Migration Guide 3.0

Table of Contents

• Jakarta EE 10
• Automatic update tool
• CDI
  • Interceptor annotations on private methods
  • Removed @AlternativePriority
• RESTEasy Reactive
  • REST Client
• JPA / Hibernate ORM
  • Moved to Hibernate ORM 6.2
  • Using persistence.xml files and quarkus.hibernate-orm.* configuration properties in the same application will fail
  • Configuration property quarkus.hibernate-orm.globally-quoted-identifiers is deprecated
  • The default ID generation optimizer is now pooled-lo
• Hibernate Reactive
  • Moved to Hibernate Reactive 2
  • Session injection
  • The default ID generation optimizer is now pooled-lo
• Hibernate Reactive Panache
  • Sessions and Transactions
  • Support of Multi
• Kubernetes/OpenShift
  • Removed deprecated properties
  • The HTTPS container port is added to generated Pod resources
• OIDC
  • Session cookie is encrypted by default
  • SameSite is Lax by default for OIDC session cookie
• SmallRye Reactive Messaging
  • vertx-kafka-client dependency removed
  • Split package resolution
• JAXB
• Testing
  • Removal of @io.quarkus.test.junit.NativeImageTest and @io.quarkus.test.junit.DisabledOnNativeImageTest annotations
  • Fixation of the Mockito subclass mockmaker
• Keystore default password
• Management interface
• OpenTelemetry
  • Extension re-write
  • OpenTelemetry Upgrades
  • JDBC tracing activation
• OpenTracing
• OpenAPI
• Scheduler/Quartz
• Dev tools
  • Maven versions
  • Removal of quarkus-bootstrap-maven-plugin Maven plugin
• MapStruct

Jakarta EE 10

Quarkus 3.0 is based on Jakarta EE 10, which means that:

• Many Jakarta EE packages have been renamed from javax.* to jakarta.*.

  For example you will have to use jakarta.inject.Inject instead of javax.inject.Inject, jakarta.persistence.EntityManager instead of javax.persistence.EntityManager, jakarta.validation.Validator instead of javax.validation.Validator, etc.

• Many corresponding implementations have been upgraded to a new major version, which implies differences in behavior, most notably for Hibernate ORM (see below).

We recommend you use the automatic update tool (see below) to ease the upgrade to Quarkus 3.0.

Automatic update tool

Quarkus 3.0 introduces an update tool that can help you update your projects to Quarkus 3.

This upgrade tool will, among other tasks:

• Update the Quarkus version

• Adjust the packages to use the jakarta.* packages

• Adjust your dependencies in some cases

• Upgrade your Quarkiverse extensions to versions compatible with Quarkus 3.0

• Adjust your configuration files when configuration properties have changed

It doesn’t handle everything (typically, Hibernate ORM API changes are not covered by the update tool) but it should handle most of the tedious work.

This update tool can be used for both Quarkus applications and Quarkus extensions, be they Maven or Gradle projects using Java or Kotlin.

If you are using the Quarkus CLI - which is recommended - upgrade it to the latest and run:

quarkus update --stream=3.0

If you are not using the CLI and using Maven, use the Quarkus Maven plugin to update your projects:

./mvnw io.quarkus.platform:quarkus-maven-plugin:3.0.1.Final:update -N -Dstream=3.0

If you are not using the CLI and using Gradle, use the Quarkus Gradle plugin to do so:

./gradlew -PquarkusPluginVersion=3.0.1.Final quarkusUpdate --stream=3.0

For more information, consult the dedicated guide.

CDI

Interceptor annotations on private methods

Adding a CDI interceptor annotation such as @Transactional to a private method was never supported, and used to result in a warning in logs because the annotation is ignored.

When such an annotation is ignored, Quarkus will now trigger a build failure instead:

jakarta.enterprise.inject.spi.DeploymentException: @Transactional will have no effect on method com.acme.MyBean.myMethod() because the method is private. [...]

