update workflows

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

.github/workflows/codeql-analysis.yml

@@ -9,7 +9,7 @@
 # the `language` matrix defined below to confirm you have the correct set of
 # supported CodeQL languages.
 #
-name: "CodeQL"
+name: "codeql"
 
 on:
   workflow_run:
@@ -17,16 +17,16 @@ on:
     types:
       - completed
   push:
-    branches: [ master ]
+    branches: [ master, v3 ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master ]
+    branches: [ master, v3 ]
   schedule:
     - cron: '34 1 * * 0'
 
 jobs:
   analyze:
-    name: Analyze
+    name: analyze
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -42,11 +42,14 @@ jobs:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
-    - name: Checkout repository
+    - name: checkout
       uses: actions/checkout@v2
-
+    - name: setup
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16
     # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
+    - name: init
       uses: github/codeql-action/init@v1
       with:
         languages: ${{ matrix.language }}
@@ -57,7 +60,7 @@ 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
+    - name: autobuild
       uses: github/codeql-action/autobuild@v1
 
     # ℹ️ Command-line programs to run using the OS shell.
@@ -71,5 +74,5 @@ jobs:
     #   make bootstrap
     #   make release
 
-    - name: Perform CodeQL Analysis
+    - name: analyze
       uses: github/codeql-action/analyze@v1

.github/workflows/dependabot-automerge.yml

@@ -1,66 +1,31 @@
 name: "prautomerge"
 
 on:
-  workflow_run:
+  pull_request_target:
-    workflows: ["prbuild"]
+    types: [assigned, opened, synchronize, reopened]
-    types:
-      - completed
 
 permissions:
-  contents: write
   pull-requests: write
+  contents: write
 
 jobs:
-  Dependabot-Automerge:
+  dependabot:
     runs-on: ubuntu-latest
-    # Contains workaround to execute if dependabot updates the PR by checking for the base branch in the linked PR
+    if: ${{ github.actor == 'dependabot[bot]' }}
-    # The the github.event.workflow_run.event value is 'push' and not 'pull_request'
-    # dont work with multiple workflows when last returns success
-    if: >-
-      github.event.workflow_run.conclusion == 'success'
-      && github.actor == 'dependabot[bot]'
-      && github.event.sender.login == 'dependabot[bot]'
-      && github.event.sender.type == 'Bot'
-      && (github.event.workflow_run.event == 'pull_request'
-          || (github.event.workflow_run.event == 'push' && github.event.workflow_run.pull_requests[0].base.ref == github.event.repository.default_branch ))
     steps:
-      - name: Approve Changes and Merge changes if label 'dependencies' is set
+      - name: metadata
-        uses: actions/github-script@v5
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.1.1
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
+          github-token: "${{ secrets.TOKEN }}"
-          script: |
+      - name: approve
-            console.log(context.payload.workflow_run);
+        run: gh pr review --approve "$PR_URL"
-            
+        env:
-            var labelNames = await github.paginate(
+          PR_URL: ${{github.event.pull_request.html_url}}
-              github.issues.listLabelsOnIssue,
+          GITHUB_TOKEN: ${{secrets.TOKEN}}
-              {
+      - name: merge
-                repo: context.repo.repo,
+        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
-                owner: context.repo.owner,
+        run: gh pr merge --auto --merge "$PR_URL"
-                issue_number: context.payload.workflow_run.pull_requests[0].number,
+        env:
-              },
+          PR_URL: ${{github.event.pull_request.html_url}}
-              (response) => response.data.map(
+          GITHUB_TOKEN: ${{secrets.TOKEN}}
-                (label) => label.name
-              )
-            );
-
-            console.log(labelNames);
-
-            if (labelNames.includes('dependencies')) {
-              console.log('Found label');
-
-              await github.pulls.createReview({
-                repo: context.repo.repo,
-                owner: context.repo.owner,
-                pull_number: context.payload.workflow_run.pull_requests[0].number,
-                event: 'APPROVE'
-              });
-              console.log('Approved PR');
-
-              await github.pulls.merge({
-                repo: context.repo.repo,
-                owner: context.repo.owner,
-                pull_number: context.payload.workflow_run.pull_requests[0].number,
-              });
-
-              console.log('Merged PR');
-            }

