fixup v3

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

.github/workflows/autoapprove.yml

@@ -0,0 +1,20 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        uses: hmarr/auto-approve-action@v3
+        if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/automerge.yml

@@ -0,0 +1,21 @@
+name: "automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'vtolstov'
+    steps:
+      - name: merge
+        id: merge
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/build.yml

@@ -3,19 +3,20 @@ on:
  push:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/codeql-analysis.yml

@@ -43,14 +43,14 @@ jobs:
 
     steps:
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     # Initializes the CodeQL tools for scanning.
     - name: init
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -61,7 +61,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -75,4 +75,4 @@ jobs:
     #   make release
 
     - name: analyze
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -1,4 +1,4 @@
-name: "prautomerge"
+name: "dependabot-automerge"
 
 on:
   pull_request_target:
@@ -9,21 +9,17 @@ permissions:
   contents: write
 
 jobs:
-  dependabot:
+  automerge:
     runs-on: ubuntu-latest
-    if: ${{ github.actor == 'dependabot[bot]' }}
+    if: github.actor == 'dependabot[bot]'
     steps:
       - name: metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.1.1
+        uses: dependabot/fetch-metadata@v1.3.6
         with:
           github-token: "${{ secrets.TOKEN }}"
-      - name: approve
-        run: gh pr review --approve "$PR_URL"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.TOKEN}}
       - name: merge
+        id: merge
         if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
         run: gh pr merge --auto --merge "$PR_URL"
         env:

.github/workflows/pr.yml

@@ -3,19 +3,20 @@ on:
   pull_request:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

