Update package version to 2.0.0

- styles at /style/{id}/style.json
- rendered tiles at /style/{id}/{z}/{x}/{y}.{format}
- TileJSONs at /style/{id}.json

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - "4"
+  - "6"
 env:
   - CXX=g++-4.8
 addons:
@@ -12,7 +12,7 @@ addons:
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq libcairo2-dev libjpeg8-dev libpango1.0-dev libgif-dev build-essential g++
-  - sudo apt-get install -qq xvfb
+  - sudo apt-get install -qq xvfb libgles2-mesa-dev libgbm-dev libxxf86vm-dev
 install:
   - npm install
   - wget -O test_data.zip https://github.com/klokantech/tileserver-gl/releases/download/v1.3.0/test_data.zip

Dockerfile

@@ -9,10 +9,14 @@ RUN apt-get -qq update \
     build-essential \
     python \
     libcairo2-dev \
+    libgles2-mesa-dev \
+    libgbm-dev \
+    libllvm3.9 \
     libprotobuf-dev \
+    libxxf86vm-dev \
     xvfb \
-&& echo "deb https://deb.nodesource.com/node_4.x jessie main" >> /etc/apt/sources.list.d/nodejs.list \
-&& echo "deb-src https://deb.nodesource.com/node_4.x jessie main" >> /etc/apt/sources.list.d/nodejs.list \
+&& echo "deb https://deb.nodesource.com/node_6.x jessie main" >> /etc/apt/sources.list.d/nodejs.list \
+&& echo "deb-src https://deb.nodesource.com/node_6.x jessie main" >> /etc/apt/sources.list.d/nodejs.list \
 && apt-get -qq update \
 && DEBIAN_FRONTEND=noninteractive apt-get -y --allow-unauthenticated install \
     nodejs \
@@ -26,5 +30,7 @@ RUN cd /usr/src/app && npm install --production
 VOLUME /data
 WORKDIR /data
 
+ENV NODE_ENV="production"
+
 EXPOSE 80
 ENTRYPOINT ["/usr/src/app/run.sh"]

Dockerfile_light

@@ -1,4 +1,4 @@
-FROM node:4
+FROM node:6
 MAINTAINER Petr Sloup <petr.sloup@klokantech.com>
 
 RUN mkdir -p /usr/src/app
@@ -8,5 +8,7 @@ RUN cd /usr/src/app && npm install --production
 VOLUME /data
 WORKDIR /data
 
+ENV NODE_ENV="production"
+
 EXPOSE 80
 ENTRYPOINT ["node", "/usr/src/app/", "-p", "80"]

docs/deployment.rst

@@ -17,4 +17,4 @@ Nginx can be used to add protection via https, password, referrer, IP address re
 Running behind a proxy or a load-balancer
 =========================================
 
-If you need to run TileServer GL behind a proxy, make sure the proxy sends ``X-Forwarded-*`` headers to the server (most importantly ``X-Forwarded-Host`` and ``X-Forwaded-Proto``) to ensures the URLs generated inside TileJSON etc. are using the desired domain and protocol.
+If you need to run TileServer GL behind a proxy, make sure the proxy sends ``X-Forwarded-*`` headers to the server (most importantly ``X-Forwarded-Host`` and ``X-Forwarded-Proto``) to ensures the URLs generated inside TileJSON etc. are using the desired domain and protocol.

docs/endpoints.rst

@@ -6,18 +6,18 @@ If you visit the server on the configured port (default 8080) you can see your m
 
 Styles
 ======
-* Styles are served at ``/styles/{id}.json`` (+ array at ``/styles.json``)
+* Styles are served at ``/styles/{id}/style.json`` (+ array at ``/styles.json``)
 
   * Sprites at ``/styles/{id}/sprite[@2x].{format}``
   * Fonts at ``/fonts/{fontstack}/{start}-{end}.pbf``
 
 Rendered tiles
 ==============
-* Rendered tiles are served at ``/styles/{id}/rendered/{z}/{x}/{y}[@2x].{format}``
+* Rendered tiles are served at ``/styles/{id}/{z}/{x}/{y}[@2x].{format}``
 
   * The optional ``@2x`` (or ``@3x``, ``@4x``) part can be used to render HiDPI (retina) tiles
   * Available formats: ``png``, ``jpg`` (``jpeg``), ``webp``
-  * TileJSON at ``/styles/{id}/rendered.json``
+  * TileJSON at ``/styles/{id}.json``
 
 * The rendered tiles are not available in the ``tileserver-gl-light`` version.
 
@@ -64,3 +64,10 @@ Array of all TileJSONs is at ``/index.json`` (``/rendered.json``; ``/data.json``
 List of available fonts
 =======================
 Array of names of the available fonts is at ``/fonts.json``
+
+Health check
+============
+Endpoint reporting health status is at ``/health`` and currently returns:
+
+  * ``503`` Starting - for a short period before everything is initialized
+  * ``200`` OK - when the server is running

docs/installation.rst

@@ -41,7 +41,7 @@ Alternatively, you can use ``tileserver-gl-light`` package instead, which is pur
 From source
 ===========
 
-Make sure you have Node v4 (nvm install 4) and run::
+Make sure you have Node v6 (nvm install 6) and run::
 
   npm install
   node .