README.md

@@ -15,7 +15,7 @@ import (
 
 func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
 	// format connection string
-	dbstr := fmt.Sprintf(
+	cstr := fmt.Sprintf(
 		"postgres://%s:%s@%s/%s?sslmode=disable&statement_cache_mode=describe",
 		cfg.Login,
 		url.QueryEscape(cfg.Passw),
@@ -24,7 +24,7 @@ func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
 	)
 
 	// parse connection string
-	dbConf, err := pgx.ParseConfig(dbstr)
+	dbConf, err := pgx.ParseConfig(cstr)
 	if err != nil {
 		return nil, err
 	}
@@ -37,16 +37,24 @@ func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
 	// may be needed for pbbouncer, needs to check
 	//dbConf.PreferSimpleProtocol = true
 	// register pgx conn
-	connStr := stdlib.RegisterConnConfig(dbConf)
+	dsn := stdlib.RegisterConnConfig(dbConf)
 
-	db, err := sqlx.Connect("pgx", connStr)
+
+  sql.Register("micro-wrapper-sql", wrapper.WrapDriver(
+    &stdlib.Driver{}, 
+    wrapper.Tracer(some.NewTracer()),
+  ))
+  wdb, err := sql.Open("micro-wrapper-sql", dsn)
 	if err != nil {
 		return nil, err
 	}
+
+	db := sqlx.NewDb(wdb, "pgx")
 	db.SetMaxOpenConns(int(cfg.ConnMax))
-	db.SetMaxIdleConns(int(cfg.ConnMax / 2))
+	db.SetMaxIdleConns(int(cfg.ConnMaxIdle))
 	db.SetConnMaxLifetime(time.Duration(cfg.ConnLifetime) * time.Second)
 	db.SetConnMaxIdleTime(time.Duration(cfg.ConnMaxIdleTime) * time.Second)
+	
 	return db, nil
 }
 ```

common.go

@@ -0,0 +1,36 @@
+package wrapper
+
+import (
+	"database/sql/driver"
+	"errors"
+)
+
+// ErrUnsupported is an error returned when the underlying driver doesn't provide a given function.
+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.
+func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) {
+	dargs := make([]driver.Value, len(named))
+	for n, param := range named {
+		if len(param.Name) > 0 {
+			return nil, errors.New("sql: driver does not support the use of Named Parameters")
+		}
+		dargs[n] = param.Value
+	}
+	return dargs, nil
+}

conn.go

@@ -0,0 +1,116 @@
+package wrapper
+
+import (
+	"context"
+	"database/sql/driver"
+)
+
+// wrapperConn defines a wrapper for driver.Conn
+type wrapperConn struct {
+	conn driver.Conn
+	opts Options
+}
+
+// Prepare implements driver.Conn Prepare
+func (w *wrapperConn) Prepare(query string) (driver.Stmt, error) {
+	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()
+}
+
+// Begin implements driver.Conn Begin
+func (w *wrapperConn) Begin() (driver.Tx, error) {
+	tx, err := w.conn.Begin()
+	if err != nil {
+		return nil, err
+	}
+	return &wrapperTx{tx: tx, opts: w.opts}, 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")
+	if connBeginTx, ok := w.conn.(driver.ConnBeginTx); ok {
+		tx, err := connBeginTx.BeginTx(nctx, opts)
+		if err != nil {
+			return nil, err
+		}
+		return &wrapperTx{tx: tx, opts: w.opts, span: span}, nil
+	}
+	return w.conn.Begin()
+}
+
+// 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 {
+		stmt, err := connPrepareContext.PrepareContext(ctx, query)
+		if err != nil {
+			return nil, err
+		}
+		return &wrapperStmt{stmt: stmt, opts: w.opts}, nil
+	}
+	return w.conn.Prepare(query)
+}
+
+// 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 {
+		return execer.Exec(query, args)
+	}
+	return nil, ErrUnsupported
+}
+
+// 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")
+	defer span.Finish()
+	if execerContext, ok := w.conn.(driver.ExecerContext); ok {
+		r, err := execerContext.ExecContext(nctx, query, args)
