Micronaut Test Resources

Transcript

1. Micronaut Test Resources
   Automatic test resources provisioning
   for your Micronaut applications
   Cédric Champeau
   Micronaut, Oracle Labs
   @melix@mastodon.xyz
   @CedricChampeau
   Copyright © 22-12-14, Oracle and/or its affiliates
   Micronaut® is a registered trademark of Object Computing, Inc. Use is for referential purposes and does not
   imply any endorsement or affiliation with any third-party product. Unauthorized use is strictly prohibited.
   

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2. - Working at Oracle Labs on Micronaut
   Main focus on build plugins and dev
   productivitity
   - Formerly working at Gradle Inc
   - Author of static compiler of Groovy
   - Amateur astronomer
   @melix@astrodon.social
   https://www.astrobin.com/users/melix/
   https://bit.ly/3eGD0GM (Youtube)
   About me
   Copyright © 2022, Oracle and/or its affiliates
   micronaut.io github.com/micronaut-projects/micronaut-core
   

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3. Graal Cloud Native (GCN)
   Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/Highly Restricted
   3
   Use Graal Cloud Native toolkit to leverage services like
   object-storage, monitoring, authentication, secret
   management, and deploy to popular cloud platforms.
   Graal Cloud Native lets you take full advantage of
   powerful cloud services without coupling to
   proprietary platform APIs and makes application
   portability possible.
   Graal Cloud Native supports Micronaut and Spring
   Boot Java Frameworks with Helidon support coming
   soon.
   

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4. Simplified service
   usage eliminates the
   need to learn
   proprietary platform
   APIs.
   Advanced compile-time
   validation to reduce
   dev/test/debug cycle.
   Inject cloud features
   right into an application
   exactly where they are
   needed.
   Major public cloud
   services supported out
   of the box.
   Compile Java
   applications with
   GraalVM Native to start
   lightening fast, operate
   at peak performance
   immediately, and require
   less memory and CPU.
   Package into lightweight
   container images for
   even faster deployment
   Deploy to different
   cloud providers with no
   code changes.
   Support for all the
   major cloud platforms.
   Graal Cloud Native
   Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal
   4
   Easily Leverage
   Cloud Platform
   Services
   Multicloud by
   design
   Developer
   Productivity
   Write Microservices
   as Cloud-Native
   Applications
   Benefits
   

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5. - Micronaut is focused on modern architectures
   like Serverless and Microservices
   - Also a complete framework for any type of
   application
   - Lightweight, reactive (HTTP Client/Server
   based on Netty)
   - Annotation processor to compute framework
   infrastructure at compile time
   Micronaut
   Copyright © 2022, Oracle and/or its affiliates
   micronaut.io github.com/micronaut-projects/micronaut-core
   

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6. Micronaut computes:
   - All dependency & configuration injection
   - Annotation metadata, meta-annotations
   - AOP proxies
   - Bean introspections
   - And all other framework infrastructure
   - Reflection, runtime proxy, and dynamic
   classloader free
   Micronaut = Build Time Framework Infrastructure
   Copyright © 2022, Oracle and/or its affiliates
   micronaut.io github.com/micronaut-projects/micronaut-core
   

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7. High-performance JDK distribution
   Increases application throughput, reduces
   latency, reduces memory use
   Graal just-in-time (JIT) compiler that runs on top
   of HotSpot, written in Java
   native-image ahead-of-time (AoT) compiler
   compiles Java applications into small self-
   contained native binaries
   Micronaut = Build Time Framework Infrastructure
   Copyright © 2022, Oracle and/or its affiliates
   graalvm.org github.com/graalvm/graalvm-demos
   oracle.com/graalvm
   

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8. Micronaut + GraalVM Native Image are a match
   made in heaven
   Less work to configure Native Image because
   Micronaut eliminates reflection, runtime
   proxies, bytecode generation and dynamic
   classloading
   Startup time 20ms and Memory Consumption
   18MB!
   Micronaut GraalVM
   ♥️
   Copyright © 2022, Oracle and/or its affiliates
   graalvm.org github.com/graalvm/graalvm-demos
   oracle.com/graalvm
   ♥️
   

