chore(perf): save only failed days to KV storage

config.yaml

@@ -1,6 +1,7 @@
 settings:
   title: "Status Page"
-  logo: logo-192x192.png
+  url: "https://status-page.eidam.dev" # for Slack messages
+  logo: logo-192x192.png # image in ./public/ folder
   daysInHistogram: 90
 
   allmonitorsOperational: "All Systems Operational"
@@ -8,7 +9,9 @@ settings:
   monitorLabelOperational: "Operational"
   monitorLabelNotOperational: "Not great not terrible"
   monitorLabelNoData: "No data"
-
+  dayInHistogramNoData: "No data"
+  dayInHistogramOperational: "All good"
+  dayInHistogramNotOperational: "Some checks failed"
 
 monitors:
   - id: kiwi-com-homepage
@@ -71,13 +74,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: google-com-2
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
-
   - id: cf-workers-status-page-2
     name: This Workers Status Page project made public
     description: /shrug
@@ -114,13 +110,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: google-com-22
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
-
   - id: cf-workers-status-page-22
     name: This Workers Status Page project made public
     description: /shrug
@@ -146,7 +135,7 @@ monitors:
     name: Hello World
     url: 'http://cnn.cn/'
     method: GET
-    expectStatus: 200
+    expectStatus: 201
 
 
   - id: eidam-dev-333
@@ -156,13 +145,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: google-com-333
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
-
   - id: cf-workers-status-page-333
     name: This Workers Status Page project made public
     description: /shrug
@@ -206,13 +188,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: 25-google-com
-    name: Bing.com
-    description: Bing homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
-
   - id: 25-cf-workers-status-page
     name: This Workers Status Page project made public
     description: /shrug
@@ -251,12 +226,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: 25-google-com-2
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
 
   - id: 25-cf-workers-status-page-2
     name: This Workers Status Page project made public
@@ -294,13 +263,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: 25-google-com-22
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
-
   - id: 25-cf-workers-status-page-22
     name: This Workers Status Page project made public
     description: /shrug
@@ -336,12 +298,6 @@ monitors:
     method: GET
     expectStatus: 403
 
-  - id: 25-google-com-333
-    name: Google.com
-    description: Google homepage
-    url: 'https://www.google.com'
-    method: GET
-    expectStatus: 200
 
   - id: 25-cf-workers-status-page-333
     name: This Workers Status Page project made public

pages/index.js

@@ -24,6 +24,8 @@ export async function getEdgeProps() {
     if (x.metadata.operational === false) monitorsOperational = false
   })
 
+  console.log(JSON.stringify(kvMonitorsMap))
+
   // transform KV list to array of failed days
   const kvMonitorsFailedDaysArray = kvMonitorsFailedDays.map(x => {
     return x.name
@@ -79,9 +81,13 @@ export default function Index({
                 ? config.settings.allmonitorsOperational
                 : config.settings.notAllmonitorsOperational}
             </div>
-            <div className="black-text">
-              checked {Math.round((Date.now() - kvLastUpdate) / 1000)} sec ago
-            </div>
+            {typeof window !== 'undefined' ? (
+              <div className="black-text">
+                checked {Math.round((Date.now() - kvLastUpdate) / 1000)} sec ago
+              </div>
+            ) : (
+              ''
+            )}
           </div>
         </div>
         {config.monitors.map((monitor, key) => {

src/components/monitorHistogram.js

@@ -15,22 +15,22 @@ export default function MonitorHistogram({
         key={`${monitor.id}-histogram`}
         className="horizontal flex histogram"
       >
-        {Array.from(Array(config.settings.daysInHistogram + 1).keys()).map(key => {
+        {Array.from(Array(config.settings.daysInHistogram).keys()).map(key => {
           date.setDate(date.getDate() + 1)
-          const dayInHistory = date.toISOString().split('T')[0]
-          const dayInHistoryKey = 'h_' + monitor.id + '_' + dayInHistory
+          const dayInHistogram = date.toISOString().split('T')[0]
+          const dayInHistogramKey = 'h_' + monitor.id + '_' + dayInHistogram
 
           let bg = ''
-          let dayInHistoryStatus = 'No data'
+          let dayInHistogramLabel = config.settings.dayInHistogramNoData
 
           // filter all dates before first check, check the rest
-          if (kvMonitor && kvMonitor.firstCheck <= dayInHistory) {
-            if (!kvMonitorsFailedDaysArray.includes(dayInHistoryKey)) {
+          if (kvMonitor && kvMonitor.firstCheck <= dayInHistogram) {
+            if (!kvMonitorsFailedDaysArray.includes(dayInHistogramKey)) {
               bg = 'green'
-              dayInHistoryStatus = 'No outage recorded'
+              dayInHistogramLabel = config.settings.dayInHistogramOperational
             } else {
               bg = 'orange'
-              dayInHistoryStatus = 'Some outages'
+              dayInHistogramLabel = config.settings.dayInHistogramNotOperational
             }
           }
 
