What's new in Spring Data MongoDB

Transcript

1. September, 2020
   What’s new in Spring Data
   MongoDB
   Copyright © 2020 VMware, Inc. or its affiliates.
   

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2. Before We Start
   Staying focused is hard :)
   ☕
   Documentation
   Samples
   ...
   
   
   

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3. Cover w/ Image
   Agenda
   ● Newman Release (May 2020)
   ● 2020.0 (expected end Oct 2020)
   codename Ockham
   org.springframework.data
   spring-data-releasetrain
   Neumann-SR3
   CUR
   org.springframework.data
   spring-data-bom
   2020.0.0-M2
   PRE
   org.springframework.data
   spring-data-mongodb
   3.1.0-M2
   PRE
   

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4. Spring Data MongoDB 3.0 (Neumann)
   Major version upgrade with some breaking changes
   ● Driver upgrades to 4.0
   ● Indexing Updates
   ● Updates via Aggregation pipeline
   ● Reactive GridFS changes
   ● Convenience
   org.springframework.data
   spring-data-mongodb
   3.0.3
   CUR
   

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5. org.mongodb
   mongodb-driver-reactivestreams
   1.12.0
   3.0 – Driver Upgrades
   Dependency Changes
   org.mongodb
   mongo-java-driver
   3.11.2
   2.x
   mongo-java-driver
   sync
   mongo-java-driver ...-driver-reactivestreams
   reactive
   

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6. org.mongodb
   mongodb-driver-reactivestreams
   4.0.5
   org.mongodb
   mongodb-driver-reactivestreams
   1.12.0
   3.0 – Driver Upgrades
   Dependency Changes
   org.mongodb
   mongo-java-driver
   3.11.2
   org.mongodb
   mongodb-driver-sync
   4.0.5
   org.mongodb
   mongodb-driver-core
   4.0.5
   mongo-java-driver
   mongo-java-driver ...-driver-reactivestreams
   2.x 3.0
   sync
   reactive
   mongodb-driver-core
   mongodb-driver-sync
   sync
   mongodb-driver-reactivestreams
   mongodb-driver-core
   reactive
   

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7. 3.0 – Driver Upgrades
   Configuration Changes – What it was like in 2.x
   AbstractMongoConfiguration (2.x)
   @Configuration
   class Cfg extends AbstractMongoConfiguration {
   @Override
   protected String getDatabaseName() {
   return "database";
   }
   @Override
   public com.mongodb.MongoClient mongoClient() {
   return new com.mongodb.MongoClient();
   }
   }
   

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8. 3.0 – Driver Upgrades
   Configuration Changes – Driver Type
   AbstractMongoClientConfiguration (3.x)
   @Configuration
   class Cfg extends AbstractMongoConfiguration {
   @Override
   protected String getDatabaseName() {
   return "database";
   }
   @Override
   public com.mongodb.MongoClient mongoClient() {
   return new com.mongodb.MongoClient();
   }
   }
   @Configuration
   class Cfg extends AbstractMongoClientConfiguration {
   @Override
   protected String getDatabaseName() {
   return "database";
   }
   @Override
   public com.mongodb.client.MongoClient mongoClient() {
   return MongoClients.create();
   }
   }
   AbstractMongoConfiguration (2.x)
   

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9. @Configuration
   class Cfg extends AbstractMongoConfiguration {
   @Override
   protected String getDatabaseName() {
   return "database";
   }
   @Override
   public com.mongodb.MongoClient mongoClient() {
   return new com.mongodb.MongoClient();
   }
   }
   AbstractMongoConfiguration (2.x)
   3.0 – Driver Upgrades
   Configuration Changes – Client Creation
   AbstractMongoClientConfiguration (3.x)
   @Configuration
   class Cfg extends AbstractMongoClientConfiguration {
   @Override
   protected String getDatabaseName() {
   return "database";
   }
   }
   

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10. 3.0 – Driver Upgrades
    Configuration Changes – Driver Settings
    AbstractMongoClientConfiguration (3.x)
    @Configuration
    class Cfg extends AbstractMongoConfiguration {
    @Override
    protected String getDatabaseName() {
    return "database";
    }
    @Override
    public com.mongodb.MongoClient mongoClient() {
    MongoClientURI uri = new MongoClientURI("!!...
    return new MongoClient(uri));
    }
    }
    @Configuration
    class Cfg extends AbstractMongoClientConfiguration {
    @Override
    protected String getDatabaseName() {
    return "database";
    }
    @Override
    protected void configureClientSettings(Builder builder) {
    builder.applyConnectionString(new ConnectionString("...
    builder.uuidRepresentation(UuidRepresentation.STANDARD);
    }
    }
    AbstractMongoConfiguration (2.x)
    

