зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1722466 - Add an RAII helper class QuotaDatabaseAutoAttacher to ensure database will be detached automatically in scope exit if any error happens before explicitly detach; r=dom-storage-reviewers,janv
This patch add an RAII helper class QuotaDatabaseAutoAttacher, which provides an Attach() and Detach() method, and guarantees that the database will be detached in it's destructor when an instance of this class is out of scope. Differential Revision: https://phabricator.services.mozilla.com/D128042
This commit is contained in:
Haiyang Xu
Родитель
d78bdfe181
Коммит
35ca020a6b
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@ -81,6 +81,7 @@
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#include "mozilla/dom/quota/OriginScope.h"
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#include "mozilla/dom/quota/PersistenceType.h"
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#include "mozilla/dom/quota/QuotaCommon.h"
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#include "mozilla/dom/quota/StorageHelpers.h"
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#include "mozilla/dom/quota/QuotaManager.h"
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#include "mozilla/dom/quota/QuotaObject.h"
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#include "mozilla/dom/quota/UsageInfo.h"
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@ -727,47 +728,6 @@ CreateArchiveStorageConnection(const nsAString& aStoragePath) {
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return connection;
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}
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nsresult AttachArchiveDatabase(const nsAString& aStoragePath,
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mozIStorageConnection* aConnection) {
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AssertIsOnIOThread();
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MOZ_ASSERT(!aStoragePath.IsEmpty());
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MOZ_ASSERT(aConnection);
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QM_TRY_INSPECT(const auto& archiveFile, GetArchiveFile(aStoragePath));
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#ifdef DEBUG
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{
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QM_TRY_INSPECT(const bool& exists,
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MOZ_TO_RESULT_INVOKE(archiveFile, Exists));
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MOZ_ASSERT(exists);
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}
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#endif
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QM_TRY_INSPECT(const auto& path,
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MOZ_TO_RESULT_INVOKE_TYPED(nsString, archiveFile, GetPath));
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QM_TRY_INSPECT(const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, aConnection,
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CreateStatement, "ATTACH DATABASE :path AS archive;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->BindStringByName("path"_ns, path)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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return NS_OK;
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}
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nsresult DetachArchiveDatabase(mozIStorageConnection* aConnection) {
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AssertIsOnIOThread();
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MOZ_ASSERT(aConnection);
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QM_TRY(MOZ_TO_RESULT(
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aConnection->ExecuteSimpleSQL("DETACH DATABASE archive"_ns)));
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return NS_OK;
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}
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Result<nsCOMPtr<nsIFile>, nsresult> GetShadowFile(const nsAString& aBasePath) {
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MOZ_ASSERT(IsOnIOThread() || IsOnGlobalConnectionThread());
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MOZ_ASSERT(!aBasePath.IsEmpty());
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@ -6964,95 +6924,104 @@ nsresult PrepareDatastoreOp::DatabaseWork() {
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if (hasDataForMigration) {
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MOZ_ASSERT(mUsage == 0);
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QM_TRY(MOZ_TO_RESULT(
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AttachArchiveDatabase(quotaManager->GetStoragePath(), connection)));
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QM_TRY_INSPECT(const int64_t& newUsage,
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GetUsage(*connection, mArchivedOriginScope.get()));
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if (!quotaObject->MaybeUpdateSize(newUsage, /* aTruncate */ true)) {
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return NS_ERROR_FILE_NO_DEVICE_SPACE;
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}
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auto autoUpdateSize = MakeScopeExit(["aObject] {
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MOZ_ALWAYS_TRUE(quotaObject->MaybeUpdateSize(0, /* aTruncate */ true));
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});
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mozStorageTransaction transaction(
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connection, false, mozIStorageConnection::TRANSACTION_IMMEDIATE);
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QM_TRY(MOZ_TO_RESULT(transaction.Start()));
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{
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nsCOMPtr<mozIStorageFunction> function = new CompressFunction();
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QM_TRY_INSPECT(const auto& archiveFile,
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GetArchiveFile(quotaManager->GetStoragePath()));
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auto autoArchiveDatabaseAttacher =
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AutoDatabaseAttacher(connection, archiveFile, "archive"_ns);
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QM_TRY(MOZ_TO_RESULT(autoArchiveDatabaseAttacher.Attach()));
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QM_TRY_INSPECT(const int64_t& newUsage,
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GetUsage(*connection, mArchivedOriginScope.get()));
