94 lines
2.5 KiB
Go
94 lines
2.5 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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"context"
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"crypto/rand"
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"encoding/hex"
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"net/url"
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"strings"
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"github.com/spacemonkeygo/monkit/v3"
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"github.com/zeebo/errs"
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"storj.io/common/context2"
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"storj.io/storj/private/dbutil"
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"storj.io/storj/private/dbutil/pgutil"
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"storj.io/storj/private/tagsql"
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)
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var mon = monkit.Package()
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// CreateRandomTestingSchemaName creates a random schema name string.
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func CreateRandomTestingSchemaName(n int) string {
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data := make([]byte, n)
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_, _ = rand.Read(data)
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return hex.EncodeToString(data)
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}
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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(ctx context.Context, connStr string, schemaPrefix 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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schemaName := schemaPrefix + "-" + CreateRandomTestingSchemaName(8)
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masterDB, err := tagsql.Open(ctx, "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.PingContext(ctx)
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if err != nil {
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return nil, errs.New("Could not open masterDB at conn %q: %w", connStr, err)
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}
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_, err = masterDB.Exec(ctx, "CREATE DATABASE "+pgutil.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 tagsql.DB) error {
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ctx := context2.WithoutCancellation(ctx)
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_, err := cleanupDB.Exec(ctx, "DROP DATABASE "+pgutil.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 := tagsql.Open(ctx, "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(ctx, sqlDB, "tmp_cockroach", 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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