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crate::ix!();
/**
| An instance of this class represents
| one SQLite3 database.
|
*/
pub struct SQLiteDatabase {
base: WalletDatabase,
mock: bool, // default = { false }
dir_path: String,
file_path: String,
db: *mut sqlite3::Connection, // default = { nullptr }
}
impl Drop for SQLiteDatabase {
fn drop(&mut self) {
todo!();
/*
Cleanup();
*/
}
}
impl SQLiteDatabase {
/**
| These functions are unused
|
*/
pub fn add_ref(&mut self) {
todo!();
/*
assert(false);
*/
}
pub fn remove_ref(&mut self) {
todo!();
/*
assert(false);
*/
}
/**
| No-op. See comment on SQLiteDatabase::Flush
|
| No-ops
|
| SQLite always flushes everything to
| the database file after each transaction
| (each Read/Write/Erase that we do is
| its own transaction unless we called
|
| TxnBegin) so there is no need to have
| Flush or Periodic Flush.
|
| There is no DB env to reload, so ReloadDbEnv
| has nothing to do
|
*/
pub fn flush(&mut self) { }
pub fn periodic_flush(&mut self) -> bool {
todo!();
/*
return false;
*/
}
pub fn reload_db_env(&mut self) {
}
pub fn increment_update_counter(&mut self) {
todo!();
/*
++nUpdateCounter;
*/
}
pub fn filename(&mut self) -> String {
todo!();
/*
return m_file_path;
*/
}
pub fn format(&mut self) -> String {
todo!();
/*
return "sqlite";
*/
}
/**
| Create DB handle to real database
|
*/
pub fn new(
dir_path: &Path,
file_path: &Path,
mock: Option<bool>) -> Self {
let mock: bool = mock.unwrap_or(false);
todo!();
/*
: WalletDatabase(), m_mock(mock), m_dir_path(fs::PathToString(dir_path)), m_file_path(fs::PathToString(file_path))
{
LOCK(g_sqlite_mutex);
LogPrintf("Using SQLite Version %s\n", SQLiteDatabaseVersion());
LogPrintf("Using wallet %s\n", m_dir_path);
if (++g_sqlite_count == 1) {
// Setup logging
int ret = sqlite3_config(SQLITE_CONFIG_LOG, ErrorLogCallback, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to setup error log: %s\n", sqlite3_errstr(ret)));
}
// Force serialized threading mode
ret = sqlite3_config(SQLITE_CONFIG_SERIALIZED);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to configure serialized threading mode: %s\n", sqlite3_errstr(ret)));
}
}
int ret = sqlite3_initialize(); // This is a no-op if sqlite3 is already initialized
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to initialize SQLite: %s\n", sqlite3_errstr(ret)));
}
}
try {
Open();
} catch (const std::runtime_error&) {
// If open fails, cleanup this object and rethrow the exception
Cleanup();
throw;
}
*/
}
pub fn cleanup(&mut self) {
todo!();
/*
Close();
LOCK(g_sqlite_mutex);
if (--g_sqlite_count == 0) {
int ret = sqlite3_shutdown();
if (ret != SQLITE_OK) {
LogPrintf("SQLiteDatabase: Failed to shutdown SQLite: %s\n", sqlite3_errstr(ret));
}
}
*/
}
pub fn verify(&mut self, error: &mut BilingualStr) -> bool {
todo!();
/*
assert(m_db);
// Check the application ID matches our network magic
auto read_result = ReadPragmaInteger(m_db, "application_id", "the application id", error);
if (!read_result.has_value()) return false;
uint32_t app_id = static_cast<uint32_t>(read_result.value());
uint32_t net_magic = ReadBE32(Params().MessageStart());
if (app_id != net_magic) {
error = strprintf(_("SQLiteDatabase: Unexpected application id. Expected %u, got %u"), net_magic, app_id);
return false;
}
// Check our schema version
read_result = ReadPragmaInteger(m_db, "user_version", "sqlite wallet schema version", error);
if (!read_result.has_value()) return false;
int32_t user_ver = read_result.value();
if (user_ver != WALLET_SCHEMA_VERSION) {
error = strprintf(_("SQLiteDatabase: Unknown sqlite wallet schema version %d. Only version %d is supported"), user_ver, WALLET_SCHEMA_VERSION);
return false;
}
sqlite3_stmt* stmt{nullptr};
int ret = sqlite3_prepare_v2(m_db, "PRAGMA integrity_check", -1, &stmt, nullptr);
if (ret != SQLITE_OK) {
sqlite3_finalize(stmt);
error = strprintf(_("SQLiteDatabase: Failed to prepare statement to verify database: %s"), sqlite3_errstr(ret));
return false;
}
while (true) {
ret = sqlite3_step(stmt);
if (ret == SQLITE_DONE) {
break;
}
if (ret != SQLITE_ROW) {
error = strprintf(_("SQLiteDatabase: Failed to execute statement to verify database: %s"), sqlite3_errstr(ret));
break;
}
const char* msg = (const char*)sqlite3_column_text(stmt, 0);
if (!msg) {
error = strprintf(_("SQLiteDatabase: Failed to read database verification error: %s"), sqlite3_errstr(ret));
break;
}
std::string str_msg(msg);
if (str_msg == "ok") {
continue;
}
if (error.empty()) {
error = _("Failed to verify database") + Untranslated("\n");
}
error += Untranslated(strprintf("%s\n", str_msg));
}
sqlite3_finalize(stmt);
return error.empty();
*/
}
/**
| Open the database if it is not already
| opened
|
*/
pub fn open(&mut self) {
todo!();
/*
int flags = SQLITE_OPEN_FULLMUTEX | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
if (m_mock) {
flags |= SQLITE_OPEN_MEMORY; // In memory database for mock db
}
if (m_db == nullptr) {
if (!m_mock) {
TryCreateDirectories(fs::PathFromString(m_dir_path));
}
int ret = sqlite3_open_v2(m_file_path.c_str(), &m_db, flags, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to open database: %s\n", sqlite3_errstr(ret)));
}
ret = sqlite3_extended_result_codes(m_db, 1);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to enable extended result codes: %s\n", sqlite3_errstr(ret)));
}
}
if (sqlite3_db_readonly(m_db, "main") != 0) {
throw std::runtime_error("SQLiteDatabase: Database opened in readonly mode but read-write permissions are needed");
}
// Acquire an exclusive lock on the database
// First change the locking mode to exclusive
SetPragma(m_db, "locking_mode", "exclusive", "Unable to change database locking mode to exclusive");
// Now begin a transaction to acquire the exclusive lock. This lock won't be released until we close because of the exclusive locking mode.
