Why PCF is the best platform for Spring Boot

1. 1 Why PCF is the best platform for Spring Boot 2017-07-20 Toshiaki Maki (@making)

2. Who am I ? 2 Toshiaki Maki (@making) https://blog.ik.am Sr. Solutions Architect @Pivotal Japan Spring Framework 💖 Cloud Foundry 💖

3. Platform Spring Specific Comparison 3 AWS BeanStalk Azure WebApps Google AppEngine Heroku OpenShift /k8s PCF/ PWS Spring Cloud Connector Spring Cloud Connector Heroku Spring Cloud Connector Cloud Foundry Spring Boot Integration * cloud profile * Apps Manager Spring Boot Actuator Support * Metric Forwarder Spring Cloud Integration Spring Cloud AWS Spring Cloud GCP * Spring Cloud Kubernetes * SCDF * Spring Cloud Services * Trace Exporter * SCDF

4. Platform Spring Specific Comparison 3 AWS BeanStalk Azure WebApps Google AppEngine Heroku OpenShift /k8s PCF/ PWS Spring Cloud Connector Spring Cloud Connector Heroku Spring Cloud Connector Cloud Foundry Spring Boot Integration * cloud profile * Apps Manager Spring Boot Actuator Support * Metric Forwarder Spring Cloud Integration Spring Cloud AWS Spring Cloud GCP * Spring Cloud Kubernetes * SCDF * Spring Cloud Services * Trace Exporter * SCDF

5. Why PCF for Spring? 4

6. Why PCF for Spring? 4 Because Pivotal Cloud Foundry gives us a lot of out-of-the-box features to manage / operate Spring Boot apps

7. Why PCF for Spring? 4 Because Pivotal Cloud Foundry gives us a lot of out-of-the-box features to manage / operate Spring Boot apps

8. Why PCF for Spring? 4 Because Pivotal Cloud Foundry gives us a lot of out-of-the-box features to manage / operate Spring Boot apps 12 Factors Apps Microservices Security Tracing Metrics

9. Spring Support in PCF 5 • cloud profile • Spring Cloud Connectors • Spring Cloud Services • Trace Exporter • Spring Actuator Support in Apps Manager • Metrics Forwarder Service

11. "profile" in Spring 7 without PCF/PWS myapp.foo=I am in local env. message=I am a default property. logging.level.com.example=DEBUG myapp.foo=I am in AWS. message=I am a production property logging.level.com.example=INFO application.properties application-prod.properties java -jar app.jar --spring.profiles.active=prod

12. cloud profile 8 with PCF/PWS myapp.foo=I am in local env. message=I am a default property. logging.level.com.example=DEBUG myapp.foo=I am in cloud foundry. message=I am a cloud property. logging.level.com.example=INFO application.properties application-cloud.properties java -jar app.jar --spring.profiles.active=cloud

13. cloud profile 8 with PCF/PWS myapp.foo=I am in local env. message=I am a default property. logging.level.com.example=DEBUG myapp.foo=I am in cloud foundry. message=I am a cloud property. logging.level.com.example=INFO application.properties application-cloud.properties java -jar app.jar --spring.profiles.active=cloud cloud profile is set by java-buildpack

15. Attach backend services 10 without PCF/PWS spring.datasource.url=real-db.example.com spring.datasource.username=real-db-user spring.datasource.password=readl-db-password spring.rabbitmq.addresses=real-rabbit.example.com spring.rabbitmq.username=real-rabbit-user spring.rabbitmq.password=real-rabbit-password spring.rabbitmq.virtual-host=real-vhost application-prod.properties

16. Attach backend services 11 without PCF/PWS spring.datasource.url=${DB_URL} spring.datasource.username=${DB_USERNAME} spring.datasource.password=${DB_PASSWORD} spring.rabbitmq.addresses=${RABBIT_URL} spring.rabbitmq.username=${RABBIT_USERNAME} spring.rabbitmq.password=${RABBIT_PASSWORD} spring.rabbitmq.virtual-host=${RABBIT_VHOST} application-prod.properties

17. Attach backend services 11 without PCF/PWS spring.datasource.url=${DB_URL} spring.datasource.username=${DB_USERNAME} spring.datasource.password=${DB_PASSWORD} spring.rabbitmq.addresses=${RABBIT_URL} spring.rabbitmq.username=${RABBIT_USERNAME} spring.rabbitmq.password=${RABBIT_PASSWORD} spring.rabbitmq.virtual-host=${RABBIT_VHOST} application-prod.properties export DB_URL=real-db.example.com export DB_USERNAME=real-db-user export DB_PASSWORD=real-db-password ...

