gecko-dev/dom/indexedDB/Client.cpp

339 строки
9.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Client.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "mozilla/dom/quota/UsageRunnable.h"
#include "mozilla/dom/quota/Utilities.h"
#include "IDBDatabase.h"
#include "IndexedDatabaseManager.h"
#include "TransactionThreadPool.h"
USING_INDEXEDDB_NAMESPACE
using mozilla::dom::quota::QuotaManager;
namespace {
bool
GetDatabaseBaseFilename(const nsAString& aFilename,
nsAString& aDatabaseBaseFilename)
{
NS_ASSERTION(!aFilename.IsEmpty(), "Bad argument!");
NS_NAMED_LITERAL_STRING(sqlite, ".sqlite");
if (!StringEndsWith(aFilename, sqlite)) {
return false;
}
aDatabaseBaseFilename =
Substring(aFilename, 0, aFilename.Length() - sqlite.Length());
return true;
}
} // anonymous namespace
// This needs to be fully qualified to not confuse trace refcnt assertions.
NS_IMPL_ADDREF(mozilla::dom::indexedDB::Client)
NS_IMPL_RELEASE(mozilla::dom::indexedDB::Client)
nsresult
Client::InitOrigin(const nsACString& aOrigin, UsageRunnable* aUsageRunnable)
{
nsCOMPtr<nsIFile> directory;
nsresult rv = GetDirectory(aOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
// We need to see if there are any files in the directory already. If they
// are database files then we need to cleanup stored files (if it's needed)
// and also get the usage.
nsAutoTArray<nsString, 20> subdirsToProcess;
nsAutoTArray<nsCOMPtr<nsIFile> , 20> unknownFiles;
nsTHashtable<nsStringHashKey> validSubdirs;
validSubdirs.Init(20);
nsCOMPtr<nsISimpleEnumerator> entries;
rv = directory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) &&
hasMore && (!aUsageRunnable || !aUsageRunnable->Canceled())) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ENSURE_TRUE(file, NS_NOINTERFACE);
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (StringEndsWith(leafName, NS_LITERAL_STRING(".sqlite-journal"))) {
continue;
}
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (isDirectory) {
if (!validSubdirs.GetEntry(leafName)) {
subdirsToProcess.AppendElement(leafName);
}
continue;
}
nsString dbBaseFilename;
if (!GetDatabaseBaseFilename(leafName, dbBaseFilename)) {
unknownFiles.AppendElement(file);
continue;
}
nsCOMPtr<nsIFile> fmDirectory;
rv = directory->Clone(getter_AddRefs(fmDirectory));
NS_ENSURE_SUCCESS(rv, rv);
rv = fmDirectory->Append(dbBaseFilename);
NS_ENSURE_SUCCESS(rv, rv);
rv = FileManager::InitDirectory(fmDirectory, file, aOrigin);
NS_ENSURE_SUCCESS(rv, rv);
if (aUsageRunnable) {
int64_t fileSize;
rv = file->GetFileSize(&fileSize);
NS_ENSURE_SUCCESS(rv, rv);
aUsageRunnable->AppendToDatabaseUsage(uint64_t(fileSize));
uint64_t usage;
rv = FileManager::GetUsage(fmDirectory, &usage);
NS_ENSURE_SUCCESS(rv, rv);
aUsageRunnable->AppendToFileUsage(usage);
}
validSubdirs.PutEntry(dbBaseFilename);
}
NS_ENSURE_SUCCESS(rv, rv);
for (uint32_t i = 0; i < subdirsToProcess.Length(); i++) {
const nsString& subdir = subdirsToProcess[i];
if (!validSubdirs.GetEntry(subdir)) {
NS_WARNING("Unknown subdirectory found!");
return NS_ERROR_UNEXPECTED;
}
}
for (uint32_t i = 0; i < unknownFiles.Length(); i++) {
nsCOMPtr<nsIFile>& unknownFile = unknownFiles[i];
// Some temporary SQLite files could disappear, so we have to check if the
// unknown file still exists.
bool exists;
rv = unknownFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
nsString leafName;
unknownFile->GetLeafName(leafName);
// The journal file may exists even after db has been correctly opened.
