Apache camel 4.0.0-RC2 Release

New and Noteworthy

This release is the second release candidate towards the Camel 4.0.0 release.

Supported Java version

This version supports Java 17.

Getting the Binaries using Maven

To use this release in your Apache Maven pom.xml, import the Camel Bill of Materials (BOM) and then include the camel-core and any other components needed without specifying the version.

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-bom</artifactId>
      <version>4.0.0-RC2</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-core</artifactId>
  </dependency>
  <dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-COMPONENT</artifactId>
  </dependency>
</dependencies>

To use this release in a Spring Boot application, use Spring Boot spring-boot-dependencies and Camel camel-spring-boot-bom Bill of Materials (BOM):

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-dependencies</artifactId>
      <version> SPRING BOOT VERSION HERE </version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.camel.springboot</groupId>
      <artifactId>camel-spring-boot-bom</artifactId>
      <version>4.0.0-RC2</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>org.apache.camel.springboot</groupId>
    <artifactId>camel-COMPONENT-starter</artifactId>
  </dependency>
</dependencies>

Apache Camel

Download	Signature and checksum
apache-camel-4.0.0-RC2-src.zip (Sources)	PGP Signature, SHA512 Checksum

Download

Signature and checksum

apache-camel-4.0.0-RC2-src.zip (Sources)

PGP Signature, SHA512 Checksum

Git tag checkout

Release is tagged with camel-4.0.0-RC2 in the Git, to fetch it use:

git clone https://git-wip-us.apache.org/repos/asf/camel.git
cd camel
git checkout camel-4.0.0-RC2

Resolved issues

Here is a list of all the issues that have been resolved for this release

Bug (8)

CAMEL-19607: camel-core - Checking redelivery reference while error handler creation
CAMEL-19603: Spring Boot and Quarkus runtimes: @PeriodicTask annotated task are not running even if scheduled
CAMEL-19570: Kafka max.poll.interval.ms declared in Long and not Integer
CAMEL-19569: [observability|opentelemetry].CurrentSpanTest.testContextDoesNotLeak() fail on Github Actions
CAMEL-19568: camel-mail - HTTP/2 Multipart boundary
CAMEL-19566: Camel micrometer documentation shows wrong parameter value name for summary
CAMEL-19511: camel-spring-boot - Register properly auto-configurations
CAMEL-19343: Predicates are shared between templated routes in Java DSL with simple predicate builder

Dependency upgrade (13)

CAMEL-19625: maven - Upgrade to plexus-utils 4.x
CAMEL-19624: Upgrade Derby used for testing
CAMEL-19614: camel-openapi-rest-dsl-generator - Upgrade apicurio-data-models
CAMEL-19612: camel-arangodb - Upgrade to 7.x
CAMEL-19610: camel-rocketmq - Upgrade to rocket v5
CAMEL-19606: camel-spring-boot - Upgrade to 3.1.2
CAMEL-19605: camel-xchange - Upgrade to xchange 5.1.0
CAMEL-19596: camel-javascript - Upgrade to graalvm 23.0
CAMEL-19595: camel-kotlin - Upgrade to 1.9
CAMEL-19594: camel-jbang - Upgrade to hawtio 2.17.5
CAMEL-19589: camel-test - Upgrade testcontainers to 1.18.x
CAMEL-19581: camel-jbang - Upgrade to picocli 4.7.4
CAMEL-19442: Manage Gson to build and test with a single deterministic version

Improvement (21)

CAMEL-19616: camel-restdsl-openapi-plugin - Do not use servlet as component by default
CAMEL-19615: camel-ftp: chmodDirectory option try for each junk to change the directory permission and fails
CAMEL-19602: components - Add metadata for an option that refers to a file resource for tooling
CAMEL-19592: camel-jbang - Export to camel-main should include platform-http for rest-dsl
CAMEL-19587: camel-jira: optional header field IssueAssignee doesn't work
CAMEL-19586: camel-parquet-avro - Allow users to unmarshal Parquet file into Avro's GenericRecords
CAMEL-19585: camel-jbang - Report if dependency was downloaded or resolved
CAMEL-19583: Lack of multiple shards consumption of Camel aws2 Kinesis
CAMEL-19580: camel-catalog-maven - Add getClassLoader API
CAMEL-19573: Stop syncing version properties in git, generate the effective camel-dependencies during the build
CAMEL-19560: Manage micrometer artifacts to build and test with a single deterministic set of versions
CAMEL-19559: Manage commons-codec to build and test with a single deterministic version
CAMEL-19558: Manage protobuf to build and test with a single deterministic version
CAMEL-19496: Manage single version of Guava
CAMEL-19466: Skip Maven mojos in the fast profile properly
CAMEL-19121: camel-jbang - Adapt to Camel v4
CAMEL-19063: Find a replacement library for abdera & axiom in camel-atom & camel-rss
CAMEL-18261: Add connection parameters to MongoDB component
CAMEL-15978: camel-xmpp - Upgrade to 1.0.x
CAMEL-14104: Update FHIR to latest version
CAMEL-13611: Camel Web3j - Upgrade to Web3j 4.3.1

New Feature (7)

CAMEL-19601: camel-core - Limit auto conversion when stream caching is enabled
CAMEL-19599: camel-jbang - Export to camel-main - Add support for Kubernetes
CAMEL-19593: camel-main - Standalone web console
CAMEL-19584: Camel aws2 Kinesis Asynchronous Client
CAMEL-18916: camel-xslt-saxon: allow logger injection
CAMEL-18837: Component for Opensearch
CAMEL-16479: Camel-AWS-Kinesis: The consumer should be able to consume from multiple shards at the same time

Task (19)

CAMEL-19643: apache-camel - RC2 should include source tarball
CAMEL-19634: camel-zeebe - Only download from Maven central
CAMEL-19632: camel-xml-jaxp: Split package warning
CAMEL-19630: camel-hyperledger-aries - Remove
CAMEL-19629: camel-weka - Remove this component
CAMEL-19628: Restrict downloading JARs from Atlassian Maven
CAMEL-19621: camel-elytron - Deprecate this component
CAMEL-19600: camel-atom: investigate potential test cleanups
CAMEL-19563: Investigate usages of raw types
CAMEL-19510: camel-spring-boot-examples - Fix the reactive-streams
CAMEL-19465: Move Apache snapshots repository to a separate Maven profile for better build reproducibility
CAMEL-19446: camel-caffeine: investigate potential test cleanups
CAMEL-19445: camel-caffeine: cleanup assertions
CAMEL-19444: camel-kafka: fix grammar errors on the documentation
CAMEL-19438: camel-sftp: tests cause entry pollution on user's known hosts file
CAMEL-19355: maven wrapper - Upgrade to 3.9.2
CAMEL-18876: ErrorHandlerDefinition properties missing in camel-catalog
CAMEL-18540: camel-atom: component depends on deprecated artifacts
CAMEL-17328: Avoid 3rd party maven repository - jboss

Test (2)

CAMEL-19609: camel-test-infra-hdfs: infra is not container-based
CAMEL-19604: camel-knative: component is likely broken

Keys

You can verify your download by following these procedures and using these KEYS.