snapshot of https://github.com/ory/keto.git (master, 2026-09-16; blobs > 131072B omitted)

internal/driver/pop_connection.go

@@ -0,0 +1,84 @@
+// Copyright © 2023 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+package driver
+
+import (
+	"context"
+	"time"
+
+	"github.com/cenkalti/backoff/v3"
+	"github.com/pkg/errors"
+
+	"github.com/ory/pop/v6"
+	"github.com/ory/x/sqlcon"
+)
+
+func (r *RegistryDefault) PopConnectionWithOpts(ctx context.Context, popOpts ...func(*pop.ConnectionDetails)) (*pop.Connection, error) {
+	pool, idlePool, connMaxLifetime, connMaxIdleTime, cleanedDSN := sqlcon.ParseConnectionOptions(r.Logger(), r.Config(ctx).DSN())
+	connDetails := &pop.ConnectionDetails{
+		URL:             sqlcon.FinalizeDSN(r.Logger(), cleanedDSN),
+		IdlePool:        idlePool,
+		ConnMaxLifetime: connMaxLifetime,
+		ConnMaxIdleTime: connMaxIdleTime,
+		Pool:            pool,
+		TracerProvider:  r.Tracer(ctx).Provider(),
+	}
+	for _, o := range popOpts {
+		o(connDetails)
+	}
+
+	bc := backoff.NewExponentialBackOff()
+	bc.MaxElapsedTime = time.Minute * 5
+	bc.Reset()
+
+	var conn *pop.Connection
+	if err := backoff.Retry(func() (err error) {
+		conn, err = pop.NewConnection(connDetails)
+		if err != nil {
+			r.Logger().WithError(err).Error("Unable to connect to database, retrying.")
+			return errors.WithStack(err)
+		}
+
+		if err := conn.Open(); err != nil {
+			r.Logger().WithError(err).Error("Unable to open the database connection, retrying.")
+			return errors.WithStack(err)
+		}
+
+		if err := conn.Store.(interface{ Ping() error }).Ping(); err != nil {
+			r.Logger().WithError(err).Error("Unable to ping the database connection, retrying.")
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}, bc); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	// Wrap the connection with the context before starting the close
+	// goroutine. WithContext reads conn.Store (via copy), and conn.Close sets
+	// conn.Store to nil; if the context is already canceled, the goroutine
+	// would otherwise race the read. Ordering the read first makes it
+	// happen-before the goroutine starts.
+	wrapped := conn.WithContext(ctx)
+
+	// Close this connection when the context is closed.
+	go func() {
+		<-ctx.Done()
+		if err := conn.Close(); err != nil {
+			r.Logger().WithError(err).Error("Unable to close database connection")
+		}
+	}()
+
+	return wrapped, nil
+}
+
+// PopConnection returns the standard connection that is kept for the whole time.
+func (r *RegistryDefault) PopConnection(ctx context.Context) (*pop.Connection, error) {
+	if r.conn == nil {
+		var err error
+		r.conn, err = r.PopConnectionWithOpts(ctx, r.dbOpts...)
+		return r.conn, err
+	}
+	return r.conn, nil
+}