/service_worker/service_worker_url_request_job.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_url_request_job.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
@@ skipping 11 matching lines @@
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/task_runner.h"
 #include "base/task_runner_util.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "content/browser/resource_context_impl.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/service_worker_blob_reader.h"
+#include "content/browser/service_worker/service_worker_data_pipe_reader.h"
 #include "content/browser/service_worker/service_worker_fetch_dispatcher.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
 #include "content/browser/service_worker/service_worker_response_info.h"
-#include "content/browser/service_worker/service_worker_stream_reader.h"
 #include "content/common/resource_request_body_impl.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/public/browser/blob_handle.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/browser/service_worker_context.h"
 #include "content/public/common/referrer.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
@@ skipping 207 matching lines @@
       frame_type_(frame_type),
       fall_back_required_(false),
       body_(body),
       fetch_type_(fetch_type),
       timeout_(timeout),
       weak_factory_(this) {
   DCHECK(delegate_) << "ServiceWorkerURLRequestJob requires a delegate";
 }
 
 ServiceWorkerURLRequestJob::~ServiceWorkerURLRequestJob() {
-  stream_reader_.reset();
+  data_pipe_reader_.reset();
   file_size_resolver_.reset();
 
   if (!ShouldRecordResult())
     return;
   ServiceWorkerMetrics::URLRequestJobResult result =
       ServiceWorkerMetrics::REQUEST_JOB_ERROR_KILLED;
   if (response_body_type_ == STREAM)
     result = ServiceWorkerMetrics::REQUEST_JOB_ERROR_KILLED_WITH_STREAM;
   else if (response_body_type_ == BLOB)
     result = ServiceWorkerMetrics::REQUEST_JOB_ERROR_KILLED_WITH_BLOB;
@@ skipping 30 matching lines @@
   MaybeStartRequest();
 }
 
 void ServiceWorkerURLRequestJob::Start() {
   is_started_ = true;
   MaybeStartRequest();
 }
 
 void ServiceWorkerURLRequestJob::Kill() {
   net::URLRequestJob::Kill();
-  stream_reader_.reset();
+  data_pipe_reader_.reset();
   fetch_dispatcher_.reset();
   blob_reader_.reset();
   weak_factory_.InvalidateWeakPtrs();
 }
 
 net::LoadState ServiceWorkerURLRequestJob::GetLoadState() const {
   // TODO(kinuko): refine this for better debug.
   return net::URLRequestJob::GetLoadState();
 }
 
@@ skipping 34 matching lines @@
 
   // We don't support multiple range requests in one single URL request.
   if (ranges.size() == 1U)
     byte_range_ = ranges[0];
 }
 
 int ServiceWorkerURLRequestJob::ReadRawData(net::IOBuffer* buf, int buf_size) {
   DCHECK(buf);
   DCHECK_GE(buf_size, 0);
 
-  if (stream_reader_)
-    return stream_reader_->ReadRawData(buf, buf_size);
+  if (data_pipe_reader_)
+    return data_pipe_reader_->ReadRawData(buf, buf_size);
   if (blob_reader_)
     return blob_reader_->ReadRawData(buf, buf_size);
 
   return 0;
 }
 
 void ServiceWorkerURLRequestJob::OnResponseStarted() {
   if (response_time_.is_null())
     response_time_ = base::Time::Now();
   CommitResponseHeader();
@@ skipping 175 matching lines @@
   ServiceWorkerMetrics::RecordActivatedWorkerPreparationForMainFrame(
       worker_ready_time_ - request()->creation_time(), initial_worker_status_,
       worker_start_situation_, did_navigation_preload_);
   MaybeReportNavigationPreloadMetrics();
 }
 
 void ServiceWorkerURLRequestJob::DidDispatchFetchEvent(
     ServiceWorkerStatusCode status,
     ServiceWorkerFetchEventResult fetch_result,
     const ServiceWorkerResponse& response,
+    blink::mojom::ServiceWorkerStreamHandlePtr stream_handle,
     const scoped_refptr<ServiceWorkerVersion>& version) {
   // Do not clear |fetch_dispatcher_| if it has dispatched a navigation preload
   // request to keep the mojom::URLLoader related objects in it, because the
   // preload response might still need to be streamed even after calling
   // respondWith().
   if (!did_navigation_preload_) {
     fetch_dispatcher_.reset();
   }
   ServiceWorkerMetrics::RecordFetchEventStatus(IsMainResourceLoad(), status);
 
@@ skipping 45 matching lines @@
   // HttpResponseInfo to show HTTPS padlock.
   // TODO(horo): When we support mixed-content (HTTP) no-cors requests from a
   // ServiceWorker, we have to check the security level of the responses.
   DCHECK(!http_response_info_);
   DCHECK(version);
   const net::HttpResponseInfo* main_script_http_info =
       version->GetMainScriptHttpResponseInfo();
   DCHECK(main_script_http_info);
   http_response_info_.reset(new net::HttpResponseInfo(*main_script_http_info));
 
-  // Set up a request for reading the stream.
-  if (response.stream_url.is_valid()) {
-    DCHECK(response.blob_uuid.empty());
+  // Process stream using mojo's data pipe.
+  if (!stream_handle.is_null()) {
     SetResponseBodyType(STREAM);
     SetResponse(response);
-    stream_reader_.reset(new ServiceWorkerStreamReader(this, version));
-    stream_reader_->Start(response.stream_url);
+    data_pipe_reader_.reset(new ServiceWorkerDataPipeReader(
+        this, version, std::move(stream_handle)));
+    data_pipe_reader_->Start();
     return;
   }
 
   // Set up a request for reading the blob.
   if (!response.blob_uuid.empty() && blob_storage_context_) {
     SetResponseBodyType(BLOB);
     std::unique_ptr<storage::BlobDataHandle> blob_data_handle =
         blob_storage_context_->GetBlobDataFromUUID(response.blob_uuid);
     if (!blob_data_handle) {
       // The renderer gave us a bad blob UUID.
@@ skipping 260 matching lines @@
   DCHECK(!reported_navigation_preload_metrics_);
   reported_navigation_preload_metrics_ = true;
 
   ServiceWorkerMetrics::RecordNavigationPreloadResponse(
       worker_ready_time_ - worker_start_time_,
       navigation_preload_response_time_ - worker_start_time_,
       initial_worker_status_, worker_start_situation_);
 }
 
 }  // namespace content