More groundwork for flat file based response storage.

webkit/appcache/appcache_request_handler.cc

 // Copyright (c) 2011 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 "webkit/appcache/appcache_request_handler.h"
 
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_job.h"
 #include "webkit/appcache/appcache.h"
 #include "webkit/appcache/appcache_policy.h"
 #include "webkit/appcache/appcache_url_request_job.h"
 
 namespace appcache {
 
-AppCacheRequestHandler::AppCacheRequestHandler(AppCacheHost* host,
-                                               ResourceType::Type resource_type)
+AppCacheRequestHandler::AppCacheRequestHandler(
+    AppCacheHost* host, ResourceType::Type resource_type)
     : host_(host), resource_type_(resource_type),
-      is_waiting_for_cache_selection_(false), found_cache_id_(0),
-      found_network_namespace_(false), cache_entry_not_found_(false) {
+      is_waiting_for_cache_selection_(false), found_group_id_(0),
+      found_cache_id_(0), found_network_namespace_(false),
+      cache_entry_not_found_(false) {
   DCHECK(host_);
   host_->AddObserver(this);
 }
 
 AppCacheRequestHandler::~AppCacheRequestHandler() {
   if (host_) {
     storage()->CancelDelegateCallbacks(this);
     host_->RemoveObserver(this);
   }
 }
@@ skipping 66 matching lines @@
   if (request->url().GetOrigin() == location.GetOrigin())
     return NULL;
 
   DCHECK(!job_);  // our jobs never generate redirects
 
   if (found_fallback_entry_.has_response_id()) {
     // 6.9.6, step 4: If this results in a redirect to another origin,
     // get the resource of the fallback entry.
     job_ = new AppCacheURLRequestJob(request, storage());
     DeliverAppCachedResponse(
-        found_fallback_entry_, found_cache_id_, found_manifest_url_,
-        true, found_fallback_url_);
+        found_fallback_entry_, found_cache_id_, found_group_id_,
+        found_manifest_url_,  true, found_fallback_url_);
   } else if (!found_network_namespace_) {
     // 6.9.6, step 6: Fail the resource load.
     job_ = new AppCacheURLRequestJob(request, storage());
     DeliverErrorResponse();
   } else {
     // 6.9.6 step 3 and 5: Fetch the resource normally.
   }
 
   return job_;
 }
@@ skipping 30 matching lines @@
     std::string header_value;
     request->GetResponseHeaderByName(kFallbackOverrideHeader, &header_value);
     if (header_value == kFallbackOverrideValue)
       return NULL;
   }
 
   // 6.9.6, step 4: If this results in a 4xx or 5xx status code
   // or there were network errors, get the resource of the fallback entry.
   job_ = new AppCacheURLRequestJob(request, storage());
   DeliverAppCachedResponse(
-      found_fallback_entry_, found_cache_id_,  found_manifest_url_,
-      true, found_fallback_url_);
+      found_fallback_entry_, found_cache_id_, found_group_id_,
+      found_manifest_url_, true, found_fallback_url_);
   return job_;
 }
 
 void AppCacheRequestHandler::OnDestructionImminent(AppCacheHost* host) {
   storage()->CancelDelegateCallbacks(this);
   host_ = NULL;  // no need to RemoveObserver, the host is being deleted
 
   // Since the host is being deleted, we don't have to complete any job
   // that is current running. It's destined for the bit bucket anyway.
   if (job_) {
     job_->Kill();
     job_ = NULL;
   }
 }
 
 void AppCacheRequestHandler::DeliverAppCachedResponse(
-    const AppCacheEntry& entry, int64 cache_id, const GURL& manifest_url,
-    bool is_fallback, const GURL& fallback_url) {
+    const AppCacheEntry& entry, int64 cache_id, int64 group_id,
+    const GURL& manifest_url,  bool is_fallback, const GURL& fallback_url) {
   DCHECK(host_ && job_ && job_->is_waiting());
   DCHECK(entry.has_response_id());
 
   if (ResourceType::IsFrame(resource_type_) && is_fallback) {
     DCHECK(!fallback_url.is_empty());
     host_->NotifyMainResourceFallback(fallback_url);
   }
 
