update deps, minimise memory allocations

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

conn.go

@@ -58,7 +58,7 @@ func (w *wrapperConn) Close() error {
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Close", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Close", getCallerName(), td, err)...)
 	}
 
 	return err
@@ -83,7 +83,7 @@ func (w *wrapperConn) Begin() (driver.Tx, error) {
 		w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Begin", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Begin", getCallerName(), td, err)...)
 		}
 		return nil, err
 	}
@@ -91,7 +91,7 @@ func (w *wrapperConn) Begin() (driver.Tx, error) {
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Begin", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Begin", getCallerName(), td, err)...)
 	}
 
 	return &wrapperTx{tx: tx, opts: w.opts, ctx: ctx}, nil
@@ -99,11 +99,11 @@ func (w *wrapperConn) Begin() (driver.Tx, error) {
 
 // BeginTx implements driver.ConnBeginTx BeginTx
 func (w *wrapperConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
+	name := getQueryName(ctx)
 	nctx, span := w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	span.AddLabels("db.method", "BeginTx")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	labels := []string{labelMethod, "BeginTx", labelQuery, name}
@@ -123,13 +123,13 @@ func (w *wrapperConn) BeginTx(ctx context.Context, opts driver.TxOptions) (drive
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 		span.SetStatus(tracer.SpanStatusError, err.Error())
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "BeginTx", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "BeginTx", getCallerName(), td, err)...)
 		}
 		return nil, err
 	}
 	w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "BeginTx", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "BeginTx", getCallerName(), td, err)...)
 	}
 	return &wrapperTx{tx: tx, opts: w.opts, ctx: ctx, span: span}, nil
 }
@@ -153,7 +153,7 @@ func (w *wrapperConn) Prepare(query string) (driver.Stmt, error) {
 		w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Prepare", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Prepare", getCallerName(), td, err)...)
 		}
 		return nil, err
 	}
@@ -162,7 +162,7 @@ func (w *wrapperConn) Prepare(query string) (driver.Stmt, error) {
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Prepare", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Prepare", getCallerName(), td, err)...)
 	}
 
 	return wrapStmt(stmt, query, w.opts), nil
@@ -173,15 +173,15 @@ func (w *wrapperConn) PrepareContext(ctx context.Context, query string) (driver.
 	var nctx context.Context
 	var span tracer.Span
 
+	name := getQueryName(ctx)
 	if w.ctx != nil {
 		nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	} else {
 		nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	}
 	span.AddLabels("db.method", "PrepareContext")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	labels := []string{labelMethod, "PrepareContext", labelQuery, name}
@@ -200,7 +200,7 @@ func (w *wrapperConn) PrepareContext(ctx context.Context, query string) (driver.
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 		span.SetStatus(tracer.SpanStatusError, err.Error())
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "PrepareContext", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "PrepareContext", getCallerName(), td, err)...)
 		}
 		return nil, err
 	}
@@ -208,7 +208,7 @@ func (w *wrapperConn) PrepareContext(ctx context.Context, query string) (driver.
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "PrepareContext", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "PrepareContext", getCallerName(), td, err)...)
 	}
 
 	return wrapStmt(stmt, query, w.opts), nil
@@ -242,7 +242,7 @@ func (w *wrapperConn) Exec(query string, args []driver.Value) (driver.Result, er
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Exec", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Exec", getCallerName(), td, err)...)
 	}
 	return res, err
 }
@@ -252,15 +252,15 @@ func (w *wrapperConn) ExecContext(ctx context.Context, query string, args []driv
 	var nctx context.Context
 	var span tracer.Span
 
+	name := getQueryName(ctx)
 	if w.ctx != nil {
 		nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	} else {
 		nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	}
 	span.AddLabels("db.method", "ExecContext")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	defer span.Finish()
@@ -289,7 +289,7 @@ func (w *wrapperConn) ExecContext(ctx context.Context, query string, args []driv
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "ExecContext", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "ExecContext", getCallerName(), td, err)...)
 	}
 
 	return res, err
@@ -309,13 +309,17 @@ func (w *wrapperConn) Ping(ctx context.Context) error {
 	}
 
 	var nctx context.Context
+	nctx = ctx
+	/*
 		var span tracer.Span
 		if w.ctx != nil {
 			nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 		} else {
 			nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 		}
+		span.AddLabels("db.method", "Ping")
 		defer span.Finish()
+	*/
 	labels := []string{labelMethod, "Ping"}
 	ts := time.Now()
 	err := conn.Ping(nctx)
@@ -323,9 +327,9 @@ func (w *wrapperConn) Ping(ctx context.Context) error {
 	te := td.Seconds()
 	if err != nil {
 		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
-		span.SetStatus(tracer.SpanStatusError, err.Error())
+		// span.SetStatus(tracer.SpanStatusError, err.Error())
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Ping", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Ping", getCallerName(), td, err)...)
 		}
 		return err
 	} else {
@@ -364,7 +368,7 @@ func (w *wrapperConn) Query(query string, args []driver.Value) (driver.Rows, err
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Query", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Query", getCallerName(), td, err)...)
 	}
 	return rows, err
 }
@@ -374,15 +378,15 @@ func (w *wrapperConn) QueryContext(ctx context.Context, query string, args []dri
 	var nctx context.Context
 	var span tracer.Span
 