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tileserver-gl",
-  "version": "1.5.0",
+  "version": "2.0.0",
   "description": "Map tile server for JSON GL styles - vector and server side generated raster tiles",
   "main": "src/main.js",
   "bin": "src/main.js",
@@ -13,34 +13,34 @@
   },
   "license": "BSD-2-Clause",
   "engines": {
-    "node": ">=4.2.1 <5"
+    "node": ">=6 <7"
   },
   "scripts": {
     "test": "mocha test/**.js"
   },
   "dependencies": {
-    "async": "2.2.0",
+    "@mapbox/mapbox-gl-native": "3.5.4",
+    "@mapbox/mbtiles": "0.9.0",
+    "@mapbox/sphericalmercator": "1.0.5",
+    "@mapbox/vector-tile": "1.3.0",
     "advanced-pool": "0.3.2",
     "base64url": "2.0.0",
     "canvas": "1.6.5",
     "clone": "2.1.1",
     "color": "1.0.3",
-    "cors": "2.8.2",
-    "express": "4.15.2",
+    "cors": "2.8.3",
+    "express": "4.15.3",
     "glyph-pbf-composite": "0.0.2",
-    "handlebars": "4.0.6",
-    "mbtiles": "0.9.0",
-    "morgan": "1.8.1",
+    "handlebars": "4.0.10",
+    "http-shutdown": "^1.2.0",
+    "morgan": "1.8.2",
     "node-pngquant-native": "1.0.4",
     "nomnom": "1.8.1",
     "pbf": "3.0.5",
     "proj4": "2.4.3",
     "request": "2.81.0",
-    "sharp": "0.17.2",
-    "tileserver-gl-styles": "1.1.1",
-    "vector-tile": "1.3.0",
-    "@mapbox/mapbox-gl-native": "3.4.4",
-    "@mapbox/sphericalmercator": "1.0.5"
+    "sharp": "0.18.1",
+    "tileserver-gl-styles": "1.1.1"
   },
   "devDependencies": {
     "should": "^11.2.0",

public/templates/index.tmpl

@@ -25,7 +25,7 @@
       {{#each styles}}
         <div class="item">
           {{#if thumbnail}}
-            <img src="/styles/{{@key}}/rendered/{{thumbnail}}{{&../key_query}}" alt="{{name}} preview" />
+            <img src="/styles/{{@key}}/{{thumbnail}}{{&../key_query}}" alt="{{name}} preview" />
           {{else}}
             <img src="/images/placeholder.png" alt="{{name}} preview" />
           {{/if}}
@@ -35,10 +35,10 @@
             <p class="services">
               services:
               {{#if serving_data}}
-                <a href="/styles/{{@key}}.json{{&../key_query}}">GL Style</a>
+                <a href="/styles/{{@key}}/style.json{{&../key_query}}">GL Style</a>
               {{/if}}
               {{#if serving_rendered}}
-                {{#if serving_data}}| {{/if}}<a href="/styles/{{@key}}/rendered.json{{&../key_query}}">TileJSON</a>
+                {{#if serving_data}}| {{/if}}<a href="/styles/{{@key}}.json{{&../key_query}}">TileJSON</a>
               {{/if}}
               {{#if wmts_link}}
                 | <a href="{{&wmts_link}}">WMTS</a>

public/templates/viewer.tmpl

@@ -27,12 +27,12 @@
       mapboxgl.setRTLTextPlugin('/mapbox-gl-rtl-text.js{{&key_query}}');
       var map = new mapboxgl.Map({
         container: 'map',
-        style: '/styles/{{id}}.json{{&key_query}}',
+        style: '/styles/{{id}}/style.json{{&key_query}}',
         hash: true
       });
       map.addControl(new mapboxgl.NavigationControl());
     } else {
-      var map = L.mapbox.map('map', '/styles/{{id}}/rendered.json{{&key_query}}', { zoomControl: false });
+      var map = L.mapbox.map('map', '/styles/{{id}}.json{{&key_query}}', { zoomControl: false });
       new L.Control.Zoom({ position: 'topright' }).addTo(map);
       setTimeout(function() {
         new L.Hash(map);

src/main.js

@@ -6,7 +6,7 @@ var fs = require('fs'),
     path = require('path'),
     request = require('request');
 
-var mbtiles = require('mbtiles');
+var mbtiles = require('@mapbox/mbtiles');
 
 var packageJson = require('../package');
 
@@ -32,6 +32,10 @@ var opts = require('nomnom')
     default: 8080,
     help: 'Port'
   })
+  .option('cors', {
+    default: true,
+    help: 'Enable Cross-origin resource sharing headers'
+  })
   .option('verbose', {
     abbr: 'V',
     flag: true,
@@ -54,7 +58,8 @@ var startServer = function(configPath, config) {
     configPath: configPath,
     config: config,
     bind: opts.bind,
-    port: opts.port
+    port: opts.port,
+    cors: opts.cors
   });
 };
 
