Merge pull request #229 from hypothesis/package-content-server

Add an express server which serves the package's contents.

Merge pull request #229 from hypothesis/package-content-server
Add an express server which serves the package's contents.
e743717c · Nick Stenning · GitHub · 5b836627 · 3782856c · e743717c
Commit e743717c authored Feb 28, 2017 by Nick Stenning Committed by GitHub Feb 28, 2017
6 changed files
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -22,6 +22,7 @@ var through = require('through2');
 var createBundle = require('./scripts/gulp/create-bundle');
 var manifest = require('./scripts/gulp/manifest');
+var servePackage = require('./scripts/gulp/serve-package');
 var vendorBundles = require('./scripts/gulp/vendor-bundles');
 var IS_PRODUCTION_BUILD = process.env.NODE_ENV === 'production';
@@ -240,6 +241,19 @@ function triggerLiveReload(changedFiles) {
  debouncedLiveReload();
 }
+/**
+ * Return the hostname that should be used when generating URLs to the package
+ * content server.
+ *
+ * Customizing this can be useful when testing the client on different devices
+ * than the one the package content server is running on.
+ */
+function packageServerHostname() {
+  return process.env.PACKAGE_SERVER_HOSTNAME || 'localhost';
+}
+var isFirstBuild = true;
 /**
 * Generates the `build/boot.js` script which serves as the entry point for
 * the Hypothesis client.
@@ -247,8 +261,29 @@ function triggerLiveReload(changedFiles) {
 * @param {Object} manifest - Manifest mapping asset paths to cache-busted URLs
 */
 function generateBootScript(manifest) {
+  var { version } = require('./package.json');
+  var defaultSidebarAppUrl = process.env.H_SERVICE_URL ?
+    `${process.env.H_SERVICE_URL}/app.html` : 'https://hypothes.is/app.html';
+  var defaultAssetRoot;
+  if (process.env.NODE_ENV === 'production') {
+    defaultAssetRoot = `https://cdn.hypothes.is/hypothesis/${version}/`;
+  } else {
+    defaultAssetRoot = `http://${packageServerHostname()}:3001/hypothesis/${version}/`;
+  }
+  if (isFirstBuild) {
+    gulpUtil.log(`Sidebar app URL: ${defaultSidebarAppUrl}`);
+    gulpUtil.log(`Client asset root URL: ${defaultAssetRoot}`);
+    isFirstBuild = false;
+  }
  gulp.src('build/scripts/boot.bundle.js')
    .pipe(replace('__MANIFEST__', JSON.stringify(manifest)))
+    .pipe(replace('__ASSET_ROOT__', defaultAssetRoot))
+    .pipe(replace('__SIDEBAR_APP_URL__', defaultSidebarAppUrl))
    .pipe(rename('boot.js'))
    .pipe(gulp.dest('build/'));
 }
@@ -261,8 +296,6 @@ function generateManifest() {
  gulp.src(MANIFEST_SOURCE_FILES)
    .pipe(manifest({name: 'manifest.json'}))
    .pipe(through.obj(function (file, enc, callback) {
-      gulpUtil.log('Updated asset manifest');
      // Trigger a reload of the client in the dev server at localhost:3000
      var newManifest = JSON.parse(file.contents.toString());
      var changed = changedAssets(prevManifest, newManifest);
@@ -286,9 +319,15 @@ gulp.task('watch-manifest', function () {
  }));
 });
-gulp.task('start-live-reload-server', function () {
+gulp.task('serve-live-reload', ['serve-package'], function () {
  var LiveReloadServer = require('./scripts/gulp/live-reload-server');
-  liveReloadServer = new LiveReloadServer(3000, 'http://localhost:5000');
+  liveReloadServer = new LiveReloadServer(3000, {
+    clientUrl: `http://${packageServerHostname()}:3001/hypothesis`,
+  });
+});
+gulp.task('serve-package', function () {
+  servePackage(3001, packageServerHostname());
 });
 gulp.task('build',
@@ -299,7 +338,8 @@ gulp.task('build',
          generateManifest);
 gulp.task('watch',
-          ['start-live-reload-server',
+          ['serve-package',
+           'serve-live-reload',
           'watch-js',
           'watch-css',
           'watch-fonts',

