fix(session): handle redis logging properly (#2350)

This catches redis logs and displays them via our logging utility.

internal/session/provider_config.go

@@ -11,6 +11,7 @@ import (
 	"github.com/valyala/fasthttp"
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
+	"github.com/authelia/authelia/v4/internal/logging"
 	"github.com/authelia/authelia/v4/internal/utils"
 )
 
@@ -80,6 +81,7 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 
 			providerName = "redis-sentinel"
 			redisSentinelConfig = &redis.FailoverConfig{
+				Logger:           &redisLogger{logger: logging.Logger()},
 				MasterName:       configuration.Redis.HighAvailability.SentinelName,
 				SentinelAddrs:    addrs,
 				SentinelPassword: configuration.Redis.HighAvailability.SentinelPassword,
@@ -108,6 +110,7 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 			}
 
 			redisConfig = &redis.Config{
+				Logger:       newRedisLogger(),
 				Network:      network,
 				Addr:         addr,
 				Username:     configuration.Redis.Username,

internal/session/types.go

@@ -1,14 +1,17 @@
 package session
 
 import (
+	"context"
 	"time"
 
 	"github.com/fasthttp/session/v2"
 	"github.com/fasthttp/session/v2/providers/redis"
+	"github.com/sirupsen/logrus"
 	"github.com/tstranex/u2f"
 
 	"github.com/authelia/authelia/v4/internal/authentication"
 	"github.com/authelia/authelia/v4/internal/authorization"
+	"github.com/authelia/authelia/v4/internal/logging"
 )
 
 // ProviderConfig is the configuration used to create the session provider.
@@ -75,3 +78,15 @@ type OIDCWorkflowSession struct {
 	RequiredAuthorizationLevel authorization.Level
 	CreatedTimestamp           int64
 }
+
+func newRedisLogger() *redisLogger {
+	return &redisLogger{logger: logging.Logger()}
+}
+
+type redisLogger struct {
+	logger *logrus.Logger
+}
+
+func (l *redisLogger) Printf(_ context.Context, format string, v ...interface{}) {
+	l.logger.Tracef(format, v...)
+}