@@ -70,6 +75,12 @@ var startWithMBTiles = function(mbtilesFile) {
   }
   var instance = new mbtiles(mbtilesFile, function(err) {
     instance.getInfo(function(err, info) {
+      if (err || !info) {
+        console.log('ERROR: Metadata missing in the MBTiles.');
+        console.log('       Make sure ' + path.basename(mbtilesFile) +
+                    ' is valid MBTiles.');
+        process.exit(1);
+      }
       var bounds = info.bounds;
 
       var styleDir = path.resolve(__dirname, "../node_modules/tileserver-gl-styles/");

src/serve_data.js

@@ -6,9 +6,9 @@ var fs = require('fs'),
 
 var clone = require('clone'),
     express = require('express'),
-    mbtiles = require('mbtiles'),
+    mbtiles = require('@mapbox/mbtiles'),
     pbf = require('pbf'),
-    VectorTile = require('vector-tile').VectorTile;
+    VectorTile = require('@mapbox/vector-tile').VectorTile;
 
 var tileshrinkGl;
 try {
@@ -34,20 +34,24 @@ module.exports = function(options, repo, params, id, styles) {
   if (!mbtilesFileStats.isFile() || mbtilesFileStats.size == 0) {
     throw Error('Not valid MBTiles file: ' + mbtilesFile);
   }
-  var source = new mbtiles(mbtilesFile, function(err) {
-    source.getInfo(function(err, info) {
-      tileJSON['name'] = id;
-      tileJSON['format'] = 'pbf';
+  var source;
+  var sourceInfoPromise = new Promise(function(resolve, reject) {
+    source = new mbtiles(mbtilesFile, function(err) {
+      source.getInfo(function(err, info) {
+        tileJSON['name'] = id;
+        tileJSON['format'] = 'pbf';
 
-      Object.assign(tileJSON, info);
+        Object.assign(tileJSON, info);
 
-      tileJSON['tilejson'] = '2.0.0';
-      delete tileJSON['filesize'];
-      delete tileJSON['mtime'];
-      delete tileJSON['scheme'];
+        tileJSON['tilejson'] = '2.0.0';
+        delete tileJSON['filesize'];
+        delete tileJSON['mtime'];
+        delete tileJSON['scheme'];
 
-      Object.assign(tileJSON, params.tilejson || {});
-      utils.fixTileJSONCenter(tileJSON);
+        Object.assign(tileJSON, params.tilejson || {});
+        utils.fixTileJSONCenter(tileJSON);
+        resolve();
+      });
     });
   });
 
@@ -161,5 +165,9 @@ module.exports = function(options, repo, params, id, styles) {
     return res.send(info);
   });
 
-  return app;
+  return new Promise(function(resolve, reject) {
+    sourceInfoPromise.then(function() {
+      resolve(app);
+    });
+  });
 };

src/serve_font.js

@@ -15,16 +15,19 @@ module.exports = function(options, allowedFonts) {
   var fontPath = options.paths.fonts;
 
   var existingFonts = {};
-  fs.readdir(options.paths.fonts, function(err, files) {
-    files.forEach(function(file) {
-      fs.stat(path.join(fontPath, file), function(err, stats) {
-        if (!err) {
-          if (stats.isDirectory() &&
-              fs.existsSync(path.join(fontPath, file, '0-255.pbf'))) {
-            existingFonts[path.basename(file)] = true;
+  var fontListingPromise = new Promise(function(resolve, reject) {
+    fs.readdir(options.paths.fonts, function(err, files) {
+      files.forEach(function(file) {
+        fs.stat(path.join(fontPath, file), function(err, stats) {
+          if (!err) {
+            if (stats.isDirectory() &&
+                fs.existsSync(path.join(fontPath, file, '0-255.pbf'))) {
+              existingFonts[path.basename(file)] = true;
+            }
           }
-        }
+        });
       });
+      resolve();
     });
   });
 
@@ -33,19 +36,15 @@ module.exports = function(options, allowedFonts) {
     var fontstack = decodeURI(req.params.fontstack);
     var range = req.params.range;
 
-    return utils.getFontsPbf(options.serveAllFonts ? null : allowedFonts,
-      fontPath, fontstack, range, existingFonts,
-        function(err, concated) {
-      if (err || concated.length === 0) {
-        console.log(err);
-        console.log(concated.length);
-        return res.status(400).send('');
-      } else {
+    utils.getFontsPbf(options.serveAllFonts ? null : allowedFonts,
+      fontPath, fontstack, range, existingFonts).then(function(concated) {
         res.header('Content-type', 'application/x-protobuf');
         res.header('Last-Modified', lastModified);
         return res.send(concated);
+      }, function(err) {
+        return res.status(400).send(err);
       }
-    });
+    );
   });
 
   app.get('/fonts.json', function(req, res, next) {
@@ -55,5 +54,9 @@ module.exports = function(options, allowedFonts) {
     );
   });
 
-  return app;
+  return new Promise(function(resolve, reject) {
+    fontListingPromise.then(function() {
+      resolve(app);
+    });
+  });
 };

src/serve_rendered.js

@@ -1,7 +1,6 @@
 'use strict';
 
