feat: 天地图缓存增加默认 key 防止泄露问题、新增地形数据缓存

.eslintrc

 {
+  "parserOptions": {
+    "ecmaVersion": 2021,
+    "sourceType": "module"
+  },
   "env": {
     "node": true,
     "es6": true

app/services/index.js

@@ -5,6 +5,7 @@ const sprites = require('./sprites')
 const fonts = require('./fonts')
 const assets = require('./assets')
 const tdt = require('./tdt')
+const terrain = require('./terrain')
 
 const router = express.Router()
 
@@ -14,5 +15,6 @@ router.use(sprites)
 router.use(fonts)
 router.use(assets)
 router.use(tdt)
+router.use(terrain)
 
 module.exports = router

app/services/tdt/controller.js

@@ -44,7 +44,7 @@ function downloadFile(url, filepath) {
 }
 
 module.exports.cache = async (req, res, next) => {
-  const { id, x, y, z, tk, v = 'DEFAULE' } = req.params
+  const { id, x, y, z, tk = '5e8ccf6c93d1ce905f4e5ba0ce30159a', v = 'DEFAULE' } = req.params
   const host = 't0'
   const uri = `https://${host}.tianditu.gov.cn/${id}_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=${id}&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX=${z}&TILEROW=${y}&TILECOL=${x}&tk=${tk}`
   const src = path.resolve(`./data/cache/tdt/${v}/${id}/${z}/${x}/${y}.png`)

app/services/terrain/controller.js

+const fs = require('fs')
+const path = require('path')
+const https = require('https')
+
+function downloadFile(url, filepath) {
+  if (!fs.existsSync(filepath)) {
+    fs.mkdirSync(path.dirname(filepath), { recursive: true })
+  }
+
+  return new Promise(function (resolve, reject) {
+    //忽略证书认证
+    process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0
+    try {
+      https.get(
+        url,
+        {
+          headers: {
+            'User-Agent':
+              'Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 Edg/102.0.5005.124'
+          }
+        },
+        function (res) {
+          if (res.statusCode === 200) {
+            //使用数据流写入
+            const file = fs.createWriteStream(filepath)
+            file.on('finish', function () {
+              file.close()
+              resolve()
+            })
+            file.on('error', reject)
+            res.pipe(file)
+          } else {
+            res.resume()
+            console.log(`Request Failed With a Status Code: ${res.statusCode}`)
+            reject()
+          }
+        }
+      )
+    } catch (err) {
+      console.log(err)
+      reject()
+    }
+  })
+}
+
+module.exports.cache = async (req, res, next) => {
+  const { x, y, z, v = 'DEFAULE' } = req.params
+  const object = `${x}/${y}/${z}`
+  const uri = `https://data.mars3d.cn/terrain/${object}`
+  const src = path.resolve(`./data/cache/terrain/${v}/${object}`)
+
+  try {
+    if (!fs.existsSync(src)) {
+      await downloadFile(uri, src)
+    }
+  } catch (_) {
+    try {
+      if (fs.existsSync(src)) {
+        fs.rmSync(src)
+      }
+    } catch (__) {}
+  }
+
+  res.sendFile(src, function (err) {
+    if (err) return next(err)
+  })
+}

app/services/terrain/index.js

+const router = require('express').Router()
+const terrain = require('./controller')
+
+router.get('/terrain/cache/:x/:y/:z', terrain.cache)
+
+module.exports = router

data/styles/image.json

+{
+  "version": 8,
+  "zoom": 4,
+  "center": [0, 0],
+  "sources": {
+    "image": {
+      "type": "raster",
+      "url": "/api/tilesets/image/tilejson",
+      "tileSize": 256
+    }
+  },
+  "layers": [
+    {
+      "id": "bg",
+      "type": "background",
+      "paint": { "background-color": "black" }
+    },
+    {
+      "id": "background",
+      "type": "background",
+      "layout": { "visibility": "none" },
+      "paint": { "background-color": "hsla(0, 0%, 0%, 0)" }
+    },
+    {
+      "id": "image",
+      "type": "raster",
+      "source": "image"
+    }
+  ]
+}
\ No newline at end of file

package.json

@@ -9,7 +9,7 @@
     "docs": "docsify serve ./docs --open",
     "test": "tape test/**/*.js",
     "lint": "eslint app/**/*.js",
-    "format": "prettier-eslint --write app/**/*.js",
+    "format": "prettier-eslint -l info --write app/**/*.js",
     "dist": "pkg . --out-path=dist/ --targets=win,linux,macos --compress=GZip",
     "dist:linux": "pkg . --out-path=dist/ --targets=linux --compress=GZip",
     "dist:win": "pkg . --out-path=dist/ --targets=win --compress=GZip"
@@ -23,7 +23,7 @@
     ]
   },
   "lint-staged": {
-    "{app,test}/**/*.js": "prettier-eslint --write"
+    "{test}/**/*.js": "prettier-eslint --write"
   },
   "dependencies": {
     "@mapbox/glyph-pbf-composite": "^0.0.3",