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if (!quotaObject->MaybeUpdateSize(newUsage, /* aTruncate */ true)) {
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return NS_ERROR_FILE_NO_DEVICE_SPACE;
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}
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auto autoUpdateSize = MakeScopeExit(["aObject] {
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MOZ_ALWAYS_TRUE(
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quotaObject->MaybeUpdateSize(0, /* aTruncate */ true));
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});
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mozStorageTransaction transaction(
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connection, false, mozIStorageConnection::TRANSACTION_IMMEDIATE);
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QM_TRY(MOZ_TO_RESULT(transaction.Start()));
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{
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nsCOMPtr<mozIStorageFunction> function = new CompressFunction();
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QM_TRY(MOZ_TO_RESULT(
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connection->CreateFunction("compress"_ns, 1, function)));
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function = new CompressibleFunction();
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QM_TRY(MOZ_TO_RESULT(
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connection->CreateFunction("compressible"_ns, 1, function)));
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"INSERT INTO data (key, value, utf16Length, compressed) "
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"SELECT key, compress(value), utf16Length(value), "
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"compressible(value) "
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"FROM webappsstore2 "
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"WHERE originKey = :originKey "
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"AND originAttributes = :originAttributes;"_ns));
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QM_TRY(MOZ_TO_RESULT(mArchivedOriginScope->BindToStatement(stmt)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("compress"_ns)));
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("compressible"_ns)));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"UPDATE database SET usage = :usage;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->BindInt64ByName("usage"_ns, newUsage)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"DELETE FROM webappsstore2 "
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"WHERE originKey = :originKey "
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"AND originAttributes = :originAttributes;"_ns));
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QM_TRY(MOZ_TO_RESULT(mArchivedOriginScope->BindToStatement(stmt)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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QM_TRY(MOZ_TO_RESULT(
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connection->CreateFunction("compress"_ns, 1, function)));
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UpdateUsageFile(usageFile, usageJournalFile, newUsage)));
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QM_TRY(MOZ_TO_RESULT(transaction.Commit()));
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function = new CompressibleFunction();
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autoUpdateSize.release();
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QM_TRY(MOZ_TO_RESULT(
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connection->CreateFunction("compressible"_ns, 1, function)));
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QM_TRY(MOZ_TO_RESULT(usageJournalFile->Remove(false)));
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"INSERT INTO data (key, value, utf16Length, compressed) "
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"SELECT key, compress(value), utf16Length(value), "
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"compressible(value) "
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"FROM webappsstore2 "
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"WHERE originKey = :originKey "
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"AND originAttributes = :originAttributes;"_ns));
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mUsage = newUsage;
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QM_TRY(MOZ_TO_RESULT(mArchivedOriginScope->BindToStatement(stmt)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("compress"_ns)));
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("compressible"_ns)));
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QM_TRY(MOZ_TO_RESULT(autoArchiveDatabaseAttacher.Detach()));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"UPDATE database SET usage = :usage;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->BindInt64ByName("usage"_ns, newUsage)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection, CreateStatement,
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"DELETE FROM webappsstore2 "
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"WHERE originKey = :originKey "
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"AND originAttributes = :originAttributes;"_ns));
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QM_TRY(MOZ_TO_RESULT(mArchivedOriginScope->BindToStatement(stmt)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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QM_TRY(MOZ_TO_RESULT(
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UpdateUsageFile(usageFile, usageJournalFile, newUsage)));
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QM_TRY(MOZ_TO_RESULT(transaction.Commit()));
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autoUpdateSize.release();
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QM_TRY(MOZ_TO_RESULT(usageJournalFile->Remove(false)));
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QM_TRY(MOZ_TO_RESULT(DetachArchiveDatabase(connection)));
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MOZ_ASSERT(gArchivedOrigins);
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MOZ_ASSERT(mArchivedOriginScope->HasMatches(gArchivedOrigins));
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mArchivedOriginScope->RemoveMatches(gArchivedOrigins);
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mUsage = newUsage;
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}
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nsCOMPtr<mozIStorageConnection> shadowConnection;
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@ -8365,59 +8334,70 @@ nsresult QuotaClient::AboutToClearOrigins(
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return connection;