-var async = require('async'),
-    advancedPool = require('advanced-pool'),
+var advancedPool = require('advanced-pool'),
     fs = require('fs'),
     path = require('path'),
     util = require('util'),
@@ -17,7 +16,7 @@ var Canvas = require('canvas'),
     express = require('express'),
     mercator = new (require('@mapbox/sphericalmercator'))(),
     mbgl = require('@mapbox/mapbox-gl-native'),
-    mbtiles = require('mbtiles'),
+    mbtiles = require('@mapbox/mbtiles'),
     pngquant = require('node-pngquant-native'),
     proj4 = require('proj4'),
     request = require('request');
@@ -59,15 +58,18 @@ module.exports = function(options, repo, params, id, dataResolver) {
   };
 
   var existingFonts = {};
-  fs.readdir(options.paths.fonts, function(err, files) {
-    files.forEach(function(file) {
-      fs.stat(path.join(options.paths.fonts, file), function(err, stats) {
-        if (!err) {
-          if (stats.isDirectory()) {
-            existingFonts[path.basename(file)] = true;
+  var fontListingPromise = new Promise(function(resolve, reject) {
+    fs.readdir(options.paths.fonts, function(err, files) {
+      files.forEach(function(file) {
+        fs.stat(path.join(options.paths.fonts, file), function(err, stats) {
+          if (!err) {
+            if (stats.isDirectory()) {
+              existingFonts[path.basename(file)] = true;
+            }
           }
-        }
+        });
       });
+      resolve();
     });
   });
 
@@ -89,9 +91,12 @@ module.exports = function(options, repo, params, id, dataResolver) {
             var parts = req.url.split('/');
             var fontstack = unescape(parts[2]);
             var range = parts[3].split('.')[0];
-            utils.getFontsPbf(null, options.paths[protocol], fontstack, range, existingFonts,
-                function(err, concated) {
-              callback(err, {data: concated});
+            utils.getFontsPbf(
+              null, options.paths[protocol], fontstack, range, existingFonts
+            ).then(function(concated) {
+              callback(null, {data: concated});
+            }, function(err) {
+              callback(err, {data: null});
             });
           } else if (protocol == 'mbtiles') {
             var parts = req.url.split('/');
@@ -166,7 +171,7 @@ module.exports = function(options, repo, params, id, dataResolver) {
     });
   };
 
-  var styleJSONPath = path.join(options.paths.styles, styleFile);
+  var styleJSONPath = path.resolve(options.paths.styles, styleFile);
   styleJSON = clone(require(styleJSONPath));
 
   var httpTester = /^(http(s)?:)?\/\//;
@@ -218,12 +223,12 @@ module.exports = function(options, repo, params, id, dataResolver) {
         }
         mbtilesFile = dataResolver(mbtilesFile);
         if (!mbtilesFile) {
-          console.log('ERROR: data "' + mbtilesFile + '" not found!');
+          console.error('ERROR: data "' + mbtilesFile + '" not found!');
           process.exit(1);
         }
       }
 
-      queue.push(function(callback) {
+      queue.push(new Promise(function(resolve, reject) {
         mbtilesFile = path.resolve(options.paths.mbtiles, mbtilesFile);
         var mbtilesFileStats = fs.statSync(mbtilesFile);
         if (!mbtilesFileStats.isFile() || mbtilesFileStats.size == 0) {
@@ -233,6 +238,7 @@ module.exports = function(options, repo, params, id, dataResolver) {
           map.sources[name].getInfo(function(err, info) {
             if (err) {
               console.error(err);
+              return;
             }
 
             if (!dataProjWGStoInternalWGS && info.proj4) {
@@ -279,14 +285,14 @@ module.exports = function(options, repo, params, id, dataResolver) {
               }
               tileJSON.attribution += source.attribution;
             }
-            callback(null);
+            resolve();
           });
         });
-      });
+      }));
     }
   });
 
-  async.parallel(queue, function(err, results) {
+  var renderersReadyPromise = Promise.all(queue).then(function() {
     // TODO: make pool sizes configurable
     for (var s = 1; s <= maxScaleFactor; s++) {
       var minPoolSize = 2;
@@ -304,17 +310,19 @@ module.exports = function(options, repo, params, id, dataResolver) {
 
   repo[id] = tileJSON;
 
-  var tilePattern = '/rendered/:z(\\d+)/:x(\\d+)/:y(\\d+)' +
+  var tilePattern = '/' + id + '/:z(\\d+)/:x(\\d+)/:y(\\d+)' +
                     ':scale(' + scalePattern + ')?\.:format([\\w]+)';
 
   var respondImage = function(z, lon, lat, bearing, pitch,
                               width, height, scale, format, res, next,
                               opt_overlay) {
-    if (Math.abs(lon) > 180 || Math.abs(lat) > 85.06) {
+    if (Math.abs(lon) > 180 || Math.abs(lat) > 85.06 ||
+        lon != lon || lat != lat) {
       return res.status(400).send('Invalid center');
     }
     if (Math.min(width, height) <= 0 ||
-        Math.max(width, height) * scale > (options.maxSize || 2048)) {
+        Math.max(width, height) * scale > (options.maxSize || 2048) ||
+        width != width || height != height) {
       return res.status(400).send('Invalid size');
     }
     if (format == 'png' || format == 'webp') {
@@ -341,7 +349,10 @@ module.exports = function(options, repo, params, id, dataResolver) {
       }
       renderer.render(params, function(err, data) {
         pool.release(renderer);
-        if (err) console.log(err);
+        if (err) {
+          console.error(err);
+          return;
+        }
 
         var image = sharp(data, {
           raw: {
@@ -466,9 +477,19 @@ module.exports = function(options, repo, params, id, dataResolver) {
       return [px[0] * scale, px[1] * scale];
     };
 
