start work on producer

sensors/deploy.sh

+#!/bin/bash
+set -e
+
+wsk=$1
+
+pushd $(dirname $0)/producer
+zip -ru ../producer.zip * || true
+popd
+for i in {0..1}; do
+     $wsk -i action update producer$i $(dirname $0)/producer.zip --param id $i --kind nodejs:8
+done
+

sensors/producer/index.js

+const { Kafka, logLevel } = require('kafkajs')
+
+async function main({id}) {
+  const kafka = new Kafka({
+    clientId: 'producer',
+    brokers: ['ark-01.srvs.cloudkafka.com:9094', 'ark-02.srvs.cloudkafka.com:9094', 'ark-03.srvs.cloudkafka.com:9094'],
+    ssl: true,
+    sasl: {
+      mechanism: 'scram-sha-256',
+      username: 'mra5q18k',
+      password: 'SddBJrfRgVWkWYCYhaw-J_5pDDDamZsS'
+    }
+  });
+
+  let date = Date.now()
+  let value = Math.floor(Math.random() * 41)
+
+  const producer = kafka.producer()
+  await producer.connect()
+  await producer.send({
+    topic: 'mra5q18k-sensors',
+    messages: [{
+      key: null,
+      value: `{producer: ${id}, timestamp: ${date}, value: ${value}}`}]
+  })
+  await producer.disconnect()
+
+  return {};
+}
+
+exports.main = main;

sensors/producer/package-lock.json

+{
+  "name": "producer",
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "kafkajs": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/kafkajs/-/kafkajs-1.4.4.tgz",
+      "integrity": "sha512-f+cYW9QSkCsThY5qlzAKTedF9WpyNq+mzGZF/4lx2OJwqFkOHyMaqXgp2ILcIJZ+8O7fo7uqxuH9ODoJqy5BfQ==",
+      "requires": {
+        "long": "^4.0.0"
+      },
+      "dependencies": {
+        "long": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
+          "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA=="
+        }
+      }
+    }
+  }
+}

sensors/producer/package.json

+{
+  "name": "producer",
+  "main": "index.js",
+  "dependencies": {
+    "kafkajs": "*"
+  }
+}