+		return r, err
+	}
+	values, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+	return w.Exec(query, values)
+}
+
+// Ping implements driver.Pinger Ping
+func (w *wrapperConn) Ping(ctx context.Context) error {
+	if pinger, ok := w.conn.(driver.Pinger); ok {
+		nctx, span := w.opts.Tracer.Start(ctx, "Ping")
+		defer span.Finish()
+		return pinger.Ping(nctx)
+	}
+	return ErrUnsupported
+}
+
+// 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 {
+		return queryer.Query(query, args)
+	}
+	return nil, ErrUnsupported
+}
+
+// QueryContext implements Driver.QueryerContext QueryContext
+func (w *wrapperConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
+	nctx, span := w.opts.Tracer.Start(ctx, "QueryContext")
+	defer span.Finish()
+	if queryerContext, ok := w.conn.(driver.QueryerContext); ok {
+		rows, err := queryerContext.QueryContext(nctx, query, args)
+		return rows, err
+	}
+	values, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+	return w.Query(query, values)
+}

doc.go

@@ -0,0 +1,2 @@
+// package wrapper provides SQL driver wrapper with micro tracing, logging, metering capabilities
+package wrapper

driver.go

@@ -0,0 +1,25 @@
+package wrapper
+
+import (
+	"database/sql/driver"
+)
+
+// wrapperDriver defines a wrapper for driver.Driver
+type wrapperDriver struct {
+	driver driver.Driver
+	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...)}
+}
+
+// Open implements driver.Driver Open
+func (w *wrapperDriver) Open(name string) (driver.Conn, error) {
+	c, err := w.driver.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	return &wrapperConn{conn: c, opts: w.opts}, nil
+}

go.mod

@@ -1,5 +1,5 @@
-module github.com/unistack-org/micro-wrapper-sql/v3
+module go.unistack.org/micro-wrapper-sql/v3
 
 go 1.16
 
-require github.com/unistack-org/micro/v3 v3.2.22
+require go.unistack.org/micro/v3 v3.8.5

go.sum

@@ -1,18 +1,26 @@
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
-github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
+github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
-github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
+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 h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-github.com/unistack-org/micro/v3 v3.2.22 h1:AXyLtRpfcPGczhaA1f9KR0ctK+1Zpqvb+rBJrZtp3Oo=
+github.com/unistack-org/micro-proto v0.0.9 h1:KrWLS4FUX7UAWNAilQf70uad6ZPf/0EudeddCXllRVc=
-github.com/unistack-org/micro/v3 v3.2.22/go.mod h1:oI8H/uGq1h4i5cvUycEoFKJQC7G8yChZQNIDNWGSLRU=
+github.com/unistack-org/micro-proto v0.0.9/go.mod h1:Cckwmzd89gvS7ThxzZp9kQR/EOdksFQcsTAtDDyKwrg=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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+go.unistack.org/micro/v3 v3.8.2/go.mod h1:Tkteri0wiiybbH6aPqay26pZHFIAwL9LXJc2x1Jkakk=
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 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 v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+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=
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+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
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 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

@@ -0,0 +1,139 @@
+package wrapper
+
+import (
+	"context"
+	"time"
+
+	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v3/meter"
+	"go.unistack.org/micro/v3/tracer"
+)
+
+var (
+	// DefaultMeterStatsInterval holds default stats interval