18. Spring Cloud Connectors 12 with PCF/PWS @Profile("cloud") public class CloudConfig extends AbstractCloudConfig { @Bean public DataSource dataSource() { return connectionFactory().dataSource(); } @Bean public ConnectionFactory rabbitConnectionFactory() { return connectionFactory().rabbitConnectionFactory(); } }

19. Spring Cloud Connectors 12 with PCF/PWS @Profile("cloud") public class CloudConfig extends AbstractCloudConfig { @Bean public DataSource dataSource() { return connectionFactory().dataSource(); } @Bean public ConnectionFactory rabbitConnectionFactory() { return connectionFactory().rabbitConnectionFactory(); } } cf bind-service myapp mydb cf bind-service myapp myrabbit

20. Spring Cloud Connectors 13 with PCF/PWS <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-spring-service-connector</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-cloudfoundry-connector</artifactId> </dependency>

21. Spring Cloud Connectors 14 • RDB • RabbitMQ • Redis • MongoDB • SMTP • Spring Cloud Services (Config Server, Eureka, Hystrix Dashboard) [1] • Vault [2] • .... with PCF/PWS [1] ... https://github.com/pivotal-cf/spring-cloud-services-connector [2] ... https://github.com/pivotal-cf/spring-cloud-vault-connector

22. ⚠ Do NOT use default datasource 15 with PCF/PWS https://discuss.pivotal.io/hc/en-us/articles/221898227-Connection-pool-warning-message-maxIdle-is-larger-than- maxActive-setting-maxIdle-to-4-seen-in-PCF-deployed-Spring-app org.apache.tomcat.jdbc.pool.ConnectionPool WARNING maxIdle is larger than maxActive, setting maxIdle to: 4

23. ⚠ Do NOT use default datasource 15 with PCF/PWS https://discuss.pivotal.io/hc/en-us/articles/221898227-Connection-pool-warning-message-maxIdle-is-larger-than- maxActive-setting-maxIdle-to-4-seen-in-PCF-deployed-Spring-app org.apache.tomcat.jdbc.pool.ConnectionPool WARNING maxIdle is larger than maxActive, setting maxIdle to: 4 org.apache.tomcat.jdbc.pool.PoolExhaustedException: [...] Timeout: Pool empty. Unable to fetch a connection in 30 seconds, none available[size:4; busy:4; idle:0; lastwait:30000] 😱

24. ⚠ Do NOT use default datasource 16 with PCF/PWS @Profile("cloud") public class CloudConfig extends AbstractCloudConfig { @Bean public DataSource dataSource() { PooledServiceConnectorConfig.PoolConfig poolConfig = new PooledServiceConnectorConfig.PoolConfig( 5 /* min */, 30 /* max */, 3000 /* wait */); return connectionFactory() .dataSource(new DataSourceConfig(poolConfig, null)); } }

26. Microservices with Spring Cloud 18 without PCF/PWS Spring Boot App Spring Boot App Service Registry (Eureka) Config Server Circuit Breaker Dashboard (Hystrix Dashboard) You manage (deploy + security) You manage (deploy + security) You manage (deploy + security)

27. Spring Cloud Services 19 with PCF/PWS Spring Boot App Spring Boot App Service Registry (Eureka) Config Server Circuit Breaker Dashboard (Hystrix Dashboard) PCF manage (cf cs & cf bs) PCF manage (cf cs & cf bs) PCF manage (cf cs & cf bs) 19 UAA

29. Distributed Tracing with Zipkin 21 Spring Boot App Spring Boot App Spring Boot App without PCF/PWS Spring Boot App Zipkin You manage (deploy + security) X-B3-SpaceId X-B3-TraceId

30. Distributed Tracing with Zipkin 22 spring.zipkin.url=my-zipkin.example.com without PCF/PWS

31. Trace Exporter 23 Spring Boot App Spring Boot App PCF Metrics with PCF/PWS Trace Exporter GoRouter Spring Boot App Spring Boot App X-B3-SpaceId X-B3-TraceId

32. Trace Exporter 24

33. Trace Exporter 25

35. Spring Boot Actuator 27 Spring Boot Actuator /health, /info, /loggers, /dump

36. Spring Boot Actuator 27 Spring Boot Actuator /health, /info, /loggers, /dump Secured by default since Spring Boot 1.5. ROLE_ACTUATOR is required.