+    var center = precisePx([x, y], z);
+
+    var mapHeight = 512 * (1 << z);
+    var maxEdge = center[1] + h / 2;
+    var minEdge = center[1] - h / 2;
+    if (maxEdge > mapHeight) {
+      center[1] -= (maxEdge - mapHeight);
+    } else if (minEdge < 0) {
+      center[1] -= minEdge;
+    }
+
     var canvas = new Canvas(scale * w, scale * h);
     var ctx = canvas.getContext('2d');
-    var center = precisePx([x, y], z);
     ctx.scale(scale, scale);
     if (bearing) {
       ctx.translate(w / 2, h / 2);
@@ -523,7 +544,7 @@ module.exports = function(options, repo, params, id, dataResolver) {
 
   if (options.serveStaticMaps !== false) {
     var staticPattern =
-        '/static/:raw(raw)?/%s/:width(\\d+)x:height(\\d+)' +
+        '/' + id + '/static/:raw(raw)?/%s/:width(\\d+)x:height(\\d+)' +
         ':scale(' + scalePattern + ')?\.:format([\\w]+)';
 
     var centerPattern =
@@ -564,14 +585,11 @@ module.exports = function(options, repo, params, id, dataResolver) {
                           res, next, overlay);
     });
 
-    var boundsPattern =
-        util.format(':minx(%s),:miny(%s),:maxx(%s),:maxy(%s)',
-                    FLOAT_PATTERN, FLOAT_PATTERN, FLOAT_PATTERN, FLOAT_PATTERN);
-
-    app.get(util.format(staticPattern, boundsPattern), function(req, res, next) {
+    var serveBounds = function(req, res, next) {
       var raw = req.params.raw;
       var bbox = [+req.params.minx, +req.params.miny,
                   +req.params.maxx, +req.params.maxy];
+      var center = [(bbox[0] + bbox[2]) / 2, (bbox[1] + bbox[3]) / 2];
 
       var transformer = raw ?
         mercator.inverse.bind(mercator) : dataProjWGStoInternalWGS;
@@ -583,6 +601,7 @@ module.exports = function(options, repo, params, id, dataResolver) {
         bbox[1] = minCorner[1];
         bbox[2] = maxCorner[0];
         bbox[3] = maxCorner[1];
+        center = transformer(center);
       }
 
       var w = req.params.width | 0,
@@ -591,8 +610,8 @@ module.exports = function(options, repo, params, id, dataResolver) {
           format = req.params.format;
 
       var z = calcZForBBox(bbox, w, h, req.query),
-          x = (bbox[0] + bbox[2]) / 2,
-          y = (bbox[1] + bbox[3]) / 2,
+          x = center[0],
+          y = center[1],
           bearing = 0,
           pitch = 0;
 
@@ -601,6 +620,34 @@ module.exports = function(options, repo, params, id, dataResolver) {
                                   path, req.query);
       return respondImage(z, x, y, bearing, pitch, w, h, scale, format,
                           res, next, overlay);
+    };
+
+    var boundsPattern =
+        util.format(':minx(%s),:miny(%s),:maxx(%s),:maxy(%s)',
+                    FLOAT_PATTERN, FLOAT_PATTERN, FLOAT_PATTERN, FLOAT_PATTERN);
+
+    app.get(util.format(staticPattern, boundsPattern), serveBounds);
+
+    app.get('/' + id + '/static/', function(req, res, next) {
+      for (var key in req.query) {
+        req.query[key.toLowerCase()] = req.query[key];
+      }
+      req.params.raw = true;
+      req.params.format = (req.query.format || 'image/png').split('/').pop();
+      var bbox = (req.query.bbox || '').split(',');
+      req.params.minx = bbox[0];
+      req.params.miny = bbox[1];
+      req.params.maxx = bbox[2];
+      req.params.maxy = bbox[3];
+      req.params.width = req.query.width || '256';
+      req.params.height = req.query.height || '256';
+      if (req.query.scale) {
+        req.params.width /= req.query.scale;
+        req.params.height /= req.query.scale;
+        req.params.scale = '@' + req.query.scale;
+      }
+
+      return serveBounds(req, res, next);
     });
 
     var autoPattern = 'auto';
@@ -630,9 +677,14 @@ module.exports = function(options, repo, params, id, dataResolver) {
         bbox[3] = Math.max(bbox[3], pair[1]);
       });
 
+      var bbox_ = mercator.convert(bbox, '900913');
+      var center = mercator.inverse(
+        [(bbox_[0] + bbox_[2]) / 2, (bbox_[1] + bbox_[3]) / 2]
+      );
+
       var z = calcZForBBox(bbox, w, h, req.query),
-          x = (bbox[0] + bbox[2]) / 2,
-          y = (bbox[1] + bbox[3]) / 2;
+          x = center[0],
+          y = center[1];
 
       var overlay = renderOverlay(z, x, y, bearing, pitch, w, h, scale,
                                   path, req.query);
@@ -642,12 +694,16 @@ module.exports = function(options, repo, params, id, dataResolver) {
     });
   }
 
