You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: get_event.go
    path of file: ./repos/porter/api/server/handlers/porter_app
    
    the code of the file until where you have to start completion: package porter_app

import (
	"net/http"

	"github.com/google/uuid"
	"github.com/porter-dev/porter/api/server/handlers"
	"github.com/porter-dev/porter/api/server/shared"
	"github.com/porter-dev/porter/api/server/shared/apierrors"
	"github.com/porter-dev/porter/api/server/shared/config"
	"github.com/porter-dev/porter/api/server/shared/requestutils"
	"github.com/porter-dev/porter/api/types"
	"github.com/porter-dev/porter/internal/models"
	"github.com/porter-dev/porter/internal/telemetry"
)

type GetPorterAppEventHandler struct {
	handlers.PorterHandlerWriter
}

func NewGetPorterAppEventHandler(
	config *config.Config,
	writer shared.ResultWriter,
) *GetPorterAppEventHandler {
	return &GetPorterAppEventHandler{
		PorterHandlerWriter: handlers.NewDefaultPorterHandler(config, nil, writer),
	}
}

func (p *GetPorterAppEventHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	ctx, span := telemetry.NewSpan(r.Context(), "serve-get-porter-app-event")
	defer span.End()

	cluster, _ := ctx.Value(types.ClusterScope
    
func (p *GetPorterAppEventHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	ctx, span := telemetry.NewSpan(r.Context(), "serve-get-porter-app-event")
	defer span.End()

	cluster, _ := ctx.Value(types.ClusterScope).(*models.Cluster)
	telemetry.WithAttributes(span,
		telemetry.AttributeKV{Key: "cluster-id", Value: int(cluster.ID)},
		telemetry.AttributeKV{Key: "project-id", Value: int(cluster.ProjectID)},
	)

	eventId, reqErr := requestutils.GetURLParamString(r, types.URLParamPorterAppEventID)
	if reqErr != nil {
		e := telemetry.Error(ctx, span, nil, "error parsing event id from url")
		p.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(e, http.StatusBadRequest))
		return
	}

	submittedEventID, err := uuid.Parse(eventId)
	if err != nil {
		e := telemetry.Error(ctx, span, err, "error parsing porter app event id as uuid")
		p.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(e, http.StatusBadRequest))
		return
	}

	event, err := p.Repo().PorterAppEvent().ReadEvent(ctx, submittedEventID)
	if err != nil {
		e := telemetry.Error(ctx, span, err, "error retrieving porter app event")
		p.HandleAPIError(w, r, apierrors.NewErrPassThroughToClient(e, http.StatusBadRequest))
		return
	}

	res := struct {
		Event types.PorterAppEvent `json:"event"`
	}{
		Event: event.ToPorterAppEvent(),
	}
	p.WriteResult(w, r, res)
}