43 lines
1012 B
Go
43 lines
1012 B
Go
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package main
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import (
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"log"
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"net/http"
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"os"
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"github.com/gin-gonic/gin"
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"github.com/newrelic/go-agent"
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)
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const (
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// NewRelicTxnKey is the key used to retrieve the NewRelic Transaction from the context
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NewRelicTxnKey = "NewRelicTxnKey"
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)
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// NewRelicMonitoring is a middleware that starts a newrelic transaction, stores it in the context, then calls the next handler
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func NewRelicMonitoring(app newrelic.Application) gin.HandlerFunc {
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return func(ctx *gin.Context) {
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txn := app.StartTransaction(ctx.Request.URL.Path, ctx.Writer, ctx.Request)
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defer txn.End()
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ctx.Set(NewRelicTxnKey, txn)
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ctx.Next()
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}
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}
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func main() {
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router := gin.Default()
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cfg := newrelic.NewConfig(os.Getenv("APP_NAME"), os.Getenv("NEW_RELIC_API_KEY"))
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app, err := newrelic.NewApplication(cfg)
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if err != nil {
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log.Printf("failed to make new_relic app: %v", err)
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} else {
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router.Use(NewRelicMonitoring(app))
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}
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router.GET("/", func(c *gin.Context) {
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c.String(http.StatusOK, "Hello World!\n")
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})
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router.Run()
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}
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