+	DefaultMeterStatsInterval = 5 * time.Second
+	// DefaultMeterMetricPrefix holds default metric prefix
+	DefaultMeterMetricPrefix = "micro_sql_"
+	// DefaultMeterLabelPrefix holds default label prefix
+	DefaultMeterLabelPrefix = "micro_"
+)
+
+var (
+	MaxOpenConnections = "max_open_connections"
+	OpenConnections    = "open_connections"
+	InuseConnections   = "inuse_connections"
+	IdleConnections    = "idle_connections"
+	WaitConnections    = "wait_connections"
+	BlockedSeconds     = "blocked_seconds"
+	MaxIdleClosed      = "max_idletime_closed"
+	MaxLifetimeClosed  = "max_lifetime_closed"
+
+	//	RequestTotal          = "request_total"
+	//	RequestLatencyMicroseconds = "request_latency_microseconds"
+	//	RequestDurationSeconds    = "request_duration_seconds"
+
+	labelSuccess  = "success"
+	labelFailure  = "failure"
+	labelHost     = "db_host"
+	labelDatabase = "db_name"
+)
+
+// Options struct holds wrapper options
+type Options struct {
+	Logger             logger.Logger
+	Meter              meter.Meter
+	Tracer             tracer.Tracer
+	DatabaseHost       string
+	DatabaseName       string
+	ServiceName        string
+	ServiceVersion     string
+	ServiceID          string
+	MeterLabelPrefix   string
+	MeterMetricPrefix  string
+	MeterStatsInterval time.Duration
+	LoggerLevel        logger.Level
+}
+
+// Option func signature
+type Option func(*Options)
+
+// NewOptions create new Options struct from provided option slice
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Logger:             logger.DefaultLogger,
+		Meter:              meter.DefaultMeter,
+		Tracer:             tracer.DefaultTracer,
+		MeterStatsInterval: DefaultMeterStatsInterval,
+		MeterMetricPrefix:  DefaultMeterMetricPrefix,
+		MeterLabelPrefix:   DefaultMeterLabelPrefix,
+		LoggerLevel:        logger.ErrorLevel,
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
+// MetricInterval specifies stats interval for *sql.DB
+func MetricInterval(td time.Duration) Option {
+	return func(o *Options) {
+		o.MeterStatsInterval = td
+	}
+}
+
+// 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) {
+		o.MeterMetricPrefix = pref
+	}
+}
+
+func DatabaseHost(host string) Option {
+	return func(o *Options) {
+		o.DatabaseHost = host
+	}
+}
+
+func DatabaseName(name string) Option {
+	return func(o *Options) {
+		o.DatabaseName = name
+	}
+}
+
+// Meter passes meter.Meter to wrapper
+func Meter(m meter.Meter) Option {
+	return func(o *Options) {
+		o.Meter = m
+	}
+}
+
+// Logger passes logger.Logger to wrapper
+func Logger(l logger.Logger) Option {
+	return func(o *Options) {
+		o.Logger = l
+	}
+}
+
+// Tracer passes tracer.Tracer to wrapper
+func Tracer(t tracer.Tracer) Option {
+	return func(o *Options) {
+		o.Tracer = t
+	}
+}
+
+type queryNameKey struct{}
+
+// QueryName passes query name to wrapper func
+func QueryName(ctx context.Context, name string) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	return context.WithValue(ctx, queryNameKey{}, name)
+}

stmt.go

@@ -0,0 +1,61 @@
+package wrapper
+
+import (
+	"context"
+	"database/sql/driver"
+)
+
+// wrapperStmt defines a wrapper for driver.Stmt
+type wrapperStmt struct {
+	stmt driver.Stmt
+	opts Options
+}
+
+// Close implements driver.Stmt Close
+func (w *wrapperStmt) Close() error {
+	return w.stmt.Close()
+}
+
+// NumInput implements driver.Stmt NumInput
+func (w *wrapperStmt) NumInput() int {
+	return w.stmt.NumInput()
+}
+
+// Exec implements driver.Stmt Exec
