mirror of
https://github.com/firebase/firebase-ios-sdk
synced 2026-11-10 22:45:59 +05:45
zxu
a441190635
* implement Firestore DatabaseInfo in C++
* temporary stash changes; blocking on the massive renaming of .m to .mm
* add database_info_test to project
* finish port DatabaseId and fix style, modular fixing DatabaseInfo
* port DatabaseInfo
* remove FSTDatabase{ID,Info} and their tests from project
* fix unit test
* use namespace alias
* use namespace alias, leftover
* address more changes
* refactoring to use raw pointer instead of value for property
* address changes
* remove self->
* fix style
* remove the name suffix Alloc
* fix a bug
102 lines
3.8 KiB
Objective-C
102 lines
3.8 KiB
Objective-C
/*
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* Copyright 2017 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import <Foundation/Foundation.h>
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#include <memory>
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#import "Firestore/Source/Local/FSTPersistence.h"
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#include "Firestore/core/src/firebase/firestore/core/database_info.h"
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#include "leveldb/db.h"
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@class FSTLocalSerializer;
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NS_ASSUME_NONNULL_BEGIN
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/** A LevelDB-backed instance of FSTPersistence. */
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// TODO(mikelehen): Rename to FSTLevelDBPersistence.
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@interface FSTLevelDB : NSObject <FSTPersistence>
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/**
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* Initializes the LevelDB in the given directory. Note that all expensive startup work including
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* opening any database files is deferred until -[FSTPersistence start] is called.
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*/
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- (instancetype)initWithDirectory:(NSString *)directory
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serializer:(FSTLocalSerializer *)serializer NS_DESIGNATED_INITIALIZER;
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- (instancetype)init __attribute__((unavailable("Use -initWithDirectory: instead.")));
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/** Finds a suitable directory to serve as the root of all Firestore local storage. */
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+ (NSString *)documentsDirectory;
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/**
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* Computes a unique storage directory for the given identifying components of local storage.
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*
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* @param databaseInfo The identifying information for the local storage instance.
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* @param documentsDirectory The root document directory relative to which the storage directory
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* will be created. Usually just +[FSTLevelDB documentsDir].
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* @return A storage directory unique to the instance identified by databaseInfo.
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*/
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+ (NSString *)storageDirectoryForDatabaseInfo:
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(const firebase::firestore::core::DatabaseInfo &)databaseInfo
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documentsDirectory:(NSString *)documentsDirectory;
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/**
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* Starts LevelDB-backed persistent storage by opening the database files, creating the DB if it
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* does not exist.
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*
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* The leveldb directory is created relative to the appropriate document storage directory for the
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* platform: NSDocumentDirectory on iOS or $HOME/.firestore on macOS.
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*/
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- (BOOL)start:(NSError **)error;
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// What follows is the Objective-C++ extension to the API.
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/**
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* @return A standard set of read options
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*/
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+ (const leveldb::ReadOptions)standardReadOptions;
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/**
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* Creates an NSError based on the given status if the status is not ok.
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*
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* @param status The status of the preceding LevelDB operation.
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* @param description A printf-style format string describing what kind of failure happened if
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* @a status is not ok. Additional parameters are substituted into the placeholders in this
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* format string.
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*
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* @return An NSError with its localizedDescription composed from the description format and its
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* localizedFailureReason composed from any error message embedded in @a status.
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*/
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+ (nullable NSError *)errorWithStatus:(leveldb::Status)status
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description:(NSString *)description, ... NS_FORMAT_FUNCTION(2, 3);
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/**
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* Converts the given @a status to an NSString describing the status condition, suitable for
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* logging or inclusion in an NSError.
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*
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* @param status The status of the preceding LevelDB operation.
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*
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* @return An NSString describing the status (even if the status was ok).
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*/
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+ (NSString *)descriptionOfStatus:(leveldb::Status)status;
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/** The native db pointer, allocated during start. */
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@property(nonatomic, assign, readonly) std::shared_ptr<leveldb::DB> ptr;
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@end
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NS_ASSUME_NONNULL_END
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