Version qui gère mieux les écritures concurentes dans le cache

src/Controllers/d.poi.php

@@ -151,7 +151,7 @@ switch ($controller->splitted_url[1]) {
 		$x = intval($controller->splitted_url[3]);
 		$y = intval(str_replace(".pbf", "", $controller->splitted_url[4]));
 
-	    $cacheRoot = $config['public_folder'].'/cache/tiles';
+		$cacheRoot = $config['public_folder'] . '/cache/tiles';
 		$cacheDir  = $cacheRoot . '/' . $z . '/' . $x;
 		$cacheFile = $cacheDir . '/' . $y . '.pbf';
 
@@ -164,7 +164,19 @@ switch ($controller->splitted_url[1]) {
 			exit;
 		}
 
-	    // Cache miss : on génère une fois
+		// Création du dossier si nécessaire
+		if (!is_dir($cacheDir)) {
+			if (!@mkdir($cacheDir, 0777, true) && !is_dir($cacheDir)) {
+				http_response_code(500);
+				exit('Tile cache directory not writable');
+			}
+		}
+
+		if (!is_writable($cacheDir)) {
+			http_response_code(500);
+			exit('Tile cache directory is not writable');
+		}
+
 		$pois = new Kabano\Pois();
 
 		try {
@@ -175,16 +187,14 @@ switch ($controller->splitted_url[1]) {
 			exit;
 		}
 
-	    if (!is_dir($cacheDir)) {
+		$tmp = $cacheDir . '/' . uniqid('tile_', true) . '.pbf.tmp';
-	        mkdir($cacheDir, 0777, true);
+
+		if (file_put_contents($tmp, $tile) === false) {
+			http_response_code(500);
+			exit('Unable to write tile cache');
 		}
 
-	    $tmp = $cacheFile . '.tmp';
-	    file_put_contents($tmp, $tile);
-
-	    if (file_exists($tmp)) {
 		rename($tmp, $cacheFile);
-	    }
 
 		header('Content-Type: application/x-protobuf');
 		header('Cache-Control: public, max-age=31536000, immutable');