K8s changes (#55)

* K8S: dont send OPTIONS pings

* fix missing ref

* k8s pre-stop hook added

* k8s pre-stop hook changes

* chmod +x utility

* more k8s pre-stop changes

* pre stop

* fix healthcheck

* k8s pre-stop working

* add readiness probe

* fix bug in pre-stop

* logging

* revamp k8s pre-stop a bit

* initial support for cognigy bot

* more cognigy changes

* switch to use transcribe for cognigy

* #54 include callInfo in dialogflow event payload

bin/k8s-pre-stop-hook.js

@@ -0,0 +1,29 @@
+#!/usr/bin/env node
+const bent = require('bent');
+const getJSON = bent('json');
+const PORT = process.env.HTTP_PORT || 3000;
+
+const sleep = (ms) => {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+};
+
+(async function() {
+
+  try {
+    do {
+      const obj = await getJSON(`http://127.0.0.1:${PORT}/`);
+      const {calls} = obj;
+      if (calls === 0) {
+        console.log('no calls on the system, we can exit');
+        process.exit(0);
+      }
+      else {
+        console.log(`waiting for ${calls} to exit..`);
+      }
+      await sleep(10000);
+    } while (1);
+  } catch (err) {
+    console.error(err, 'Error querying health endpoint');
+    process.exit(-1);
+  }
+})();