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// Copyright 2015 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/cache_storage/cache_storage_blob_to_disk_cache.h"
#include <utility>
#include "base/logging.h"
#include "net/base/io_buffer.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "storage/browser/blob/blob_data_handle.h"
#include "storage/browser/blob/blob_url_request_job_factory.h"
namespace content {
const int CacheStorageBlobToDiskCache::kBufferSize = 1024 * 512;
CacheStorageBlobToDiskCache::CacheStorageBlobToDiskCache()
: cache_entry_offset_(0),
disk_cache_body_index_(0),
buffer_(new net::IOBufferWithSize(kBufferSize)),
weak_ptr_factory_(this) {
}
CacheStorageBlobToDiskCache::~CacheStorageBlobToDiskCache() {
if (blob_request_)
request_context_getter_->RemoveObserver(this);
}
void CacheStorageBlobToDiskCache::StreamBlobToCache(
disk_cache::ScopedEntryPtr entry,
int disk_cache_body_index,
net::URLRequestContextGetter* request_context_getter,
scoped_ptr<storage::BlobDataHandle> blob_data_handle,
const EntryAndBoolCallback& callback) {
DCHECK(entry);
DCHECK_LE(0, disk_cache_body_index);
DCHECK(blob_data_handle);
DCHECK(!blob_request_);
DCHECK(request_context_getter);
if (!request_context_getter->GetURLRequestContext()) {
callback.Run(std::move(entry), false /* success */);
return;
}
disk_cache_body_index_ = disk_cache_body_index;
entry_ = std::move(entry);
callback_ = callback;
request_context_getter_ = request_context_getter;
blob_request_ = storage::BlobProtocolHandler::CreateBlobRequest(
std::move(blob_data_handle),
request_context_getter->GetURLRequestContext(), this);
request_context_getter_->AddObserver(this);
blob_request_->Start();
}
void CacheStorageBlobToDiskCache::OnResponseStarted(net::URLRequest* request) {
if (!request->status().is_success()) {
RunCallbackAndRemoveObserver(false);
return;
}
ReadFromBlob();
}
void CacheStorageBlobToDiskCache::OnReadCompleted(net::URLRequest* request,
int bytes_read) {
if (!request->status().is_success()) {
RunCallbackAndRemoveObserver(false);
return;
}
if (bytes_read == 0) {
RunCallbackAndRemoveObserver(true);
return;
}
net::CompletionCallback cache_write_callback =
base::Bind(&CacheStorageBlobToDiskCache::DidWriteDataToEntry,
weak_ptr_factory_.GetWeakPtr(), bytes_read);
int rv = entry_->WriteData(disk_cache_body_index_, cache_entry_offset_,
buffer_.get(), bytes_read, cache_write_callback,
true /* truncate */);
if (rv != net::ERR_IO_PENDING)
cache_write_callback.Run(rv);
}
void CacheStorageBlobToDiskCache::OnReceivedRedirect(
net::URLRequest* request,
const net::RedirectInfo& redirect_info,
bool* defer_redirect) {
NOTREACHED();
}
void CacheStorageBlobToDiskCache::OnAuthRequired(
net::URLRequest* request,
net::AuthChallengeInfo* auth_info) {
NOTREACHED();
}
void CacheStorageBlobToDiskCache::OnCertificateRequested(
net::URLRequest* request,
net::SSLCertRequestInfo* cert_request_info) {
NOTREACHED();
}
void CacheStorageBlobToDiskCache::OnSSLCertificateError(
net::URLRequest* request,
const net::SSLInfo& ssl_info,
bool fatal) {
NOTREACHED();
}
void CacheStorageBlobToDiskCache::OnBeforeNetworkStart(net::URLRequest* request,
bool* defer) {
NOTREACHED();
}
void CacheStorageBlobToDiskCache::OnContextShuttingDown() {
DCHECK(blob_request_);
RunCallbackAndRemoveObserver(false);
}
void CacheStorageBlobToDiskCache::ReadFromBlob() {
int bytes_read = 0;
bool done = blob_request_->Read(buffer_.get(), buffer_->size(), &bytes_read);
if (done)
OnReadCompleted(blob_request_.get(), bytes_read);
}
void CacheStorageBlobToDiskCache::DidWriteDataToEntry(int expected_bytes,
int rv) {
if (rv != expected_bytes) {
RunCallbackAndRemoveObserver(false);
return;
}
cache_entry_offset_ += rv;
ReadFromBlob();
}
void CacheStorageBlobToDiskCache::RunCallbackAndRemoveObserver(bool success) {
DCHECK(request_context_getter_);
request_context_getter_->RemoveObserver(this);
blob_request_.reset();
callback_.Run(std::move(entry_), success);
}
} // namespace content
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