Ideally you should remove such annotations since they are ignored, but if that’s not possible, set the configuration property quarkus.arc.fail-on-intercepted-private-method to false to revert to the previous behavior (warnings in logs).

Removed @AlternativePriority

The @AlternativePriority annotation has been deprecated since Quarkus 2.6 and is removed in Quarkus 3.0. Replace all usages with the 2 annotations @Alternative and @Priority.

Before:

@AlternativePriority(1)

After:

@Alternative
@Priority(1)

It is preferable to use jakarta.annotation.Priority, but if you need to maintain compatibility with Quarkus 2.x and 3.x through mechanical transformation, you can use io.quarkus.arc.Priority as well. These 2 annotations are equivalent. Note that the io.quarkus.arc.Priority annotation is getting deprecated in Quarkus 3.0 and will be removed in the future.

RESTEasy Reactive

• Class org.jboss.resteasy.reactive.server.core.multipart.MultipartFormDataOutput has been moved to org.jboss.resteasy.reactive.server.multipart.MultipartFormDataOutput

• Class org.jboss.resteasy.reactive.server.core.multipart.PartItem has been moved to ` org.jboss.resteasy.reactive.server.multipart.PartItem`

• Class org.jboss.resteasy.reactive.server.core.multipart.FormData.FormValue has been moved to org.jboss.resteasy.reactive.server.multipart.FormValue

REST Client

The REST Client no longer uses the server specific MessageBodyReader and MessageBodyWriter classes associated with Jackson (which used to be the case, but was unintentional). The result is that applications that use both quarkus-resteasy-reactive-jackson and quarkus-rest-client-reactive now have to include quarkus-rest-client-reactive-jackson

JPA / Hibernate ORM

Moved to Hibernate ORM 6.2

Quarkus now depends on Hibernate ORM 6.2 instead of Hibernate ORM 5.6.

This implies a noticeable amount of backwards-incompatible changes, be it in APIs, behavior, or database schema expectations. In particular, but not only:

• It uses jakarta.persistence. packages instead of javax.persistence..

• The legacy Criteria API was removed.

• Custom types may require adjustments.

• The syntax/behavior of JPQL/HQL/SQL queries changed slightly.

• Dialect configuration may require adjustments.

• Additional sequences/tables may be required.

• Sequences definitions (the increment size in particular) may need to be adjusted.

• Various datatypes may not be serialized the same way.

• Some databases and older database versions may not be supported anymore.

• And more.

Refer to this dedicated guide for more information.

Using persistence.xml files and quarkus.hibernate-orm.* configuration properties in the same application will fail

When configuring the Hibernate ORM extension through both a persistence.xml file and quarkus.hibernate-orm. properties in application.properties, Quarkus used to ignore quarkus.hibernate-orm. properties, even though documentation stated the application would fail to start.

Quarkus will now fail as expected when it can detect such situations.

You can still chose between persistence.xml and quarkus.hibernate-orm.* properties:

• To ignore persistence.xml files, set the configuration property quarkus.hibernate-orm.persistence-xml.ignore to true.

• To use persistence.xml files, remove all quarkus.hibernate-orm.* properties from application.properties.

Configuration property quarkus.hibernate-orm.globally-quoted-identifiers is deprecated

Use quarkus.hibernate-orm.quote-identifiers.strategy = all instead.

The default ID generation optimizer is now pooled-lo

In order to mitigate some incompatibilities caused by the migration to Hibernate ORM 6, and also to simplify sequence reset requirements in import scripts in general, the default ID generation optimizer has changed from pooled to pooled-lo.

This change is backwards-compatible, but if you need to revert to the pooled optimizer, just set quarkus.hibernate-orm.id.optimizer.default = pooled.

Hibernate Reactive

Moved to Hibernate Reactive 2

Quarkus now depends on Hibernate Reactive 2 instead of Hibernate Reactive 1.

This implies a noticeable amount of backwards-incompatible changes, be it in behavior or database schema expectations.