README.md

@@ -1,8 +1,10 @@
-# micro-wrapper-sqlpackage postgres
+# micro-wrapper-sql
 
 Example for For postgres 
 
 ```go
+package storage
+
 import (
 	"fmt"
 	"net/url"
@@ -11,6 +13,7 @@ import (
 	"github.com/jackc/pgx/v4"
 	"github.com/jackc/pgx/v4/stdlib"
 	"github.com/jmoiron/sqlx"
+	wrapper "go.unistack.org/micro-wrapper-sql/v3"
 )
 
 func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
@@ -35,15 +38,26 @@ func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
 		"application_name":            cfg.AppName,
 	}
 	// may be needed for pbbouncer, needs to check
-	//dbConf.PreferSimpleProtocol = true
+	// dbConf.PreferSimpleProtocol = true
 	// register pgx conn
 	dsn := stdlib.RegisterConnConfig(dbConf)
 
 
-  sql.Register("micro-wrapper-sql", wrapper.WrapDriver(
+  wrapper.DefaultMeterStatsInterval = 1 * time.Second
-    &stdlib.Driver{}, 
+	logger.DefaultLogger = logger.NewLogger(logger.WithLevel(logger.DebugLevel))
-    wrapper.Tracer(some.NewTracer()),
+
-  ))
+	if err := logger.DefaultLogger.Init(); err != nil {
+		t.Fatal(err)
+	}
+
+  // for postgres user stdlib.GetDefaultDriver() or it fails
+	sql.Register("micro-wrapper-sql", wrapper.NewWrapper(&sqlite.Driver{},
+		wrapper.DatabaseHost("localhost"),
+		wrapper.DatabaseName("mydb"),
+		wrapper.LoggerLevel(logger.DebugLevel),
+		wrapper.LoggerEnabled(true),
+	))
+
   wdb, err := sql.Open("micro-wrapper-sql", dsn)
 	if err != nil {
 		return nil, err

common.go

@@ -3,24 +3,10 @@ package wrapper
 import (
 	"database/sql/driver"
 	"errors"
+	"fmt"
 )
 
-// ErrUnsupported is an error returned when the underlying driver doesn't provide a given function.
+//go:generate sh -c "go run gen.go > wrap_gen.go"
-var ErrUnsupported = errors.New("operation unsupported by the underlying driver")
-
-/*
-// newSpan creates a new opentracing.Span instance from the given context.
-func (t *tracer) newSpan(ctx context.Context) opentracing.Span {
-	name := t.nameFunc(ctx)
-	var opts []opentracing.StartSpanOption
-	parent := opentracing.SpanFromContext(ctx)
-	if parent != nil {
-		opts = append(opts, opentracing.ChildOf(parent.Context()))
-	}
-	span := t.t.StartSpan(name, opts...)
-	return span
-}
-*/
 
 // namedValueToValue converts driver arguments of NamedValue format to Value format. Implemented in the same way as in
 // database/sql ctxutil.go.
@@ -34,3 +20,18 @@ func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) {
 	}
 	return dargs, nil
 }
+
+// namedValueToLabels convert driver arguments to interface{} slice
+func namedValueToLabels(named []driver.NamedValue) []interface{} {
+	largs := make([]interface{}, 0, len(named)*2)
+	var name string
+	for _, param := range named {
+		if param.Name != "" {
+			name = param.Name
+		} else {
+			name = fmt.Sprintf("$%d", param.Ordinal)
+		}
+		largs = append(largs, fmt.Sprintf("%s=%s", name, param.Value))
+	}
+	return largs
+}

conn.go

@@ -3,114 +3,448 @@ package wrapper
 import (
 	"context"
 	"database/sql/driver"
+	"fmt"
+	"time"
+
+	"go.unistack.org/micro/v3/tracer"
+)
+
+var (
+	_ driver.Conn               = (*wrapperConn)(nil)
+	_ driver.ConnBeginTx        = (*wrapperConn)(nil)
+	_ driver.ConnPrepareContext = (*wrapperConn)(nil)
+	_ driver.Pinger             = (*wrapperConn)(nil)
+	_ driver.Validator          = (*wrapperConn)(nil)
+	_ driver.Queryer            = (*wrapperConn)(nil)
+	_ driver.QueryerContext     = (*wrapperConn)(nil)
+	_ driver.Execer             = (*wrapperConn)(nil)
+	_ driver.ExecerContext      = (*wrapperConn)(nil)
+	//	_ driver.Connector
+	//	_ driver.Driver
+	//	_ driver.DriverContext
 )
 
 // wrapperConn defines a wrapper for driver.Conn
 type wrapperConn struct {
-	conn driver.Conn
+	d     *wrapperDriver
-	opts Options
+	dname string
-}
+	conn  driver.Conn
-
+	opts  Options
-// Prepare implements driver.Conn Prepare
+	ctx   context.Context
-func (w *wrapperConn) Prepare(query string) (driver.Stmt, error) {
+	span  tracer.Span
-	stmt, err := w.conn.Prepare(query)
-	if err != nil {
-		return nil, err
-	}
-	return &wrapperStmt{stmt: stmt, opts: w.opts}, nil
 }
 
 // Close implements driver.Conn Close
 func (w *wrapperConn) Close() error {
-	return w.conn.Close()
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+
+	labels := []string{labelMethod, "Close"}
+	ts := time.Now()
+	err := w.conn.Close()
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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, "Close", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return err
 }
 
 // Begin implements driver.Conn Begin
 func (w *wrapperConn) Begin() (driver.Tx, error) {
-	tx, err := w.conn.Begin()
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+
+	labels := []string{labelMethod, "Begin"}
+	ts := time.Now()
+	tx, err := w.conn.Begin() // nolint:staticcheck
+	td := time.Since(ts)
+	te := td.Seconds()
 	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
 		return nil, err
 	}
-	return &wrapperTx{tx: tx, opts: w.opts}, nil
+	w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return &wrapperTx{tx: tx, opts: w.opts, ctx: ctx}, nil
 }
 
 // BeginTx implements driver.ConnBeginTx BeginTx
 func (w *wrapperConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
-	nctx, span := w.opts.Tracer.Start(ctx, "BeginTx")
+	nctx, span := w.opts.Tracer.Start(ctx, "Transaction")
