Rename server => modules

modules/createServer.js

@@ -0,0 +1,74 @@
+const http = require("http");
+const express = require("express");
+const morgan = require("morgan");
+
+const staticAssets = require("./middleware/staticAssets");
+const createRouter = require("./createRouter");
+
+morgan.token("fwd", req => {
+  return req.get("x-forwarded-for").replace(/\s/g, "");
+});
+
+function errorHandler(err, req, res, next) {
+  console.error(err.stack);
+
+  res
+    .status(500)
+    .type("text")
+    .send("Internal Server Error");
+
+  next(err);
+}
+
+function createServer(publicDir, statsFile) {
+  const app = express();
+
+  app.disable("x-powered-by");
+
+  if (process.env.NODE_ENV !== "test") {
+    app.use(
+      morgan(
+        // Modified version of Heroku's log format
+        // https://devcenter.heroku.com/articles/http-routing#heroku-router-log-format
+        'method=:method path=":url" host=:req[host] request_id=:req[x-request-id] cf_ray=:req[cf-ray] fwd=:fwd status=:status bytes=:res[content-length]'
+      )
+    );
+  }
+
+  app.use(errorHandler);
+
+  if (publicDir) {
+    app.use(express.static(publicDir, { maxAge: "365d" }));
+  }
+
+  if (statsFile) {
+    app.use(staticAssets(statsFile));
+  }
+
+  app.use(createRouter());
+
+  const server = http.createServer(app);
+
+  // Heroku dynos automatically timeout after 30s. Set our
+  // own timeout here to force sockets to close before that.
+  // https://devcenter.heroku.com/articles/request-timeout
+  server.setTimeout(25000, socket => {
+    const message = `Timeout of 25 seconds exceeded`;
+
+    socket.end(
+      [
+        "HTTP/1.1 503 Service Unavailable",
+        "Date: " + new Date().toGMTString(),
+        "Content-Length: " + Buffer.byteLength(message),
+        "Content-Type: text/plain",
+        "Connection: close",
+        "",
+        message
+      ].join("\r\n")
+    );
+  });
+
+  return server;
+}
+
+module.exports = createServer;