From 82d3162fb40a3a1ec3f84d421da18d9e053225c2 Mon Sep 17 00:00:00 2001
From: Alessio Biancalana <dottorblaster@gmail.com>
Date: Thu, 20 Jan 2022 18:22:57 +0100
Subject: [PATCH] Add a live feed implementation for host registration (#81)

---
 assets/js/components/Home/Home.jsx     | 68 ++++++++++++++++++++++++++
 assets/js/components/Home/index.js     |  3 ++
 assets/js/components/HostsList.jsx     |  6 +--
 assets/js/components/Layout/Layout.jsx |  8 +--
 assets/js/state/hosts.js               | 18 ++++---
 assets/js/state/index.js               |  6 ++-
 assets/js/state/liveFeed.js            | 22 +++++++++
 assets/js/state/sagas/index.js         | 27 ++++++++--
 assets/js/tronto.jsx                   |  2 +-
 assets/tailwind.config.js              |  9 ++++
 10 files changed, 147 insertions(+), 22 deletions(-)
 create mode 100644 assets/js/components/Home/Home.jsx
 create mode 100644 assets/js/components/Home/index.js
 create mode 100644 assets/js/state/liveFeed.js

diff --git a/assets/js/components/Home/Home.jsx b/assets/js/components/Home/Home.jsx
new file mode 100644
index 0000000000..124c5d76da
--- /dev/null
+++ b/assets/js/components/Home/Home.jsx
@@ -0,0 +1,68 @@
+import React from 'react';
+import { useSelector } from 'react-redux';
+
+const Home = () => {
+  const liveFeed = useSelector((state) => state.liveFeed.entries);
+  const hosts = useSelector((state) => state.hostsList.hosts);
+  const hostsNumber = hosts.length;
+
+  return (
+    <div className="container px-4">
+      <div className="">
+        <div className="max-w-xs py-4 px-8 bg-white shadow rounded-lg my-2">
+          <div>
+            <h2 className="text-gray-600">Hosts</h2>
+            <p className="mt-2 text-gray-800 text-3xl font-semibold">
+              {hostsNumber}
+            </p>
+          </div>
+        </div>
+      </div>
+      <div className="flex flex-col mt-16">
+        <div className="-my-2 overflow-x-auto sm:-mx-6 lg:-mx-8">
+          <div className="py-2 align-middle inline-block min-w-full sm:px-6 lg:px-8">
+            <div className="shadow overflow-hidden border-b border-gray-200 sm:rounded-lg">
+              <table className="min-w-full divide-y divide-gray-200">
+                <thead className="bg-gray-50">
+                  <tr>
+                    <th
+                      scope="col"
+                      className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider"
+                    >
+                      Time
+                    </th>
+                    <th
+                      scope="col"
+                      className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider"
+                    >
+                      Source
+                    </th>
+                    <th
+                      scope="col"
+                      className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider"
+                    >
+                      Message
+                    </th>
+                  </tr>
+                </thead>
+                <tbody className="bg-white divide-y divide-gray-200">
+                  {liveFeed.map(({ time, source, message }) => (
+                    <tr key={time} className="animate-fade">
+                      <td className="px-6 py-4 whitespace-nowrap">
+                        <div className="content-center">{time}</div>
+                      </td>
+                      <td className="px-6 py-4 whitespace-nowrap">{source}</td>
+                      <td className="px-6 py-4 whitespace-nowrap">{message}</td>
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default Home;
diff --git a/assets/js/components/Home/index.js b/assets/js/components/Home/index.js
new file mode 100644
index 0000000000..fbe3fed6bf
--- /dev/null
+++ b/assets/js/components/Home/index.js
@@ -0,0 +1,3 @@
+import Home from './Home';
+
+export default Home;
diff --git a/assets/js/components/HostsList.jsx b/assets/js/components/HostsList.jsx
index 9748c13d73..66281f2bb1 100644
--- a/assets/js/components/HostsList.jsx
+++ b/assets/js/components/HostsList.jsx
@@ -1,9 +1,7 @@
 import React from 'react';
 import { useSelector } from 'react-redux';
 