-	if connBeginTx, ok := w.conn.(driver.ConnBeginTx); ok {
+	span.AddLabels("method", "BeginTx")
-		tx, err := connBeginTx.BeginTx(nctx, opts)
+	name := getQueryName(ctx)
-		if err != nil {
+	if name != "" {
-			return nil, err
+		span.AddLabels("query", name)
-		}
+	} else {
-		return &wrapperTx{tx: tx, opts: w.opts, span: span}, nil
+		name = labelUnknown
 	}
-	return w.conn.Begin()
+	labels := []string{labelMethod, "BeginTx", labelQuery, name}
+
+	connBeginTx, ok := w.conn.(driver.ConnBeginTx)
+	if !ok {
+		return w.Begin()
+	}
+
+	ts := time.Now()
+	tx, err := connBeginTx.BeginTx(nctx, opts)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
+		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
+			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "BeginTx", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
+		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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+	return &wrapperTx{tx: tx, opts: w.opts, ctx: ctx, span: span}, nil
+}
+
+// Prepare implements driver.Conn Prepare
+func (w *wrapperConn) Prepare(query string) (driver.Stmt, error) {
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+
+	labels := []string{labelMethod, "Prepare", labelQuery, labelUnknown}
+	ts := time.Now()
+	stmt, err := w.conn.Prepare(query)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
+		return nil, err
+	}
+	w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return wrapStmt(stmt, query, w.opts), nil
 }
 
 // PrepareContext implements driver.ConnPrepareContext PrepareContext
 func (w *wrapperConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
-	if connPrepareContext, ok := w.conn.(driver.ConnPrepareContext); ok {
+	var nctx context.Context
-		stmt, err := connPrepareContext.PrepareContext(ctx, query)
+	var span tracer.Span
-		if err != nil {
+	if w.ctx != nil {
-			return nil, err
+		nctx, span = w.opts.Tracer.Start(w.ctx, "PrepareContext")
-		}
+	} else {
-		return &wrapperStmt{stmt: stmt, opts: w.opts}, nil
+		nctx, span = w.opts.Tracer.Start(ctx, "PrepareContext")
 	}
-	return w.conn.Prepare(query)
+	span.AddLabels("method", "PrepareContext")
+	name := getQueryName(ctx)
+	if name != "" {
+		span.AddLabels("query", name)
+	} else {
+		name = labelUnknown
+	}
+
+	labels := []string{labelMethod, "PrepareContext", labelQuery, name}
+	conn, ok := w.conn.(driver.ConnPrepareContext)
+	if !ok {
+		return w.Prepare(query)
+	}
+
+	ts := time.Now()
+	stmt, err := conn.PrepareContext(nctx, query)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
+		w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
+			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "PrepareContext", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
+		return nil, err
+	}
+	w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return wrapStmt(stmt, query, w.opts), nil
 }
 
 // Exec implements driver.Execer Exec
 func (w *wrapperConn) Exec(query string, args []driver.Value) (driver.Result, error) {
-	if execer, ok := w.conn.(driver.Execer); ok {
+	var ctx context.Context
-		return execer.Exec(query, args)
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
 	}
-	return nil, ErrUnsupported
+	labels := []string{labelMethod, "Exec", labelQuery, labelUnknown}
+
+	// nolint:staticcheck
+	conn, ok := w.conn.(driver.Execer)
+	if !ok {
+		return nil, driver.ErrSkip
+	}
+
+	ts := time.Now()
+	res, err := conn.Exec(query, args)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+	return res, err
 }
 
 // Exec implements driver.StmtExecContext ExecContext
 func (w *wrapperConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
-	nctx, span := w.opts.Tracer.Start(ctx, "ExecContext")
+	var nctx context.Context
+	var span tracer.Span
+
+	if w.ctx != nil {
+		nctx, span = w.opts.Tracer.Start(w.ctx, "ExecContext")
+	} else {
+		nctx, span = w.opts.Tracer.Start(ctx, "ExecContext")
+	}
+	span.AddLabels("method", "ExecContext")
+	name := getQueryName(ctx)
+	if name != "" {
+		span.AddLabels("query", name)
+	} else {
+		name = labelUnknown
+	}
 	defer span.Finish()
-	if execerContext, ok := w.conn.(driver.ExecerContext); ok {
+	if len(args) > 0 {
-		r, err := execerContext.ExecContext(nctx, query, args)
+		span.AddLabels("args", fmt.Sprintf("%v", namedValueToLabels(args)))
-		return r, err
 	}
-	values, err := namedValueToValue(args)
+	labels := []string{labelMethod, "ExecContext", labelQuery, name}
+	fmt.Printf("EXECCONTETX args %#+v\n", args)
+
+	conn, ok := w.conn.(driver.ExecerContext)
+	if !ok {
+		// nolint:staticcheck
+		return nil, driver.ErrSkip
+	}
+
+	ts := time.Now()
+	res, err := conn.ExecContext(nctx, query, args)
+	td := time.Since(ts)
+	te := td.Seconds()
 	if err != nil {
-		return nil, err
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
 	}
-	return w.Exec(query, values)
+	w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return res, err
 }
 
 // Ping implements driver.Pinger Ping
 func (w *wrapperConn) Ping(ctx context.Context) error {
-	if pinger, ok := w.conn.(driver.Pinger); ok {
+	conn, ok := w.conn.(driver.Pinger)
-		nctx, span := w.opts.Tracer.Start(ctx, "Ping")
+
-		defer span.Finish()
+	if !ok {
-		return pinger.Ping(nctx)
+		// fallback path to check db alive
+		pc, err := w.d.Open(w.dname)
+		if err != nil {
+			return err
