Monitor net/http in Go Applications with Atatus Go Agent

Installation steps

Install Atatus Go Agent and framework module

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```
go get go.atatus.com/agent
go get go.atatus.com/agent/module/athttp"
```

Set up tracer and add Atatus middleware

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import (
    net/http

    atatus "go.atatus.com/agent"
    "go.atatus.com/agent/module/athttp"
)
func main() {

    // Initialize Atatus tracer using environment variables
    tracer := at.DefaultTracer
    tracer.Service.LicenseKey = os.Getenv("ATATUS_LICENSE_KEY")
    tracer.Service.AppName = os.Getenv("ATATUS_APP_NAME")
    tracer.Service.Tracing = os.Getenv("ATATUS_TRACING")
    tracer.Service.Analytics = os.Getenv("ATATUS_ANALYTICS")

    // Register HTTP handlers with Atatus APM monitoring using athttp.Wrap
    http.Handle("/api/example1", athttp.Wrap(http.HandlerFunc(handleRequest)))        

    // Start the HTTP server
    log.Fatal(http.ListenAndServe(":8000", nil)) 
}

func handleRequest(w http.ResponseWriter, r *http.Request) {
    // The context from  r.Context() should be propagated to downstream operations,
    // such as database queries and external HTTP API calls

    ctx := r.Context()
    _ = db.QueryContext(ctx, "SELECT 'Atatus!'").Scan(&greeting)

}

Note:

Before running your application, make sure these environment variables are set in your terminal or .env file:

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export ATATUS_LICENSE_KEY=<your_atatus_license_key>
export ATATUS_APP_NAME=<your_application_name>
export ATATUS_TRACING=true
export ATATUS_ANALYTICS=true

Clean Up and Sync Dependencies

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```
go mod tidy
```
Run the Application

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```
go run main.go
```