--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -216,6 +216,12 @@
      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.1.tgz",
      "dev": true
    },
+    "array-flatten": {
+      "version": "1.1.1",
+      "from": "array-flatten@1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "dev": true
+    },
    "array-index": {
      "version": "1.0.0",
      "from": "array-index@>=1.0.0 <2.0.0",
@@ -1306,6 +1312,12 @@
      "resolved": "https://registry.npmjs.org/constants-browserify/-/constants-browserify-1.0.0.tgz",
      "dev": true
    },
+    "content-disposition": {
+      "version": "0.5.2",
+      "from": "content-disposition@0.5.2",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
+      "dev": true
+    },
    "content-type": {
      "version": "1.0.2",
      "from": "content-type@>=1.0.2 <1.1.0",
@@ -1318,6 +1330,18 @@
      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.2.0.tgz",
      "dev": true
    },
+    "cookie": {
+      "version": "0.3.1",
+      "from": "cookie@0.3.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
+      "dev": true
+    },
+    "cookie-signature": {
+      "version": "1.0.6",
+      "from": "cookie-signature@1.0.6",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+      "dev": true
+    },
    "core-js": {
      "version": "1.2.6",
      "from": "core-js@>=1.2.5 <2.0.0",
@@ -1496,6 +1520,12 @@
      "resolved": "https://registry.npmjs.org/des.js/-/des.js-1.0.0.tgz",
      "dev": true
    },
+    "destroy": {
+      "version": "1.0.4",
+      "from": "destroy@>=1.0.4 <1.1.0",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
+      "dev": true
+    },
    "detect-indent": {
      "version": "3.0.1",
      "from": "detect-indent@>=3.0.0 <4.0.0",
@@ -1681,6 +1711,12 @@
      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.2.3.tgz",
      "dev": true
    },
+    "encodeurl": {
+      "version": "1.0.1",
+      "from": "encodeurl@>=1.0.1 <1.1.0",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.1.tgz",
+      "dev": true
+    },
    "end-of-stream": {
      "version": "1.1.0",
      "from": "end-of-stream@>=1.1.0 <2.0.0",
@@ -1936,6 +1972,12 @@
      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
      "dev": true
    },
+    "etag": {
+      "version": "1.7.0",
+      "from": "etag@>=1.7.0 <1.8.0",
+      "resolved": "https://registry.npmjs.org/etag/-/etag-1.7.0.tgz",
+      "dev": true
+    },
    "event-emitter": {
      "version": "0.3.4",
      "from": "event-emitter@>=0.3.4 <0.4.0",
@@ -2068,6 +2110,56 @@
        }
      }
    },
+    "express": {
+      "version": "4.14.1",
+      "from": "express@latest",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.14.1.tgz",
+      "dev": true,
+      "dependencies": {
+        "accepts": {
+          "version": "1.3.3",
+          "from": "accepts@>=1.3.3 <1.4.0",
+          "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
+          "dev": true
+        },
+        "finalhandler": {
+          "version": "0.5.1",
+          "from": "finalhandler@0.5.1",
+          "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-0.5.1.tgz",
+          "dev": true
+        },
+        "mime-db": {
+          "version": "1.26.0",
+          "from": "mime-db@>=1.26.0 <1.27.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.26.0.tgz",
+          "dev": true
+        },
+        "mime-types": {
+          "version": "2.1.14",
+          "from": "mime-types@>=2.1.11 <2.2.0",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.14.tgz",
+          "dev": true
+        },
+        "negotiator": {
+          "version": "0.6.1",
+          "from": "negotiator@0.6.1",
+          "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.1.tgz",
+          "dev": true
+        },
+        "statuses": {
+          "version": "1.3.1",
+          "from": "statuses@>=1.3.1 <1.4.0",
+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
+          "dev": true
+        },
+        "type-is": {
+          "version": "1.6.14",
+          "from": "type-is@>=1.6.14 <1.7.0",
+          "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.14.tgz",
+          "dev": true
+        }
+      }
+    },
    "extend": {
      "version": "2.0.1",
      "from": "extend@>=2.0.0 <3.0.0",
@@ -2110,210 +2202,1045 @@
          "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
          "dev": true
        },
        "mkdirp": {
          "version": "0.5.0",
          "from": "mkdirp@0.5.0",
          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.0.tgz",
+          "dev": true
+        },
+        "readable-stream": {
+          "version": "2.0.6",
+          "from": "readable-stream@>=2.0.0 <2.1.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.0.6.tgz",
+          "dev": true
+        }
+      }
+    },
+    "extsprintf": {
+      "version": "1.0.2",
+      "from": "extsprintf@1.0.2",
+      "resolved": "http://registry.npmjs.org/extsprintf/-/extsprintf-1.0.2.tgz",
+      "dev": true
+    },
+    "falafel": {
+      "version": "1.2.0",
+      "from": "falafel@>=1.0.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/falafel/-/falafel-1.2.0.tgz",
+      "dev": true
+    },
+    "fancy-log": {
+      "version": "1.2.0",
+      "from": "fancy-log@>=1.1.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/fancy-log/-/fancy-log-1.2.0.tgz",
+      "dev": true
+    },
+    "fast-levenshtein": {
+      "version": "1.1.3",
+      "from": "fast-levenshtein@>=1.1.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-1.1.3.tgz",
+      "dev": true
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+    "fd-slicer": {
+      "version": "1.0.1",
+      "from": "fd-slicer@>=1.0.1 <1.1.0",
+      "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.0.1.tgz",
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+    "figures": {
+      "version": "1.7.0",
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@@ -2937,6 +3864,12 @@
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@@ -3829,6 +4762,12 @@
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@@ -4513,6 +5452,12 @@
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@@ -4635,6 +5580,12 @@
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@@ -4717,6 +5668,12 @@
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@@ -4753,6 +5710,12 @@
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@@ -5202,6 +6165,44 @@
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@@ -5214,6 +6215,12 @@
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@@ -6161,7 +7174,7 @@
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--- a/package.json
+++ b/package.json
@@ -43,6 +43,7 @@
    "eslint": "^3.0.1",
    "eslint-config-hypothesis": "^1.0.0",
    "exorcist": "^0.4.0",
+    "express": "^4.14.1",
    "extend": "^2.0.0",
    "gulp": "^3.9.1",
    "gulp-batch": "^1.0.5",

