content/browser/service_worker/service_worker_url_request_job.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/time/time.h"
  14 #include "content/browser/streams/stream_read_observer.h"
  15 #include "content/browser/streams/stream_register_observer.h"
  16 #include "content/common/content_export.h"
  17 #include "content/common/service_worker/service_worker_status_code.h"
  18 #include "content/common/service_worker/service_worker_types.h"
  19 #include "content/public/common/request_context_frame_type.h"
  20 #include "content/public/common/request_context_type.h"
  21 #include "content/public/common/resource_type.h"
  22 #include "net/http/http_byte_range.h"
  23 #include "net/url_request/url_request.h"
  24 #include "net/url_request/url_request_job.h"
  25 #include "third_party/WebKit/public/platform/WebServiceWorkerResponseType.h"
  26 #include "url/gurl.h"
  27
  28 namespace net {
  29 class IOBuffer;
  30 }
  31
  32 namespace storage {
  33 class BlobDataHandle;
  34 class BlobStorageContext;
  35 }
  36
  37 namespace content {
  38
  39 class ResourceContext;
  40 class ResourceRequestBody;
  41 class ServiceWorkerContextCore;
  42 class ServiceWorkerFetchDispatcher;
  43 class ServiceWorkerProviderHost;
  44 class ServiceWorkerVersion;
  45 class Stream;
  46
  47 class CONTENT_EXPORT ServiceWorkerURLRequestJob
  48     : public net::URLRequestJob,
  49       public net::URLRequest::Delegate,
  50       public StreamReadObserver,
  51       public StreamRegisterObserver {
  52  public:
  53   ServiceWorkerURLRequestJob(
  54       net::URLRequest* request,
  55       net::NetworkDelegate* network_delegate,
  56       base::WeakPtr<ServiceWorkerProviderHost> provider_host,
  57       base::WeakPtr<storage::BlobStorageContext> blob_storage_context,
  58       const ResourceContext* resource_context,
  59       FetchRequestMode request_mode,
  60       FetchCredentialsMode credentials_mode,
  61       RequestContextType request_context_type,
  62       RequestContextFrameType frame_type,
  63       scoped_refptr<ResourceRequestBody> body);
  64
  65   // Sets the response type.
  66   void FallbackToNetwork();
  67   void ForwardToServiceWorker();
  68
  69   bool ShouldFallbackToNetwork() const {
  70     return response_type_ == FALLBACK_TO_NETWORK;
  71   }
  72   bool ShouldForwardToServiceWorker() const {
  73     return response_type_ == FORWARD_TO_SERVICE_WORKER;
  74   }
  75
  76   // net::URLRequestJob overrides:
  77   void Start() override;
  78   void Kill() override;
  79   net::LoadState GetLoadState() const override;
  80   bool GetCharset(std::string* charset) override;
  81   bool GetMimeType(std::string* mime_type) const override;
  82   void GetResponseInfo(net::HttpResponseInfo* info) override;
  83   void GetLoadTimingInfo(net::LoadTimingInfo* load_timing_info) const override;
  84   int GetResponseCode() const override;
  85   void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
  86   bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read) override;
  87
  88   // net::URLRequest::Delegate overrides that read the blob from the
  89   // ServiceWorkerFetchResponse.
  90   void OnReceivedRedirect(net::URLRequest* request,
  91                           const net::RedirectInfo& redirect_info,
  92                           bool* defer_redirect) override;
  93   void OnAuthRequired(net::URLRequest* request,
  94                       net::AuthChallengeInfo* auth_info) override;
  95   void OnCertificateRequested(
  96       net::URLRequest* request,
  97       net::SSLCertRequestInfo* cert_request_info) override;
  98   void OnSSLCertificateError(net::URLRequest* request,
  99                              const net::SSLInfo& ssl_info,
 100                              bool fatal) override;
 101   void OnBeforeNetworkStart(net::URLRequest* request, bool* defer) override;
 102   void OnResponseStarted(net::URLRequest* request) override;
 103   void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
 104
 105   // StreamObserver override:
 106   void OnDataAvailable(Stream* stream) override;
 107
 108   // StreamRegisterObserver override:
 109   void OnStreamRegistered(Stream* stream) override;
 110
 111   void GetExtraResponseInfo(
 112       bool* was_fetched_via_service_worker,
 113       bool* was_fallback_required_by_service_worker,
 114       GURL* original_url_via_service_worker,
 115       blink::WebServiceWorkerResponseType* response_type_via_service_worker,
 116       base::TimeTicks* fetch_start_time,
 117       base::TimeTicks* fetch_ready_time,
 118       base::TimeTicks* fetch_end_time) const;
 119
 120  protected:
 121   ~ServiceWorkerURLRequestJob() override;
 122
 123  private:
 124   enum ResponseType {
 125     NOT_DETERMINED,
 126     FALLBACK_TO_NETWORK,
 127     FORWARD_TO_SERVICE_WORKER,
 128   };
 129
 130   // We start processing the request if Start() is called AND response_type_
 131   // is determined.