-  job_->DeliverAppCachedResponse(manifest_url, cache_id, entry, is_fallback);
+  job_->DeliverAppCachedResponse(manifest_url, group_id, cache_id,
+                                 entry, is_fallback);
 }
 
 void AppCacheRequestHandler::DeliverErrorResponse() {
   DCHECK(job_ && job_->is_waiting());
   job_->DeliverErrorResponse();
 }
 
 void AppCacheRequestHandler::DeliverNetworkResponse() {
   DCHECK(job_ && job_->is_waiting());
   job_->DeliverNetworkResponse();
@@ skipping 14 matching lines @@
   // We may have to wait for our storage query to complete, but
   // this query can also complete syncrhonously.
   job_ = new AppCacheURLRequestJob(request, storage());
   storage()->FindResponseForMainRequest(
       request->url(), preferred_manifest_url, this);
 }
 
 void AppCacheRequestHandler::OnMainResponseFound(
     const GURL& url, const AppCacheEntry& entry,
     const GURL& fallback_url, const AppCacheEntry& fallback_entry,
-    int64 cache_id, const GURL& manifest_url) {
+    int64 cache_id, int64 group_id, const GURL& manifest_url) {
   DCHECK(job_);
   DCHECK(host_);
   DCHECK(is_main_resource());
   DCHECK(!entry.IsForeign());
   DCHECK(!fallback_entry.IsForeign());
   DCHECK(!(entry.has_response_id() && fallback_entry.has_response_id()));
 
   if (!job_)
     return;
 
@@ skipping 20 matching lines @@
     host_->LoadMainResourceCache(cache_id);
     host_->set_preferred_manifest_url(manifest_url);
   }
 
   // 6.11.1 Navigating across documents, steps 10 and 14.
 
   found_entry_ = entry;
   found_fallback_url_ = fallback_url;
   found_fallback_entry_ = fallback_entry;
   found_cache_id_ = cache_id;
+  found_group_id_ = group_id;
   found_manifest_url_ = manifest_url;
   found_network_namespace_ = false;  // not applicable to main requests
 
   if (found_entry_.has_response_id()) {
     DeliverAppCachedResponse(
-        found_entry_, found_cache_id_, found_manifest_url_,
+        found_entry_, found_cache_id_, found_group_id_, found_manifest_url_,
         false, GURL());
   } else {
     DeliverNetworkResponse();
   }
 }
 
 // Sub-resource handling ----------------------------------------------
 
 void AppCacheRequestHandler::MaybeLoadSubResource(
     net::URLRequest* request) {
@@ skipping 28 matching lines @@
   AppCache* cache = host_->associated_cache();
   storage()->FindResponseForSubRequest(
       host_->associated_cache(), url,
       &found_entry_, &found_fallback_entry_, &found_network_namespace_);
 
   if (found_entry_.has_response_id()) {
     // Step 2: If there's an entry, get it instead.
     DCHECK(!found_network_namespace_ &&
            !found_fallback_entry_.has_response_id());
     found_cache_id_ = cache->cache_id();
+    found_group_id_ = cache->owning_group()->group_id();
     found_manifest_url_ = cache->owning_group()->manifest_url();
     DeliverAppCachedResponse(
-        found_entry_, found_cache_id_, found_manifest_url_,
+        found_entry_, found_cache_id_, found_group_id_, found_manifest_url_,
         false, GURL());
     return;
   }
 
   if (found_fallback_entry_.has_response_id()) {
     // Step 4: Fetch the resource normally, if this results
     // in certain conditions, then use the fallback.
     DCHECK(!found_network_namespace_ &&
            !found_entry_.has_response_id());
     found_cache_id_ = cache->cache_id();
@@ skipping 26 matching lines @@
   if (!host_->associated_cache() ||
       !host_->associated_cache()->is_complete()) {
     DeliverNetworkResponse();
     return;
   }
 
   ContinueMaybeLoadSubResource();
 }
 
 }  // namespace appcache