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otel: add RemoteAddr

This commit is contained in:
Vladimir Mihailenco 2020-09-28 15:35:57 +03:00
parent 9e4063ab5a
commit 566840fe27
4 changed files with 26 additions and 13 deletions
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10
internal/pool/conn.go
View File

@ -9,6 +9,7 @@ import (
"github.com/go-redis/redis/v8/internal"
"github.com/go-redis/redis/v8/internal/proto"
"go.opentelemetry.io/otel/api/trace"
)
var noDeadline = time.Time{}
@ -58,11 +59,14 @@ func (cn *Conn) Write(b []byte) (int, error) {
}
func (cn *Conn) RemoteAddr() net.Addr {
return cn.netConn.RemoteAddr()
if cn.netConn != nil {
return cn.netConn.RemoteAddr()
}
return nil
}
func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error) error {
return internal.WithSpan(ctx, "with_reader", func(ctx context.Context) error {
return internal.WithSpan(ctx, "with_reader", func(ctx context.Context, span trace.Span) error {
if err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout)); err != nil {
return internal.RecordError(ctx, err)
}
@ -76,7 +80,7 @@ func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(r
func (cn *Conn) WithWriter(
ctx context.Context, timeout time.Duration, fn func(wr *proto.Writer) error,
) error {
return internal.WithSpan(ctx, "with_writer", func(ctx context.Context) error {
return internal.WithSpan(ctx, "with_writer", func(ctx context.Context, span trace.Span) error {
if err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout)); err != nil {
return internal.RecordError(ctx, err)
}

10
internal/util.go
View File

@ -11,7 +11,7 @@ import (
)
func Sleep(ctx context.Context, dur time.Duration) error {
return WithSpan(ctx, "sleep", func(ctx context.Context) error {
return WithSpan(ctx, "sleep", func(ctx context.Context, span trace.Span) error {
t := time.NewTimer(dur)
defer t.Stop()
@ -62,15 +62,15 @@ func Unwrap(err error) error {
//------------------------------------------------------------------------------
func WithSpan(ctx context.Context, name string, fn func(context.Context) error) error {
if !trace.SpanFromContext(ctx).IsRecording() {
return fn(ctx)
func WithSpan(ctx context.Context, name string, fn func(context.Context, trace.Span) error) error {
if span := trace.SpanFromContext(ctx); !span.IsRecording() {
return fn(ctx, span)
}
ctx, span := global.Tracer("github.com/go-redis/redis").Start(ctx, name)
defer span.End()
return fn(ctx)
return fn(ctx, span)
}
func RecordError(ctx context.Context, err error) error {

4
options.go
View File

@ -293,9 +293,9 @@ func newConnPool(opt *Options) *pool.ConnPool {
return pool.NewConnPool(&pool.Options{
Dialer: func(ctx context.Context) (net.Conn, error) {
var conn net.Conn
err := internal.WithSpan(ctx, "dialer", func(ctx context.Context) error {
err := internal.WithSpan(ctx, "dialer", func(ctx context.Context, span trace.Span) error {
var err error
trace.SpanFromContext(ctx).SetAttributes(
span.SetAttributes(
label.String("redis.network", opt.Network),
label.String("redis.addr", opt.Addr),
)

15
redis.go
View File

@ -8,6 +8,8 @@ import (
"github.com/go-redis/redis/v8/internal"
"github.com/go-redis/redis/v8/internal/pool"
"github.com/go-redis/redis/v8/internal/proto"
"go.opentelemetry.io/otel/api/trace"
"go.opentelemetry.io/otel/label"
)
// Nil reply returned by Redis when key does not exist.
@ -223,7 +225,7 @@ func (c *baseClient) _getConn(ctx context.Context) (*pool.Conn, error) {
return cn, nil
}
err = internal.WithSpan(ctx, "init_conn", func(ctx context.Context) error {
err = internal.WithSpan(ctx, "init_conn", func(ctx context.Context, span trace.Span) error {
return c.initConn(ctx, cn)
})
if err != nil {
@ -297,11 +299,18 @@ func (c *baseClient) releaseConn(ctx context.Context, cn *pool.Conn, err error)
func (c *baseClient) withConn(
ctx context.Context, fn func(context.Context, *pool.Conn) error,
) error {
return internal.WithSpan(ctx, "with_conn", func(ctx context.Context) error {
return internal.WithSpan(ctx, "with_conn", func(ctx context.Context, span trace.Span) error {
cn, err := c.getConn(ctx)
if err != nil {
return err
}
if span.IsRecording() {
if remoteAddr := cn.RemoteAddr(); remoteAddr != nil {
span.SetAttributes(label.String("net.peer.ip", remoteAddr.String()))
}
}
defer func() {
c.releaseConn(ctx, cn, err)
}()
@ -317,7 +326,7 @@ func (c *baseClient) process(ctx context.Context, cmd Cmder) error {
attempt := attempt
var retry bool
err := internal.WithSpan(ctx, "process", func(ctx context.Context) error {
err := internal.WithSpan(ctx, "process", func(ctx context.Context, span trace.Span) error {
if attempt > 0 {
if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
return err