+	name := getQueryName(ctx)
 	if w.ctx != nil {
 		nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	} else {
 		nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	}
 	span.AddLabels("db.method", "QueryContext")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	defer span.Finish()
@@ -408,7 +412,7 @@ func (w *wrapperConn) QueryContext(ctx context.Context, query string, args []dri
 	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "QueryContext", getCallerName(), td, err)...).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "QueryContext", getCallerName(), td, err)...)
 	}
 
 	return rows, err

driver.go

@@ -80,7 +80,7 @@ func (w *wrapperDriver) Open(name string) (driver.Conn, error) {
 	td := time.Since(ts)
 
 	if w.opts.LoggerEnabled {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Open", getCallerName(), td, err)...).Log(w.ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(w.ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(w.ctx, "Open", getCallerName(), td, err)...)
 	}
 	if err != nil {
 		return nil, err

go.mod

@@ -1,8 +1,18 @@
 module go.unistack.org/micro-wrapper-sql/v3
 
-go 1.20
+go 1.21
+
+toolchain go1.23.1
 
 require (
-	go.unistack.org/micro-wrapper-requestid/v3 v3.8.7
+	go.unistack.org/micro-wrapper-requestid/v3 v3.9.2
-	go.unistack.org/micro/v3 v3.10.25
+	go.unistack.org/micro/v3 v3.10.91
+)
+
+require (
+	go.unistack.org/micro-proto/v3 v3.4.1 // indirect
+	golang.org/x/sys v0.25.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
+	google.golang.org/grpc v1.67.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 )

go.sum

@@ -1,10 +1,29 @@
-github.com/imdario/mergo v0.3.14/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
+go.unistack.org/micro-proto/v3 v3.4.1 h1:UTjLSRz2YZuaHk9iSlVqqsA50JQNAEK2ZFboGqtEa9Q=
-github.com/silas/dag v0.0.0-20211117232152-9d50aa809f35/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+go.unistack.org/micro-proto/v3 v3.4.1/go.mod h1:okx/cnOhzuCX0ggl/vToatbCupi0O44diiiLLsZ93Zo=
-go.unistack.org/micro-wrapper-requestid/v3 v3.8.7 h1:gXyiO7gPT0wNE7XEJIrwS2Y4cqylbeBMmlNYGwIS3io=
+go.unistack.org/micro-wrapper-requestid/v3 v3.8.10 h1:9QZy6w1HU2RCppZ1t8wJsDg1pk9RbvzUFYurq3Ai29Y=
-go.unistack.org/micro-wrapper-requestid/v3 v3.8.7/go.mod h1:W92jAyoOoTFgGXgYu26BZi+R+IwJVH5N+BPnnp0NuiY=
+go.unistack.org/micro-wrapper-requestid/v3 v3.8.10/go.mod h1:3tY5+DwQM7l07chnpu/Wzwnne/ZV75VsUwXR54/WYzo=
-go.unistack.org/micro/v3 v3.10.19/go.mod h1:XIArw29f0b3uvF4cq96X/nQt2f0J2OGnjh8J+DBbC0s=
+go.unistack.org/micro-wrapper-requestid/v3 v3.9.2 h1:Wu0oIGJieH37xroCjlaPivuqTGmv5l5KWgVaRQWEQMY=
-go.unistack.org/micro/v3 v3.10.25 h1:A0epdZHOqjnXx103wwFhPKgmvVVbScvfbmn3HmHz1wE=
+go.unistack.org/micro-wrapper-requestid/v3 v3.9.2/go.mod h1:cqgjdSSASTnOLjvwndP9bi0b8DbuoKbDII884R5puwU=
-go.unistack.org/micro/v3 v3.10.25/go.mod h1:ALkeXpqChYDjx8KPi7tz9mmIyOnob6nlNswsg8BnZjQ=
+go.unistack.org/micro/v3 v3.10.57 h1:VxG7Cs7kBOgxgQlP+K8TvTxIgh2pmqAwmAaKdTAQNtQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+go.unistack.org/micro/v3 v3.10.57/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+go.unistack.org/micro/v3 v3.10.91 h1:vuJY4tXwpqimwIkEJ3TozMYNVQQs+C5QMlQWPgSY/YM=
+go.unistack.org/micro/v3 v3.10.91/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda h1:LI5DOvAxUPMv/50agcLLoo+AdWc1irS9Rzz4vPuD1V4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:pPJltXNxVzT4pK9yD8vR9X75DaWYYmLGMsEvBfFQZzQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
+google.golang.org/grpc v1.63.2 h1:MUeiw1B2maTVZthpU5xvASfTh3LDbxHd6IJ6QQVU+xM=
+google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
+google.golang.org/grpc v1.67.0 h1:IdH9y6PF5MPSdAntIcpjQ+tXO41pcQsfZV2RxtQgVcw=
+google.golang.org/grpc v1.67.0/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=

