uday1bhanu / sample-app

simple app to play with istio

sample-app

• Sample app that prints env variables

• How to build the jar

./gradlew build -x test

• Supported api's
  1. /hola --> Greets with welcome message.
  2. /actuator/health --> checks the connectivity to database.
  3. /actuator/info --> app version information.
  4. /actuator/env --> exposed environment variables. Sensitive info is redacted.
  5. /actuator/metrics --> jvm metrics.

NOTE: This is a sample app for deploying in arcus prod cluster. All the api's require a login. The credentials for the app are stored as kubernetes secret sampleapp-ap-secret and mounted as env variables APP_USERNAME and APP_PASSWORD

NOTE: Sensitive information from actuator endpoints are sanitized in the response management.endpoint.env.keys-to-sanitize=password,secret,user,username,url,host

• Swagger Spec

  1. /swagger
  2. /swagger-ui.html

• Example

  Curl /hola

  curl -v --user username:password localhost:8080/hola
  *   Trying ::1...
  * TCP_NODELAY set
  * Connected to localhost (::1) port 8080 (#0)
  * Server auth using Basic with user '**********'
  > GET /hola HTTP/1.1
  > Host: localhost:8080
  > Authorization: Basic *************
  > User-Agent: curl/7.54.0
  > Accept: */*
  >
  < HTTP/1.1 200
  < Set-Cookie: JSESSIONID=ABB2A5FA5D52B67A31922588CC9D7772; Path=/; HttpOnly
  < X-Content-Type-Options: nosniff
  < X-XSS-Protection: 1; mode=block
  < Cache-Control: no-cache, no-store, max-age=0, must-revalidate
  < Pragma: no-cache
  < Expires: 0
  < X-Frame-Options: DENY
  < Content-Type: text/plain;charset=ISO-8859-1
  < Content-Length: 27
  < Date: Tue, 23 Oct 2018 16:29:37 GMT
  <
  * Connection #0 to host localhost left intact
  Welcome to ARCUS sample app
  

  Curl /actuator/health

  curl -v --user username:password localhost:8080/actuator/health
  *   Trying ::1...
  * TCP_NODELAY set
  * Connected to localhost (::1) port 8080 (#0)
  * Server auth using Basic with user '**********'
  > GET /actuator/health HTTP/1.1
  > Host: localhost:8080
  > Authorization: Basic **************
  > User-Agent: curl/7.54.0
  > Accept: */*
  >
  < HTTP/1.1 200
  < Set-Cookie: JSESSIONID=326C139A16FD89AC3A196A2617F7FC9A; Path=/; HttpOnly
  < X-Content-Type-Options: nosniff
  < X-XSS-Protection: 1; mode=block
  < Cache-Control: no-cache, no-store, max-age=0, must-revalidate
  < Pragma: no-cache
  < Expires: 0
  < X-Frame-Options: DENY
  < Content-Type: application/vnd.spring-boot.actuator.v2+json;charset=UTF-8
  < Transfer-Encoding: chunked
  < Date: Tue, 23 Oct 2018 16:30:01 GMT
  <
  * Connection #0 to host localhost left intact
  {
    "status":"UP"
  }
  

  Curl /swagger

  curl -v --user username:password localhost:8080/swagger
  *   Trying ::1...
  * TCP_NODELAY set
  * Connected to localhost (::1) port 8080 (#0)
  * Server auth using Basic with user '********'
  > GET /swagger HTTP/1.1
  > Host: localhost:8080
  > Authorization: Basic **************
  > User-Agent: curl/7.54.0
  > Accept: */*
  >
  < HTTP/1.1 200
  < Set-Cookie: JSESSIONID=21697D2361635811AC62E0BF39D404CA; Path=/; HttpOnly
  < X-Content-Type-Options: nosniff
  < X-XSS-Protection: 1; mode=block
  < Cache-Control: no-cache, no-store, max-age=0, must-revalidate
  < Pragma: no-cache
  < Expires: 0
  < X-Frame-Options: DENY
  < Content-Type: application/json;charset=UTF-8
  < Transfer-Encoding: chunked
  < Date: Tue, 23 Oct 2018 16:44:22 GMT
  <
  * Connection #0 to host localhost left intact
  {
    "swagger": "2.0",
    "info": {
      "description": "API to access sample app.",
      "version": "1.0.0",
      "title": "Sample App API",
      "termsOfService": "Terms of service: This is a temporary mock service for internal use only",
      "contact": {
        "name": "www.uday.com"
      },
      "license": {
        "name": "Internal use only",
        "url": "www.uday.com"
      }
    },
    "host": "localhost:8080",
    "basePath": "/",
    "tags": [
      {
        "name": "hola-controller",
        "description": "Hola Controller"
      }
    ],
    "paths": {
      "/hola": {
        "get": {
          "tags": [
            "hola-controller"
          ],
          "summary": "hola",
          "operationId": "holaUsingGET",
          "consumes": [
            "application/json"
          ],
          "produces": [
            "*/*"
          ],
          "responses": {
            "200": {
              "description": "OK",
              "schema": {
                "type": "string"
              }
            },
            "401": {
              "description": "Unauthorized"
            },
            "403": {
              "description": "Forbidden"
            },
            "404": {
              "description": "Not Found"
            }
          }
        }
      }
    }
  }
  

• Install

  Pre-Requisite:
  1. Kubernetes secret sampleapp-ap-secret and mysql-apcustomer-secret
  2. Kubernetes configmap external-service-config.yaml