-  app.get('/rendered.json', function(req, res, next) {
+  app.get('/' + id + '.json', function(req, res, next) {
     var info = clone(tileJSON);
     info.tiles = utils.getTileUrls(req, info.tiles,
-                                   'styles/' + id + '/rendered', info.format);
+                                   'styles/' + id, info.format);
     return res.send(info);
   });
 
-  return app;
+  return new Promise(function(resolve, reject) {
+    Promise.all([fontListingPromise, renderersReadyPromise]).then(function() {
+      resolve(app);
+    });
+  });
 };

src/serve_style.js

@@ -10,7 +10,7 @@ var clone = require('clone'),
 module.exports = function(options, repo, params, id, reportTiles, reportFont) {
   var app = express().disable('x-powered-by');
 
-  var styleFile = path.join(options.paths.styles, params.style);
+  var styleFile = path.resolve(options.paths.styles, params.style);
 
   var styleJSON = clone(require(styleFile));
   Object.keys(styleJSON.sources).forEach(function(name) {
@@ -62,7 +62,7 @@ module.exports = function(options, repo, params, id, reportTiles, reportFont) {
 
   repo[id] = styleJSON;
 
-  app.get('/' + id + '.json', function(req, res, next) {
+  app.get('/' + id + '/style.json', function(req, res, next) {
     var fixUrl = function(url, opt_nokey, opt_nostyle) {
       if (!url || (typeof url !== 'string') || url.indexOf('local://') !== 0) {
         return url;
@@ -117,5 +117,5 @@ module.exports = function(options, repo, params, id, reportTiles, reportFont) {
     });
   });
 
-  return app;
+  return Promise.resolve(app);
 };

src/server.js

@@ -10,6 +10,7 @@ var fs = require('fs'),
 var base64url = require('base64url'),
     clone = require('clone'),
     cors = require('cors'),
+    enableShutdown = require('http-shutdown'),
     express = require('express'),
     handlebars = require('handlebars'),
     mercator = new (require('@mapbox/sphericalmercator'))(),
@@ -28,7 +29,7 @@ if (!isLight) {
   serve_rendered = require('./serve_rendered');
 }
 
-module.exports = function(opts, callback) {
+function start(opts) {
   console.log('Starting server');
 
   var app = express().disable('x-powered-by'),
@@ -41,10 +42,9 @@ module.exports = function(opts, callback) {
 
   app.enable('trust proxy');
 
-  callback = callback || function() {};
-
-  if (process.env.NODE_ENV !== 'production' &&
-      process.env.NODE_ENV !== 'test') {
+  if (process.env.NODE_ENV == 'production') {
+    app.use(morgan('tiny'));
+  } else if (process.env.NODE_ENV !== 'test') {
     app.use(morgan('dev'));
   }
 
@@ -76,6 +76,8 @@ module.exports = function(opts, callback) {
   paths.sprites = path.resolve(paths.root, paths.sprites || '');
   paths.mbtiles = path.resolve(paths.root, paths.mbtiles || '');
 
+  var startupPromises = [];
+
   var checkPath = function(type) {
     if (!fs.existsSync(paths[type])) {
       console.error('The specified path for "' + type + '" does not exist (' + paths[type] + ').');
@@ -89,7 +91,9 @@ module.exports = function(opts, callback) {
 
   var data = clone(config.data || {});
 
-  app.use(cors());
+  if (opts.cors) {
+    app.use(cors());
+  }
 
   Object.keys(config.styles || {}).forEach(function(id) {
     var item = config.styles[id];
@@ -99,7 +103,7 @@ module.exports = function(opts, callback) {
     }
 
     if (item.serve_data !== false) {
-      app.use('/styles/', serve_style(options, serving.styles, item, id,
+      startupPromises.push(serve_style(options, serving.styles, item, id,
         function(mbtiles, fromData) {
           var dataItemId;
           Object.keys(data).forEach(function(id) {
@@ -128,28 +132,38 @@ module.exports = function(opts, callback) {
           }
         }, function(font) {
           serving.fonts[font] = true;
+        }).then(function(sub) {
+          app.use('/styles/', sub);
         }));
     }
     if (item.serve_rendered !== false) {
       if (serve_rendered) {
-        app.use('/styles/' + id + '/',
-                serve_rendered(options, serving.rendered, item, id,
-        function(mbtiles) {
-          var mbtilesFile;
-          Object.keys(data).forEach(function(id) {
-            if (id == mbtiles) {
-              mbtilesFile = data[id].mbtiles;
+        startupPromises.push(
+          serve_rendered(options, serving.rendered, item, id,
+            function(mbtiles) {
+              var mbtilesFile;
+              Object.keys(data).forEach(function(id) {
+                if (id == mbtiles) {
+                  mbtilesFile = data[id].mbtiles;
+                }
+              });
+              return mbtilesFile;
             }
-          });
-          return mbtilesFile;
-        }));
+          ).then(function(sub) {
+            app.use('/styles/', sub);
+          })
+        );
       } else {
         item.serve_rendered = false;
       }
     }
   });
 
-  app.use('/', serve_font(options, serving.fonts));
+  startupPromises.push(
+    serve_font(options, serving.fonts).then(function(sub) {
+      app.use('/', sub);
+    })
+  );
 
   Object.keys(data).forEach(function(id) {
     var item = data[id];
@@ -158,7 +172,11 @@ module.exports = function(opts, callback) {
       return;
     }
 
