comp review todo app update (#146)

* new todo frontend

* yarn --> npm

* basic Dockerfile

* add Helm chart for todo list

* backend working

* connect new-app'd frontend to backend via proxy_pass

* move nginx conf

* move nginx conf back

* move helm chart to course repo

* add simple SSR node.js service

* log error message

* fix host typo

* fix dockerfiles

* add link to items page

* improve probe route for todo-backend

* canary probe route for todo-backend

* Dockerfile -> Containerfile todo-backend

* Dockerfile -> Containerfile todo-frontend

* remove commands for containerfile as part of comp review

todo-ssr/.gitignore

@@ -0,0 +1,104 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port

todo-ssr/README.md

@@ -0,0 +1 @@
+# todo-ssr

todo-ssr/index.js

@@ -0,0 +1,30 @@
+const express = require("express");
+const axios = require("axios");
+
+const port = Number(process.env.PORT || 8080);
+const apiHost = process.env.API_HOST || "localhost:3000";
+
+const app = express();
+
+app.set("view engine", "pug");
+
+app.get("/", (req, res) => {
+  res.render("index", { title: "Hello", message: "Page message" });
+});
+
+app.get("/items", async (req, res) => {
+  try {
+    const items = await axios
+      .get(`${apiHost}/api/items`)
+      .then((response) => response.data);
+    console.log("items:", items);
+    res.render("items", { items });
+  } catch (err) {
+    console.error(err);
+    res.status(500).send(err.message);
+  }
+});
+
+app.listen(port, () => {
+  console.log("Express server started on port: " + port);
+});

todo-ssr/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "todo-ssr",
+  "private": true,
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "license": "MIT",
+  "dependencies": {
+    "axios": "^0.21.1",
+    "express": "^4.17.1",
+    "pug": "^3.0.2"
+  }
+}

todo-ssr/views/index.pug

@@ -0,0 +1,6 @@
+html
+  head
+    title= title
+  body
+    h1= message
+    a(href="/items") To Do List

todo-ssr/views/items.pug

@@ -0,0 +1,11 @@
+html
+  head
+    title Todo Items
+  body
+    h1 Todo List
+    p Note that this version is non-interactive
+    ul
+      each item in items
+        li
+          input(type="checkbox" disabled="disabled" checked=item.done ? "checked" : "")
+          span= item.description