Integrating tegola with fiber code.

[mohnark]

Im trying to integrate some tegola functions to avoid reinventing the wheel. My goal is vector tiling of data from my postgis db. I want to perform some additional queries and operations on data.

This is the way Im trying to intergrate

package main

import (
	"io"
	"log"
	"net/http"
	"strconv"

	"github.com/gofiber/fiber/v2"
	"github.com/go-spatial/tegola/mvt"
	"github.com/go-spatial/tegola/provider/postgis"
	"github.com/go-spatial/tegola/geom/slippy"
)

func main() {
	app := fiber.New()

	// Initialize the PostGIS provider
	pgProvider, err := postgis.NewTileProvider(pgConfig)
	if err != nil {
		log.Fatalf("failed to initialize PostGIS provider: %v", err)
	}

	app.Get("/tiles/:z/:x/:y", func(c *fiber.Ctx) error {
		z := c.Params("z")
		x := c.Params("x")
		y := c.Params("y")

		// Convert parameters to integers
		zInt, err := strconv.Atoi(z)
		if err != nil {
			return c.Status(fiber.StatusBadRequest).SendString("Invalid parameter z")
		}
		xInt, err := strconv.Atoi(x)
		if err != nil {
			return c.Status(fiber.StatusBadRequest).SendString("Invalid parameter x")
		}
		yInt, err := strconv.Atoi(y)
		if err != nil {
			return c.Status(fiber.StatusBadRequest).SendString("Invalid parameter y")
		}
		tile := slippy.NewTile(uint(zInt), uint(xInt), uint(yInt))

		layer, err := pgProvider.MVTLayer(tile, "public.fields", nil)
		if err != nil {
			return c.Status(fiber.StatusInternalServerError).SendString("Error fetching tile data")
		}
		mvtTile := mvt.Tile{Layers: []mvt.Layer{layer}}
		encodedTile, err := mvtTile.MarshalBinary()
		if err != nil {
			return c.Status(fiber.StatusInternalServerError).SendString("Error encoding tile data")
		}

		c.Set("Content-Type", "application/x-protobuf")
		return c.Send(encodedTile)
	})

	log.Fatal(app.Listen(":3000"))
}

[ARolek]

@Kumail09 are you asking if this is possible, or are you hitting an issue and need some guidance? I also think you should look into using the MVTProvider interface:

tegola/provider/mvt_provider.go

Lines 9 to 14 in c5bb076

	type MVTTiler interface {
	Layerer
	// MVTForLayers will return a MVT byte array or an error for the given layer names.
	MVTForLayers(ctx context.Context, tile Tile, params Params, layers []Layer) ([]byte, error)
	}