-    app.use('/data/', serve_data(options, serving.data, item, id, serving.styles));
+    startupPromises.push(
+      serve_data(options, serving.data, item, id, serving.styles).then(function(sub) {
+        app.use('/data/', sub);
+      })
+    );
   });
 
   app.get('/styles.json', function(req, res, next) {
@@ -171,7 +189,7 @@ module.exports = function(opts, callback) {
         name: styleJSON.name,
         id: id,
         url: req.protocol + '://' + req.headers.host +
-             '/styles/' + id + '.json' + query
+             '/styles/' + id + '/style.json' + query
       });
     });
     res.send(result);
@@ -182,7 +200,7 @@ module.exports = function(opts, callback) {
       var info = clone(serving[type][id]);
       var path = '';
       if (type == 'rendered') {
-        path = 'styles/' + id + '/rendered';
+        path = 'styles/' + id;
       } else {
         path = type + '/' + id;
       }
@@ -219,28 +237,32 @@ module.exports = function(opts, callback) {
         templateFile = path.resolve(paths.root, options.frontPage);
       }
     }
-    fs.readFile(templateFile, function(err, content) {
-      if (err) {
-        console.error('Template not found:', err);
-      }
-      var compiled = handlebars.compile(content.toString());
-
-      app.use(urlPath, function(req, res, next) {
-        var data = {};
-        if (dataGetter) {
-          data = dataGetter(req);
-          if (!data) {
-            return res.status(404).send('Not found');
-          }
+    startupPromises.push(new Promise(function(resolve, reject) {
+      fs.readFile(templateFile, function(err, content) {
+        if (err) {
+          console.error('Template not found:', err);
+          reject(err);
         }
-        data['server_version'] = packageJson.name + ' v' + packageJson.version;
-        data['is_light'] = isLight;
-        data['key_query_part'] =
-            req.query.key ? 'key=' + req.query.key + '&' : '';
-        data['key_query'] = req.query.key ? '?key=' + req.query.key : '';
-        return res.status(200).send(compiled(data));
+        var compiled = handlebars.compile(content.toString());
+
+        app.use(urlPath, function(req, res, next) {
+          var data = {};
+          if (dataGetter) {
+            data = dataGetter(req);
+            if (!data) {
+              return res.status(404).send('Not found');
+            }
+          }
+          data['server_version'] = packageJson.name + ' v' + packageJson.version;
+          data['is_light'] = isLight;
+          data['key_query_part'] =
+              req.query.key ? 'key=' + req.query.key + '&' : '';
+          data['key_query'] = req.query.key ? '?key=' + req.query.key : '';
+          return res.status(200).send(compiled(data));
+        });
+        resolve();
       });
-    });
+    }));
   };
 
   serveTemplate('/$', 'index', function(req) {
@@ -266,11 +288,11 @@ module.exports = function(opts, callback) {
         var query = req.query.key ? ('?key=' + req.query.key) : '';
         style.wmts_link = 'http://wmts.maptiler.com/' +
           base64url('http://' + req.headers.host +
-            '/styles/' + id + '/rendered.json' + query) + '/wmts';
+            '/styles/' + id + '.json' + query) + '/wmts';
 
         var tiles = utils.getTileUrls(
             req, style.serving_rendered.tiles,
-            'styles/' + id + '/rendered', style.serving_rendered.format);
+            'styles/' + id, style.serving_rendered.format);
         style.xyz_link = tiles[0];
       }
     });
@@ -353,20 +375,57 @@ module.exports = function(opts, callback) {
     return data;
   });
 
+  var startupComplete = false;
+  var startupPromise = Promise.all(startupPromises).then(function() {
+    console.log('Startup complete');
+    startupComplete = true;
+  });
+  app.get('/health', function(req, res, next) {
+    if (startupComplete) {
+      return res.status(200).send('OK');
+    } else {
+      return res.status(503).send('Starting');
+    }
+  });
+
   var server = app.listen(process.env.PORT || opts.port, process.env.BIND || opts.bind, function() {
-    console.log('Listening at http://%s:%d/',
-                this.address().address, this.address().port);
-
-    return callback();
+    var address = this.address().address;
+    if (address.indexOf('::') === 0) {
+      address = '[' + address + ']'; // literal IPv6 address
+    }
+    console.log('Listening at http://%s:%d/', address, this.address().port);
   });
 
-  process.on('SIGINT', function() {
-      process.exit();
-  });
+  // add server.shutdown() to gracefully stop serving
+  enableShutdown(server);
 
-  setTimeout(callback, 1000);
   return {
     app: app,
-    server: server
+    server: server,
+    startupPromise: startupPromise
   };
+}
+
+module.exports = function(opts) {
+  var running = start(opts);
+
+  process.on('SIGINT', function() {
+    process.exit();
+  });
+
+  process.on('SIGHUP', function() {
+    console.log('Stopping server and reloading config');
+
+    running.server.shutdown(function() {
+      for (var key in require.cache) {
+        delete require.cache[key];
+      }
+
+      var restarted = start(opts);
+      running.server = restarted.server;
+      running.app = restarted.app;
+    });
+  });
+
+  return running;
 };

src/utils.js

@@ -1,7 +1,6 @@
 'use strict';
 