int ret = sqlite3_exec(m_db, "BEGIN EXCLUSIVE TRANSACTION", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error("SQLiteDatabase: Unable to obtain an exclusive lock on the database, is it being used by another instance of " PACKAGE_NAME "?\n");
}
ret = sqlite3_exec(m_db, "COMMIT", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Unable to end exclusive lock transaction: %s\n", sqlite3_errstr(ret)));
}
// Enable fullfsync for the platforms that use it
SetPragma(m_db, "fullfsync", "true", "Failed to enable fullfsync");
if (gArgs.GetBoolArg("-unsafesqlitesync", false)) {
// Use normal synchronous mode for the journal
LogPrintf("WARNING SQLite is configured to not wait for data to be flushed to disk. Data loss and corruption may occur.\n");
SetPragma(m_db, "synchronous", "OFF", "Failed to set synchronous mode to OFF");
}
// Make the table for our key-value pairs
// First check that the main table exists
sqlite3_stmt* check_main_stmt{nullptr};
ret = sqlite3_prepare_v2(m_db, "SELECT name FROM sqlite_master WHERE type='table' AND name='main'", -1, &check_main_stmt, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to prepare statement to check table existence: %s\n", sqlite3_errstr(ret)));
}
ret = sqlite3_step(check_main_stmt);
if (sqlite3_finalize(check_main_stmt) != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to finalize statement checking table existence: %s\n", sqlite3_errstr(ret)));
}
bool table_exists;
if (ret == SQLITE_DONE) {
table_exists = false;
} else if (ret == SQLITE_ROW) {
table_exists = true;
} else {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to execute statement to check table existence: %s\n", sqlite3_errstr(ret)));
}
// Do the db setup things because the table doesn't exist only when we are creating a new wallet
if (!table_exists) {
ret = sqlite3_exec(m_db, "CREATE TABLE main(key BLOB PRIMARY KEY NOT NULL, value BLOB NOT NULL)", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to create new database: %s\n", sqlite3_errstr(ret)));
}
// Set the application id
uint32_t app_id = ReadBE32(Params().MessageStart());
SetPragma(m_db, "application_id", strprintf("%d", static_cast<int32_t>(app_id)),
"Failed to set the application id");
// Set the user version
SetPragma(m_db, "user_version", strprintf("%d", WALLET_SCHEMA_VERSION),
"Failed to set the wallet schema version");
}
*/
}
/**
| Rewrite the entire database on disk
|
*/
pub fn rewrite(&mut self, skip: *const u8) -> bool {
todo!();
/*
// Rewrite the database using the VACUUM command: https://sqlite.org/lang_vacuum.html
int ret = sqlite3_exec(m_db, "VACUUM", nullptr, nullptr, nullptr);
return ret == SQLITE_OK;
*/
}
/**
| Back up the entire database to a file.
|
*/
pub fn backup(&self, dest: &String) -> bool {
todo!();
/*
sqlite3* db_copy;
int res = sqlite3_open(dest.c_str(), &db_copy);
if (res != SQLITE_OK) {
sqlite3_close(db_copy);
return false;
}
sqlite3_backup* backup = sqlite3_backup_init(db_copy, "main", m_db, "main");
if (!backup) {
LogPrintf("%s: Unable to begin backup: %s\n", __func__, sqlite3_errmsg(m_db));
sqlite3_close(db_copy);
return false;
}
// Specifying -1 will copy all of the pages
res = sqlite3_backup_step(backup, -1);
if (res != SQLITE_DONE) {
LogPrintf("%s: Unable to backup: %s\n", __func__, sqlite3_errstr(res));
sqlite3_backup_finish(backup);
sqlite3_close(db_copy);
return false;
}
res = sqlite3_backup_finish(backup);
sqlite3_close(db_copy);
return res == SQLITE_OK;
*/
}
/**
| Close the database
|
*/
pub fn close(&mut self) {
todo!();
/*
int res = sqlite3_close(m_db);
if (res != SQLITE_OK) {
throw std::runtime_error(strprintf("SQLiteDatabase: Failed to close database: %s\n", sqlite3_errstr(res)));
}
m_db = nullptr;
*/
}
/**
| Make a SQLiteBatch connected to this
| database
|
*/
pub fn make_batch(&mut self, flush_on_close: Option<bool>) -> Box<DatabaseBatch> {
let flush_on_close: bool = flush_on_close.unwrap_or(true);
todo!();
/*
// We ignore flush_on_close because we don't do manual flushing for SQLite
return std::make_unique<SQLiteBatch>(*this);
*/
}
}