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62 lines
1.7 KiB
62 lines
1.7 KiB
#include "Schema.h"
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#include <io/debug.h>
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#include "migrations/1624829187_create_events.h"
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namespace db {
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namespace db_builder = db::migrations::builder;
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Schema::Schema(sql::Database* db) : m_db(db) {
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}
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uint32_t Schema::get_user_version() const {
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try {
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int user_version = m_db->execAndGet("PRAGMA user_version;");
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return user_version;
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} catch (std::exception& e) {
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std::cout << "Exception: " << e.what() << std::endl;
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return -1;
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}
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}
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void Schema::set_user_version(uint32_t version) {
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try {
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m_db->exec("PRAGMA user_version = " + std::to_string(version) + ";");
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} catch (std::exception& e) {
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std::cout << "Exception: " << e.what() << std::endl;
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}
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}
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void Schema::run_migrations() {
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assemble_migrations();
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if(migrations.begin() == migrations.end()) {
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DEBUG << "No migrations found...";
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return;
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}
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// TODO try and catch block
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// migration should stop on error and restore old schema
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uint32_t user_version = get_user_version();
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for(auto const& [epoch, migration] : migrations) {
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if(epoch <= user_version) {
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DEBUG << "Skipping: " << migration->get_migration_name();
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continue;
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}
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DEBUG << "migrating: " << migration->get_migration_name();
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try {
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m_db->exec(migration->get_statement());
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} catch (std::exception& e) {
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std::cout << "Exception: " << e.what() << std::endl;
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}
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}
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DEBUG << migrations.rbegin()->first;
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set_user_version(migrations.rbegin()->first);
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user_version = get_user_version();
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DEBUG << user_version;
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}
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void Schema::assemble_migrations() {
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migrations.emplace(1624829187, new db::migrations::m1624829187_create_events());
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}
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}
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