Most of the changes are related to Hibernate Reactive 2 depending on Hibernate ORM 6.2 instead of Hibernate ORM 5.6. Refer to this dedicated guide for more information about the migration from Hibernate ORM 5.6 to 6.2 (and thus, from Hibernate Reactive 1 to 2).

Session injection

It is no longer possible to inject a Mutiny.Session in a CDI bean. The main reason for this change is that the lifecycle of a reactive session does not fit the lifecycle of the CDI request context. And this mismatch can result in tricky errors. Users are encouraged to inject a Mutiny.SessionFactory instead and control the session lifecycle through the SessionFactory#withSession() and SessionFactory#withTransaction() methods.

The default ID generation optimizer is now pooled-lo

In order to mitigate some incompatibilities caused by the migration to Hibernate Reactive 2, and also to simplify sequence reset requirements in import scripts in general, the default ID generation optimizer has changed from pooled to pooled-lo.

This change is backwards-compatible, but if you need to revert to the pooled optimizer, just set quarkus.hibernate-orm.id.optimizer.default = pooled.

Hibernate Reactive Panache

This extension has undergone extensive refactoring. However, most of the changes do not affect the API.

Sessions and Transactions

Two major internal changes include:

• The current reactive Mutiny.Session is no longer stored in the CDI request context,

• A Panache entity method execution is not offloaded on the current Vert.x context anymore.

The consequence of these changes is that a user might need to take care of marking reactive session boundaries. For example most of the methods of a Hibernate Reactive Panache entity must be invoked within the scope of a reactive Mutiny.Session. In some cases, the session is opened automatically on demand. For example, if a Panache entity method is invoked in a JAX-RS resource method in an application that includes the quarkus-resteasy-reactive extension. For other cases, there are both a declarative and a programmatic way to ensure the session is opened. You can annotate a CDI business method that returns Uni with the @WithSession annotation. The method will be intercepted and the returned Uni will be triggered within a scope of a reactive session. Alternatively, you can use the Panache.withSession() method to achieve the same effect.

Also make sure to wrap methods that modify the database or involve multiple queries within a transaction. You can annotate a CDI business method that returns Uni with the @WithTransaction annotation. The method will be intercepted and the returned Uni is triggered within a transaction boundary. Alternatively, you can use the Panache.withTransaction() method for the same effect.

The @ReactiveTransactional annotation is deprecated and can only be used for methods that return Uni; this is validated at build time. Users are encouraged to use @WithTransaction instead.

Note	Sometimes it’s necessary to execute an asynchronous code from a blocking thread. Quarkus provides the VertxContextSupport#subscribeAndAwait() util method which subscribes to the supplied io.smallrye.mutiny.Uni on a Vert.x duplicated context, then blocks the current thread and waits for the result.

Support of Multi

Neither Hibernate Reactive nor reactive SQL clients support streaming. Furthermore, we are not able to provide a Panache#withTransaction() alternative for io.smallrye.mutiny.Multi without bypassing the Hibernate Reactive API. Therefore, we decided to remove the stream() methods from the PanacheEntityBase, PanacheQuery and PanacheRepositoryBase. You can replace the code like MyEntity.<MyEntity> streamAll() with something similar to MyEntity.<MyEntity> listAll()).toMulti().chain(list → Multi.createFrom().iterable(list)) (which is by the way very similar to the original internal implementation).

Kubernetes/OpenShift

Removed deprecated properties

Deprecated Property	Property to use
quarkus.kubernetes.expose	quarkus.kubernetes.ingress.expose
quarkus.openshift.expose	quarkus.openshift.route.expose
quarkus.kubernetes.host	quarkus.kubernetes.ingress.host
quarkus.openshift.host	quarkus.openshift.route.host
quarkus.kubernetes.group	quarkus.kubernetes.part-of
quarkus.openshift.group	quarkus.openshift.part-of

Plus, properties without the quarkus. prefix will now be ignored. For example, before this version, we could add the property kubernetes.name and this property was mapped to quarkus.kubernetes.name. After this version, we’re not going to do this any longer to avoid issues like https://github.com/quarkusio/quarkus/issues/30850.