37. Secured by Default (since Spring Boot 1.5) 28 🔒

38. 29 😛 management.security.enabled=false

39. 29 😛 management.security.enabled=false 🙅

40. 30 management.security.enabled=true management.security.enabled=false application.properties application-cloud.properties

41. Many users say ... 31

42. Many users say ... 31 "Actuator is actually useful, but it is not for production, right?"

43. Nooooooooooooooooo!!!!! 32

44. Nooooooooooooooooo!!!!! 32 http://docs.spring.io/spring-boot/docs/current/reference/html/production-ready.html

45. Secure with Spring Security 33 without PCF/PWS @EnableWebSecurity @Order(SecurityProperties.ACCESS_OVERRIDE_ORDER) public class ActuatorSecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http.antMatcher("/admin/**").authorizedRequests() .anyRequest().hasRole("ACTUATOR") .and().httpBasic() .and().csrf().disable(); } // ... } management.context-path=/admin

46. Spring Actuator Support in Apps Manager 34 Spring Boot Actuator /cloudfoundryapplication/health, /cloudfoundryapplication/info, ... Apps Manager UAA token token with PCF/PWS Cloud Controller token permission

47. Spring Actuator Support in Apps Manager 5 Endpoint Description Supported Version /dump Get thread dump 🆕 1.11~ /env Get env variables, properties /metrics Get application's metrics /health Get the result of health checks ✅ 1.9~ /info Get build information ✅ 1.9~ /loggers Change logging level ✅ 1.9~ /trace Get request trace log 🆕 1.11~ /heapdump Download heap dump 🆕 1.11~

48. Apps Manager 36

49. /health 37

50. /info 38

51. /loggers 39

52. /dump 40

53. /dump 41

54. /trace 42

55. /heapdump 43

56. /heapdump 44

57. /heapdump 45

58. /heapdump 46

62. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics

63. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics Metrics Writer

64. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics Metrics Writer TSDB or ...

65. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics Redis, OpenTSDB, Statsd, JMX Metrics Writer TSDB or ...

66. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics send Redis, OpenTSDB, Statsd, JMX Metrics Writer TSDB or ...

67. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics send Redis, OpenTSDB, Statsd, JMX Dashboard Metrics Writer TSDB or ...

68. Spring Boot Actuator Metrics 49 Spring Boot Actuator /metrics send Redis, OpenTSDB, Statsd, JMX Dashboard You configure Metrics Writer TSDB or ...

69. Metrics Writer 50 @Bean @ExportMetricWriter MetricWriter metricWriter(MetricExportProperties export){ return new RedisMetricRepository(connectionFactory, export.getRedis().getPrefix(), export.getRedis().getKey()); } docs.spring.io/spring-boot/docs/current/reference/html/production-ready-metrics.html#production-ready-metric-writers without PCF/PWS

70. Metrics Forwarder Service 51 comes with java buildpack v3.18/4.2+ Enables Actuator's MetricsWriter to Metrics Forwarder Service automatically https://github.com/cloudfoundry/java-buildpack-metric-writer https://github.com/cloudfoundry/java-buildpack/blob/master/docs/framework-metric_writer.md with PCF/PWS

71. Metrics Forwarder Service 52 Spring Boot Actuator Metrics Writer Java buildpack Metrics Forwarder Service bind TSDB Dashboard send send with PCF/PWS

72. Metrics Forwarder Service 53 cf bind-service myapp mf cf cups mf -p '{"endpoint":"X","access_token":"X"}' cf create-service metric-forwarder plan mf OR THEN with PCF/PWS

73. DEMO Scenario 54 Spring Boot Actuator Metrics Writer Java buildpack Metrics Forwarder Service bind Grafana Prometheus scrape send works as * Metrics Forwarder Service * Service Broker * Prometheus Exporter PromQL

74. 55

75. Source code 56 https://github.com/making/prometheus-exporter- metrics-forwarder-service

76. Integration with PCF (Future) 57 Spring Boot Actuator Metrics Writer Java buildpack Metrics Forwarder Service bind PCF Metrics, Autoscaler send send will be provided as a "tile"

77. Recap 58 Why PCF is best platform for Spring ➡ a lot of out-of-the-box features • cloud profile • Spring Cloud Connectors • Spring Cloud Services • Trace Exporter • Spring Actuator Support in Apps Manager • Metrics Forwarder Service

78. https://www.youtube.com/watch?v=9rPjLaOkEUo 59

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