-import {
-  EOS_LENS_FILLED,
-} from 'eos-icons-react';
+import { EOS_LENS_FILLED } from 'eos-icons-react';
 
 const getHeartbeatIcon = ({ heartbeat }) => {
   switch (heartbeat) {
@@ -55,7 +53,7 @@ const HostsList = () => {
               </thead>
               <tbody className="bg-white divide-y divide-gray-200">
                 {hosts.map((host) => (
-                  <tr key={host.id}>
+                  <tr key={host.id} className="animate-fade">
                     <td className="px-6 py-4 whitespace-nowrap">
                       <div className="content-center">
                         {getHeartbeatIcon(host)}
diff --git a/assets/js/components/Layout/Layout.jsx b/assets/js/components/Layout/Layout.jsx
index c9955dea2f..74e895ad53 100644
--- a/assets/js/components/Layout/Layout.jsx
+++ b/assets/js/components/Layout/Layout.jsx
@@ -11,7 +11,7 @@ import {
   EOS_CLUSTER_ROLE,
 } from 'eos-icons-react';
 
-import TrentoLogo from '../../../static/trento-logo-stacked.svg'
+import TrentoLogo from '../../../static/trento-logo-stacked.svg';
 
 const classNames = (...classes) => classes.filter(Boolean).join(' ');
 
@@ -93,11 +93,7 @@ const Layout = () => {
                 </div>
               </Transition.Child>
               <div className="flex-shrink-0 flex items-center px-4">
-                <img
-                  className="h-8 w-auto"
-                  src={TrentoLogo}
-                  alt="Workflow"
-                />
+                <img className="h-8 w-auto" src={TrentoLogo} alt="Workflow" />
               </div>
               <div className="mt-5 flex-1 h-0 overflow-y-auto">
                 <nav className="px-2 space-y-1">
diff --git a/assets/js/state/hosts.js b/assets/js/state/hosts.js
index 56726aa2de..ef38a32523 100644
--- a/assets/js/state/hosts.js
+++ b/assets/js/state/hosts.js
@@ -5,7 +5,6 @@ const initialState = {
   hosts: [],
 };
 
-
 export const hostsListSlice = createSlice({
   name: 'hostsList',
   initialState,
@@ -19,7 +18,7 @@ export const hostsListSlice = createSlice({
     updateHost: (state, action) => {
       state.hosts = state.hosts.map((host) => {
         if (host.id === action.payload.id) {
-          host = { ...host, ...action.payload }
+          host = { ...host, ...action.payload };
         }
         return host;
       });
@@ -27,7 +26,7 @@ export const hostsListSlice = createSlice({
     setHeartbeatPassing: (state, action) => {
       state.hosts = state.hosts.map((host) => {
         if (host.id === action.payload.id) {
-          host.heartbeat = "passing";
+          host.heartbeat = 'passing';
         }
         return host;
       });
@@ -35,7 +34,7 @@ export const hostsListSlice = createSlice({
     setHeartbeatCritical: (state, action) => {
       state.hosts = state.hosts.map((host) => {
         if (host.id === action.payload.id) {
-          host.heartbeat = "critical";
+          host.heartbeat = 'critical';
         }
         return host;
       });
@@ -49,7 +48,14 @@ export const hostsListSlice = createSlice({
   },
 });
 
-export const { setHosts, appendHost, updateHost, startLoading, stopLoading, setHeartbeatPassing, setHeartbeatCritical } =
-  hostsListSlice.actions;
+export const {
+  setHosts,
+  appendHost,
+  updateHost,
+  startLoading,
+  stopLoading,
+  setHeartbeatPassing,
+  setHeartbeatCritical,
+} = hostsListSlice.actions;
 
 export default hostsListSlice.reducer;
diff --git a/assets/js/state/index.js b/assets/js/state/index.js
index 6ddaceef24..d87c12aa90 100644
--- a/assets/js/state/index.js
+++ b/assets/js/state/index.js
@@ -3,6 +3,7 @@ import createSagaMiddleware from 'redux-saga';
 import { Socket } from 'phoenix';
 
 import hostsListReducer from './hosts';
+import liveFeedReducer from './liveFeed';
 
 import rootSaga from './sagas';
 