+		}
+		return pc.Close()
 	}
-	return ErrUnsupported
+
+	var nctx context.Context
+	var span tracer.Span
+	if w.ctx != nil {
+		nctx, span = w.opts.Tracer.Start(w.ctx, "Ping")
+	} else {
+		nctx, span = w.opts.Tracer.Start(ctx, "Ping")
+	}
+	defer span.Finish()
+	labels := []string{labelMethod, "Ping"}
+	ts := time.Now()
+	err := conn.Ping(nctx)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+		if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
+			w.opts.Logger.Fields(w.opts.LoggerObserver(ctx, "Ping", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
+		return err
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	w.opts.Meter.Summary(meterRequestLatencyMicroseconds, labels...).Update(te)
+	w.opts.Meter.Histogram(meterRequestDurationSeconds, labels...).Update(te)
+
+	return nil
 }
 
 // Query implements driver.Queryer Query
 func (w *wrapperConn) Query(query string, args []driver.Value) (driver.Rows, error) {
-	if queryer, ok := w.conn.(driver.Queryer); ok {
+	var ctx context.Context
-		return queryer.Query(query, args)
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
 	}
-	return nil, ErrUnsupported
+	// nolint:staticcheck
+	conn, ok := w.conn.(driver.Queryer)
+	if !ok {
+		return nil, driver.ErrSkip
+	}
+
+	labels := []string{labelMethod, "Query", labelQuery, labelUnknown}
+	ts := time.Now()
+	rows, err := conn.Query(query, args)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+	return rows, err
 }
 
 // QueryContext implements Driver.QueryerContext QueryContext
-func (w *wrapperConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
+func (w *wrapperConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
-	nctx, span := w.opts.Tracer.Start(ctx, "QueryContext")
+	var nctx context.Context
+	var span tracer.Span
+	if w.ctx != nil {
+		nctx, span = w.opts.Tracer.Start(w.ctx, "QueryContext")
+	} else {
+		nctx, span = w.opts.Tracer.Start(ctx, "QueryContext")
+	}
+	span.AddLabels("method", "QueryContext")
+	name := getQueryName(ctx)
+	if name != "" {
+		span.AddLabels("query", name)
+	} else {
+		name = labelUnknown
+	}
 	defer span.Finish()
-	if queryerContext, ok := w.conn.(driver.QueryerContext); ok {
+	if len(args) > 0 {
-		rows, err := queryerContext.QueryContext(nctx, query, args)
+		span.AddLabels("args", fmt.Sprintf("%v", namedValueToLabels(args)))
-		return rows, err
 	}
-	values, err := namedValueToValue(args)
+	labels := []string{labelMethod, "QueryContext", labelQuery, name}
+	conn, ok := w.conn.(driver.QueryerContext)
+	if !ok {
+		return nil, driver.ErrSkip
+	}
+
+	ts := time.Now()
+	rows, err := conn.QueryContext(nctx, query, args)
+	td := time.Since(ts)
+	te := td.Seconds()
 	if err != nil {
-		return nil, err
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
 	}
-	return w.Query(query, values)
+	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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return rows, err
+}
+
+// CheckNamedValue implements driver.NamedValueChecker
+func (w *wrapperConn) CheckNamedValue(v *driver.NamedValue) error {
+	s, ok := w.conn.(driver.NamedValueChecker)
+	if !ok {
+		return driver.ErrSkip
+	}
+	return s.CheckNamedValue(v)
+}
+
+// IsValid implements driver.Validator
+func (w *wrapperConn) IsValid() bool {
+	v, ok := w.conn.(driver.Validator)
+	if !ok {
+		return w.conn != nil
+	}
+	return v.IsValid()
+}
+
+func (w *wrapperConn) ResetSession(ctx context.Context) error {
+	s, ok := w.conn.(driver.SessionResetter)
+	if !ok {
+		return driver.ErrSkip
+	}
+	return s.ResetSession(ctx)
 }

driver.go

@@ -1,25 +1,88 @@
 package wrapper
 
 import (
+	"context"
 	"database/sql/driver"
+	"time"
 )
 
+var (
+// _ driver.DriverContext = (*wrapperDriver)(nil)
+// _ driver.Connector     = (*wrapperDriver)(nil)
+)
+
+type conn interface {
+	driver.Pinger
+	driver.Execer
+	driver.ExecerContext
+	driver.Queryer
+	driver.QueryerContext
+	driver.Conn
+	driver.ConnPrepareContext
+	driver.ConnBeginTx
+}
+
 // wrapperDriver defines a wrapper for driver.Driver
 type wrapperDriver struct {
+	driver    driver.Driver
+	connector driver.Connector
+	opts      Options
+	ctx       context.Context
+}
+
+type wrapperConnector struct {
 	driver driver.Driver
+	name   string
 	opts   Options
 }
 
 // NewWrapper creates and returns a new SQL driver with passed capabilities
 func NewWrapper(d driver.Driver, opts ...Option) driver.Driver {
-	return &wrapperDriver{driver: d, opts: NewOptions(opts...)}
+	return &wrapperDriver{driver: d, opts: NewOptions(opts...), ctx: context.Background()}
 }
 
+/*
+// Connect implements driver.Driver Connect
+func (w *wrapperConnector) Connect(ctx context.Context) (driver.Conn, error) {
+	return w.driver.Connect(ctx)
+}
+
+// Driver implements driver.Driver Driver
+func (w *wrapperConnector) Driver() driver.Driver {
+	return w.driver
+}
+*/
+
+/*
+// Connect implements driver.Driver OpenConnector
+func (w *wrapperDriver) OpenConnector(name string) (driver.Conn, error) {
+	return &wrapperConnector{driver: w.driver, name: name, opts: w.opts}, nil
+}
+*/
+
 // Open implements driver.Driver Open
 func (w *wrapperDriver) Open(name string) (driver.Conn, error) {
+	// ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second) // Ensure eventual timeout
+	// defer cancel()
+
+	/*
+		connector, err := w.OpenConnector(name)