+func (w *wrapperStmt) Exec(args []driver.Value) (driver.Result, error) {
+	return w.stmt.Exec(args)
+}
+
+// Query implements driver.Stmt Query
+func (w *wrapperStmt) Query(args []driver.Value) (driver.Rows, error) {
+	return w.stmt.Query(args)
+}
+
+// ExecContext implements driver.ExecerContext ExecContext
+func (w *wrapperStmt) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+	nctx, span := w.opts.Tracer.Start(ctx, "ExecContext")
+	defer span.Finish()
+	if execerContext, ok := w.stmt.(driver.ExecerContext); ok {
+		return execerContext.ExecContext(nctx, query, args)
+	}
+	values, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+	return w.Exec(values)
+}
+
+// QueryContext implements Driver.QueryerContext QueryContext
+func (w *wrapperStmt) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
+	nctx, span := w.opts.Tracer.Start(ctx, "QueryContext")
+	defer span.Finish()
+	if queryerContext, ok := w.stmt.(driver.QueryerContext); ok {
+		rows, err := queryerContext.QueryContext(nctx, query, args)
+		return rows, err
+	}
+	values, err := namedValueToValue(args)
+	if err != nil {
+		return nil, err
+	}
+	return w.Query(values)
+}

tx.go

@@ -0,0 +1,30 @@
+package wrapper
+
+import (
+	"database/sql/driver"
+
+	"go.unistack.org/micro/v3/tracer"
+)
+
+// wrapperTx defines a wrapper for driver.Tx
+type wrapperTx struct {
+	tx   driver.Tx
+	span tracer.Span
+	opts Options
+}
+
+// Commit implements driver.Tx Commit
+func (w *wrapperTx) Commit() error {
+	if w.span != nil {
+		defer w.span.Finish()
+	}
+	return w.tx.Commit()
+}
+
+// Rollback implements driver.Tx Rollback
+func (w *wrapperTx) Rollback() error {
+	if w.span != nil {
+		defer w.span.Finish()
+	}
+	return w.tx.Rollback()
+}

wrapper.go

@@ -1,159 +1,51 @@
-package wrapper
+package wrapper // import "go.unistack.org/micro-wrapper-sql/v3"
 
 import (
 	"context"
 	"database/sql"
 	"time"
 
-	"github.com/unistack-org/micro/v3/logger"
+	"go.unistack.org/micro/v3/meter"
-	"github.com/unistack-org/micro/v3/meter"
-	"github.com/unistack-org/micro/v3/tracer"
 )
 
-var (
+type Statser interface {
-	DefaultStatsInterval = 5 * time.Second
+	Stats() sql.DBStats
-	// default metric prefix
-	DefaultMetricPrefix = "micro_sql_"
-	// default label prefix
-	DefaultLabelPrefix = "micro_"
-)
-
-var (
-	DatabaseHostLabel   = "database_host"
-	DatabaseNameLabel   = "database_name"
-	ServiceNameLabel    = "service_name"
-	ServiceVersionLabel = "service_version"
-	ServiceIDLabel      = "service_id"
-
-	MaxOpenConnectionsLabel = "max_open_connections"
-	OpenConnectionsLabel    = "open_connections"
-	InuseConnectionsLabel   = "inuse_connections"
-	IdleConnectionsLabel    = "idle_connections"
-	WaitConnectionsLabel    = "wait_connections"
-	BlockedSecondsLabel     = "blocked_seconds"
-	MaxIdleClosedLabel      = "max_idle_closed"
-	MaxLifetimeClosedLabel  = "max_lifetime_closed"
-
-	//srequest_total // counter
-	//slatency_microseconds // summary
-	//srequest_duration_seconds // histogramm
-
-)
-
-type Options struct {
-	Logger         logger.Logger
-	Meter          meter.Meter
-	Tracer         tracer.Tracer
-	DatabaseHost   string
-	DatabaseName   string
-	ServiceName    string
-	ServiceVersion string
-	ServiceID      string
 }
 
-type Option func(*Options)
+func NewStatsMeter(ctx context.Context, db Statser, opts ...Option) {
+	options := NewOptions(opts...)
 
-func DatabaseHost(host string) Option {
+	m := options.Meter.Clone(
