diff options
Diffstat (limited to 'ml/Database.h')
-rw-r--r-- | ml/Database.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/ml/Database.h b/ml/Database.h deleted file mode 100644 index f14755d1bd..0000000000 --- a/ml/Database.h +++ /dev/null @@ -1,131 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#ifndef ML_DATABASE_H -#define ML_DATABASE_H - -#include "Dimension.h" -#include "ml-private.h" - -#include "json/single_include/nlohmann/json.hpp" - -namespace ml { - -class Statement { -public: - using RowCallback = std::function<void(sqlite3_stmt *Stmt)>; - -public: - Statement(const char *RawStmt) : RawStmt(RawStmt), ParsedStmt(nullptr) {} - - template<typename ...ArgTypes> - bool exec(sqlite3 *Conn, RowCallback RowCb, ArgTypes ...Args) { - if (!prepare(Conn)) - return false; - - switch (bind(1, Args...)) { - case 0: - return false; - case sizeof...(Args): - break; - default: - return resetAndClear(false); - } - - while (true) { - switch (int RC = sqlite3_step_monitored(ParsedStmt)) { - case SQLITE_BUSY: case SQLITE_LOCKED: - usleep(SQLITE_INSERT_DELAY * USEC_PER_MS); - continue; - case SQLITE_ROW: - RowCb(ParsedStmt); - continue; - case SQLITE_DONE: - return resetAndClear(true); - default: - error("Stepping through '%s' returned rc=%d", RawStmt, RC); - return resetAndClear(false); - } - } - } - - ~Statement() { - if (!ParsedStmt) - return; - - int RC = sqlite3_finalize(ParsedStmt); - if (RC != SQLITE_OK) - error("Could not properly finalize statement (rc=%d)", RC); - } - -private: - bool prepare(sqlite3 *Conn); - - bool bindValue(size_t Pos, const int Value); - bool bindValue(size_t Pos, const std::string &Value); - - template<typename ArgType, typename ...ArgTypes> - size_t bind(size_t Pos, ArgType T) { - return bindValue(Pos, T); - } - - template<typename ArgType, typename ...ArgTypes> - size_t bind(size_t Pos, ArgType T, ArgTypes ...Args) { - return bindValue(Pos, T) + bind(Pos + 1, Args...); - } - - bool resetAndClear(bool Ret); - -private: - const char *RawStmt; - sqlite3_stmt *ParsedStmt; -}; - -class Database { -private: - static const char *SQL_CREATE_ANOMALIES_TABLE; - static const char *SQL_INSERT_ANOMALY; - static const char *SQL_SELECT_ANOMALY; - static const char *SQL_SELECT_ANOMALY_EVENTS; - -public: - Database(const std::string &Path); - - ~Database(); - - template<typename ...ArgTypes> - bool insertAnomaly(ArgTypes... Args) { - Statement::RowCallback RowCb = [](sqlite3_stmt *Stmt) { (void) Stmt; }; - return InsertAnomalyStmt.exec(Conn, RowCb, Args...); - } - - template<typename ...ArgTypes> - bool getAnomalyInfo(nlohmann::json &Json, ArgTypes&&... Args) { - Statement::RowCallback RowCb = [&](sqlite3_stmt *Stmt) { - const char *Text = static_cast<const char *>(sqlite3_column_blob(Stmt, 0)); - Json = nlohmann::json::parse(Text); - }; - return GetAnomalyInfoStmt.exec(Conn, RowCb, Args...); - } - - template<typename ...ArgTypes> - bool getAnomaliesInRange(std::vector<std::pair<time_t, time_t>> &V, ArgTypes&&... Args) { - Statement::RowCallback RowCb = [&](sqlite3_stmt *Stmt) { - V.push_back({ - sqlite3_column_int64(Stmt, 0), - sqlite3_column_int64(Stmt, 1) - }); - }; - return GetAnomaliesInRangeStmt.exec(Conn, RowCb, Args...); - } - -private: - sqlite3 *Conn; - - Statement InsertAnomalyStmt{SQL_INSERT_ANOMALY}; - Statement GetAnomalyInfoStmt{SQL_SELECT_ANOMALY}; - Statement GetAnomaliesInRangeStmt{SQL_SELECT_ANOMALY_EVENTS}; -}; - -} - -#endif /* ML_DATABASE_H */ |