Remove old way to init SqliteDb.

tddb/td/db/SqliteDb.cpp

@@ -8,6 +8,7 @@
 
 #include "td/utils/common.h"
 #include "td/utils/format.h"
+#include "td/utils/logging.h"
 #include "td/utils/port/path.h"
 #include "td/utils/port/Stat.h"
 #include "td/utils/SliceBuilder.h"
@@ -70,17 +71,13 @@ string db_key_to_sqlcipher_key(const DbKey &db_key) {
 
 SqliteDb::~SqliteDb() = default;
 
-Status SqliteDb::init(CSlice path, bool *was_created) {
-  // If database does not exist, delete all other files which may left
-  // from older database
+Status SqliteDb::init(CSlice path) {
+  // if database does not exist, delete all other files which could have been left from the old database
   bool is_db_exists = stat(path).is_ok();
   if (!is_db_exists) {
     TRY_STATUS(destroy(path));
   }
 
-  if (was_created != nullptr) {
-    *was_created = !is_db_exists;
-  }
   sqlite3 *db;
   CHECK(sqlite3_threadsafe() != 0);
   int rc = sqlite3_open_v2(path.c_str(), &db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE /*| SQLITE_OPEN_SHAREDCACHE*/,
@@ -196,7 +193,7 @@ Status SqliteDb::check_encryption() {
 
 Result<SqliteDb> SqliteDb::open_with_key(CSlice path, const DbKey &db_key, optional<int32> cipher_version) {
   auto res = do_open_with_key(path, db_key, cipher_version ? cipher_version.value() : 0);
-  if (res.is_error() && !cipher_version) {
+  if (res.is_error() && !cipher_version && !db_key.is_empty()) {
     return do_open_with_key(path, db_key, 3);
   }
   return res;
@@ -217,7 +214,7 @@ Result<SqliteDb> SqliteDb::do_open_with_key(CSlice path, const DbKey &db_key, in
     }
     db.set_cipher_version(cipher_version);
   }
-  TRY_STATUS_PREFIX(db.check_encryption(), "Can't open database: ");
+  TRY_STATUS_PREFIX(db.check_encryption(), "Can't check database: ");
   return std::move(db);
 }
 

tddb/td/db/SqliteDb.h

@@ -11,7 +11,6 @@
 
 #include "td/db/detail/RawSqliteDb.h"
 
-#include "td/utils/logging.h"
 #include "td/utils/optional.h"
 #include "td/utils/Slice.h"
 #include "td/utils/Status.h"
@@ -25,10 +24,6 @@ namespace td {
 class SqliteDb {
  public:
   SqliteDb() = default;
-  explicit SqliteDb(CSlice path) {
-    auto status = init(path);
-    LOG_IF(FATAL, status.is_error()) << status;
-  }
   SqliteDb(SqliteDb &&) = default;
   SqliteDb &operator=(SqliteDb &&) = default;
   SqliteDb(const SqliteDb &) = delete;
@@ -47,7 +42,6 @@ class SqliteDb {
     *this = SqliteDb();
   }
 
-  Status init(CSlice path, bool *was_created = nullptr) TD_WARN_UNUSED_RESULT;
   Status exec(CSlice cmd) TD_WARN_UNUSED_RESULT;
   Result<bool> has_table(Slice table);
   Result<string> get_pragma(Slice name);
@@ -61,7 +55,7 @@ class SqliteDb {
 
   static Status destroy(Slice path) TD_WARN_UNUSED_RESULT;
 
-  // Anyway we can't change the key on the fly, so having static functions is more than enough
+  // we can't change the key on the fly, so static functions are more than enough
   static Result<SqliteDb> open_with_key(CSlice path, const DbKey &db_key, optional<int32> cipher_version = {});
   static Result<SqliteDb> change_key(CSlice path, const DbKey &new_db_key, const DbKey &old_db_key);
 
@@ -86,6 +80,8 @@ class SqliteDb {
   std::shared_ptr<detail::RawSqliteDb> raw_;
   bool enable_logging_ = false;
 
+  Status init(CSlice path) TD_WARN_UNUSED_RESULT;
+
   Status check_encryption();
   static Result<SqliteDb> do_open_with_key(CSlice path, const DbKey &db_key, int32 cipher_version);
   void set_cipher_version(int32 cipher_version);

tddb/td/db/SqliteKeyValue.cpp

@@ -11,19 +11,6 @@
 
 namespace td {
 
-Result<bool> SqliteKeyValue::init(string path) {
-  path_ = std::move(path);
-  bool is_created = false;
-  SqliteDb db;
-  TRY_STATUS(db.init(path, &is_created));
-  TRY_STATUS(db.exec("PRAGMA encoding=\"UTF-8\""));
-  TRY_STATUS(db.exec("PRAGMA synchronous=NORMAL"));
-  TRY_STATUS(db.exec("PRAGMA journal_mode=WAL"));
-  TRY_STATUS(db.exec("PRAGMA temp_store=MEMORY"));
-  TRY_STATUS(init_with_connection(std::move(db), "KV"));
-  return is_created;
-}
-
 Status SqliteKeyValue::init_with_connection(SqliteDb connection, string table_name) {
   auto init_guard = ScopeExit() + [&] {
     close();

tddb/td/db/SqliteKeyValue.h

@@ -33,8 +33,6 @@ class SqliteKeyValue {
     return db_.empty();
   }
 
-  Result<bool> init(string path) TD_WARN_UNUSED_RESULT;
-
   Status init_with_connection(SqliteDb connection, string table_name) TD_WARN_UNUSED_RESULT;
 
   Result<bool> try_regenerate_index() TD_WARN_UNUSED_RESULT {
@@ -106,7 +104,6 @@ class SqliteKeyValue {
   }
 
  private:
-  string path_;
   string table_name_;
   SqliteDb db_;
   SqliteStatement get_stmt_;

test/db.cpp

@@ -137,8 +137,7 @@ TEST(DB, binlog_encryption) {
 TEST(DB, sqlite_lfs) {
   string path = "test_sqlite_db";
   SqliteDb::destroy(path).ignore();
-  SqliteDb db;
-  db.init(path).ensure();
+  auto db = SqliteDb::open_with_key(path, DbKey::empty()).move_as_ok();
   db.exec("PRAGMA journal_mode=WAL").ensure();
   db.exec("PRAGMA user_version").ensure();
 }
@@ -380,7 +379,8 @@ TEST(DB, key_value) {
   QueryHandler<SqliteKeyValue> sqlite_kv;
   CSlice name = "test_sqlite_kv";
   SqliteDb::destroy(name).ignore();
-  sqlite_kv.impl().init(name.str()).ensure();
+  auto db = SqliteDb::open_with_key(name, DbKey::empty()).move_as_ok();
+  sqlite_kv.impl().init_with_connection(std::move(db), "KV").ensure();
 
   int cnt = 0;
   for (auto &q : queries) {