The HTTPS container port is added to generated Pod resources

• Before, the generated container and service resources were only mapping the HTTP port of the Quarkus application. Now, the HTTPS port is also being mapped unless SSL is explicitly disabled using the property quarkus.http.insecure-requests=disabled.

• New property to select the port name to be used by the generated Ingress resource: quarkus.kubernetes.ingress.target-port=https (by default, its value is http).

OIDC

Session cookie is encrypted by default

OIDC session cookie which is created after an OIDC authorization code flow has completed, will now be encrypted by default starting from 3.0.2.Final. Users are not expected to notice it in most cases.

However, only if either mTLS or private_key_jwt (OIDC client private key is used to sign a JWT token) authentication methods are used between Quarkus and OpenId Connect Provider, then an in-memory encryption key will be generated, which might cause some pods in the application dealing with a very large number of requests failing to decrypt the session cookie, because a given pod trying to decrypt it might not be the one which encrypted it.

In such cases one can register an encryption secret which should be 32 characters long, for example:

quarkus.oidc.token-state-manager.encryption-secret=eUk1p7UB3nFiXZGUXi0uph1Y9p34YhBU

Also note that an encrypted session cookie might exceed a 4096 bytes limit which will cause some browsers ignoring it. Try one of the following in such cases:

• Set quarkus.oidc.token-state-manager.split-tokens=true to have the ID, access and refresh tokens stored in separate cookies

• Set quarkus.oidc.token-state-manager.strategy=id-refresh-tokens if you do not need to use the access token as a source of roles or to request UserInfo or propagate it to the downstream services

• Register a custom quarkus.oidc.TokenStateManager CDI bean with the alternative priority set to 1. For example, custom quarkus.oidc.TokenStateManager can store all the tokens in a database and return a short DB pointer which Quarkus will use as a session cookie value.

If application users access the Quarkus application from within the trusted network, the session cookie encryption can be disabled:

quarkus.oidc.token-state-manager.encryption-required=false

SameSite is Lax by default for OIDC session cookie

In the 2.16.0 and 2.16.1 releases, in OIDC web-app applications, OIDC session cookie had a SameSite attribute set to Strict by default. However SameSite=Strict introduced unpredictability in the way the session cookie can be handled by different browsers. Therefore starting from 3.0, the session cookie will again have a SameSite=Lax attribute set by default.

If you do have a 2.16.0 or 2.16.1 based application working with the session cookie having SameSite=Strict attribute, then please add the following configuration: quarkus.oidc.authentication.cookie-same-site=strict

SmallRye Reactive Messaging

vertx-kafka-client dependency removed

Since the 2.12.0 release the vertx-kafka-client dependency from the smallrye-reactive-messaging-kafka extension is marked for removal. While not used for client implementations, this dependency provided default Kafka serdes for io.vertx.core.buffer.Buffer, io.vertx.core.json.JsonObject and io.vertx.core.json.JsonArray types, from the io.vertx.kafka.client.serialization package.

The 3.0 release removes this dependency. Serdes mentioned above are still provided from the io.quarkus.kafka.client.serialization package.

Split package resolution

SmallRye Reactive Messaging proposes an in-memory connector for testing purposes.

The usage of this connector caused a split-package issue because its classes are provided from the io.smallrye.reactive.messaging.providers.connectors. This is resolved by moving these classes to io.smallrye.reactive.messaging.memory package.

JAXB

The JAXB extension automatically detects the classes that are using JAXB annotations and registers these classes into the default JAXBContext. This default JAXBContext instance is validated at runtime when used, so if there are issues or conflicts with the classes and JAXB, you will get a JAXB exception with a proper description to help you troubleshoot the issue. In this release, you can validate the JAXBContext instance at build time to detect and fix the JAXB errors by adding the property quarkus.jaxb.validate-jaxb-context=true.