-var async = require('async'),
-    path = require('path'),
+var path = require('path'),
     fs = require('fs');
 
 var clone = require('clone'),
@@ -73,47 +72,47 @@ module.exports.fixTileJSONCenter = function(tileJSON) {
   }
 };
 
-module.exports.getFontsPbf = function(allowedFonts, fontPath, names, range, fallbacks, callback) {
-  var getFontPbf = function(allowedFonts, name, range, callback, fallbacks) {
+var getFontPbf = function(allowedFonts, fontPath, name, range, fallbacks) {
+  return new Promise(function(resolve, reject) {
     if (!allowedFonts || (allowedFonts[name] && fallbacks)) {
       var filename = path.join(fontPath, name, range + '.pbf');
       if (!fallbacks) {
         fallbacks = clone(allowedFonts || {});
       }
       delete fallbacks[name];
-      return fs.readFile(filename, function(err, data) {
+      fs.readFile(filename, function(err, data) {
         if (err) {
           console.error('ERROR: Font not found:', name);
           if (fallbacks && Object.keys(fallbacks).length) {
             var fallbackName = Object.keys(fallbacks)[0];
             console.error('ERROR: Trying to use', fallbackName, 'as a fallback');
             delete fallbacks[fallbackName];
-            return getFontPbf(null, fallbackName, range, callback, fallbacks);
+            getFontPbf(null, fontPath, fallbackName, range, fallbacks).then(resolve, reject);
           } else {
-            return callback(new Error('Font load error: ' + name));
+            reject('Font load error: ' + name);
           }
         } else {
-          return callback(null, data);
+          resolve(data);
         }
       });
     } else {
-      return callback(new Error('Font not allowed: ' + name));
-    }
-  };
-
-  var fonts = names.split(',');
-  var queue = [];
-  fonts.forEach(function(font) {
-    queue.push(function(callback) {
-      getFontPbf(allowedFonts, font, range, callback, clone(allowedFonts || fallbacks));
-    });
-  });
-
-  return async.parallel(queue, function(err, results) {
-    if (err) {
-      callback(err, new Buffer([]));
-    } else {
-      callback(err, glyphCompose.combine(results));
+      reject('Font not allowed: ' + name);
     }
   });
 };
+
+module.exports.getFontsPbf = function(allowedFonts, fontPath, names, range, fallbacks) {
+  var fonts = names.split(',');
+  var queue = [];
+  fonts.forEach(function(font) {
+    queue.push(
+      getFontPbf(allowedFonts, fontPath, font, range, clone(allowedFonts || fallbacks))
+    );
+  });
+
+  return new Promise(function(resolve, reject) {
+    Promise.all(queue).then(function(values) {
+      return resolve(glyphCompose.combine(values));
+    }, reject);
+  });
+};

test/metadata.js

@@ -38,6 +38,14 @@ var testTileJSON = function(url) {
 };
 
 describe('Metadata', function() {
+  describe('/health', function() {
+    it('returns 200', function(done) {
+      supertest(app)
+        .get('/health')
+        .expect(200, done);
+    });
+  });
+
   testTileJSONArray('/index.json');
   testTileJSONArray('/rendered.json');
   testTileJSONArray('/data.json');
@@ -63,6 +71,6 @@ describe('Metadata', function() {
     });
   });
 
-  testTileJSON('/styles/test-style/rendered.json');
+  testTileJSON('/styles/test-style.json');
   testTileJSON('/data/openmaptiles.json');
 });

test/setup.js

@@ -12,6 +12,7 @@ before(function() {
   });
   global.app = running.app;
   global.server = running.server;
+  return running.startupPromise;
 });
 
 after(function() {

test/style.js

@@ -11,12 +11,12 @@ var testIs = function(url, type, status) {
 var prefix = 'test-style';
 
 describe('Styles', function() {
-  describe('/styles/' + prefix + '.json is valid style', function() {
-    testIs('/styles/' + prefix + '.json', /application\/json/);
+  describe('/styles/' + prefix + '/style.json is valid style', function() {
+    testIs('/styles/' + prefix + '/style.json', /application\/json/);
 
     it('contains expected properties', function(done) {
       supertest(app)
-        .get('/styles/' + prefix + '.json')
+        .get('/styles/' + prefix + '/style.json')
         .expect(function(res) {
           res.body.version.should.equal(8);
           res.body.name.should.be.String();
@@ -27,8 +27,8 @@ describe('Styles', function() {
         }).end(done);
     });
   });
-  describe('/styles/streets.json is not served', function() {
-    testIs('/styles/streets.json', /./, 404);
+  describe('/styles/streets/style.json is not served', function() {
+    testIs('/styles/streets/style.json', /./, 404);
   });
 
   describe('/styles/' + prefix + '/sprite[@2x].{format}', function() {

test/tiles_rendered.js

@@ -1,6 +1,6 @@
 var testTile = function(prefix, z, x, y, format, status, scale, type) {
   if (scale) y += '@' + scale + 'x';
-  var path = '/styles/' + prefix + '/rendered/' + z + '/' + x + '/' + y + '.' + format;
+  var path = '/styles/' + prefix + '/' + z + '/' + x + '/' + y + '.' + format;
   it(path + ' returns ' + status, function(done) {
     var test = supertest(app).get(path);
     test.expect(status);