+		if err != nil {
+			return nil, err
+		}
+		return connector.Connect(ctx)
+	*/
+
+	ts := time.Now()
 	c, err := w.driver.Open(name)
+	td := time.Since(ts)
+
+	if w.opts.LoggerEnabled {
+		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Open", labelUnknown, td, err)...).Log(w.ctx, w.opts.LoggerLevel)
+	}
 	if err != nil {
 		return nil, err
 	}
-	return &wrapperConn{conn: c, opts: w.opts}, nil
+
+	return wrapConn(c, w.opts), nil
 }

gen.go

@@ -0,0 +1,167 @@
+//go:build ignore
+
+package main
+
+import (
+	"bytes"
+	"crypto/md5"
+	"fmt"
+	"io"
+	"sort"
+	"strings"
+)
+
+var connIfaces = []string{
+	"driver.ConnBeginTx",
+	"driver.ConnPrepareContext",
+	"driver.Execer",
+	"driver.ExecerContext",
+	"driver.NamedValueChecker",
+	"driver.Pinger",
+	"driver.Queryer",
+	"driver.QueryerContext",
+	"driver.SessionResetter",
+	"driver.Validator",
+}
+
+var stmtIfaces = []string{
+	"driver.StmtExecContext",
+	"driver.StmtQueryContext",
+	"driver.ColumnConverter",
+	"driver.NamedValueChecker",
+}
+
+func getHash(s []string) string {
+	h := md5.New()
+	io.WriteString(h, strings.Join(s, "|"))
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
+
+func main() {
+	comboConn := all(connIfaces)
+
+	sort.Slice(comboConn, func(i, j int) bool {
+		return len(comboConn[i]) < len(comboConn[j])
+	})
+
+	comboStmt := all(stmtIfaces)
+
+	sort.Slice(comboStmt, func(i, j int) bool {
+		return len(comboStmt[i]) < len(comboStmt[j])
+	})
+
+	b := bytes.NewBuffer(nil)
+	b.WriteString("// Code generated. DO NOT EDIT.\n\n")
+	b.WriteString("package wrapper\n\n")
+	b.WriteString(`import "database/sql/driver"`)
+	b.WriteString("\n\n")
+
+	b.WriteString("func wrapConn(dc driver.Conn, opts Options) driver.Conn {\n")
+	b.WriteString("\tc := &wrapperConn{conn: dc, opts: opts}\n")
+
+	for idx := len(comboConn) - 1; idx >= 0; idx-- {
+		ifaces := comboConn[idx]
+		n := len(ifaces)
+		if n == 0 {
+			continue
+		}
+		h := getHash(ifaces)
+		b.WriteString(fmt.Sprintf("\tif v, ok := dc.(wrapConn%04d_%s); ok {\n", n, h))
+		b.WriteString("\treturn struct {\n")
+		b.WriteString("\t\tdriver.Conn\n")
+		b.WriteString(fmt.Sprintf("\t\t\t%s", strings.Join(ifaces, "\n\t\t\t")))
+		b.WriteString("\t\t\n}{")
+		for idx := range ifaces {
+			if idx > 0 {
+				b.WriteString(", ")
+				b.WriteString("v")
+			} else if idx == 0 {
+				b.WriteString("c")
+			} else {
+				b.WriteString("v")
+			}
+		}
+		b.WriteString(", v}\n")
+		b.WriteString("}\n\n")
+	}
+	b.WriteString("return c\n")
+	b.WriteString("}\n")
+
+	for idx := len(comboConn) - 1; idx >= 0; idx-- {
+		ifaces := comboConn[idx]
+		n := len(ifaces)
+		if n == 0 {
+			continue
+		}
+		h := getHash(ifaces)
+		b.WriteString(fmt.Sprintf("// %s\n", strings.Join(ifaces, "|")))
+		b.WriteString(fmt.Sprintf("type wrapConn%04d_%s interface {\n", n, h))
+		for _, iface := range ifaces {
+			b.WriteString(fmt.Sprintf("\t%s\n", iface))
+		}
+		b.WriteString("}\n\n")
+	}
+
+	b.WriteString("func wrapStmt(stmt driver.Stmt, query string, opts Options) driver.Stmt {\n")
+	b.WriteString("\tc := &wrapperStmt{stmt: stmt, query: query, opts: opts}\n")
+
+	for idx := len(comboStmt) - 1; idx >= 0; idx-- {
+		ifaces := comboStmt[idx]
+		n := len(ifaces)
+		if n == 0 {
+			continue
+		}
+		h := getHash(ifaces)
+		b.WriteString(fmt.Sprintf("\tif v, ok := stmt.(wrapStmt%04d_%s); ok {\n", n, h))
+		b.WriteString("\treturn struct {\n")
+		b.WriteString("\t\tdriver.Stmt\n")
+		b.WriteString(fmt.Sprintf("\t\t\t%s", strings.Join(ifaces, "\n\t\t\t")))
+		b.WriteString("\t\t\n}{")
+		for idx := range ifaces {
+			if idx > 0 {
+				b.WriteString(", ")
+				b.WriteString("v")
+			} else if idx == 0 {
+				b.WriteString("c")
+			} else {
+				b.WriteString("v")
+			}
+		}
+		b.WriteString(", v}\n")
+		b.WriteString("}\n\n")
+	}
+	b.WriteString("return c\n")
+	b.WriteString("}\n")
+
+	for idx := len(comboStmt) - 1; idx >= 0; idx-- {
+		ifaces := comboStmt[idx]
+		n := len(ifaces)
+		if n == 0 {
+			continue
+		}
+		h := getHash(ifaces)
+		b.WriteString(fmt.Sprintf("// %s\n", strings.Join(ifaces, "|")))
+		b.WriteString(fmt.Sprintf("type wrapStmt%04d_%s interface {\n", n, h))
+		for _, iface := range ifaces {
+			b.WriteString(fmt.Sprintf("\t%s\n", iface))
+		}
+		b.WriteString("}\n\n")
+	}
+
+	fmt.Printf("%s\n", b.String())
+}
+
+// all returns all combinations for a given string array.
+func all[T any](set []T) (subsets [][]T) {
+	length := uint(len(set))
+	for subsetBits := 1; subsetBits < (1 << length); subsetBits++ {
+		var subset []T
+		for object := uint(0); object < length; object++ {
+			if (subsetBits>>object)&1 == 1 {
+				subset = append(subset, set[object])
+			}
+		}
+		subsets = append(subsets, subset)
+	}
+	return subsets
+}

go.mod

@@ -1,5 +1,5 @@
 module go.unistack.org/micro-wrapper-sql/v3
 
-go 1.16
+go 1.19
 
-require go.unistack.org/micro/v3 v3.8.6
+require go.unistack.org/micro/v3 v3.10.25

go.sum

@@ -1,26 +1,2 @@
-github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
+go.unistack.org/micro/v3 v3.10.25 h1:A0epdZHOqjnXx103wwFhPKgmvVVbScvfbmn3HmHz1wE=
-github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+go.unistack.org/micro/v3 v3.10.25/go.mod h1:ALkeXpqChYDjx8KPi7tz9mmIyOnob6nlNswsg8BnZjQ=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-go.unistack.org/micro-proto/v3 v3.1.0 h1:q39FwjFiRZn+Ux/tt+d3bJTmDtsQQWa+3SLYVo1vLfA=