Moreover, we have added the property quarkus.jaxb.exclude-classes to exclude classes to be bounded to the JAXBContext. This property accepts either a comma-separated list of fully qualified class names, for example:

quarkus.jaxb.exclude-classes=org.acme.one.Model,org.acme.two.Model

Or a list of packages, for example:

quarkus.jaxb.exclude-classes=org.acme.*

In this example, the classes org.acme.one.Model and org.acme.two.Model won’t be automatically bounded to the default JAXBContext instance.

Testing

Removal of @io.quarkus.test.junit.NativeImageTest and @io.quarkus.test.junit.DisabledOnNativeImageTest annotations

These annotations were marked as deprecated for removal since Quarkus 2.8.0.Final and they were finally removed.

Use @io.quarkus.test.junit.QuarkusIntegrationTest and @io.quarkus.test.junit.DisabledOnIntegrationTest respectively instead.

Fixation of the Mockito subclass mockmaker

Quarkus 3.0 updates Mockito to 5.x and in 5.0.0 Mockito switched to the more flexible inline mockmaker by default. To preserve the mocking behavior users are used to since Quarkus 1.x and to avoid memory leaks for big test suites, Quarkus 3.0 fixates the mockmaker to subclass instead of inline until the latter is fully supported in later Quarkus 3.x releases.

If you really want to force the inline mockmaker:

1. add the following exclusion to your pom.xml:

   <dependency>
       <groupId>io.quarkus</groupId>
       <artifactId>quarkus-junit5-mockito</artifactId>
       <exclusions>
           <exclusion>
               <groupId>org.mockito</groupId>
               <artifactId>mockito-subclass</artifactId>
           </exclusion>
       </exclusions>
   <dependency>

2. add mockito-core to your dependencies (note: the mockito-inline artifact was removed in Mockito 5.3)

Keystore default password

Quarkus used "password" as the default password for JWT key and keystores. This default value has been removed. So, if you used "password" you now need to configure that password in the application.properties file:

quarkus.oidc-client.credentials.jwt.key-store-password=password
quarkus.oidc-client.credentials.jwt.key-password=password

Management interface

You can now expose the metrics and health endpoint on a separate HTTP server using quarkus.management.enabled=true. Note that for the endpoint exposed on that management interface, the paths are resolved differently:

• the root path is configured using quarkus.management.root-path; quarkus.http.root-path is only used for the main HTTP server

• the quarkus.http.non-application-root-path is not used for endpoints exposed on the management interface.

OpenTelemetry

Extension re-write

There are some major changes in the OpenTelemetry extension on Quarkus 3.0.

Before 3.0 the OpenTelemetry SDK (OTel SDK) was created at build time and had limited configuration options, most notably, it could not be disabled at runtime. This can now be done by setting: quarkus.otel.sdk.disabled=true Now, after some build time preparation steps, the OTel SDK itself is wired at runtime using the standard OTel Auto-configuration feature. This enables the usage of all Java OTel properties from upstream.

We tried to maximise backyards compatibility as much as possible.

Old properties are deprecated but, apart from the ones related with sampling, they will work transparently along with the new ones. We are mapping them during a short transition period.

These are the property changes:

Deprecated attribute	Property to use
quarkus.opentelemetry.enabled	quarkus.otel.enabled
quarkus.opentelemetry.tracer.enabled	quarkus.otel.traces.enabled
quarkus.opentelemetry.propagators	quarkus.otel.propagators
quarkus.opentelemetry.tracer.suppress-non-application-uris	quarkus.otel.traces.suppress-non-application-uris
quarkus.opentelemetry.tracer.include-static-resources	quarkus.otel.traces.include-static-resources
quarkus.opentelemetry.tracer.sampler	quarkus.otel.traces.sampler
quarkus.opentelemetry.tracer.sampler.ratio	quarkus.otel.traces.sampler.arg
quarkus.opentelemetry.tracer.exporter.otlp.enabled	quarkus.otel.exporter.otlp.enabled
quarkus.opentelemetry.tracer.exporter.otlp.headers	quarkus.otel.exporter.otlp.traces.headers
quarkus.opentelemetry.tracer.exporter.otlp.endpoint	quarkus.otel.exporter.otlp.traces.legacy-endpoint

For samplers the changes are:

If the sampler is parent based, there is no need to set, the now dropped property, quarkus.opentelemetry.tracer.sampler.parent-based.

