mirror of
https://github.com/dolthub/dolt.git
synced 2026-01-25 10:26:22 -06:00
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
// Copyright 2022 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"database/sql"
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"fmt"
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"os"
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_ "github.com/go-sql-driver/mysql"
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"golang.org/x/sync/errgroup"
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)
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const clients = 16
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const iters = 10
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var sqlScript = []string{
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"call dolt_checkout('main');",
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"select * from dolt_log order by date desc limit 10;",
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}
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var (
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database = "SHAQ"
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user = "root"
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pass = ""
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host = "127.0.0.1"
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port = "3306"
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)
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// Runs |sqlScript| concurrently on multiple clients.
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// Useful for repoducing concurrency bugs.
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func main() {
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connStr := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s",
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user, pass, host, port, database)
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db, err := sql.Open("mysql", connStr)
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maybeExit(err)
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eg, ctx := errgroup.WithContext(context.Background())
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for i := 0; i < clients; i++ {
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eg.Go(func() (err error) {
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conn, err := db.Conn(ctx)
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if err != nil {
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return err
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}
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defer func() {
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cerr := conn.Close()
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if err != nil {
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err = cerr
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}
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}()
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for j := 0; j < iters; j++ {
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if err = query(ctx, conn); err != nil {
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return err
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}
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}
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return
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})
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}
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maybeExit(eg.Wait())
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}
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func query(ctx context.Context, conn *sql.Conn) error {
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for i := range sqlScript {
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_, err := conn.ExecContext(ctx, sqlScript[i])
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if err != nil {
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return err
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}
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}
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return nil
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}
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func maybeExit(err error) {
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if err != nil {
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fmt.Println(err.Error())
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os.Exit(1)
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}
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}
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