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fa429a5abf
* Create base schema for MySQL 8 * MySQL 8 schema changes to support advanced visibility * Create base MySQL 8 db interface and configs
102 lines
2.9 KiB
Go
102 lines
2.9 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package mysql
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import (
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"context"
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"fmt"
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"github.com/jmoiron/sqlx"
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"go.temporal.io/server/common/persistence/schema"
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"go.temporal.io/server/common/persistence/sql/sqlplugin"
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mysqlschemaV8 "go.temporal.io/server/schema/mysql/v8"
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)
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// db represents a logical connection to mysql database
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type dbV8 struct {
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db
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}
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var _ sqlplugin.AdminDB = (*dbV8)(nil)
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var _ sqlplugin.DB = (*dbV8)(nil)
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var _ sqlplugin.Tx = (*dbV8)(nil)
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// newDB returns an instance of DB, which is a logical
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// connection to the underlying mysql database
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func newDBV8(
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dbKind sqlplugin.DbKind,
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dbName string,
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xdb *sqlx.DB,
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tx *sqlx.Tx,
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) *dbV8 {
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mdb := &dbV8{
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db: db{
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dbKind: dbKind,
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dbName: dbName,
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db: xdb,
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tx: tx,
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},
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}
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mdb.conn = xdb
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if tx != nil {
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mdb.conn = tx
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}
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mdb.converter = &converter{}
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return mdb
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}
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// BeginTx starts a new transaction and returns a reference to the Tx object
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func (mdb *dbV8) BeginTx(ctx context.Context) (sqlplugin.Tx, error) {
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xtx, err := mdb.db.db.BeginTxx(ctx, nil)
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if err != nil {
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return nil, err
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}
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return newDBV8(mdb.dbKind, mdb.dbName, mdb.db.db, xtx), nil
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}
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// PluginName returns the name of the mysql plugin
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func (mdb *dbV8) PluginName() string {
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return PluginNameV8
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}
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// ExpectedVersion returns expected version.
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func (mdb *dbV8) ExpectedVersion() string {
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switch mdb.dbKind {
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case sqlplugin.DbKindMain:
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return mysqlschemaV8.Version
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case sqlplugin.DbKindVisibility:
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return mysqlschemaV8.VisibilityVersion
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default:
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panic(fmt.Sprintf("unknown db kind %v", mdb.dbKind))
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}
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}
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// VerifyVersion verify schema version is up to date
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func (mdb *dbV8) VerifyVersion() error {
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expectedVersion := mdb.ExpectedVersion()
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return schema.VerifyCompatibleVersion(mdb, mdb.dbName, expectedVersion)
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}
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