Implement memory-persistent registration

content/browser/service_worker/service_worker_context.h

 // Copyright 2013 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_CONTEXT_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_H_
 
+#include <map>
+#include <string>
+
+#include "base/bind.h"
+#include "base/containers/hash_tables.h"
+#include "base/containers/scoped_ptr_hash_map.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "content/browser/service_worker/service_worker_registration.h"
 #include "content/common/content_export.h"
+#include "url/gurl.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace quota {
 class QuotaManagerProxy;
 }
 
 namespace content {
 
+class ServiceWorkerRegistration;
+
 // This class manages metadata associated with all service workers,
 // including:
 // - persistent storage of pattern -> service worker scripts
 // - initialization and initial installation of service workers
 // - dispatching of non-fetch events to service workers
 class CONTENT_EXPORT ServiceWorkerContext
-    : public base::RefCountedThreadSafe<ServiceWorkerContext> {
+    : NON_EXPORTED_BASE(
+          public base::RefCountedThreadSafe<ServiceWorkerContext>) {
  public:
   // This is owned by the StoragePartition, which will supply it with
   // the local path on disk.
   ServiceWorkerContext(const base::FilePath& path,
                        quota::QuotaManagerProxy* quota_manager_proxy);
 
   bool IsEnabled();
+  typedef base::Callback<void(int64)> ResponseCallback;

[kinuko, 2013/11/08 09:08:21]

nit: please move this typedef before all other methods/ctor, right after public:

[alecflett, 2013/11/08 22:50:54]

Done.

+
+  // The callback will be called on the IO thread.
+  void RegisterServiceWorker(const GURL& pattern,
+                             const GURL& script_url,
+                             const ResponseCallback& callback);
+
+  // The callback will be called on the IO thread.
+  void UnregisterServiceWorker(const GURL& pattern,
+                               const base::Closure& callback);
+
+  // TODO(alecflett): These exist primarily for testing. As this class
+  // evolves to have persistent storage, they will need to become
+  // asynchronous.
+  scoped_refptr<ServiceWorkerRegistration> RegistrationForDocument(
+      const GURL& document_url);
+  scoped_refptr<ServiceWorkerRegistration> RegistrationForPattern(
+      const GURL& pattern);
+
+  static bool PatternMatches(const GURL& pattern, const GURL& script_url);
+
+  // TODO(alecflett): Propagate errors. Are there any?
+  ServiceWorkerRegistration* Register(const GURL& pattern,
+                                      const GURL& script_url);
+  void Unregister(const GURL& pattern);

[kinuko, 2013/11/08 09:08:21]

We do seem to have lots of register/registration methods, can some of them be
private?  I want to make it clear that what public methods each class will
expose.

[alecflett, 2013/11/08 22:50:54]

Done.
They were there for testing, I found a better way (FRIEND_TEST*())

 
  private:
   friend class base::RefCountedThreadSafe<ServiceWorkerContext>;
   ~ServiceWorkerContext();
 
   scoped_refptr<quota::QuotaManagerProxy> quota_manager_proxy_;
   base::FilePath path_;
 
+  // Mapping of url pattern -> script instance
+  // eventually the registration should be stored in leveldb, not in memory.
+  typedef std::map<GURL, scoped_refptr<ServiceWorkerRegistration> >

[kinuko, 2013/11/08 09:08:21]

I think this has been discussed once, but do we continue to use GURL for URL
pattern?  I'm feeling that's weird.

[alecflett, 2013/11/08 22:50:54]

I'm fine changing it. Can I do that in a separate CL?

+      PatternToRegistrationMap;
+
+  PatternToRegistrationMap registration_by_pattern_;
+
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_H_