146 lines
3.9 KiB
C++
146 lines
3.9 KiB
C++
/*
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* This file is a part of Winix
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* and is distributed under the 2-Clause BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2021, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "migration.h"
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#include "core/log.h"
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#include "finder.h"
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#include <ctime>
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namespace Winix
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{
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bool Migration::do_migration(morm::ModelConnector * model_connector, morm::Model & model)
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{
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model.set_connector(model_connector);
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std::wstring table_name;
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model.get_table_name(table_name);
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morm::Finder<Migration> finder(model_connector);
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Migration migration = finder.
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select().
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where().
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eq(L"table_name", table_name).
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get();
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int current_table_version = 0;
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int old_table_version = 0;
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if( migration.found() )
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{
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old_table_version = current_table_version = migration.table_version;
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}
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else
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{
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migration.set_save_mode(morm::Model::DO_INSERT_ON_SAVE);
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migration.table_name = table_name;
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}
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migration.migration_date.FromTime(std::time(0));
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bool migration_status = model.do_migration(current_table_version);
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if( current_table_version != old_table_version )
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{
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migration.table_version = current_table_version;
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migration_status = migration.save();
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pt::Log * log = model_connector->get_logger();
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if( log )
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{
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(*log) << pt::Log::log2 << "Migration: table " << table_name << " has been migrated to version " << current_table_version << pt::Log::logend;
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}
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if( !migration_status && log )
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{
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(*log) << pt::Log::log1 << "Migration: table " << table_name << " has been migrated to version " << current_table_version;
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(*log) << " but there was a problem with saving this information in the migration table." << pt::Log::logend;
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(*log) << "Make sure the migration table is created and save/update following record there:" << pt::Log::logend;
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(*log) << migration << pt::Log::logend;
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}
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}
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return migration_status;
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}
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bool Migration::do_migration(int & current_table_version)
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{
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bool ok = true;
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ok = ok && morm::Model::do_migration(current_table_version, 1, this, &Migration::do_migration_to_1);
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ok = ok && morm::Model::do_migration(current_table_version, 2, this, &Migration::do_migration_to_2);
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return ok;
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}
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bool Migration::do_migration_to_1()
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{
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const char * str = R"sql(
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create schema core
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);
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)sql";
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return db_query(str);
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}
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bool Migration::do_migration_to_2()
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{
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// IMPROVEME
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// what about 'create schema core'?
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// may the name of a schema (core) should be a parameter in the config?
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const char * str = R"sql(
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create table core.migration (
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id serial,
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table_name varchar(255),
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table_version int,
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migration_date timestamp without time zone,
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primary key(id)
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);
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)sql";
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return db_query(str);
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}
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}
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