The values you need to set on quarkus.opentelemetry.tracer.sampler are now:

Old Sampler config value	New Sampler config value	New Sampler config value (If Parent based)
on	always_on	parentbased_always_on
off	always_off	parentbased_always_off
ratio	traceidratio	parentbased_traceidratio

Many new properties are now available. Please check the guide.

We allowed the CDI configuration of many classes: IdGenerator, Resource attributes, Sampler and SpanProcessor. This is not available in standard OTel and we continue to provide this handy feature. However, we are deprecating the CDI creation of the SpanProcessor through our LateBoundBatchSpanProcessor. If you are overriding or customising it, please let us know. Currently we continue to use this processor to make sure backwards compatibility exists but we will soon move to use the standard exportes bundled with the OTel SDK.

This means default backwards compatible exporter is using this configuration: quarkus.otel.traces.exporter=cdi

As a preview, the stock OTLP exporter is now availably by setting: quarkus.otel.traces.exporter=otlp

We now provide additional configurations of the OTel SDK using their standard SPI hooks for Sampler and SpanExporter. The remaining SPIs are available but require testing to validate compatibility.

The OpenTelemetry Guide was also updated.

OpenTelemetry Upgrades

OpenTelemetry (OTel) 1.23.1 introduced breaking changes. Some of them are: - HTTP span names are now "{http.method} {http.route}" instead of just "{http.route}". - All methods in all Getter classes in instrumentation-api-semconv have been renamed to use the get() naming scheme - Semantic conventions changes:

Deprecated attribute	Property to use
messaging.destination_kind	messaging.destination.kind
messaging.destination	messaging.destination.name
messaging.consumer_id	messaging.consumer.id
messaging.kafka.consumer_group	messaging.kafka.consumer.group

The Full sets of changes can be checked here and here.

JDBC tracing activation

Before 3.0, to activate JDBC tracing, this configuration was used:

quarkus.datasource.jdbc.url=jdbc:otel:postgresql://localhost:5432/mydatabase
# use the 'OpenTelemetryDriver' instead of the one for your database
quarkus.datasource.jdbc.driver=io.opentelemetry.instrumentation.jdbc.OpenTelemetryDriver

Now, a much simpler configuration is required:

quarkus.datasource.jdbc.telemetry=true

This doesn’t require changing the db url or declare a different driver.

OpenTracing

• OpenTracing support has been deprecated since Quarkus 2.14. We encourage moving to OpenTelemetry as soon as possible. The OpenTracing support will be removed soon.

OpenAPI

• OpenAPI no longer enables a wildcard * CORS Origin support by default as it can leak OpenAPI documents. If you’d like, you can enable a wildcard Origin support in devmode.

Scheduler/Quartz

The quarkus.quartz.start-mode property is deprecated and should be replaced with quarkus.scheduler.start-mode. Note that the new Programmatic Scheduling API works in both: the quarkus-scheduler and the quarkus-quartz extensions, i.e. the start mode is a shared feature available in these extensions.

Dev tools

Maven versions

• The lowest supported Maven version has changed from 3.6.2 to 3.8.2 following a refactoring of the Quarkus Maven plugins to support Maven 3.9.

Removal of quarkus-bootstrap-maven-plugin Maven plugin

• The io.quarkus:quarkus-bootstrap-maven-plugin Maven plugin has been deprecated since 2.10.0.Final and no longer exists. If your extension uses it, you must change the artifact ID to io.quarkus:quarkus-extension-maven-plugin. The update recipe should also perform this change (see here)

MapStruct

If you are using the CDI component model in MapStruct, update your @Mapper(componentModel = "cdi") annotations to @Mapper(componentModel = "jakarta").