2f7465c294
this will allow us to inspect the type of `db.Driver()` on *sql.DB connections to correctly differentiate between pg and crdb conns. as a bonus, this moves all concerns about when to replace "cockroach://" with "postgres://" out of view, letting the thin shim "driver" take care of that. Change-Id: Ib24103ab7c508231e681f89a7321b623e4e125e9
78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package cockroachutil
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import (
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"database/sql"
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"net/url"
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"strings"
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"github.com/lib/pq"
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"github.com/zeebo/errs"
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"gopkg.in/spacemonkeygo/monkit.v2"
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"storj.io/storj/private/dbutil"
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)
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var mon = monkit.Package()
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// OpenUnique opens a temporary unique CockroachDB database that will be cleaned up when closed.
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// It is expected that this should normally be used by way of
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// "storj.io/storj/private/dbutil/tempdb".OpenUnique() instead of calling it directly.
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func OpenUnique(connStr string, schemaName string) (db *dbutil.TempDatabase, err error) {
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if !strings.HasPrefix(connStr, "cockroach://") {
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return nil, errs.New("expected a cockroachDB URI, but got %q", connStr)
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}
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masterDB, err := sql.Open("cockroach", connStr)
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if err != nil {
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return nil, errs.Wrap(err)
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}
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defer func() {
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err = errs.Combine(err, masterDB.Close())
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}()
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err = masterDB.Ping()
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if err != nil {
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return nil, errs.New("Could not open masterDB at conn %q: %v", connStr, err)
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}
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_, err = masterDB.Exec("CREATE DATABASE " + pq.QuoteIdentifier(schemaName))
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if err != nil {
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return nil, errs.Wrap(err)
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}
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cleanup := func(cleanupDB *sql.DB) error {
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_, err := cleanupDB.Exec("DROP DATABASE " + pq.QuoteIdentifier(schemaName))
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return errs.Wrap(err)
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}
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modifiedConnStr, err := changeDBTargetInConnStr(connStr, schemaName)
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if err != nil {
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return nil, errs.Combine(err, cleanup(masterDB))
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}
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sqlDB, err := sql.Open("cockroach", modifiedConnStr)
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if err != nil {
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return nil, errs.Combine(errs.Wrap(err), cleanup(masterDB))
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}
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dbutil.Configure(sqlDB, mon)
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return &dbutil.TempDatabase{
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DB: sqlDB,
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ConnStr: modifiedConnStr,
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Schema: schemaName,
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Driver: "cockroach",
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Implementation: dbutil.Cockroach,
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Cleanup: cleanup,
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}, nil
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}
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func changeDBTargetInConnStr(connStr string, newDBName string) (string, error) {
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connURL, err := url.Parse(connStr)
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if err != nil {
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return "", errs.Wrap(err)
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}
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connURL.Path = newDBName
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return connURL.String(), nil
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}
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