1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
// Package nrredis instruments github.com/go-redis/redis/v7.
//
// Use this package to instrument your go-redis/redis/v7 calls without having to
// manually create DatastoreSegments.
package nrredis
import (
"context"
"net"
"strings"
redis "github.com/go-redis/redis/v7"
"github.com/newrelic/go-agent/v3/internal"
newrelic "github.com/newrelic/go-agent/v3/newrelic"
)
func init() { internal.TrackUsage("integration", "datastore", "redis") }
type contextKeyType struct{}
type hook struct {
segment newrelic.DatastoreSegment
}
var (
segmentContextKey = contextKeyType(struct{}{})
)
// NewHook creates a redis.Hook to instrument Redis calls. Add it to your
// client, then ensure that all calls contain a context which includes the
// transaction. The options are optional. Provide them to get instance metrics
// broken out by host and port. The hook returned can be used with
// redis.Client, redis.ClusterClient, and redis.Ring.
func NewHook(opts *redis.Options) redis.Hook {
h := hook{}
h.segment.Product = newrelic.DatastoreRedis
if opts != nil {
// Per https://godoc.org/github.com/go-redis/redis#Options the
// network should either be tcp or unix, and the default is tcp.
if opts.Network == "unix" {
h.segment.Host = "localhost"
h.segment.PortPathOrID = opts.Addr
} else if host, port, err := net.SplitHostPort(opts.Addr); err == nil {
if "" == host {
host = "localhost"
}
h.segment.Host = host
h.segment.PortPathOrID = port
}
}
return h
}
func (h hook) before(ctx context.Context, operation string) (context.Context, error) {
txn := newrelic.FromContext(ctx)
if txn == nil {
return ctx, nil
}
s := h.segment
s.StartTime = txn.StartSegmentNow()
s.Operation = operation
ctx = context.WithValue(ctx, segmentContextKey, &s)
return ctx, nil
}
func (h hook) after(ctx context.Context) {
if segment, ok := ctx.Value(segmentContextKey).(interface{ End() }); ok {
segment.End()
}
}
func (h hook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
return h.before(ctx, cmd.Name())
}
func (h hook) AfterProcess(ctx context.Context, cmd redis.Cmder) error {
h.after(ctx)
return nil
}
func pipelineOperation(cmds []redis.Cmder) string {
operations := make([]string, 0, len(cmds))
for _, cmd := range cmds {
operations = append(operations, cmd.Name())
}
return "pipeline:" + strings.Join(operations, ",")
}
func (h hook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
return h.before(ctx, pipelineOperation(cmds))
}
func (h hook) AfterProcessPipeline(ctx context.Context, cmds []redis.Cmder) error {
h.after(ctx)
return nil
}
|