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9. - New in Micronaut 3.6
   - Simplifies setup of tests
   - eg. spawn a database container, a Kafka
   server, …
   - Compatible with native executables
   - Extensible
   Micronaut Test Resources
   Copyright © 2022, Oracle and/or its affiliates
   micronaut.io github.com/micronaut-projects/micronaut-core
   

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10. Copyright © 2022, Oracle and/or its affiliates | Confidential: Internal/Restricted/Highly Restricted
    10
    

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11. Micronaut Test Resources
    Copyright © 2022, Oracle and/or its affiliates
    Demo 1 : Micronaut Data JDBC + Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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12. ●
    ./gradlew test → spawns test resources
    ●
    ./gradlew run → also spawns test resources
    ●
    ./gradlew -t test (or run) → keeps tests resources alive
    ●
    ./gradlew startTestResourcesService → test resources outlive the build
    ●
    ./gradlew nativeTest
    • Builds a native image which can connect to test resources service
    • Runs tests against the test resources
    Micronaut Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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13. Micronaut Test Resources
    Copyright © 2022, Oracle and/or its affiliates
    Demo 2 : Micronaut MQTT + Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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14. ●
    Supports test resources service cross-project
    • Two independent “Git” repositories can share resources
    • Or in simpler use cases, different modules of same repository
    ●
    Supports test resources service cross-build tools!
    • e.g, producer built with Maven and consumer built with Gradle
    Micronaut Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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15. Micronaut Test Resources
    Copyright © 2022, Oracle and/or its affiliates
    Demo 3 : Micronaut Email + Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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16. ●
    Supports conventional way to declare new resources
    Micronaut Test Resources
    test-resources:
    containers:
    fakesmtp:
    image-name: ghusta/fakesmtp
    hostnames:
    - smtp.host
    exposed-ports:
    - smtp.port: 25
    

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17. Micronaut Test Resources
    Copyright © 2022, Oracle and/or its affiliates
    Demo 4 : Custom Test Resources
    micronaut.io github.com/micronaut-projects/micronaut-core
    

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18. ●
    Supports completely adhoc test resources
    Micronaut Test Resources
    public class MyTestResource implements TestResourcesResolver {
    public static final String MY_TEST_PROPERTY = "my.user.name";
    @Override
    public List getResolvableProperties(Map> propertyEntries, Map testResourcesConfig) {
    return Collections.singletonList(MY_TEST_PROPERTY);
    }
    @Override
    public Optional resolve(String propertyName, Map properties, Map testResourcesConfiguration) {
    if (MY_TEST_PROPERTY.equals(propertyName)) {
    return Optional.of("world");
    }
    return Optional.empty();
    }
    }
    

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20. ●
    Supports both JDBC and R2DBC
    • PostgreSQL
    • MySQL/MariaDB
    • Oracle XE
    • Microsoft SQL Server
    ●
    Container based resources
    • Elasticsearch
    • Kafka
    • MongoDB
    • MQTT (HiveMQ, RabbitMQ)
    • Neo4J
    • Redis
    • Hashicorp Vault
    Micronaut Test Resources : conclusion
    

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21. ●
    Generic Testcontainers support
    • Expose your own container via conventional properties
    • Allows mounting local files, etc.
    ●
    Generic test resources support
    • Implement your own!
    ●
    Compatible with native images
    • Isolates your application code from test resources
    • Native binary connects to remote service
    Micronaut Test Resources : conclusion
    

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22. ●
    Micronaut Launch : https://micronaut.io/launch
    ●
    Micronaut Project: https://micronaut.io/
    ●
    Micronaut Test Resources: https://github.com/micronaut-projects/micronaut-test-resources
    Slides coming @melix@mastodon.xyz
    Micronaut Test Resources : resources
    

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