31 lines
1.0 KiB
Markdown
31 lines
1.0 KiB
Markdown
The [New Relic Go Agent](https://github.com/newrelic/go-agent) provides a nice middleware for the stdlib handler signature.
|
|
The following is an adaptation of that middleware for Gin.
|
|
|
|
```golang
|
|
const (
|
|
// NewRelicTxnKey is the key used to retrieve the NewRelic Transaction from the context
|
|
NewRelicTxnKey = "NewRelicTxnKey"
|
|
)
|
|
|
|
// NewRelicMonitoring is a middleware that starts a newrelic transaction, stores it in the context, then calls the next handler
|
|
func NewRelicMonitoring(app newrelic.Application) gin.HandlerFunc {
|
|
return func(ctx *gin.Context) {
|
|
txn := app.StartTransaction(ctx.Request.URL.Path, ctx.Writer, ctx.Request)
|
|
defer txn.End()
|
|
ctx.Set(NewRelicTxnKey, txn)
|
|
ctx.Next()
|
|
}
|
|
}
|
|
```
|
|
and in `main.go` or equivalent...
|
|
```golang
|
|
router := gin.Default()
|
|
cfg := newrelic.NewConfig(os.Getenv("APP_NAME"), os.Getenv("NEW_RELIC_API_KEY"))
|
|
app, err := newrelic.NewApplication(cfg)
|
|
if err != nil {
|
|
log.Printf("failed to make new_relic app: %v", err)
|
|
} else {
|
|
router.Use(adapters.NewRelicMonitoring(app))
|
|
}
|
|
```
|