-go.unistack.org/micro-proto/v3 v3.1.0/go.mod h1:DpRhYCBXlmSJ/AAXTmntvlh7kQkYU6eFvlmYAx4BQS8=
-go.unistack.org/micro/v3 v3.8.6 h1:nU6dpNRF7iF8dtcTTfzdPan8RkhiDuTsfMrXBmpzG/g=
-go.unistack.org/micro/v3 v3.8.6/go.mod h1:KMMmOmbgo/D52/rCAbqeKbBsgEEbSKM69he54J3ZIuA=
-golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

options.go

@@ -2,6 +2,7 @@ package wrapper
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"go.unistack.org/micro/v3/logger"
@@ -14,8 +15,17 @@ var (
 	DefaultMeterStatsInterval = 5 * time.Second
 	// DefaultMeterMetricPrefix holds default metric prefix
 	DefaultMeterMetricPrefix = "micro_sql_"
-	// DefaultMeterLabelPrefix holds default label prefix
+	// DefaultLoggerObserver used to prepare labels for logger
-	DefaultMeterLabelPrefix = "micro_"
+	DefaultLoggerObserver = func(ctx context.Context, method string, query string, td time.Duration, err error) []interface{} {
+		labels := []interface{}{"method", method, "took", fmt.Sprintf("%v", td)}
+		if err != nil {
+			labels = append(labels, "error", err.Error())
+		}
+		if query != labelUnknown {
+			labels = append(labels, "query", query)
+		}
+		return labels
+	}
 )
 
 var (
@@ -25,13 +35,18 @@ var (
 	IdleConnections    = "idle_connections"
 	WaitConnections    = "wait_connections"
 	BlockedSeconds     = "blocked_seconds"
-	MaxIdleClosed      = "max_idletime_closed"
+	MaxIdleClosed      = "max_idle_closed"
+	MaxIdletimeClosed  = "max_idletime_closed"
 	MaxLifetimeClosed  = "max_lifetime_closed"
 
-	//	RequestTotal          = "request_total"
+	meterRequestTotal               = "request_total"
-	//	RequestLatencyMicroseconds = "request_latency_microseconds"
+	meterRequestLatencyMicroseconds = "request_latency_microseconds"
-	//	RequestDurationSeconds    = "request_duration_seconds"
+	meterRequestDurationSeconds     = "request_duration_seconds"
 
+	labelUnknown  = "unknown"
+	labelQuery    = "query"
+	labelMethod   = "method"
+	labelStatus   = "status"
 	labelSuccess  = "success"
 	labelFailure  = "failure"
 	labelHost     = "db_host"
@@ -45,13 +60,11 @@ type Options struct {
 	Tracer             tracer.Tracer
 	DatabaseHost       string
 	DatabaseName       string
-	ServiceName        string
-	ServiceVersion     string
-	ServiceID          string
-	MeterLabelPrefix   string
 	MeterMetricPrefix  string
 	MeterStatsInterval time.Duration
 	LoggerLevel        logger.Level
+	LoggerEnabled      bool
+	LoggerObserver     func(ctx context.Context, method string, name string, td time.Duration, err error) []interface{}
 }
 
 // Option func signature
@@ -65,12 +78,23 @@ func NewOptions(opts ...Option) Options {
 		Tracer:             tracer.DefaultTracer,
 		MeterStatsInterval: DefaultMeterStatsInterval,
 		MeterMetricPrefix:  DefaultMeterMetricPrefix,
-		MeterLabelPrefix:   DefaultMeterLabelPrefix,
+		LoggerLevel:        logger.DebugLevel,
-		LoggerLevel:        logger.ErrorLevel,
+		LoggerObserver:     DefaultLoggerObserver,
 	}
 	for _, o := range opts {
 		o(&options)
 	}
+
+	options.Meter = options.Meter.Clone(
+		meter.MetricPrefix(options.MeterMetricPrefix),
+		meter.Labels(
+			labelHost, options.DatabaseHost,
+			labelDatabase, options.DatabaseName,
+		),
+	)
+
+	options.Logger = options.Logger.Clone(logger.WithCallerSkipCount(1))
+
 	return options
 }
 
@@ -81,13 +105,6 @@ func MetricInterval(td time.Duration) Option {
 	}
 }
 
-// LabelPrefix specifies prefix for each label
-func LabelPrefix(pref string) Option {
-	return func(o *Options) {
-		o.MeterLabelPrefix = pref
-	}
-}
-
 // MetricPrefix specifies prefix for each metric
 func MetricPrefix(pref string) Option {
 	return func(o *Options) {
@@ -121,6 +138,27 @@ func Logger(l logger.Logger) Option {
 	}
 }
 
+// LoggerEnabled enable sql logging
+func LoggerEnabled(b bool) Option {
+	return func(o *Options) {
+		o.LoggerEnabled = b
+	}
+}
+
+// LoggerLevel passes logger.Level option
+func LoggerLevel(lvl logger.Level) Option {
+	return func(o *Options) {
+		o.LoggerLevel = lvl
+	}
+}
+
+// LoggerObserver passes observer to fill logger fields
+func LoggerObserver(obs func(context.Context, string, string, time.Duration, error) []interface{}) Option {
+	return func(o *Options) {
+		o.LoggerObserver = obs
+	}
+}
+
 // Tracer passes tracer.Tracer to wrapper
 func Tracer(t tracer.Tracer) Option {
 	return func(o *Options) {
@@ -137,3 +175,10 @@ func QueryName(ctx context.Context, name string) context.Context {
 	}
 	return context.WithValue(ctx, queryNameKey{}, name)
 }
+
+func getQueryName(ctx context.Context) string {
+	if v, ok := ctx.Value(queryNameKey{}).(string); ok {
+		return v
+	}
+	return ""
+}

stats.go

@@ -0,0 +1,41 @@
+package wrapper // import "go.unistack.org/micro-wrapper-sql/v3"
+
+import (
+	"context"
+	"database/sql"
+	"time"
+)
+
+type Statser interface {
+	Stats() sql.DBStats
+}
+
+func NewStatsMeter(ctx context.Context, db Statser, opts ...Option) {
+	options := NewOptions(opts...)
+
+	go func() {
+		ticker := time.NewTicker(options.MeterStatsInterval)
+		defer ticker.Stop()
+
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				if db == nil {
+					return
+				}
+				stats := db.Stats()
+				options.Meter.Counter(MaxOpenConnections).Set(uint64(stats.MaxOpenConnections))