--- a/scripts/gulp/live-reload-server.js
+++ b/scripts/gulp/live-reload-server.js
@@ -9,6 +9,11 @@ function changelogText() {
  return fs.readFileSync('./README.md', 'utf-8');
 }
+/**
+ * @typedef Config
+ * @property {string} clientUrl - The URL of the client's boot script
+ */
 /**
 * An HTTP and WebSocket server which enables live reloading of the client.
 *
@@ -18,12 +23,11 @@ function changelogText() {
 * the client to live-reload.
 *
 * @param {number} port - The port that the test server should listen on.
- * @param {string} appServer - The URL of the Hypothesis service to load
+ * @param {Config} config - Config for the server
- *                             the client from.
 *
 * @constructor
 */
-function LiveReloadServer(port, appServer) {
+function LiveReloadServer(port, config) {
  var connections = [];
  function listen() {
@@ -60,7 +64,7 @@ function LiveReloadServer(port, appServer) {
      });
      var embedScript = document.createElement('script');
-      embedScript.src = '${appServer}/embed.js'.replace('localhost', appHost);
+      embedScript.src = '${config.clientUrl}';
      document.body.appendChild(embedScript);
      </script>
    </body>

--- a/scripts/gulp/serve-package.js
+++ b/scripts/gulp/serve-package.js
+'use strict';
+var { readFileSync } = require('fs');
+var express = require('express');
+var { log } = require('gulp-util');
+var { version } = require('../../package.json');
+/**
+ * An express server which serves the contents of the package.
+ *
+ * The server mirrors the URL structure of cdn.hypothes.is, an S3-backed domain
+ * which serves the client's assets in production.
+ *
+ * When developing the client, the Hypothesis service should be configured to
+ * use the URL of this service as the client URL, so that the boot script is
+ * returned by the service's '/embed.js' route and included in the '/app.html'
+ * app.
+ */
+function servePackage(port, hostname) {
+  var app = express();
+  var serveBootScript = function (req, res) {
+    var entryPath = require.resolve('../..');
+    var entryScript = readFileSync(entryPath).toString('utf-8');
+    res.send(entryScript);
+  };
+  // Set up URLs which serve the boot script and package content, mirroring
+  // cdn.hypothes.is' structure.
+  app.get('/hypothesis', serveBootScript);
+  app.get(`/hypothesis/${version}`, serveBootScript);
+  app.use(`/hypothesis/${version}/`, express.static('.'));
+  app.listen(port, function () {
+    log(`Package served at http://${hostname}:${port}/hypothesis`);
+  });
+}
+module.exports = servePackage;
--- a/src/boot/index.js
+++ b/src/boot/index.js
@@ -7,19 +7,15 @@
 // already has it cached when it encounters the reference in the sidebar
 // application.
+// Variables replaced by the build script
 /* global __MANIFEST__ */
 var boot = require('./boot');
 var settings = require('../shared/settings')(document);
-// The `sidebarAppUrl` and `assetRoot` settings are set by the service which is
-// serving the Hypothesis client to tell it where to load the sidebar and assets
-// from.
-var defaultAssetRoot = 'https://cdn.hypothes.is/hypothesis/__VERSION__/';
 boot(document, {
-  assetRoot: settings.assetRoot || defaultAssetRoot,
+  assetRoot: settings.assetRoot || '__ASSET_ROOT__',
-  manifest: __MANIFEST__,  // Replaced by build script
+  manifest: __MANIFEST__,
-  sidebarAppUrl: settings.sidebarAppUrl || 'https://hypothes.is/app.html',
+  sidebarAppUrl: settings.sidebarAppUrl || '__SIDEBAR_APP_URL__',
 });