Add script to show a single log entry

scripts/show-log.js

@@ -0,0 +1,46 @@
+require('isomorphic-fetch')
+const invariant = require('invariant')
+
+const CloudflareEmail = process.env.CLOUDFLARE_EMAIL
+const CloudflareKey = process.env.CLOUDFLARE_KEY
+const RayID = process.argv[2]
+
+invariant(
+  CloudflareEmail,
+  'Missing the $CLOUDFLARE_EMAIL environment variable'
+)
+
+invariant(
+  CloudflareKey,
+  'Missing the $CLOUDFLARE_KEY environment variable'
+)
+
+invariant(
+  RayID,
+  'Missing the RAY_ID argument; use `heroku run node show-log.js RAY_ID`'
+)
+
+const getZones = (domain) =>
+  fetch(`https://api.cloudflare.com/client/v4/zones?name=${domain}`, {
+    method: 'GET',
+    headers: {
+      'X-Auth-Email': CloudflareEmail,
+      'X-Auth-Key': CloudflareKey
+    }
+  }).then(res => res.json())
+    .then(data => data.result)
+
+const getLog = (zoneId, rayId) =>
+  fetch(`https://api.cloudflare.com/client/v4/zones/${zoneId}/logs/requests/${rayId}`, {
+    method: 'GET',
+    headers: {
+      'X-Auth-Email': CloudflareEmail,
+      'X-Auth-Key': CloudflareKey
+    }
+  }).then(res => res.status === 404 ? 'NOT FOUND' : res.json())
+
+getZones('unpkg.com').then(zones => {
+  getLog(zones[0].id, RayID).then(entry => {
+    console.log(entry)
+  })
+})