@@ -38,7 +38,7 @@ export default function MonitorHistogram({
             <div key={key} className="hitbox">
               <div
                 className={`${bg} bar`}
-                data-tooltip={`${dayInHistory} - ${dayInHistoryStatus}`}
+                data-tooltip={`${dayInHistogram} - ${dayInHistogramLabel}`}
               />
             </div>
           )

src/components/monitorStatusLabel.js

@@ -1,3 +1,5 @@
+import config from '../../config.yaml'
+
 export default function MonitorStatusLabel({ kvMonitorsMap, monitor }) {
   let labelColor = 'grey'
   let labelText = 'No data'
@@ -5,10 +7,10 @@ export default function MonitorStatusLabel({ kvMonitorsMap, monitor }) {
   if (typeof kvMonitorsMap[monitor.id] !== 'undefined') {
     if (kvMonitorsMap[monitor.id].operational) {
       labelColor = 'green'
-      labelText = 'Operational'
+      labelText = config.settings.monitorLabelOperational
     } else {
       labelColor = 'orange'
-      labelText = 'Not great not terrible'
+      labelText = config.settings.monitorLabelNotOperational
     }
   }
 

src/functions/cronTrigger.js

@@ -1,6 +1,12 @@
 import config from '../../config.yaml'
 
-import { setKV, getKVWithMetadata, gcMonitors, getKV } from './helpers'
+import {
+  setKV,
+  getKVWithMetadata,
+  gcMonitors,
+  getKV,
+  notifySlack,
+} from './helpers'
 
 function getDate() {
   return new Date().toISOString().split('T')[0]
@@ -14,7 +20,7 @@ export async function processCronTrigger(event) {
       method: monitor.method || 'GET',
       redirect: monitor.followRedirect ? 'follow' : 'manual',
       headers: {
-        'User-Agent': 'cf-worker-status-page',
+        'User-Agent': config.settings.user_agent || 'cf-worker-status-page',
       },
     }
 
@@ -28,29 +34,32 @@ export async function processCronTrigger(event) {
       firstCheck: kvState.metadata ? kvState.metadata.firstCheck : getDate(),
     }
 
-    // Write current status if status changed or for first time
+    // write current status if status changed or for first time
     if (
       !kvState.metadata ||
       kvState.metadata.operational !== newMetadata.operational
     ) {
       console.log('Saving changed state..')
 
-      await setKV('s_' + monitor.id, null, newMetadata)
-
-      if (typeof SECRET_SLACK_WEBHOOK !== 'undefined') {
+      // first try to notify Slack in case fetch() or other limit is reached
+      if (typeof SECRET_SLACK_WEBHOOK_URL !== 'undefined') {
         await notifySlack(monitor, newMetadata)
       }
 
-      if (!newMetadata.operational) {
-        // try to get failed daily status first as KV read is cheaper than write
-        const kvFailedDayStatusKey = 'h_' + monitor.id + '_' + getDate()
-        const kvFailedDayStatus = await getKV(kvFailedDayStatusKey)
+      await setKV('s_' + monitor.id, null, newMetadata)
+    }
 
-        // write if not found
-        if (!kvFailedDayStatus) {
-          console.log('Saving new failed daily status..')
-          await setKV(kvFailedDayStatusKey, null)
-        }
+    // write daily status if monitor is not operational
+    if (!newMetadata.operational) {
+      // try to get failed daily status first as KV read is cheaper than write
+      const kvFailedDayStatusKey = 'h_' + monitor.id + '_' + getDate()
+      console.log(kvFailedDayStatusKey)
+      const kvFailedDayStatus = await getKV(kvFailedDayStatusKey)
+
+      // write if not found
+      if (!kvFailedDayStatus) {
+        console.log('Saving new failed daily status..')
+        await setKV(kvFailedDayStatusKey, null)
       }
     }
 

src/functions/helpers.js

@@ -1,3 +1,5 @@
+import config from '../../config.yaml'
+
 export async function getMonitors() {
   const monitors = await listKV('s_')
   return monitors.keys
@@ -73,18 +75,42 @@ export async function gcMonitors(config) {
   })
 }
 
-async function notifySlack(monitor, metadata) {
-  const blocks = [
-    {
-      type: 'section',
-      text: {
-        type: 'mrkdwn',
-        text: `Some monitor is now in :this: status`,
+export async function notifySlack(monitor, newMetadata) {
+  const payload = {
+    attachments: [
+      {
+        color: newMetadata.operational ? '#36a64f' : '#f2c744',
+        blocks: [
+          {
+            type: 'section',
+            text: {
+              type: 'mrkdwn',
+              text: `Monitor *${monitor.name}* changed status to *${
+                newMetadata.operational
+                  ? config.settings.monitorLabelOperational
+                  : config.settings.monitorLabelNotOperational
+              }*`,
+            },
+          },
+          {
+            type: 'context',
+            elements: [
+              {
+                type: 'mrkdwn',
+                text: `${
+                  newMetadata.operational ? ':white_check_mark:' : ':x:'
+                } \`${monitor.method} ${monitor.url}\` - :eyes: <${
+                  config.settings.url
+                }|Status Page>`,
+              },
+            ],
+          },
+        ],
       },
-    },
-  ]
+    ],
+  }
   return fetch(SECRET_SLACK_WEBHOOK_URL, {
-    body: JSON.stringify({ blocks }),
+    body: JSON.stringify(payload),
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
   })