if (!StringEndsWith(leafName, NS_LITERAL_STRING(".sqlite-journal"))) {
NS_WARNING("Unknown file found!");
return NS_ERROR_UNEXPECTED;
}
}
}
return NS_OK;
}
nsresult
Client::GetUsageForOrigin(const nsACString& aOrigin,
UsageRunnable* aUsageRunnable)
{
NS_ASSERTION(aUsageRunnable, "Null pointer!");
nsCOMPtr<nsIFile> directory;
nsresult rv = GetDirectory(aOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
rv = GetUsageForDirectoryInternal(directory, aUsageRunnable, true);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
bool
Client::IsTransactionServiceActivated()
{
return !!TransactionThreadPool::Get();
}
void
Client::WaitForStoragesToComplete(nsTArray<nsIOfflineStorage*>& aStorages,
nsIRunnable* aCallback)
{
NS_ASSERTION(!aStorages.IsEmpty(), "No storages to wait on!");
NS_ASSERTION(aCallback, "Passed null callback!");
TransactionThreadPool* pool = TransactionThreadPool::Get();
NS_ASSERTION(pool, "Should have checked if transaction service is active!");
nsTArray<IDBDatabase*> databases(aStorages.Length());
for (uint32_t index = 0; index < aStorages.Length(); index++) {
IDBDatabase* database = IDBDatabase::FromStorage(aStorages[index]);
NS_ASSERTION(database, "This shouldn't be null!");
databases.AppendElement(database);
}
pool->WaitForDatabasesToComplete(databases, aCallback);
}
void
Client::AbortTransactionsForStorage(nsIOfflineStorage* aStorage)
{
NS_ASSERTION(aStorage, "Passed null storage!");
TransactionThreadPool* pool = TransactionThreadPool::Get();
NS_ASSERTION(pool, "Should have checked if transaction service is active!");
IDBDatabase* database = IDBDatabase::FromStorage(aStorage);
NS_ASSERTION(database, "This shouldn't be null!");
pool->AbortTransactionsForDatabase(database);
}
bool
Client::HasTransactionsForStorage(nsIOfflineStorage* aStorage)
{
TransactionThreadPool* pool = TransactionThreadPool::Get();
NS_ASSERTION(pool, "Should have checked if transaction service is active!");
IDBDatabase* database = IDBDatabase::FromStorage(aStorage);
NS_ASSERTION(database, "This shouldn't be null!");
return pool->HasTransactionsForDatabase(database);
}
void
Client::OnOriginClearCompleted(const nsACString& aPattern)
{
IndexedDatabaseManager* mgr = IndexedDatabaseManager::Get();
if (mgr) {
mgr->InvalidateFileManagersForPattern(aPattern);
}
}
void
Client::ShutdownTransactionService()
{
TransactionThreadPool::Shutdown();
}
void
Client::OnShutdownCompleted()
{
IndexedDatabaseManager* mgr = IndexedDatabaseManager::Get();
if (mgr) {
mgr->InvalidateAllFileManagers();
}
}
nsresult
Client::GetDirectory(const nsACString& aOrigin, nsIFile** aDirectory)
{
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "This should never fail!");
nsCOMPtr<nsIFile> directory;
nsresult rv =
quotaManager->GetDirectoryForOrigin(aOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(directory, "What?");
rv = directory->Append(NS_LITERAL_STRING(IDB_DIRECTORY_NAME));
NS_ENSURE_SUCCESS(rv, rv);
directory.forget(aDirectory);
return NS_OK;
}
nsresult
Client::GetUsageForDirectoryInternal(nsIFile* aDirectory,
UsageRunnable* aUsageRunnable,
bool aDatabaseFiles)
{
NS_ASSERTION(aDirectory, "Null pointer!");
NS_ASSERTION(aUsageRunnable, "Null pointer!");
nsCOMPtr<nsISimpleEnumerator> entries;
nsresult rv = aDirectory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
if (!entries) {
return NS_OK;
}
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) &&
hasMore && !aUsageRunnable->Canceled()) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file(do_QueryInterface(entry));
NS_ASSERTION(file, "Don't know what this is!");
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (isDirectory) {
if (aDatabaseFiles) {
rv = GetUsageForDirectoryInternal(file, aUsageRunnable, false);
NS_ENSURE_SUCCESS(rv, rv);
}
else {
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (!leafName.EqualsLiteral(JOURNAL_DIRECTORY_NAME)) {
NS_WARNING("Unknown directory found!");
}
}
continue;
}
int64_t fileSize;
rv = file->GetFileSize(&fileSize);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(fileSize >= 0, "Negative size?!");
if (aDatabaseFiles) {
aUsageRunnable->AppendToDatabaseUsage(uint64_t(fileSize));
}
else {
aUsageRunnable->AppendToFileUsage(uint64_t(fileSize));
}
}
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}