Improve Your Developer Experience with Spring Boot Dev Services

We all use Docker (and Docker Compose) to provide the external services we develop against, say, a PostgreSQL database. Wouldn't it be great if Spring Boot knows there are external services needed and then auto-configures itself to use them? In this talk, we will show you an upcoming new feature of Spring Boot that will certainly improve your developer experience.

https://www.youtube.com/watch?v=Yqss7tYP890&list=PLgGXSWYM2FpPrAdQor9pi__EV1O69Qbom&index=8

Transcript

1. #vmwareexplore #
   Improve Your Developer
   Experience with Spring
   Boot Dev Services
   SPB1212LV
   Moritz Halbritter (He/Him)
   SE, VMware
   SPB1212LV
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2. © VMware, Inc. 2
   This presentation may contain product features or functionality that are currently
   under development.
   This overview of new technology represents no commitment from VMware to deliver these
   features in any generally available product.
   Features are subject to change, and must not be included in contracts, purchase orders, or sales
   agreements of any kind.
   Technical feasibility and market demand will affect final delivery.
   Pricing and packaging for any new features/functionality/technology discussed
   or presented, have not been determined.
   Required Disclaimer
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3. © VMware, Inc. 3
   What‘s the Problem?
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4. © VMware, Inc.
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5. © VMware, Inc. 5
   What‘s Creating
   the Problem?
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6. © VMware, Inc.
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7. © VMware, Inc. 7
   What’s the solution?
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8. © VMware, Inc.
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9. © VMware, Inc. 9
   Docker Compose in Spring
   Boot 3.1
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10. © VMware, Inc.
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11. © VMware, Inc.
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12. © VMware, Inc.
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13. © VMware, Inc.
    url = jdbc:postgresql://127.0.0.1:32771/mydatabase
    username = myuser
    password = secret
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14. © VMware, Inc. 14
    Digression:
    ConnectionDetails
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15. © VMware, Inc.
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16. © VMware, Inc.
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17. © VMware, Inc.
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18. © VMware, Inc.
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19. © VMware, Inc.
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20. © VMware, Inc.
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21. © VMware, Inc. 21
    Back to Docker Compose…
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22. © VMware, Inc.
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23. © VMware, Inc.
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24. © VMware, Inc.
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25. © VMware, Inc. 25
    How-to: Use Custom Images
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26. © VMware, Inc.
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27. © VMware, Inc. 27
    How-to: Ignore Services
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28. © VMware, Inc.
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29. © VMware, Inc. 29
    How-to: Share Services
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30. © VMware, Inc.
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31. © VMware, Inc. 31
    Testcontainers in Spring Boot
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32. © VMware, Inc.
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33. © VMware, Inc. 33
    Integration Tests with
    Testcontainers
    before Spring Boot 3.1
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34. © VMware, Inc.
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35. © VMware, Inc. 35
    Integration Tests with
    Testcontainers with Spring
    Boot 3.1
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36. © VMware, Inc.
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37. © VMware, Inc.
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38. © VMware, Inc. 38
    How-to: Use Generic
    Containers / Custom Images
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39. © VMware, Inc.
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40. © VMware, Inc.
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41. © VMware, Inc. 41
    Testcontainers at
    Development Time
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42. © VMware, Inc.
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43. © VMware, Inc.
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44. © VMware, Inc.
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45. © VMware, Inc.
    Run the Test Main Methods
    • From the IDE
    • Gradle: ./gradlew bootTestRun
    • Maven: ./mvnw spring-boot:test-run
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46. © VMware, Inc.
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47. © VMware, Inc. 47
    Why Two Main Methods?
    Why Not Reuse the Existing
    One?
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48. © VMware, Inc. 48
    How-to: Share Container
    Declarations
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49. © VMware, Inc.
    Share Container Declarations Between Test-main and Tests
    Extract containers into an interface
    Import this interface with @ImportTestcontainers
    • On the test-main class
    • On the tests
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50. © VMware, Inc.
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51. © VMware, Inc.
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52. © VMware, Inc.
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53. © VMware, Inc. 53
    Reusable Containers
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54. © VMware, Inc.
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55. © VMware, Inc.
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56. © VMware, Inc.
    This is an experimental Testcontainers feature!
    https://java.testcontainers.org/features/reuse/
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57. © VMware, Inc.
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58. © VMware, Inc. 58
    Conclusion
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59. © VMware, Inc.
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60. © VMware, Inc.
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61. © VMware, Inc.
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62. Thank you
    https://spring.io/blog/2023/06/19/spring-boot-31-connectiondetails-abstraction
    https://spring.io/blog/2023/06/21/docker-compose-support-in-spring-boot-3-1
    https://spring.io/blog/2023/06/23/improved-testcontainers-support-in-spring-boot-3-1
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63. Let’s continue the conversation
    Stay Connected
    Web: https://mhalbritter.github.io/
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64. Please take
    your survey.
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65. Thank You
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