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}()));
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if (hasDataForRemoval) {
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QM_TRY(MOZ_TO_RESULT(
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AttachArchiveDatabase(quotaManager->GetStoragePath(), connection)));
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}
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if (archivedOriginScope->IsPattern()) {
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nsCOMPtr<mozIStorageFunction> function(
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new MatchFunction(archivedOriginScope->GetPattern()));
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QM_TRY(
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MOZ_TO_RESULT(connection->CreateFunction("match"_ns, 2, function)));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(nsCOMPtr<mozIStorageStatement>, connection,
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CreateStatement, "BEGIN IMMEDIATE;"_ns));
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Maybe<AutoDatabaseAttacher> maybeAutoArchiveDatabaseAttacher;
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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if (hasDataForRemoval) {
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QM_TRY_INSPECT(const auto& archiveFile,
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GetArchiveFile(quotaManager->GetStoragePath()));
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maybeAutoArchiveDatabaseAttacher.emplace(
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AutoDatabaseAttacher(connection, archiveFile, "archive"_ns));
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QM_TRY(MOZ_TO_RESULT(maybeAutoArchiveDatabaseAttacher->Attach()));
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}
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if (archivedOriginScope->IsPattern()) {
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nsCOMPtr<mozIStorageFunction> function(
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new MatchFunction(archivedOriginScope->GetPattern()));
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QM_TRY(
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MOZ_TO_RESULT(connection->CreateFunction("match"_ns, 2, function)));
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}
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{
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QM_TRY_INSPECT(const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection,
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CreateStatement, "BEGIN IMMEDIATE;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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if (shadowWrites) {
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QM_TRY(MOZ_TO_RESULT(
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PerformDelete(connection, "main"_ns, archivedOriginScope.get())));
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}
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if (hasDataForRemoval) {
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QM_TRY(MOZ_TO_RESULT(PerformDelete(connection, "archive"_ns,
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archivedOriginScope.get())));
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}
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{
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QM_TRY_INSPECT(const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, connection,
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CreateStatement, "COMMIT;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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if (archivedOriginScope->IsPattern()) {
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("match"_ns)));
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}
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if (hasDataForRemoval) {
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MOZ_ASSERT(maybeAutoArchiveDatabaseAttacher.isSome());
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QM_TRY(MOZ_TO_RESULT(maybeAutoArchiveDatabaseAttacher->Detach()));
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maybeAutoArchiveDatabaseAttacher.reset();
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MOZ_ASSERT(gArchivedOrigins);
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MOZ_ASSERT(archivedOriginScope->HasMatches(gArchivedOrigins));
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archivedOriginScope->RemoveMatches(gArchivedOrigins);
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}
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}
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if (shadowWrites) {
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QM_TRY(MOZ_TO_RESULT(
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PerformDelete(connection, "main"_ns, archivedOriginScope.get())));
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}
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if (hasDataForRemoval) {
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QM_TRY(MOZ_TO_RESULT(
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PerformDelete(connection, "archive"_ns, archivedOriginScope.get())));
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}
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{
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(nsCOMPtr<mozIStorageStatement>, connection,
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CreateStatement, "COMMIT;"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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}
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if (archivedOriginScope->IsPattern()) {
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QM_TRY(MOZ_TO_RESULT(connection->RemoveFunction("match"_ns)));
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}
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if (hasDataForRemoval) {
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QM_TRY(MOZ_TO_RESULT(DetachArchiveDatabase(connection)));
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MOZ_ASSERT(gArchivedOrigins);
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MOZ_ASSERT(archivedOriginScope->HasMatches(gArchivedOrigins));
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archivedOriginScope->RemoveMatches(gArchivedOrigins);
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}
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QM_TRY(MOZ_TO_RESULT(connection->Close()));
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}
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@ -0,0 +1,68 @@