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11. AbstractMongoClientConfiguration (3.x)
    @Configuration
    class Cfg extends AbstractMongoClientConfiguration {
    @Override
    protected String getDatabaseName() {
    return "database";
    }
    @Override
    protected void configureClientSettings(Builder builder) {
    builder.applyConnectionString(new ConnectionString("!!..."));
    builder.uuidRepresentation(UuidRepresentation.STANDARD);
    }
    @Override
    protected boolean autoIndexCreation() {
    return true;
    }
    }
    3.0 – Driver Upgrades
    Configuration Changes - Indexing
    AbstractMongoConfiguration (2.x)
    @Document
    public class Person {
    @Id private String id;
    @Indexed(unique = true) private Integer ssn;
    private String firstName;
    @Indexed private String lastName;
    private Integer age;
    }
    {…}
    spring.data.mongodb.auto-index-creation
    

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12. 3.0 – Update via Aggregation Pipeline
    {…}
    {
    "_id" : 1,
    "student" : "Maya",
    "homework" : [ 10, 5, 10 ],
    "quiz" : [ 10, 8 ],
    "extraCredit" : 0
    }
    totalHomework : { $sum : $homework }
    totalQuiz : { $sum : $quiz }
    totalScore : {
    $add : [
    "$totalHomework",
    "$totalQuiz",
    "$extraCredit“ ]}
    Expressive, Conditional Updates
    $addFields
    $set
    $unset
    $replaceWith
    $replaceRoot
    $project
    

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13. 3.0 – Update via Aggregation Pipeline
    {…}
    {
    "_id" : 1,
    "student" : "Maya",
    "homework" : [ 10, 5, 10 ],
    "quiz" : [ 10, 8 ],
    "extraCredit" : 0
    }
    totalHomework : { $sum : $homework }
    totalQuiz : { $sum : $quiz }
    totalScore : {
    $add : [
    "$totalHomework",
    "$totalQuiz",
    "$extraCredit“ ]}
    public void calculateTotalScore() {
    AggregationUpdate update = AggregationUpdate.update()
    .set(SetOperation.builder()
    .set("totalHomework").toValueOf(valueOf("homework").sum())
    .and()
    .set("totalQuiz").toValueOf(valueOf("quiz").sum())
    .and()
    .set("totalScore").toValueOf(
    valueOf("totalHomework")
    .add("totalQuiz")
    .add("extraCredit ")));
    mongoOperations.update(Student.class)
    .apply(update)
    .all();
    }
    Expressive, Conditional Updates
    

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14. 3.0 – Reactive GridFS
    AsyncInputStream source = AsyncStreamHelper.toAsyncInputStream(resource.getInputStream());
    gridFSops.store(source, “springone", "binary/octet-stream", metadata);
    2.x
    

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15. 3.0 – Reactive GridFS
    Flux source = ...
    gridFSops.store(source, “springone", "binary/octet-stream", metadata);
    public class ReactiveGridFsResource {
    public Mono getGridFSFile() {
    !!...
    }
    }
    public Flux getContent() {
    ... // via GridFSDownloadPublisher
    }
    ReactiveGridFsResource s1p = gridFSops.getResources("s1p");
    3.0
    

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16. 3.0 – Convenience
    ...somtimes it’s the small things
    query(where("name")...)
    .withHint(
    new Document("att1", 1).append("att2", 1)
    )
    @Sharded
    public class Person {
    private @Id String id;
    private String firstname;
    }
    Shard Support
    template.query(Person.class)
    .matching(where("firstname").is("luke"))
    .one()
    Narrow API
    query(where("name")!!...).withHint("index-name")
    Index Hints (via name)
    template.query(Person.class)
    .matching(query(where("firstname").is("luke")))
    .one()
    

