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// Copyright 2014 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 "sync/internal_api/public/attachments/in_memory_attachment_store.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/memory/scoped_ptr.h"
#include "base/sequenced_task_runner.h"
namespace syncer {
namespace {
void AppendMetadata(AttachmentMetadataList* list,
const Attachment& attachment) {
list->push_back(
AttachmentMetadata(attachment.GetId(), attachment.GetData()->size()));
}
} // namespace
InMemoryAttachmentStore::InMemoryAttachmentStore(
const scoped_refptr<base::SequencedTaskRunner>& callback_task_runner)
: AttachmentStoreBackend(callback_task_runner) {
// Object is created on one thread but used on another.
DetachFromThread();
}
InMemoryAttachmentStore::~InMemoryAttachmentStore() {
}
void InMemoryAttachmentStore::Init(
const AttachmentStore::InitCallback& callback) {
DCHECK(CalledOnValidThread());
PostCallback(base::Bind(callback, AttachmentStore::SUCCESS));
}
void InMemoryAttachmentStore::Read(
AttachmentStore::Component component,
const AttachmentIdList& ids,
const AttachmentStore::ReadCallback& callback) {
DCHECK(CalledOnValidThread());
AttachmentStore::Result result_code = AttachmentStore::SUCCESS;
scoped_ptr<AttachmentMap> result_map(new AttachmentMap);
scoped_ptr<AttachmentIdList> unavailable_attachments(new AttachmentIdList);
for (const auto& id : ids) {
AttachmentEntryMap::iterator iter = attachments_.find(id);
if (iter != attachments_.end() &&
iter->second.components.count(component) > 0) {
const Attachment& attachment = iter->second.attachment;
result_map->insert(std::make_pair(id, attachment));
} else {
unavailable_attachments->push_back(id);
}
}
if (!unavailable_attachments->empty()) {
result_code = AttachmentStore::UNSPECIFIED_ERROR;
}
PostCallback(base::Bind(callback, result_code, base::Passed(&result_map),
base::Passed(&unavailable_attachments)));
}
void InMemoryAttachmentStore::Write(
AttachmentStore::Component component,
const AttachmentList& attachments,
const AttachmentStore::WriteCallback& callback) {
DCHECK(CalledOnValidThread());
for (const auto& attachment : attachments) {
attachments_.insert(std::make_pair(attachment.GetId(),
AttachmentEntry(attachment, component)));
}
PostCallback(base::Bind(callback, AttachmentStore::SUCCESS));
}
void InMemoryAttachmentStore::SetReference(AttachmentStore::Component component,
const AttachmentIdList& ids) {
DCHECK(CalledOnValidThread());
for (const auto& id : ids) {
AttachmentEntryMap::iterator attachments_iter = attachments_.find(id);
if (attachments_iter != attachments_.end()) {
attachments_iter->second.components.insert(component);
}
}
}
void InMemoryAttachmentStore::DropReference(
AttachmentStore::Component component,
const AttachmentIdList& ids,
const AttachmentStore::DropCallback& callback) {
DCHECK(CalledOnValidThread());
AttachmentStore::Result result = AttachmentStore::SUCCESS;
for (const auto& id : ids) {
AttachmentEntryMap::iterator attachments_iter = attachments_.find(id);
if (attachments_iter == attachments_.end()) {
continue;
}
attachments_iter->second.components.erase(component);
if (attachments_iter->second.components.empty()) {
attachments_.erase(attachments_iter);
}
}
PostCallback(base::Bind(callback, result));
}
void InMemoryAttachmentStore::ReadMetadataById(
AttachmentStore::Component component,
const AttachmentIdList& ids,
const AttachmentStore::ReadMetadataCallback& callback) {
DCHECK(CalledOnValidThread());
AttachmentStore::Result result_code = AttachmentStore::SUCCESS;
scoped_ptr<AttachmentMetadataList> metadata_list(
new AttachmentMetadataList());
for (const auto& id : ids) {
AttachmentEntryMap::iterator iter = attachments_.find(id);
if (iter == attachments_.end()) {
result_code = AttachmentStore::UNSPECIFIED_ERROR;
continue;
}
DCHECK_GT(iter->second.components.size(), 0u);
if (iter->second.components.count(component) == 0) {
result_code = AttachmentStore::UNSPECIFIED_ERROR;
continue;
}
AppendMetadata(metadata_list.get(), iter->second.attachment);
}
PostCallback(base::Bind(callback, result_code, base::Passed(&metadata_list)));
}
void InMemoryAttachmentStore::ReadMetadata(
AttachmentStore::Component component,
const AttachmentStore::ReadMetadataCallback& callback) {
DCHECK(CalledOnValidThread());
AttachmentStore::Result result_code = AttachmentStore::SUCCESS;
scoped_ptr<AttachmentMetadataList> metadata_list(
new AttachmentMetadataList());
for (AttachmentEntryMap::const_iterator iter = attachments_.begin();
iter != attachments_.end(); ++iter) {
DCHECK_GT(iter->second.components.size(), 0u);
if (iter->second.components.count(component) > 0) {
AppendMetadata(metadata_list.get(), iter->second.attachment);
}
}
PostCallback(base::Bind(callback, result_code, base::Passed(&metadata_list)));
}
InMemoryAttachmentStore::AttachmentEntry::AttachmentEntry(
const Attachment& attachment,
AttachmentStore::Component initial_reference_component)
: attachment(attachment) {
components.insert(initial_reference_component);
}
InMemoryAttachmentStore::AttachmentEntry::~AttachmentEntry() {
}
} // namespace syncer
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