@@ -11,6 +12,7 @@ const sagaMiddleware = createSagaMiddleware();
 export const store = configureStore({
   reducer: {
     hostsList: hostsListReducer,
+    liveFeed: liveFeedReducer,
   },
   middleware: [sagaMiddleware],
 });
@@ -27,8 +29,8 @@ const processChannelEvents = (store) => {
   );
 
   channel.on('host_details_updated', (payload) =>
-  store.dispatch({ type: 'HOST_DETAILS_UPDATED', payload })
-);
+    store.dispatch({ type: 'HOST_DETAILS_UPDATED', payload })
+  );
 
   channel.on('heartbeat_succeded', (payload) =>
     store.dispatch({ type: 'HEARTBEAT_SUCCEDED', payload })
diff --git a/assets/js/state/liveFeed.js b/assets/js/state/liveFeed.js
new file mode 100644
index 0000000000..0eacf84d18
--- /dev/null
+++ b/assets/js/state/liveFeed.js
@@ -0,0 +1,22 @@
+import { createSlice } from '@reduxjs/toolkit';
+
+const initialState = {
+  entries: [],
+};
+
+export const liveFeedSlice = createSlice({
+  name: 'liveFeed',
+  initialState,
+  reducers: {
+    appendEntryToLiveFeed: (state, { payload: { source, message } }) => {
+      const time = Date.now();
+      const newEntry = { time, source, message };
+      const entries = [newEntry, ...state.entries];
+      state.entries = entries;
+    },
+  },
+});
+
+export const { appendEntryToLiveFeed } = liveFeedSlice.actions;
+
+export default liveFeedSlice.reducer;
diff --git a/assets/js/state/sagas/index.js b/assets/js/state/sagas/index.js
index 692604d546..917e43bd26 100644
--- a/assets/js/state/sagas/index.js
+++ b/assets/js/state/sagas/index.js
@@ -1,8 +1,16 @@
 import { get } from 'axios';
 import { put, all, call, takeEvery } from 'redux-saga/effects';
 
-import { appendHost, setHosts, updateHost, startLoading, stopLoading, setHeartbeatPassing, setHeartbeatCritical }
-  from '../hosts';
+import {
+  appendHost,
+  setHosts,
+  updateHost,
+  startLoading,
+  stopLoading,
+  setHeartbeatPassing,
+  setHeartbeatCritical,
+} from '../hosts';
+import { appendEntryToLiveFeed } from '../liveFeed';
 import { watchNotifications } from './notifications';
 
 const notify = ({ text, icon }) => ({
@@ -19,6 +27,12 @@ function* initialDataFetch() {
 
 function* hostRegistered({ payload }) {
   yield put(appendHost(payload));
+  yield put(
+    appendEntryToLiveFeed({
+      source: payload.hostname,
+      message: 'New host registered.',
+    })
+  );
   yield put(
     notify({
       text: `A new host, ${payload.hostname}, has been discovered.`,
@@ -68,5 +82,12 @@ function* watchHeartbeatFailed() {
 }
 
 export default function* rootSaga() {
-  yield all([initialDataFetch(), watchHostRegistered(), watchHostDetailsUpdated(), watchHeartbeatSucceded(), watchHeartbeatFailed(), watchNotifications()]);
+  yield all([
+    initialDataFetch(),
+    watchHostRegistered(),
+    watchHostDetailsUpdated(),
+    watchHeartbeatSucceded(),
+    watchHeartbeatFailed(),
+    watchNotifications(),
+  ]);
 }
diff --git a/assets/js/tronto.jsx b/assets/js/tronto.jsx
index a5b0017752..11f7c70f57 100644
--- a/assets/js/tronto.jsx
+++ b/assets/js/tronto.jsx
@@ -9,9 +9,9 @@ import { Provider } from 'react-redux';
 import { store } from './state';
 
 import Layout from './components/Layout';
+import Home from './components/Home';
 import HostsList from './components/HostsList';
 
-const Home = () => <h1>HOME HERE</h1>;
 const ClustersList = () => <h1>CLUSTERS LIST</h1>;
 
 const App = () => {
diff --git a/assets/tailwind.config.js b/assets/tailwind.config.js
index 444cab0e23..5bbf7407a7 100644
--- a/assets/tailwind.config.js
+++ b/assets/tailwind.config.js
@@ -2,6 +2,15 @@ module.exports = {
   content: ['./js/**/*.{js,jsx}', '../lib/*_web/**/*.*ex'],
   theme: {
     extend: {
+      animation: {
+        fade: 'fadeIn 0.5s ease-in-out',
+      },
+      keyframes: (theme) => ({
+        fadeIn: {
+          '0%': { opacity: '0%' },
+          '100%': { opacity: '100%' },
+        },
+      }),
       colors: {
         'pine-green': '#0C322C',
         'jungle-green': {