options.go

@@ -13,8 +13,6 @@ import (
 var (
 	// DefaultMeterStatsInterval holds default stats interval
 	DefaultMeterStatsInterval = 5 * time.Second
-	// DefaultMeterMetricPrefix holds default metric prefix
-	DefaultMeterMetricPrefix = "micro_sql_"
 	// DefaultLoggerObserver used to prepare labels for logger
 	DefaultLoggerObserver = func(ctx context.Context, method string, query string, td time.Duration, err error) []interface{} {
 		labels := []interface{}{"db.method", method, "took", fmt.Sprintf("%v", td)}
@@ -29,19 +27,19 @@ var (
 )
 
 var (
-	MaxOpenConnections = "max_open_conn"
+	MaxOpenConnections = "micro_sql_max_open_conn"
-	OpenConnections    = "open_conn"
+	OpenConnections    = "micro_sql_open_conn"
-	InuseConnections   = "inuse_conn"
+	InuseConnections   = "micro_sql_inuse_conn"
-	IdleConnections    = "idle_conn"
+	IdleConnections    = "micro_sql_idle_conn"
-	WaitConnections    = "waited_conn"
+	WaitConnections    = "micro_sql_waited_conn"
-	BlockedSeconds     = "blocked_seconds"
+	BlockedSeconds     = "micro_sql_blocked_seconds"
-	MaxIdleClosed      = "max_idle_closed"
+	MaxIdleClosed      = "micro_sql_max_idle_closed"
-	MaxIdletimeClosed  = "closed_max_idle"
+	MaxIdletimeClosed  = "micro_sql_closed_max_idle"
-	MaxLifetimeClosed  = "closed_max_lifetime"
+	MaxLifetimeClosed  = "micro_sql_closed_max_lifetime"
 
-	meterRequestTotal               = "request_total"
+	meterRequestTotal               = "micro_sql_request_total"
-	meterRequestLatencyMicroseconds = "latency_microseconds"
+	meterRequestLatencyMicroseconds = "micro_sql_latency_microseconds"
-	meterRequestDurationSeconds     = "request_duration_seconds"
+	meterRequestDurationSeconds     = "micro_sql_request_duration_seconds"
 
 	labelUnknown  = "unknown"
 	labelQuery    = "db_statement"
@@ -60,7 +58,6 @@ type Options struct {
 	Tracer             tracer.Tracer
 	DatabaseHost       string
 	DatabaseName       string
-	MeterMetricPrefix  string
 	MeterStatsInterval time.Duration
 	LoggerLevel        logger.Level
 	LoggerEnabled      bool
@@ -77,7 +74,6 @@ func NewOptions(opts ...Option) Options {
 		Meter:              meter.DefaultMeter,
 		Tracer:             tracer.DefaultTracer,
 		MeterStatsInterval: DefaultMeterStatsInterval,
-		MeterMetricPrefix:  DefaultMeterMetricPrefix,
 		LoggerLevel:        logger.ErrorLevel,
 		LoggerObserver:     DefaultLoggerObserver,
 	}
@@ -86,7 +82,6 @@ func NewOptions(opts ...Option) Options {
 	}
 
 	options.Meter = options.Meter.Clone(
-		meter.MetricPrefix(options.MeterMetricPrefix),
 		meter.Labels(
 			labelHost, options.DatabaseHost,
 			labelDatabase, options.DatabaseName,
@@ -105,13 +100,6 @@ func MetricInterval(td time.Duration) Option {
 	}
 }
 
