Feat/add sqllite to cpp pipeline (#206)

pipeline/src/services/sqlite/initialize.cc

@@ -0,0 +1,39 @@
+/**
+ * @file services/sqlite/initialize.cc
+ * @brief SqliteExportService::Initialize() implementation.
+ */
+
+#include <filesystem>
+#include <memory>
+#include <stdexcept>
+#include <string>
+
+#include "services/sqlite_export_service.h"
+#include "services/sqlite_export_service_helpers.h"
+
+void SqliteExportService::Initialize() {
+  if (db_handle_ != nullptr) {
+    throw std::runtime_error("SQLite export service is already initialized");
+  }
+
+  run_timestamp_utc_ = date_time_provider_->GetUtcTimestamp();
+  database_path_ = BuildDatabasePath();
+  std::filesystem::create_directories(database_path_.parent_path());
+
+  db_handle_ = sqlite_export_service_internal::OpenDatabase(database_path_);
+
+  try {
+    sqlite_export_service_internal::ExecSql(
+        db_handle_, "PRAGMA foreign_keys = ON;",
+        "Failed to enable SQLite foreign keys");
+    InitializeSchema();
+    PrepareStatements();
+    sqlite_export_service_internal::ExecSql(
+        db_handle_, "BEGIN IMMEDIATE TRANSACTION;",
+        "Failed to begin SQLite transaction");
+    transaction_open_ = true;
+  } catch (...) {
+    RollbackAndCloseNoThrow();
+    throw;
+  }
+}