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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "KeyValueStorage.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsVariant.h"
namespace mozilla {
class DatabaseCallback final : public nsIKeyValueDatabaseCallback {
public:
NS_DECL_ISUPPORTS
explicit DatabaseCallback(RefPtr<nsIKeyValueDatabase>& aDatabase)
: mDatabase(aDatabase) {}
NS_IMETHOD Resolve(nsIKeyValueDatabase* aDatabase) override {
if (!aDatabase) {
mResultPromise.Reject(NS_ERROR_FAILURE, __func__);
}
mDatabase = aDatabase;
mResultPromise.Resolve(true, __func__);
return NS_OK;
}
NS_IMETHOD Reject(const nsACString&) override {
mResultPromise.Reject(NS_ERROR_FAILURE, __func__);
return NS_OK;
}
RefPtr<GenericPromise> Ensure() { return mResultPromise.Ensure(__func__); }
protected:
~DatabaseCallback() = default;
RefPtr<nsIKeyValueDatabase>& mDatabase;
MozPromiseHolder<GenericPromise> mResultPromise;
};
NS_IMPL_ISUPPORTS(DatabaseCallback, nsIKeyValueDatabaseCallback);
RefPtr<GenericPromise> KeyValueStorage::Init() {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mDatabaseName.IsEmpty());
nsresult rv;
nsCOMPtr<nsIFile> profileDir;
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(profileDir));
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
MOZ_ASSERT(profileDir);
rv = profileDir->AppendNative("mediacapabilities"_ns);
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
rv = profileDir->Create(nsIFile::DIRECTORY_TYPE, 0700);
if (rv != NS_ERROR_FILE_ALREADY_EXISTS && NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
nsCOMPtr<nsIKeyValueService> keyValueService =
do_GetService("@mozilla.org/key-value-service;1", &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
MOZ_ASSERT(keyValueService);
auto callback = MakeRefPtr<DatabaseCallback>(mDatabase);
nsString path;
profileDir->GetPath(path);
keyValueService->GetOrCreate(callback, NS_ConvertUTF16toUTF8(path),
mDatabaseName);
return callback->Ensure();
}
class VoidCallback final : public nsIKeyValueVoidCallback {
public:
NS_DECL_ISUPPORTS
explicit VoidCallback(const RefPtr<KeyValueStorage>& aOwner)
: nsIKeyValueVoidCallback(), mOwner(aOwner) {}
NS_IMETHOD Resolve() override {
mResultPromise.Resolve(true, __func__);
return NS_OK;
}
NS_IMETHOD Reject(const nsACString&) override {
mResultPromise.Reject(NS_ERROR_FAILURE, __func__);
return NS_OK;
}
RefPtr<GenericPromise> Ensure(const char* aMethodName) {
return mResultPromise.Ensure(aMethodName);
}
protected:
~VoidCallback() = default;
MozPromiseHolder<GenericPromise> mResultPromise;
RefPtr<KeyValueStorage> mOwner;
};
NS_IMPL_ISUPPORTS(VoidCallback, nsIKeyValueVoidCallback);
RefPtr<GenericPromise> KeyValueStorage::Put(const nsACString& aKey,
int32_t aValue) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDatabase);
MOZ_ASSERT(!mDatabaseName.IsEmpty());
auto value = MakeRefPtr<nsVariant>();
nsresult rv = value->SetAsInt32(aValue);
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
auto callback = MakeRefPtr<VoidCallback>(this);
rv = mDatabase->Put(callback, aKey, value);
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
return callback->Ensure(__func__);
}
RefPtr<GenericPromise> KeyValueStorage::Put(const nsACString& aName,
const nsACString& aKey,
int32_t aValue) {
if (!mDatabase || !mDatabaseName.Equals(aName)) {
mDatabaseName = aName;
RefPtr<KeyValueStorage> self = this;
const nsCString key(aKey);
return Init()->Then(
GetCurrentSerialEventTarget(), __func__,
[self, key, aValue](bool) { return self->Put(key, aValue); },
[](nsresult rv) {
return GenericPromise::CreateAndReject(rv, __func__);
});
}
return Put(aKey, aValue);
}
class GetValueCallback final : public nsIKeyValueVariantCallback {
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Resolve(nsIVariant* aResult) override {
int32_t value = 0;
Unused << aResult->GetAsInt32(&value);
mResultPromise.Resolve(value, __func__);
return NS_OK;
}
NS_IMETHOD Reject(const nsACString&) override {
mResultPromise.Reject(NS_ERROR_FAILURE, __func__);
return NS_OK;
}
RefPtr<KeyValueStorage::GetPromise> Ensure() {
return mResultPromise.Ensure(__func__);
}
protected:
~GetValueCallback() = default;
private:
MozPromiseHolder<KeyValueStorage::GetPromise> mResultPromise;
};
NS_IMPL_ISUPPORTS(GetValueCallback, nsIKeyValueVariantCallback);
RefPtr<KeyValueStorage::GetPromise> KeyValueStorage::Get(
const nsACString& aKey) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDatabase);
MOZ_ASSERT(!mDatabaseName.IsEmpty());
RefPtr<nsVariant> defaultValue = new nsVariant;
nsresult rv = defaultValue->SetAsInt32(-1);
if (NS_WARN_IF(NS_FAILED(rv))) {
return KeyValueStorage::GetPromise::CreateAndReject(rv, __func__);
}
auto callback = MakeRefPtr<GetValueCallback>();
rv = mDatabase->Get(callback, aKey, defaultValue);
if (NS_WARN_IF(NS_FAILED(rv))) {
return KeyValueStorage::GetPromise::CreateAndReject(rv, __func__);
}
return callback->Ensure();
}
RefPtr<KeyValueStorage::GetPromise> KeyValueStorage::Get(
const nsACString& aName, const nsACString& aKey) {
if (!mDatabase || !mDatabaseName.Equals(aName)) {
mDatabaseName = aName;
RefPtr<KeyValueStorage> self = this;
const nsCString key(aKey);
return Init()->Then(
GetCurrentSerialEventTarget(), __func__,
[self, key](bool) { return self->Get(key); },
[](nsresult rv) {
return KeyValueStorage::GetPromise::CreateAndReject(rv, __func__);
});
}
return Get(aKey);
}
RefPtr<GenericPromise> KeyValueStorage::Clear() {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDatabase);
MOZ_ASSERT(!mDatabaseName.IsEmpty());
auto callback = MakeRefPtr<VoidCallback>(this);
nsresult rv = mDatabase->Clear(callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
return GenericPromise::CreateAndReject(rv, __func__);
}
return callback->Ensure(__func__);
}
RefPtr<GenericPromise> KeyValueStorage::Clear(const nsACString& aName) {
if (!mDatabase || !mDatabaseName.Equals(aName)) {
mDatabaseName = aName;
RefPtr<KeyValueStorage> self = this;
return Init()->Then(
GetCurrentSerialEventTarget(), __func__,
[self](bool) { return self->Clear(); },
[](nsresult rv) {
return GenericPromise::CreateAndReject(rv, __func__);
});
}
return Clear();
}
} // namespace mozilla
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