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17. Spring Data MongoDB 3.1 (2020.0)
    Closing gaps to the imperative implementation.
    ● Reactive SpEL in @Query annotations
    ● Reactive Auditing
    ● Repository Metrics
    ● GraalVM Native Image experience
    ● Read Only Transactions
    codename: Ockham
    The following section is intended to outline the general direction
    of VMware's offerings. It is intended for information purposes
    only and may not be incorporated into any contract. Any
    information regarding pre-release of VMware offerings, future
    updates or other planned modifications is subject to ongoing
    evaluation by VMware and is subject to change. This information
    is provided without warranty or any kind, express or implied, and
    is not a commitment to deliver any material, code, or
    functionality, and should not be relied upon in making
    purchasing decisions regarding VMware's offerings. These
    purchasing decisions should only be based on features currently
    available. The development, release, and timing of any features
    or functionality described for VMware's offerings in this
    presentation remain at the sole discretion of VMware. VMware
    has no obligation to update forward looking information in this
    presentation.
    org.springframework.data
    spring-data-mongodb
    3.1.0-M2
    PRE
    

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18. @Query("{ 'supervisor' : ?#{ hasRole('ROLE_ADMIN') ? new Document('$regex', '*') : principal.name } }")
    Flux findAllFilteredByRole();
    3.1 – Reactive SpEL
    now truly reactive via ReactiveEvaluationContextExtension
    Flux all = repo.findAllFilteredByRole();
    all.subscribe();
    2.x
    ⚡
    3.1
    
    

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19. 3.1 – Reactive Auditing
    @CreatedBy, @CreatedDate, @LastMod...
    @Configuration
    @EnableReactiveMongoAuditing
    static class AuditingConfig extends AbstractReactiveMongoConfiguration {
    @Override
    protected String getDatabaseName() {
    return "database";
    }
    @Bean
    public ReactiveAuditorAware auditorProvider() {
    return () -> ReactiveSecurityContextHolder.getContext()
    .map(it -> ...);
    }
    }
    

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20. repo.save(fiona).subscribe();
    3.1 – Repository Metrics
    Execution Time Measurement
    PersonRepository.save(Object):
    2 ms – SUCCESS
    Flux all = repo.findAll();
    repo.save(frank).subscribe();
    all.subscribe();
    interface PersonRepository extends ReactiveCrudRepository {
    Flux findByName(String name);
    @Query("{ 'name' : { '$set' : 'Gallagher' } }")
    Flux findError();
    }
    PersonRepository.save(Object):
    2 ms - SUCCESS
    PersonRepository.findAll():
    32 ms – SUCCESS
    repo.findByName("fiona").subscribe();
    repo.findError().subscribe();
    PersonRespository.findByName(String):
    1 ms - SUCCESS
    PersonRepository.findError():
    20 ms - ERROR
    

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21. 3.1 – Repository Metrics Setup
    via Invocation Listeners
    @Bean
    public RepositoryMetricsPostProcessor repositoryMetricsPostProcessor() {
    return new RepositoryMetricsPostProcessor();
    }
    static class RepositoryMetricsPostProcessor implements BeanPostProcessor {
    public Object postProcessBeforeInitialization(Object bean, String beanName) ...
    if (bean instanceof RepositoryFactoryBeanSupport) {
    RepositoryFactoryBeanSupport, ?, ?> repositoryFactoryBean = (...) bean;
    repositoryFactoryBean
    .addRepositoryFactoryCustomizer(repositoryFactory -> {
    repositoryFactory.addInvocationListener(System.out::println);
    });
    }
    return bean;
    }
    }
    

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22. 3.1 – GraalVM Native Image
    ...with spring-graalvm-native
    SpringDataComponentProcessor
    org.springframework.experimental
    spring-graalvm-native
    0.7.1
    SpringDataMongoDBTypeHints
    @Query
    @Aggregation
    @Document
    @Indexed
    @DBRef
    Nested Types
    Infrastructure Components ... extends CrudRepository
    Signature Types
    Methods
    Custom Implementations
    

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23. 3.1 – GraalVM Native Image
    ...with spring-graalvm-native
    

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24. © 2020 Spring. A VMware-backed project.
    Thank you
    Contact us @SpringData
    Data
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    - The Past Year in Spring for Apache Geode
    - A Deep Dive into Spring Application Events
    - Full Steam Ahead, R2DBC!
    - Building Flexible APIs with Spring HATEOAS
    DAY 1
    DAY 2
    GraalVM
    - Modernizing Apps for the Cloud with Spring
    - The Path Towards Spring Boot Native Applications
    - Spring Boot Revisited with KoFu and JaFu
    DAY 1
    DAY 2
    

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25. Questions?
    org.springframework.data
    spring-data-mongodb
    3.0.3
    org.springframework.experimental
    spring-graalvm-native
    0.7.1
    CUR
    org.springframework.data
    spring-data-mongodb
    3.1.0-M2
    PRE
    PRE
    

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