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
|
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/quota/StorageHelpers.h"
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#include "mozilla/dom/quota/QuotaCommon.h"
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namespace mozilla::dom::quota {
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AutoDatabaseAttacher::AutoDatabaseAttacher(
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nsCOMPtr<mozIStorageConnection> aConnection,
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nsCOMPtr<nsIFile> aDatabaseFile, const nsLiteralCString& aSchemaName)
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: mConnection(std::move(aConnection)),
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mDatabaseFile(std::move(aDatabaseFile)),
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mSchemaName(aSchemaName),
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mAttached(false) {}
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AutoDatabaseAttacher::~AutoDatabaseAttacher() {
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if (mAttached) {
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QM_WARNONLY_TRY(MOZ_TO_RESULT(Detach()));
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}
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}
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nsresult AutoDatabaseAttacher::Attach() {
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MOZ_ASSERT(mConnection);
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MOZ_ASSERT(mDatabaseFile);
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MOZ_ASSERT(!mAttached);
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#ifdef DEBUG
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{
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QM_TRY_INSPECT(const bool& exists,
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MOZ_TO_RESULT_INVOKE(mDatabaseFile, Exists));
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MOZ_ASSERT(exists);
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}
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#endif
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QM_TRY_INSPECT(const auto& path,
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MOZ_TO_RESULT_INVOKE_TYPED(nsString, mDatabaseFile, GetPath));
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QM_TRY_INSPECT(
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const auto& stmt,
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MOZ_TO_RESULT_INVOKE_TYPED(
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nsCOMPtr<mozIStorageStatement>, mConnection, CreateStatement,
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"ATTACH DATABASE :path AS "_ns + mSchemaName + ";"_ns));
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QM_TRY(MOZ_TO_RESULT(stmt->BindStringByName("path"_ns, path)));
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QM_TRY(MOZ_TO_RESULT(stmt->Execute()));
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mAttached = true;
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return NS_OK;
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}
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nsresult AutoDatabaseAttacher::Detach() {
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MOZ_ASSERT(mConnection);
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MOZ_ASSERT(mAttached);
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QM_TRY(MOZ_TO_RESULT(
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mConnection->ExecuteSimpleSQL("DETACH DATABASE "_ns + mSchemaName)));
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mAttached = false;
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return NS_OK;
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}
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} // namespace mozilla::dom::quota
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@ -0,0 +1,54 @@
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
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/* vim: set ts=8 sts=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/. */
|
||||
|
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#ifndef DOM_QUOTA_QUOTADATABASEHELPER_H
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#define DOM_QUOTA_QUOTADATABASEHELPER_H
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|
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#include "mozilla/dom/quota/QuotaCommon.h"
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#include "mozIStorageConnection.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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|
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namespace mozilla::dom::quota {
|
||||
|
||||
/**
|
||||
* This class provides a RAII wrap of attaching and detaching database
|
||||
* in a given C++ scope. It is guaranteed that an attached database will
|
||||
* be detached even if you have an exception or return early.
|
||||
*
|
||||
* @param aConnection
|
||||
* The connection to attach a database to.
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||||
* @param aDatabaseFile
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||||
* The database file to attach.
|
||||
* @param aSchemaName
|
||||
* The schema-name. Can be any string literal which is supported by the
|
||||
* underlying database. For more details about schema-name, see
|
||||
* https://www.sqlite.org/lang_attach.html
|
||||
*/
|
||||
class MOZ_STACK_CLASS AutoDatabaseAttacher final {
|
||||
public:
|
||||
explicit AutoDatabaseAttacher(nsCOMPtr<mozIStorageConnection> aConnection,
|
||||
nsCOMPtr<nsIFile> aDatabaseFile,
|
||||
const nsLiteralCString& aSchemaName);
|
||||
|
||||
~AutoDatabaseAttacher();
|
||||
|
||||
AutoDatabaseAttacher() = delete;
|
||||
|
||||
[[nodiscard]] nsresult Attach();
|
||||
|
||||
[[nodiscard]] nsresult Detach();
|
||||
|
||||
private:
|
||||
nsCOMPtr<mozIStorageConnection> mConnection;
|
||||
nsCOMPtr<nsIFile> mDatabaseFile;
|
||||
const nsLiteralCString mSchemaName;
|
||||
bool mAttached;
|
||||
};
|
||||
|
||||
} // namespace mozilla::dom::quota
|
||||
|
||||
#endif // DOM_QUOTA_QUOTADATABASEHELPER_H
|
||||
|
|
@ -56,6 +56,7 @@ EXPORTS.mozilla.dom.quota += [
|
|||
"QuotaObject.h",
|
||||
"ScopedLogExtraInfo.h",
|
||||
"SerializationHelpers.h",
|
||||
"StorageHelpers.h",
|
||||
"UsageInfo.h",
|
||||
]
|
||||
|
||||
|
|
@ -83,6 +84,7 @@ UNIFIED_SOURCES += [
|
|||
"QuotaRequests.cpp",
|
||||
"QuotaResults.cpp",
|
||||
"ScopedLogExtraInfo.cpp",
|
||||
"StorageHelpers.cpp",
|
||||
"StorageManager.cpp",
|
||||
]
|
||||
|
||||
|
|
|
|||
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