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Add proxy for managing tiles

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This commit is contained in:
Eli Ribble 2026-03-11 14:28:59 +00:00
parent d6407933f8
commit 3743d63692
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10 changed files with 316 additions and 198 deletions
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2
api/routes.go
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@ -24,7 +24,7 @@ func AddRoutes(r chi.Router) {
r.Method("POST", "/image/{uuid}/content", auth.NewEnsureAuth(apiImageContentPost))
r.Method("GET", "/leads", authenticatedHandlerJSON(listLead))
r.Method("POST", "/leads", authenticatedHandlerJSONPost(postLeads))
r.Method("GET", "/tile//{z}/{y}/{x}", auth.NewEnsureAuth(getTile))
r.Method("GET", "/tile/{z}/{y}/{x}", auth.NewEnsureAuth(getTile))
// Unauthenticated endpoints
r.Get("/district", apiGetDistrict)

67
api/tile.go
View file

@ -1,12 +1,21 @@
package api
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"net/http"
"os"
"path/filepath"
"strconv"
"github.com/Gleipnir-Technology/nidus-sync/config"
"github.com/Gleipnir-Technology/nidus-sync/db/models"
"github.com/Gleipnir-Technology/nidus-sync/platform/imagetile"
"github.com/go-chi/chi/v5"
"github.com/rs/zerolog/log"
)
func getTile(w http.ResponseWriter, r *http.Request, org *models.Organization, user *models.User) {
@ -29,5 +38,61 @@ func getTile(w http.ResponseWriter, r *http.Request, org *models.Organization, u
http.Error(w, "can't parse x as an integer", http.StatusBadRequest)
return
}
fmt.Fprintf(w, "%d, %d, %d", x, y, z)
err = handleTile(r.Context(), w, org, uint(z), uint(y), uint(x))
if err != nil {
log.Error().Err(err).Msg("failed to do tile")
http.Error(w, "failed to do tile", http.StatusInternalServerError)
return
}
}
func handleTile(ctx context.Context, w http.ResponseWriter, org *models.Organization, z, y, x uint) error {
if org.ArcgisMapServiceID.IsNull() {
return fmt.Errorf("no map service ID set")
}
map_service_id := org.ArcgisMapServiceID.MustGet()
tile_path := fmt.Sprintf("%s/tile-cache/%s/%d/%d/%d.raw", config.FilesDirectory, map_service_id, z, y, x)
file, err := os.Open(tile_path)
if err == nil {
defer file.Close()
img, err := io.ReadAll(file)
if err != nil {
return fmt.Errorf("readall from %s: %w", tile_path, err)
}
w.Header().Set("Content-Type", "image/png")
w.Header().Set("Content-Length", fmt.Sprintf("%d", len(img)))
_, err = io.Copy(w, bytes.NewBuffer(img))
if err != nil {
return fmt.Errorf("copy bytes from %s: %w", tile_path)
}
return nil
}
content, err := imagetile.ImageAtTile(ctx, org, uint(z), uint(y), uint(x))
if err != nil {
if errors.Is(err, imagetile.ErrNoTile) {
w.Header().Set("Content-Type", "image/png")
w.Header().Set("Content-Length", fmt.Sprintf("%d", len(content)))
_, err = io.Copy(w, bytes.NewBuffer(content))
if err != nil {
return fmt.Errorf("write image file: %w", err)
}
return nil
}
return fmt.Errorf("image at tile: %w", err)
}
parent := filepath.Dir(tile_path)
err = os.MkdirAll(parent, 0750)
if err != nil {
return fmt.Errorf("mkdirall: %w", err)
}
err = os.WriteFile(tile_path, content, 0644)
if err != nil {
return fmt.Errorf("write image file: %w", err)
}
w.Header().Set("Content-Type", "image/png")
w.Header().Set("Content-Length", fmt.Sprintf("%d", len(content)))
_, err = io.Copy(w, bytes.NewBuffer(content))
if err != nil {
return fmt.Errorf("write image file: %w", err)
}
return nil
}