 132   void MaybeStartRequest();
 133   void StartRequest();
 134
 135   // Creates ServiceWorkerFetchRequest from |request_| and |body_|.
 136   scoped_ptr<ServiceWorkerFetchRequest> CreateFetchRequest();
 137
 138   // Creates BlobDataHandle of the request body from |body_|. This handle
 139   // |request_body_blob_data_handle_| will be deleted when
 140   // ServiceWorkerURLRequestJob is deleted.
 141   bool CreateRequestBodyBlob(std::string* blob_uuid, uint64* blob_size);
 142
 143   // For FORWARD_TO_SERVICE_WORKER case.
 144   void DidPrepareFetchEvent();
 145   void DidDispatchFetchEvent(ServiceWorkerStatusCode status,
 146                              ServiceWorkerFetchEventResult fetch_result,
 147                              const ServiceWorkerResponse& response);
 148
 149   // Populates |http_response_headers_|.
 150   void CreateResponseHeader(int status_code,
 151                             const std::string& status_text,
 152                             const ServiceWorkerHeaderMap& headers);
 153
 154   // Creates |http_response_info_| using |http_response_headers_| and calls
 155   // NotifyHeadersComplete.
 156   void CommitResponseHeader();
 157
 158   // Creates and commits a response header indicating error.
 159   void DeliverErrorResponse();
 160
 161   // Releases the resources for streaming.
 162   void ClearStream();
 163
 164   const net::HttpResponseInfo* http_info() const;
 165
 166   base::WeakPtr<ServiceWorkerProviderHost> provider_host_;
 167
 168   // Timing info to show on the popup in Devtools' Network tab.
 169   net::LoadTimingInfo load_timing_info_;
 170   base::TimeTicks fetch_start_time_;
 171   base::TimeTicks fetch_ready_time_;
 172   base::TimeTicks fetch_end_time_;
 173   base::Time response_time_;
 174
 175   ResponseType response_type_;
 176   bool is_started_;
 177
 178   net::HttpByteRange byte_range_;
 179   scoped_ptr<net::HttpResponseInfo> range_response_info_;
 180   scoped_ptr<net::HttpResponseInfo> http_response_info_;
 181   // Headers that have not yet been committed to |http_response_info_|.
 182   scoped_refptr<net::HttpResponseHeaders> http_response_headers_;
 183   GURL response_url_;
 184   blink::WebServiceWorkerResponseType service_worker_response_type_;
 185
 186   // Used when response type is FORWARD_TO_SERVICE_WORKER.
 187   scoped_ptr<ServiceWorkerFetchDispatcher> fetch_dispatcher_;
 188   base::WeakPtr<storage::BlobStorageContext> blob_storage_context_;
 189   const ResourceContext* resource_context_;
 190   scoped_ptr<net::URLRequest> blob_request_;
 191   scoped_refptr<Stream> stream_;
 192   GURL waiting_stream_url_;
 193   scoped_refptr<net::IOBuffer> stream_pending_buffer_;
 194   int stream_pending_buffer_size_;
 195
 196   FetchRequestMode request_mode_;
 197   FetchCredentialsMode credentials_mode_;
 198   RequestContextType request_context_type_;
 199   RequestContextFrameType frame_type_;
 200   bool fall_back_required_;
 201   // ResourceRequestBody has a collection of BlobDataHandles attached to it
 202   // using the userdata mechanism. So we have to keep it not to free the blobs.
 203   scoped_refptr<ResourceRequestBody> body_;
 204   scoped_ptr<storage::BlobDataHandle> request_body_blob_data_handle_;
 205   scoped_refptr<ServiceWorkerVersion> streaming_version_;
 206
 207   base::WeakPtrFactory<ServiceWorkerURLRequestJob> weak_factory_;
 208
 209   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerURLRequestJob);
 210 };
 211
 212 }  // namespace content
 213
 214 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_URL_REQUEST_JOB_H_