+				options.Meter.Counter(OpenConnections).Set(uint64(stats.OpenConnections))
+				options.Meter.Counter(InuseConnections).Set(uint64(stats.InUse))
+				options.Meter.Counter(IdleConnections).Set(uint64(stats.Idle))
+				options.Meter.Counter(WaitConnections).Set(uint64(stats.WaitCount))
+				options.Meter.FloatCounter(BlockedSeconds).Set(stats.WaitDuration.Seconds())
+				options.Meter.Counter(MaxIdleClosed).Set(uint64(stats.MaxIdleClosed))
+				options.Meter.Counter(MaxIdletimeClosed).Set(uint64(stats.MaxIdleTimeClosed))
+				options.Meter.Counter(MaxLifetimeClosed).Set(uint64(stats.MaxLifetimeClosed))
+			}
+		}
+	}()
+}

stmt.go

@@ -3,17 +3,52 @@ package wrapper
 import (
 	"context"
 	"database/sql/driver"
+	"fmt"
+	"time"
+
+	"go.unistack.org/micro/v3/tracer"
+)
+
+var (
+	_ driver.Stmt              = (*wrapperStmt)(nil)
+	_ driver.StmtQueryContext  = (*wrapperStmt)(nil)
+	_ driver.StmtExecContext   = (*wrapperStmt)(nil)
+	_ driver.NamedValueChecker = (*wrapperStmt)(nil)
 )
 
 // wrapperStmt defines a wrapper for driver.Stmt
 type wrapperStmt struct {
-	stmt driver.Stmt
+	stmt  driver.Stmt
-	opts Options
+	opts  Options
+	query string
+	ctx   context.Context
 }
 
 // Close implements driver.Stmt Close
 func (w *wrapperStmt) Close() error {
-	return w.stmt.Close()
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+	labels := []string{labelMethod, "Close"}
+	ts := time.Now()
+	err := w.stmt.Close()
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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, "Close", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+	return err
 }
 
 // NumInput implements driver.Stmt NumInput
@@ -21,41 +56,221 @@ func (w *wrapperStmt) NumInput() int {
 	return w.stmt.NumInput()
 }
 
+// CheckNamedValue implements driver.NamedValueChecker
+func (w *wrapperStmt) CheckNamedValue(v *driver.NamedValue) error {
+	s, ok := w.stmt.(driver.NamedValueChecker)
+	if !ok {
+		return driver.ErrSkip
+	}
+	return s.CheckNamedValue(v)
+}
+
 // Exec implements driver.Stmt Exec
 func (w *wrapperStmt) Exec(args []driver.Value) (driver.Result, error) {
-	return w.stmt.Exec(args)
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+	labels := []string{labelMethod, "Exec"}
+	ts := time.Now()
+	res, err := w.stmt.Exec(args) // nolint:staticcheck
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return res, err
 }
 
 // Query implements driver.Stmt Query
 func (w *wrapperStmt) Query(args []driver.Value) (driver.Rows, error) {
-	return w.stmt.Query(args)
+	var ctx context.Context
+	if w.ctx != nil {
+		ctx = w.ctx
+	} else {
+		ctx = context.Background()
+	}
+	labels := []string{labelMethod, "Query"}
+	ts := time.Now()
+	// nolint:staticcheck
+	rows, err := w.stmt.Query(args)
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+	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", labelUnknown, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return rows, err
 }
 
-// ExecContext implements driver.ExecerContext ExecContext
+// ExecContext implements driver.StmtExecContext ExecContext
-func (w *wrapperStmt) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+func (w *wrapperStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
-	nctx, span := w.opts.Tracer.Start(ctx, "ExecContext")
+	var nctx context.Context
-	defer span.Finish()
+	var span tracer.Span
-	if execerContext, ok := w.stmt.(driver.ExecerContext); ok {
+	if w.ctx != nil {
-		return execerContext.ExecContext(nctx, query, args)
+		nctx, span = w.opts.Tracer.Start(w.ctx, "ExecContext")
+	} else {
+		nctx, span = w.opts.Tracer.Start(ctx, "ExecContext")
 	}
+	span.AddLabels("method", "ExecContext")
+	name := getQueryName(ctx)
+	if name != "" {
+		span.AddLabels("query", name)
+	} else {
+		name = labelUnknown
+	}
+	defer span.Finish()
+	if len(args) > 0 {
+		span.AddLabels("args", fmt.Sprintf("%v", namedValueToLabels(args)))
+	}
+	labels := []string{labelMethod, "ExecContext", labelQuery, name}
+
+	if conn, ok := w.stmt.(driver.StmtExecContext); ok {
+		ts := time.Now()
+		res, err := conn.ExecContext(nctx, args)
+		td := time.Since(ts)
+		te := td.Seconds()
+		if err != nil {
+			w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+			span.AddLabels("error", true)
+			span.AddLabels("err", err.Error())
+		} else {
+			w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+		}
+		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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
+		return res, err
+	}
+
 	values, err := namedValueToValue(args)
 	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", 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)
+		}
 		return nil, err
 	}
-	return w.Exec(values)
+	ts := time.Now()
+	res, err := w.Exec(values) // nolint:staticcheck
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+
+	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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return res, err
 }
 
-// QueryContext implements Driver.QueryerContext QueryContext
+// QueryContext implements driver.StmtQueryContext StmtQueryContext
-func (w *wrapperStmt) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
+func (w *wrapperStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
-	nctx, span := w.opts.Tracer.Start(ctx, "QueryContext")
+	var nctx context.Context
