ApacheCon 2020 Micronaut + Groovy

Talk at ApacheCon 2020 about Micronaut and Groovy.

It covers:

- Micronaut Groovy Dependencies
- Routing
- Configuration
- Micronaut + Spock
- Micronaut + Geb
- GORM for Hibernate
- Micronaut GORM Multi-tenancy

Transcript

1. objectcomputing.com
   © 2019, Object Computing, Inc. (OCI). All rights reserved. No part of these notes may be reproduced, stored in a retrieval system, or transmitted, in any
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   Micronaut + Groovy
   

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2. © 2018, Object Computing, Inc. (OCI). All rights reserved.
   © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 2
   • MICRONAUT / GRAILS OCI TEA
   M
   
   
   • GUADALAJARA, SPAI
   N
   
   
   • CURATOR OF GROOVYCALAMARI.COM
   • GREACH Conference organize
   r
   
   
   • @SDELAM
   O
   
   
   • HTTPS://SERGIODELAMO.COM
   SERGIO DEL AMO
   

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3. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 3
   MICRONAUT IS LANGUAGE AGNOSTIC
   

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4. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 4
   MICRONAUT IS TEST FRAMEWORK AGNOSTIC
   

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5. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 5
   Micronaut + Groovy
   ♥
   

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6. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 6
   MICRONAUT IS WRITTEN WITH JAVA. IT IS TESTED WITH SPOCK
   

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   MICRONAUT LAUNCH - GROOVY/SPOCK
   

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   MICRONAUT CLI - GROOVY/SPOCK
   

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   Groovy Specific Modules
   Dependency Description
   micronaut-inject-groovy Include AST transformations to generate bean definitions. Should be compileOnly on your classpath.
   micronaut-runtime-groovy
   Adds the ability to specify configuration placed in src/main/resources in Groovy format (i.e.
   application.groovy)
   micronaut-function-groovy Include AST transforms that make it easier to write Functions for AWS Lambda
   

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10. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 10
    Groovy Specific Modules
    

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    Singleton
    ⚠ Make sure to use javax.inject.Singleton
    when declaring a singleton bean.
    
    
    Groovy automatically imports
    groovy.lang.Singleton
    

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12. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 12
    Configuration
    

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13. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 13
    src/main/resources/application.groovy
    

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14. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 14
    Routing
    

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15. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 15
    Using Groovy Route Builder
    

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    Using Groovy Route Builder
    

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17. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 17
    Using @GET @POST @PUT annotations
    

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18. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 18
    

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19. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 19
    Test Dependencies
    org.spockframework:spock-core 2.0-M3-groovy-3.0
    org.codehause.groovy:groovy 3.0.4
    

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20. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 20
    @AutoCleanup and @Shared
    

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21. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 21
    @AutoCleanup and @Shared
    

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22. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 22
    @AutoCleanup and @Shared
    

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23. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 23
    Spock Mocks
    

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24. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 24
    

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25. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 25
    geb-spock dependencies
    

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    src/test/resources/GebConfig.groovy
    

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27. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 27
    Webdriver binaries plugin
    

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28. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 28
    

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29. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 29
    

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30. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 30
    GORM Modules
    Dependency Description
    micronaut-hibernate-gorm Configures GORM for Hibernate for Groovy applications
    micronaut-mongo-gorm Configures GORM for Mongo DB for Groovy applications
    micronaut-neo4j-gorm Configures GORM for Mongo DB for Groovy applications
    

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31. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 31
    Micronaut + GORM Hibernate
    

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32. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 32
    Hibernate GORM Feature
    

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33. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 33
    Hibernate GORM Feature
    

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34. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 34
    Hibernate GORM | Package scanning
    

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    Entities
    

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    Transaction demarcation
    ⚠ Each method that interacts with GORM should be
    annotated with GORM's
    grails.gorm.transactions.Transactional to
    ensure a session is present. You can also add the
    @Transactional annotation to the class.
    

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37. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 37
    GORM Data services are registered automatically a singleton beans
    

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38. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 38
    

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    Validation
    

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40. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 40
    Validation
    

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41. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 41
    Multi-Tenancy
    

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42. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 42
    GORM Multitenancy
    

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43. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 43
    GORM MULTITENANCY
    
    
    https://gorm.grails.org/latest/hibernate/
    manual/index.html#multiTenancy
    

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44. © 2018, Object Computing, Inc. (OCI). objectcomputing.com 44
    GORM Multi-tenancy
    ● Configure Multitenancy Mod
    e
    
    
    ● Configure Tenant Resolve
    r
    
    
    ● Configure Domain classes which you want to be
    regarded as multi tenant.
    
    
    
    ● User Tenants.* or Multi-tenancy
    Transformations.
    

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45. © 2018, Object Computing, Inc. (OCI). All rights reserved.
    © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 45
    Multi-tenancy modes
    Modes Description
    DATABASE
    Separate database with a separate connection pool
    is used to store each tenants data.
    SCHEMA
    The same database, but different schemas are
    used to store each tenants’ data.
    DISCRIMINATOR
    The same database is used with a discriminator
    used to partition and isolate data.
    

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46. © 2018, Object Computing, Inc. (OCI). All rights reserved.
    © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 46
    Multi-tenancy modes - Data isolation
    Modes Isolation
    DATABASE
    SCHEMA
    DISCRIMINATOR
    

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47. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 47
    MULTI-TENANCY PROPAGATION
    src/main/resources/application.yml
    

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48. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 48
    DOMAINS MULTI-TENANCY
    

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49. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 49
    DOMAINS - PARTITIONED MULTI-TENANCY
    

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50. © 2018, Object Computing, Inc. (OCI). All rights reserved.
    © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 50
    Multi-tenancy transformations
    Transformation Description
    @CurrentTenant
    Resolve the current tenant for the context of a class
    or method
    @Tenant
    Use a specifc tenant for the context of a class or
    method
    @WithoutTenant
    Execute logic without a specific tentnat (using the
    default connection)
    

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51. © 2018, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 51
    DOMAINS - PARTITIONED MULTI-TENANCY
    

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52. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 52
    Multi-Tenancy GORM - Tenant Resolvers
    Name Description
    Cookie Tenant Resolver Removes the current tenant from an HTTP cookie
    Fixed Tenant Resolver Resolves against a fixed tenant id
    HttpHeaderTenantResolver Resolves the current tenant from the request HTTP Header
    PrincipalTenantResolver Resolves the current tenant from the authenticated username
    SessionTenantResolver Resolves the current tenant from the HTTP Session
    SubdomainTenantResolver Resolves the tenant id from the subdomain
    SystemPropertyTenantResolver Resolves the tenant id from a system property
    

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53. © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com
    • gitter.im/micronautfw
    
    
    • docs.micronaut.io
    
    
    • guides.micronaut.io
    
    
    • micronaut.io/faq.html
    
    
    • github.com/micronaut-projects/micronaut-core
    
    
    • github.com/micronaut-projects/micronaut-examples
    
    
    • objectcomputing.com/products/micronaut
    
    
    • info@micronaut.io
    Micronaut Resources
    53
    

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54. CONNECT WITH US
    1+ (314) 579-0066
    @objectcomputing
    objectcomputing.com
    © 2019, Object Computing, Inc. (OCI). All rights reserved. objectcomputing.com 54
    Questions?
    

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