Describe environment variables for PostgreSQL configuration in readme…

… and tile fetch timeout
konturio · Nov 12, 2024 · a6a741f · a6a741f
1 parent 54cfacb
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diff --git a/README.md b/README.md
@@ -119,3 +119,22 @@ const levels = {
    - Click on the Import button.
 
 9. Open the browser and navigate to http://localhost:8001/mosaic-viewer to view the mosaic map.
+
+## Environment variables
+
+| Name                    | Description                             | Default Value   |
+| ----------------------- | --------------------------------------- | --------------- |
+| `PGHOST`                | PostgreSQL host                         |                 |
+| `PGUSER`                | PostgreSQL user                         |                 |
+| `PGPASSWORD`            | PostgreSQL password                     |                 |
+| `PGDATABASE`            | PostgreSQL database name                | `postgres`      |
+| `OAM_LAYER_ID`          | OpenAerialMap layer ID                  | `openaerialmap` |
+| `PORT`                  | Server port                             |                 |
+| `BASE_URL`              | Root URL of the server                  |                 |
+| `TITILER_BASE_URL`      | URL of your Titiler installation        |                 |
+| `TILES_CACHE_DIR_PATH`  | Path for the tiles cache                | `/tiles`        |
+| `LOG_LEVEL`             | Logging level                           |                 |
+| `DB_POOL_SIZE`          | Size of the PostgreSQL connection pool  | `16`            |
+| `DB_DISABLE_SSL`        | Disable SSL for PostgreSQL connection   | `false`         |
+| `TILE_FETCH_TIMEOUT_MS` | Tile fetch timeout in milliseconds      | `60000`         |
+| `FETCH_QUEUE_TTL_MS`    | Fetch promise queue TTL in milliseconds | `600000`        |
diff --git a/src/titiler_fetcher.mjs b/src/titiler_fetcher.mjs
@@ -12,9 +12,13 @@ const TITILER_BASE_URL = process.env.TITILER_BASE_URL;
 const tileRequestQueue = new PQueue({ concurrency: numCPUs });
 const activeTileRequests = new Map();
 
+const TILE_FETCH_TIMEOUT_MS =
+  Number.parseInt(process.env.TILE_FETCH_TIMEOUT_MS, 10) || 1000 * 60 * 1; // 1 minute default
+
 async function fetchTile(url) {
   try {
     const responsePromise = got(url, {
+      timeout: { request: TILE_FETCH_TIMEOUT_MS },
       throwHttpErrors: true,
     });
 
@@ -34,7 +38,7 @@ async function fetchTile(url) {
   }
 }
 
-const FETCH_QUEUE_TTL = Number.parseInt(process.env.TILE_FETCH_TTL_MS, 10) || 1000 * 60 * 10; // 10 minutes default
+const FETCH_QUEUE_TTL_MS = Number.parseInt(process.env.FETCH_QUEUE_TTL_MS, 10) || 1000 * 60 * 10; // 10 minutes default
 
 async function enqueueTileFetching(tileUrl, z, x, y) {
   const url = tileUrl.replace("{z}", z).replace("{x}", x).replace("{y}", y);
@@ -43,10 +47,10 @@ async function enqueueTileFetching(tileUrl, z, x, y) {
   }
 
   const request = tileRequestQueue
-    .add(() => fetchTile(url), { priority: Math.pow(2, z), timeout: FETCH_QUEUE_TTL })
+    .add(() => fetchTile(url), { priority: Math.pow(2, z), timeout: FETCH_QUEUE_TTL_MS })
     .catch((error) => {
       if (error.name === "TimeoutError") {
-        console.error(`Tile request timed out after ${FETCH_QUEUE_TTL}ms for URL: ${url}`);
+        console.error(`Tile request timed out after ${FETCH_QUEUE_TTL_MS}ms for URL: ${url}`);
       } else {
         console.error(`Error fetching tile: ${url}`, error);
       }