Added sample code for javascript/rest-api part 1

Author: Dan McGhan

javascript/README.md

@@ -4,3 +4,4 @@ This directory contains Oracle Database JavaScript examples for:
 
 - JavaScript on the JVM using the Nashorn engine (Hotspot JDk or JRE, other Java SE 8 compliant VMs, OJVM).
 - node-oracledb for Node.js, allowing you to write mid-tier and networking applications in JavaScript.
+- Creating a REST API with Node.js and Oracle Database.

javascript/rest-api/README.md

@@ -0,0 +1,3 @@
+# Creating a REST API with Node.js and Oracle Database
+
+This folder contains sample code from the [Creating a REST API with Node.js and Oracle Database](https://jsao.io/2018/03/creating-a-rest-api-with-node-js-and-oracle-database/) blog series. See that post for more details.

javascript/rest-api/part-1-web-server-basics/hr_app/config/web-server.js

@@ -0,0 +1,3 @@
+module.exports = {
+  port: process.env.HTTP_PORT || 3000
+};

javascript/rest-api/part-1-web-server-basics/hr_app/index.js

@@ -0,0 +1,59 @@
+const webServer = require('./services/web-server.js');
+
+async function startup() {
+  console.log('Starting application');
+
+  try {
+    console.log('Starting web server');
+
+    await webServer.start(); 
+  } catch (err) {
+    console.error(err);
+
+    process.exit(1); // Non-zero failure code
+  }
+}
+
+startup();
+
+async function shutdown(e) {
+  let err = e;
+    
+  console.log('Shutting down');
+
+  try {
+    console.log('Closing web server');
+
+    await webServer.stop();
+  } catch (e) {
+    console.log('Encountered error', e);
+
+    err = err || e;
+  }
+
+  console.log('Exiting process');
+
+  if (err) {
+    process.exit(1);
+  } else {
+    process.exit(0);
+  }
+}
+
+process.on('SIGTERM', () => {
+  console.log('Received SIGTERM');
+
+  shutdown();
+});
+
+process.on('SIGINT', () => {
+  console.log('Received SIGINT');
+
+  shutdown();
+});
+
+process.on('uncaughtException', err => {
+  console.log('Uncaught exception', err);
+
+  shutdown(err);
+});