initial commit

dev/tekton/examples/example-bank/bank-knative-service/Dockerfile

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+# Use the official lightweight Node.js 12 image.
+# https://hub.docker.com/_/node
+FROM node:12-slim
+
+# Create and change to the app directory.
+WORKDIR /usr/src/app
+
+# Copy application dependency manifests to the container image.
+# A wildcard is used to ensure both package.json AND package-lock.json are copied.
+# Copying this separately prevents re-running npm install on every code change.
+COPY package*.json ./
+
+# Install production dependencies.
+RUN npm install --only=production
+
+# Copy local code to the container image.
+COPY . ./
+
+# Run the web service on container startup.
+CMD [ "npm", "start" ]

dev/tekton/examples/example-bank/bank-knative-service/deployment.yaml

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+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: process-transaction
+  # local to cluster only
+  labels:
+    serving.knative.dev/visibility: cluster-local
+spec:
+  template:
+    metadata:
+      annotations:
+        # Target 10 requests in-flight per pod.
+        autoscaling.knative.dev/target: "10"
+        # Disable scale to zero with a minScale of 1.
+        # autoscaling.knative.dev/minScale: "1"
+        # Limit scaling to 50 pods.
+        # autoscaling.knative.dev/maxScale: "50"
+    spec:
+      containers:
+        - image: anthonyamanse/knative-transaction-process:with-auth
+          envFrom:
+            - secretRef:
+                name: bank-oidc-adminuser
+            - secretRef:
+                name: mobile-simulator-secrets
+          env:
+            - name: TRANSACTION_SERVICE_URL
+              value: "http://transaction-service:9080/bank/v1/transactions"

dev/tekton/examples/example-bank/bank-knative-service/index.js

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+const express = require('express');
+const app = express();
+const axios = require('axios');
+const qs = require('qs');
+const jwt_decode = require('jwt-decode')
+
+let transactionServiceUrl = process.env.TRANSACTION_SERVICE_URL
+let appIdTokenUrl = process.env.APP_ID_TOKEN_URL
+let appIdClientId = process.env.APP_ID_CLIENT_ID
+let appIdClientSecret = process.env.APP_ID_CLIENT_SECRET
+let appIdAdminUser = process.env.APP_ID_ADMIN_USER
+let appIdAdminPassword = process.env.APP_ID_ADMIN_PASSWORD
+
+let appIdResult;
+
+app.post('/process', (req, res) => {
+  console.log('received request')
+  console.log(req.query)
+  if (!appIdResult) {
+    getAppIdToken(appIdAdminUser, appIdAdminPassword)
+    .then(function (response) {
+      appIdResult = response.data
+      sendToRewardEndpoint(req, res, appIdResult.access_token)
+    })
+    .catch(function (error) {
+      console.log(error)
+      res.status('404').send('Error getting admin token')
+    })
+  } else {
+    console.log('found app id result in global variable')
+    // check if token is expired
+    if (isAccessTokenExpired(appIdResult.access_token)) {
+      console.log('token found is expired. getting new one...')
+      getAppIdToken(appIdAdminUser, appIdAdminPassword)
+        .then(function (response) {
+          appIdResult = response.data
+          sendToRewardEndpoint(req, res, appIdResult.access_token)
+        })
+        .catch(function (error) {
+          console.log(error)
+          res.status('404').send('Error getting admin token')
+        })
+    } else {
+      sendToRewardEndpoint(req, res, appIdResult.access_token)
+    }
+  }
+});
+
+function sendToRewardEndpoint(req, res, authToken) {
+  if (req.query.transactionId && req.query.category && req.query.amount) {
+    let pointsEarned = computeReward(req.query.category, req.query.amount);
+    axios({
+      headers: {
+        'Authorization': 'Bearer ' + authToken
+      },
+      method: 'put',
+      url: transactionServiceUrl + '/reward/' + req.query.transactionId,
+      data: {
+        pointsEarned
+      }
+    })
+    .then(function (response) {
+      if (response.status == '204') {
+        res.status('200').send('OK')
+      } else {
+        console.log({status: error.response.status, data: error.response.data})
+        res.status('404').send({result: 'Failed to post to transaction API', response })
+      }
+    }).catch(function (error) {
+        console.log("Error in PUT /transactions/reward/{transactionId}")
+        console.log({status: error.response.status, data: error.response.data})
+        res.status('404').send({error})
+    })
+  } else {
+    res.status('404').send('transactionId, category, and amount must be present in query parameters.')
+  }
+}
+
+function computeReward(category, amount) {
+    return amount;
+}
+
+function getAppIdToken(username, password) {
+  let data = {
+    username,
+    password,
+    grant_type: 'password'
+  }
+  return axios({
+    method: 'post',
+    url: appIdTokenUrl + '/token',
+    headers: {
+      'Authorization': 'Basic ' + Buffer.from(appIdClientId + ":" + appIdClientSecret).toString('base64'),
+      'Content-Type' : 'application/x-www-form-urlencoded'
+    },
+    data: qs.stringify(data)
+  })
+}
+
+function isAccessTokenExpired(access_token) {
+  if (new Date().getTime() - (jwt_decode(access_token).exp * 1000) >= 0) {
+    return true
+  } else {
+    return false
+  }
+}
+
+
+const port = process.env.PORT || 8080;
+app.listen(port, () => {
+  console.log('Hello world listening on port', port);
+});

dev/tekton/examples/example-bank/bank-knative-service/package.json

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+{
+  "name": "bank-knative-service",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "axios": "^0.19.2",
+    "express": "^4.17.1",
+    "jwt-decode": "^2.2.0"
+  }
+}