+	var span tracer.Span
+	if w.ctx != nil {
+		nctx, span = w.opts.Tracer.Start(w.ctx, "QueryContext")
+	} else {
+		nctx, span = w.opts.Tracer.Start(ctx, "QueryContext")
+	}
+	span.AddLabels("method", "QueryContext")
+	name := getQueryName(ctx)
+	if name != "" {
+		span.AddLabels("query", name)
+	} else {
+		name = labelUnknown
+	}
 	defer span.Finish()
-	if queryerContext, ok := w.stmt.(driver.QueryerContext); ok {
+	if len(args) > 0 {
-		rows, err := queryerContext.QueryContext(nctx, query, args)
+		span.AddLabels("args", fmt.Sprintf("%v", namedValueToLabels(args)))
+	}
+	labels := []string{labelMethod, "QueryContext", labelQuery, name}
+	if conn, ok := w.stmt.(driver.StmtQueryContext); ok {
+		ts := time.Now()
+		rows, err := conn.QueryContext(nctx, args)
+		td := time.Since(ts)
+		te := td.Seconds()
+		if err != nil {
+			w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+			span.AddLabels("error", true)
+			span.AddLabels("err", err.Error())
+		} else {
+			w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+		}
+
+		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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+		}
 		return rows, err
 	}
+
 	values, err := namedValueToValue(args)
 	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+
+		span.AddLabels("error", true)
+		span.AddLabels("err", 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)
+		}
 		return nil, err
 	}
-	return w.Query(values)
+	ts := time.Now()
+	rows, err := w.Query(values) // nolint:staticcheck
+	td := time.Since(ts)
+	te := td.Seconds()
+	if err != nil {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelFailure)...).Inc()
+		span.AddLabels("error", true)
+		span.AddLabels("err", err.Error())
+	} else {
+		w.opts.Meter.Counter(meterRequestTotal, append(labels, labelStatus, labelSuccess)...).Inc()
+	}
+
+	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", name, td, err)...).Log(ctx, w.opts.LoggerLevel)
+	}
+
+	return rows, err
 }

tx.go

@@ -1,30 +1,65 @@
 package wrapper
 
 import (
+	"context"
 	"database/sql/driver"
+	"time"
 
 	"go.unistack.org/micro/v3/tracer"
 )
 
+var _ driver.Tx = (*wrapperTx)(nil)
+
 // wrapperTx defines a wrapper for driver.Tx
 type wrapperTx struct {
 	tx   driver.Tx
 	span tracer.Span
 	opts Options
+	ctx  context.Context
 }
 
 // Commit implements driver.Tx Commit
 func (w *wrapperTx) Commit() error {
+	ts := time.Now()
+	err := w.tx.Commit()
+	td := time.Since(ts)
+
 	if w.span != nil {
-		defer w.span.Finish()
+		if err != nil {
+			w.span.AddLabels("error", true)
+			w.span.AddLabels("err", err.Error())
+		}
+		w.span.Finish()
 	}
-	return w.tx.Commit()
+
+	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
+		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Commit", labelUnknown, td, err)...).Log(w.ctx, w.opts.LoggerLevel)
+	}
+
+	w.ctx = nil
+
+	return err
 }
 
 // Rollback implements driver.Tx Rollback
 func (w *wrapperTx) Rollback() error {
+	ts := time.Now()
+	err := w.tx.Rollback()
+	td := time.Since(ts)
+
 	if w.span != nil {
-		defer w.span.Finish()
+		if err != nil {
+			w.span.AddLabels("error", true)
+			w.span.AddLabels("err", err.Error())
+		}
+		w.span.Finish()
 	}
-	return w.tx.Rollback()
+
+	if w.opts.LoggerEnabled && w.opts.Logger.V(w.opts.LoggerLevel) {
+		w.opts.Logger.Fields(w.opts.LoggerObserver(w.ctx, "Rollback", labelUnknown, td, err)...).Log(w.ctx, w.opts.LoggerLevel)
+	}
+
+	w.ctx = nil
+
+	return err
 }

wrap.go

@@ -0,0 +1,17 @@
+package wrapper
+
+import (
+	"database/sql/driver"
+)
+
+func wrapDriver(d driver.Driver, opts Options) driver.Driver {
+	if _, ok := d.(driver.DriverContext); ok {
+		return &wrapperDriver{driver: d, opts: opts}
+	}
+	return struct{ driver.Driver }{&wrapperDriver{driver: d, opts: opts}}
+}
+
+// WrapConn allows an existing driver.Conn to be wrapped.
+func WrapConn(c driver.Conn, opts ...Option) driver.Conn {
+	return wrapConn(c, NewOptions(opts...))
+}

wrapper.go

@@ -1,51 +0,0 @@
-package wrapper // import "go.unistack.org/micro-wrapper-sql/v3"
-
-import (
-	"context"
-	"database/sql"
-	"time"
-
-	"go.unistack.org/micro/v3/meter"
-)
-
-type Statser interface {
-	Stats() sql.DBStats
-}
-
-func NewStatsMeter(ctx context.Context, db Statser, opts ...Option) {
-	options := NewOptions(opts...)
-
-	m := options.Meter.Clone(
-		meter.LabelPrefix(options.MeterLabelPrefix),
-		meter.MetricPrefix(options.MeterMetricPrefix),
-		meter.Labels(
-			labelHost, options.DatabaseHost,
-			labelDatabase, options.DatabaseName,
-		),
-	)
-
-	go func() {
-		ticker := time.NewTicker(options.MeterStatsInterval)
-		defer ticker.Stop()
-
-		for {
-			select {
-			case <-ctx.Done():
-				return
-			case <-ticker.C:
-				if db == nil {
-					return
-				}
-				stats := db.Stats()
-				m.Counter(MaxOpenConnections).Set(uint64(stats.MaxOpenConnections))
-				m.Counter(OpenConnections).Set(uint64(stats.OpenConnections))
-				m.Counter(InuseConnections).Set(uint64(stats.InUse))
-				m.Counter(IdleConnections).Set(uint64(stats.Idle))
-				m.Counter(WaitConnections).Set(uint64(stats.WaitCount))
-				m.FloatCounter(BlockedSeconds).Set(stats.WaitDuration.Seconds())
-				m.Counter(MaxIdleClosed).Set(uint64(stats.MaxIdleClosed))
-				m.Counter(MaxLifetimeClosed).Set(uint64(stats.MaxLifetimeClosed))
-			}
-		}
-	}()
-}