mirror of https://github.com/pressly/goose.git
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
package testdb
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import (
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"database/sql"
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"fmt"
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"log"
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"strconv"
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"time"
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_ "github.com/go-sql-driver/mysql"
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"github.com/ory/dockertest/v3"
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"github.com/ory/dockertest/v3/docker"
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)
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const (
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// https://hub.docker.com/_/mariadb
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MARIADB_IMAGE = "mariadb"
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MARIADB_VERSION = "10"
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MARIADB_DB = "testdb"
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MARIADB_USER = "tester"
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MARIADB_PASSWORD = "password1"
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)
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func newMariaDB(opts ...OptionsFunc) (*sql.DB, func(), error) {
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option := &options{}
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for _, f := range opts {
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f(option)
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}
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// Uses a sensible default on windows (tcp/http) and linux/osx (socket).
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pool, err := dockertest.NewPool("")
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if err != nil {
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return nil, nil, fmt.Errorf("failed to connect to docker: %v", err)
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}
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options := &dockertest.RunOptions{
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Repository: MARIADB_IMAGE,
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Tag: MARIADB_VERSION,
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Env: []string{
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"MARIADB_USER=" + MARIADB_USER,
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"MARIADB_PASSWORD=" + MARIADB_PASSWORD,
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"MARIADB_ROOT_PASSWORD=" + MARIADB_PASSWORD,
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"MARIADB_DATABASE=" + MARIADB_DB,
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},
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Labels: map[string]string{"goose_test": "1"},
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PortBindings: make(map[docker.Port][]docker.PortBinding),
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}
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if option.bindPort > 0 {
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options.PortBindings[docker.Port("3306/tcp")] = []docker.PortBinding{
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{HostPort: strconv.Itoa(option.bindPort)},
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}
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}
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container, err := pool.RunWithOptions(
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options,
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func(config *docker.HostConfig) {
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// Set AutoRemove to true so that stopped container goes away by itself.
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config.AutoRemove = true
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// config.PortBindings = options.PortBindings
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config.RestartPolicy = docker.RestartPolicy{Name: "no"}
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},
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)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to create docker container: %v", err)
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}
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cleanup := func() {
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if option.debug {
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// User must manually delete the Docker container.
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return
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}
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if err := pool.Purge(container); err != nil {
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log.Printf("failed to purge resource: %v", err)
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}
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}
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// MySQL DSN: username:password@protocol(address)/dbname?param=value
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dsn := fmt.Sprintf("%s:%s@(%s:%s)/%s?parseTime=true&multiStatements=true",
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MARIADB_USER,
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MARIADB_PASSWORD,
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"localhost",
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container.GetPort("3306/tcp"), // Fetch port dynamically assigned to container
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MARIADB_DB,
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)
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var db *sql.DB
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// Exponential backoff-retry, because the application in the container
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// might not be ready to accept connections yet. Add an extra sleep
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// because mariadb containers take much longer to startup.
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time.Sleep(5 * time.Second)
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if err := pool.Retry(func() error {
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var err error
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db, err = sql.Open("mysql", dsn)
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if err != nil {
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return err
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}
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return db.Ping()
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},
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); err != nil {
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return nil, cleanup, fmt.Errorf("could not connect to docker database: %v", err)
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}
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return db, cleanup, nil
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}
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