New blobstoragecontext for use in the main browser process, not plugged in yet.

webkit/blob/blob_storage_host.cc

+// Copyright (c) 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.
+
+#include "webkit/blob/blob_storage_host.h"
+
+#include "base/sequenced_task_runner.h"
+#include "googleurl/src/gurl.h"
+#include "webkit/blob/blob_data_handle.h"
+#include "webkit/blob/blob_storage_context.h"
+
+namespace webkit_blob {
+
+BlobStorageHost::BlobStorageHost(BlobStorageContext* context)
+    : context_(context->AsWeakPtr()) {
+}
+
+BlobStorageHost::~BlobStorageHost() {
+  if (!context_)
+    return;
+  for (std::set<GURL>::iterator iter = public_blob_urls_.begin();
+       iter != public_blob_urls_.end(); ++iter) {
+    context_->RevokePublicBlobURL(*iter);
+  }
+  for (BlobReferenceMap::iterator iter = blobs_inuse_map_.begin();
+       iter != blobs_inuse_map_.end(); ++iter) {
+    for (int i = 0; i < iter->second; ++i)
+      context_->DecrementBlobRefCount(iter->first);
+  }
+}
+
+bool BlobStorageHost::StartBuildingBlob(const std::string& uuid) {
+  if (!context_ || uuid.empty() || context_->IsInUse(uuid))
+    return false;
+  context_->StartBuildingBlob(uuid);
+  blobs_inuse_map_[uuid] = 1;
+  return true;
+}
+
+bool BlobStorageHost::AppendBlobDataItem(
+    const std::string& uuid, const BlobData::Item& data_item) {
+  if (!context_ || !IsBeingBuiltInHost(uuid))
+    return false;
+  context_->AppendBlobDataItem(uuid, data_item);
+  return true;
+}
+
+bool BlobStorageHost::CancelBuildingBlob(const std::string& uuid) {
+  if (!context_ || !IsBeingBuiltInHost(uuid))
+    return false;
+  blobs_inuse_map_.erase(uuid);
+  context_->CancelBuildingBlob(uuid);
+  return true;
+}
+
+bool BlobStorageHost::FinishBuildingBlob(
+    const std::string& uuid, const std::string& content_type) {
+  if (!context_ || !IsBeingBuiltInHost(uuid))
+    return false;
+  context_->FinishBuildingBlob(uuid, content_type);
+  return true;
+}
+
+bool BlobStorageHost::IncrementBlobRefCount(const std::string& uuid) {
+  if (!context_ || !context_->IsInUse(uuid) || context_->IsBeingBuilt(uuid))
+    return false;
+  context_->IncrementBlobRefCount(uuid);
+  blobs_inuse_map_[uuid] += 1;
+  return true;
+}
+
+bool BlobStorageHost::DecrementBlobRefCount(const std::string& uuid) {
+  if (!context_ || !IsInUseInHost(uuid))
+    return false;
+  context_->DecrementBlobRefCount(uuid);
+  blobs_inuse_map_[uuid] -= 1;
+  if (blobs_inuse_map_[uuid] == 0)
+    blobs_inuse_map_.erase(uuid);
+  return true;
+}
+
+bool BlobStorageHost::RegisterPublicBlobURL(
+    const GURL& blob_url, const std::string& uuid) {
+  if (!context_ || !IsInUseInHost(uuid) || context_->IsUrlRegistered(blob_url))
+    return false;
+  context_->RegisterPublicBlobURL(blob_url, uuid);
+  public_blob_urls_.insert(blob_url);
+  return true;
+}
+
+bool BlobStorageHost::RevokePublicBlobURL(const GURL& blob_url) {
+  if (!context_ || !IsUrlRegisteredInHost(blob_url))
+    return false;
+  context_->RevokePublicBlobURL(blob_url);
+  public_blob_urls_.erase(blob_url);
+  return true;
+}
+
+bool BlobStorageHost::IsInUseInHost(const std::string& uuid) {
+  return blobs_inuse_map_.find(uuid) != blobs_inuse_map_.end();
+}
+
+bool BlobStorageHost::IsBeingBuiltInHost(const std::string& uuid) {
+  return IsInUseInHost(uuid) && context_->IsBeingBuilt(uuid);
+}
+
+bool BlobStorageHost::IsUrlRegisteredInHost(const GURL& blob_url) {
+  return public_blob_urls_.find(blob_url) != public_blob_urls_.end();
+}
+
+}  // namespace webkit_blob