-// MetricPrefix specifies prefix for each metric
-func MetricPrefix(pref string) Option {
-	return func(o *Options) {
-		o.MeterMetricPrefix = pref
-	}
-}
-
 func DatabaseHost(host string) Option {
 	return func(o *Options) {
 		o.DatabaseHost = host

stmt.go

@@ -47,7 +47,7 @@ func (w *wrapperStmt) Close() error {
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Close", getCallerName(), td, err)).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Close", getCallerName(), td, err)...)
 	}
 	return err
 }
@@ -88,7 +88,7 @@ func (w *wrapperStmt) Exec(args []driver.Value) (driver.Result, error) {
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Exec", getCallerName(), td, err)).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Exec", getCallerName(), td, err)...)
 	}
 
 	return res, err
@@ -116,7 +116,7 @@ func (w *wrapperStmt) Query(args []driver.Value) (driver.Rows, error) {
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Query", getCallerName(), td, err)).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "Query", getCallerName(), td, err)...)
 	}
 
 	return rows, err
@@ -136,19 +136,19 @@ func (w *wrapperStmt) ExecContext(ctx context.Context, args []driver.NamedValue)
 	var nctx context.Context
 	var span tracer.Span
 
+	name := getQueryName(ctx)
 	if w.ctx != nil {
 		nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	} else {
 		nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	}
 	span.AddLabels("db.method", "ExecContext")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
 	defer span.Finish()
 	if len(args) > 0 {
 		span.AddLabels("db.args", fmt.Sprintf("%v", namedValueToLabels(args)))
 	}
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	labels := []string{labelMethod, "ExecContext", labelQuery, name}
@@ -168,7 +168,7 @@ func (w *wrapperStmt) ExecContext(ctx context.Context, args []driver.NamedValue)
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "ExecContext", name, td, err)).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "ExecContext", name, td, err)...)
 		}
 		return res, err
 	}
@@ -179,7 +179,7 @@ func (w *wrapperStmt) ExecContext(ctx context.Context, args []driver.NamedValue)
 		span.SetStatus(tracer.SpanStatusError, err.Error())
 
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "ExecContext", name, 0, err)).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "ExecContext", name, 0, err)...)
 		}
 		return nil, err
 	}
@@ -198,7 +198,7 @@ func (w *wrapperStmt) ExecContext(ctx context.Context, args []driver.NamedValue)
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "ExecContext", name, td, err)).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "ExecContext", name, td, err)...)
 	}
 
 	return res, err
@@ -209,19 +209,19 @@ func (w *wrapperStmt) QueryContext(ctx context.Context, args []driver.NamedValue
 	var nctx context.Context
 	var span tracer.Span
 
+	name := getQueryName(ctx)
 	if w.ctx != nil {
 		nctx, span = w.opts.Tracer.Start(w.ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	} else {
 		nctx, span = w.opts.Tracer.Start(ctx, "sdk.database", tracer.WithSpanKind(tracer.SpanKindClient))
 	}
 	span.AddLabels("db.method", "QueryContext")
-	name := getQueryName(ctx)
 	span.AddLabels("db.statement", name)
 	defer span.Finish()
 	if len(args) > 0 {
 		span.AddLabels("db.args", fmt.Sprintf("%v", namedValueToLabels(args)))
 	}
-	if id, ok := ctx.Value(requestid.XRequestIDKey).(string); ok {
+	if id, ok := ctx.Value(requestid.XRequestIDKey{}).(string); ok {
 		span.AddLabels("x-request-id", id)
 	}
 	labels := []string{labelMethod, "QueryContext", labelQuery, name}
@@ -241,7 +241,7 @@ func (w *wrapperStmt) QueryContext(ctx context.Context, args []driver.NamedValue
 		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "QueryContext", name, td, err)).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "QueryContext", name, td, err)...)
 		}
 		return rows, err
 	}
@@ -253,7 +253,7 @@ func (w *wrapperStmt) QueryContext(ctx context.Context, args []driver.NamedValue
 		span.SetStatus(tracer.SpanStatusError, err.Error())
 
 		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "QueryContext", name, 0, err)).Log(ctx, w.opts.LoggerLevel)
+			w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "QueryContext", name, 0, err)...)
 		}
 		return nil, err
 	}
@@ -272,7 +272,7 @@ func (w *wrapperStmt) QueryContext(ctx context.Context, args []driver.NamedValue
 	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "QueryContext", name, td, err)).Log(ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(ctx, "QueryContext", name, td, err)...)
 	}
 
 	return rows, err

tx.go

@@ -32,7 +32,7 @@ func (w *wrapperTx) Commit() error {
 	}
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Commit", getCallerName(), td, err)).Log(w.ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(w.ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(w.ctx, "Commit", getCallerName(), td, err)...)
 	}
 
 	w.ctx = nil
@@ -54,7 +54,7 @@ func (w *wrapperTx) Rollback() error {
 	}
 
 	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
-		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Rollback", getCallerName(), td, err)).Log(w.ctx, w.opts.LoggerLevel)
+		w.opts.Logger.Log(w.ctx, w.opts.LoggerLevel, w.opts.LoggerObserver(w.ctx, "Rollback", getCallerName(), td, err)...)
 	}
 
 	w.ctx = nil