Monitor Echo v3 in Go Applications with Atatus Go Agent

Installation Steps For Echo 3.x

If you are using Echo 3.x (github.com/labstack/echo), use module/atecho.

Install Atatus Go Agent and framework module

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```
go get go.atatus.com/agent
go get go.atatus.com/agent/module/atecho
```

Set up tracer and add Atatus middleware

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import (
    "github.com/labstack/echo"

    "go.atatus.com/agent"
    "go.atatus.com/agent/module/atecho"
)

func main() {
    // Initialize Atatus tracer using environment variables
    tracer := atatus.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")

    e := echo.New()

    // Setup echo router and apply Atatus middleware (atecho)
    e.Use(atecho.Middleware())

    e.GET("/", handleRequest)

    // Start server
    e.Fatal(e.Start(":8080"))    
}

func handleRequest(c echo.Context) error {
    ctx:= c.Request().Context() // c.Request().Context() should be propagated to downstream operations such as database queries, http external API calls.

    // Example 
    _ = db.QueryContext(ctx, "SELECT 'Atatus!'").Scan(&greeting)
}

Clean Up and Sync Dependencies

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

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```
go run main.go
```