-	return func(opts *Options) {
+		meter.LabelPrefix(options.MeterLabelPrefix),
-		opts.DatabaseHost = host
+		meter.MetricPrefix(options.MeterMetricPrefix),
-	}
+		meter.Labels(
-}
+			labelHost, options.DatabaseHost,
+			labelDatabase, options.DatabaseName,
+		),
+	)
 
-func DatabaseName(name string) Option {
+	go func() {
-	return func(opts *Options) {
+		ticker := time.NewTicker(options.MeterStatsInterval)
-		opts.DatabaseName = name
-	}
-}
-
-func ServiceName(name string) Option {
-	return func(opts *Options) {
-		opts.ServiceName = name
-	}
-}
-
-func ServiceVersion(version string) Option {
-	return func(opts *Options) {
-		opts.ServiceVersion = version
-	}
-}
-
-func ServiceID(id string) Option {
-	return func(opts *Options) {
-		opts.ServiceID = id
-	}
-}
-
-func Meter(m meter.Meter) Option {
-	return func(opts *Options) {
-		opts.Meter = m
-	}
-}
-func Logger(l logger.Logger) Option {
-	return func(opts *Options) {
-		opts.Logger = l
-	}
-}
-
-func Tracer(t tracer.Tracer) Option {
-	return func(opts *Options) {
-		opts.Tracer = t
-	}
-}
-
-type queryKey struct{}
-
-func QueryName(ctx context.Context, name string) context.Context {
-	if ctx == nil {
-		ctx = context.Background()
-	}
-
-	return context.WithValue(ctx, queryKey{}, name)
-}
-
-func getName(ctx context.Context) string {
-	name := "Unknown"
-
-	val, ok := ctx.Value(queryKey{}).(string)
-	if ok && len(val) > 0 {
-		name = val
-	}
-
-	return name
-}
-
-type Wrapper struct {
-	db   *sql.DB
-	opts Options
-}
-
-func (w *Wrapper) collect() {
-	labels := []string{
-		DatabaseHostLabel, w.opts.DatabaseHost,
-		DatabaseNameLabel, w.opts.DatabaseName,
-		ServiceNameLabel, w.opts.ServiceName,
-		ServiceVersionLabel, w.opts.ServiceVersion,
-		ServiceIDLabel, w.opts.ServiceID,
-	}
-
-	ticker := time.NewTicker(DefaultStatsInterval)
 		defer ticker.Stop()
 
 		for {
 			select {
+			case <-ctx.Done():
+				return
 			case <-ticker.C:
-			if w.db == nil {
+				if db == nil {
-				continue
+					return
 				}
-
+				stats := db.Stats()
-			stats := w.db.Stats()
+				m.Counter(MaxOpenConnections).Set(uint64(stats.MaxOpenConnections))
-			w.opts.Meter.FloatCounter(MaxOpenConnectionsLabel, meter.Labels(labels...)).Set(float64(stats.MaxOpenConnections))
+				m.Counter(OpenConnections).Set(uint64(stats.OpenConnections))
-			w.opts.Meter.FloatCounter(OpenConnectionsLabel, meter.Labels(labels...)).Set(float64(stats.OpenConnections))
+				m.Counter(InuseConnections).Set(uint64(stats.InUse))
-			w.opts.Meter.FloatCounter(InuseConnectionsLabel, meter.Labels(labels...)).Set(float64(stats.InUse))
+				m.Counter(IdleConnections).Set(uint64(stats.Idle))
-			w.opts.Meter.FloatCounter(IdleConnectionsLabel, meter.Labels(labels...)).Set(float64(stats.Idle))
+				m.Counter(WaitConnections).Set(uint64(stats.WaitCount))
-			w.opts.Meter.FloatCounter(WaitConnectionsLabel, meter.Labels(labels...)).Set(float64(stats.WaitCount))
+				m.FloatCounter(BlockedSeconds).Set(stats.WaitDuration.Seconds())
-			w.opts.Meter.FloatCounter(BlockedSecondsLabel, meter.Labels(labels...)).Set(stats.WaitDuration.Seconds())
+				m.Counter(MaxIdleClosed).Set(uint64(stats.MaxIdleClosed))
-			w.opts.Meter.FloatCounter(MaxIdleClosedLabel, meter.Labels(labels...)).Set(float64(stats.MaxIdleClosed))
+				m.Counter(MaxLifetimeClosed).Set(uint64(stats.MaxLifetimeClosed))
-			w.opts.Meter.FloatCounter(MaxLifetimeClosedLabel, meter.Labels(labels...)).Set(float64(stats.MaxLifetimeClosed))
 			}
 		}
+	}()
 }