Apache camel 4.2.0 Release

New and Noteworthy

This release is the new Camel 4.2.0 release.

Supported Java version

This version supports Java 17 and 21.

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>4.2.0</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>4.2.0</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-4.2.0-src.zip (Sources)	PGP Signature, SHA512 Checksum
apache-camel-4.2.0-sbom.xml (SBOM, CycloneDX XML)	PGP Signature, SHA512 Checksum
apache-camel-4.2.0-sbom.json (SBOM, CycloneDX JSON)	PGP Signature, SHA512 Checksum

Download

Signature and checksum

apache-camel-4.2.0-src.zip (Sources)

PGP Signature, SHA512 Checksum

apache-camel-4.2.0-sbom.xml (SBOM, CycloneDX XML)

PGP Signature, SHA512 Checksum

apache-camel-4.2.0-sbom.json (SBOM, CycloneDX JSON)

PGP Signature, SHA512 Checksum

Git tag checkout

Release is tagged with camel-4.2.0 in the Git, to fetch it use:

git clone https://git-wip-us.apache.org/repos/asf/camel.git
cd camel
git checkout camel-4.2.0

Resolved issues

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

Bug (29)

CAMEL-21288: Log processor causing memory leak in split for very large data sets
CAMEL-20099: Camel-http is creating invalid Content-Encoding header based on charset from Content-Type header
CAMEL-20092: camel-core - ScheduledPollConsumer should reset error count when greedy
CAMEL-20086: Camel JBang loosing kamelets-version setting when using camel-version
CAMEL-20079: EndpointDslMojo generates wrong header names
CAMEL-20076: camel-jbang - Should skip jkube.yaml files
CAMEL-20054: camel-kubernetes - Configuration of Kubernetes secrets with Camel K not working as expected
CAMEL-20053: camel-jira: watchUpdates consumer does not see issues created after route startup
CAMEL-20037: camel-http builds StringEntity with wrong contentEncoding
CAMEL-20035: Program terminates with OutOfMemoryError
CAMEL-20033: Camel JBang dependency is not supporting Windows path with Camel files written in Java
CAMEL-20032: camel-yaml-dsl - Choice should not have steps in schema
CAMEL-20031: camel-yaml-dsl: Description property have incorrect title and description
CAMEL-20028: camel-mail - Missing attachments if disposition not set
CAMEL-20023: camel-file - File readLock changed minAge issue
CAMEL-20017: camel-yaml-dsl - ExchangeProperty language is duplicated in yaml schema
CAMEL-20010: camel-sql - Can't change table name in JdbcMessageIdRepository by adding suffix/prefix
CAMEL-20001: Overriden properties ignored with SpringPropertiesParser
CAMEL-20000: camel-flatpack DataSetList iterator iterates only once
CAMEL-19996: camel-lra NullPointerException when creating a saga with invalid lra-url
CAMEL-19982: camel-jbang - Run with --jvm-debug as last parameter does not work
CAMEL-19975: NIOConverter File to ByteBuffer conversion behavior is potentially non-deterministic
CAMEL-19970: camel-jbang - IllegalArgumentException: Unable to determine file extension for resource when a file has no extension
CAMEL-19968: camel-opentelemetry - The Tracing Strategy is failing when using pollEnrich with seda endpoint
CAMEL-19967: camel-core - Default RouteConfigurationBuilder written in Java not enabled on XML routes
CAMEL-19828: camel-twilio: conversion to PhoneNumber, .. fails after recent general converter change
CAMEL-19827: Kafka Component generates huge logs infinitely when invalid configuration is provided.
CAMEL-19068: SagaPropagationTest#testPropagationSupports fails with "Cannot begin: status is COMPLETED"
CAMEL-18760: camel-kafka - Issue using ThrottlingExceptionRoutePolicy with Kafka consumer

Dependency upgrade (20)

CAMEL-20075: camel-kubernetes - upgrade to 6.9.2
CAMEL-20074: Bump google-cloud-secretmanager-bom to version 2.29.0
CAMEL-20073: Bump google-cloud-functions-bom to version 2.31.0
CAMEL-20072: Upgrade Google Cloud BOM to version 26.26.0
CAMEL-20069: Upgrade Azure SDK BOM to version 1.2.18
CAMEL-20063: camel-jbang - Upgrade to kamelets 4.1.0
CAMEL-20052: Upgrade Quarkus to 3.5.0 in Camel JBang to align with Camel Quarkus compatible with Camel 4.1+
CAMEL-20049: camel-activemq - Upgrade to latest releases
CAMEL-20006: Upgrade Google Cloud Functions BOM to version 2.30.0
CAMEL-20005: Upgrade Google Secrets Manager BOM to version 2.28.0
CAMEL-20003: Upgrade Google Cloud BOM to version 26.25.0
CAMEL-19992: Upgrade bytebuddy that can support Java 21
CAMEL-19990: camel-spring-boot - Upgrade to 3.1.5
CAMEL-19980: Upgrade Infinispan to version 14.0.18.Final
CAMEL-19979: Upgrade Vertx to version 4.4.6
CAMEL-19978: Upgrade Netty to 4.1.100.Final
CAMEL-19966: Upgrade Testcontainer to version 1.19.1
CAMEL-19965: Camel-Plc4x: Upgrade to 0.11.0
CAMEL-19963: camel-tooling-maven - Upgrade to resolver 1.9.16
CAMEL-19638: Upgrade mockito to v5

Improvement (37)

CAMEL-20087: Backport data types from Kamelet utils to Camel
CAMEL-20085: camel-aws - Sqs consumer throws unhandled exception during deleteMessage, should be caught by exception handler in consumer
CAMEL-20081: camel-dynamic-router eip compnent: use existing multicast processor instead of custom impl
CAMEL-20080: Removal of getExtentions() is not mentioned in migration guide to Camel 4
CAMEL-20077: camel-core - Message history should be captured after debugger
CAMEL-20071: camel-core - Backlog debugger must have node ids auto assigned eager to allow setting breakpoints on startup
CAMEL-20070: camel-core: avoid unnecessary matching lookup
CAMEL-20065: camel-core - BacklogDebugger as SPI
CAMEL-20064: camel-main - Configure debugger options
CAMEL-20061: SMPP interface version cannot be set from 3.4 to latest version 5.0, even though underlying library jSMPP supports versions 3.3, 3.4, and 5.0
CAMEL-20060: Add Azure SAS support for azure blob storage
CAMEL-20048: camel-core - Find single bean by type should use consistent method
CAMEL-20042: camel-sql, use primary spring data source by default
CAMEL-20039: camel-core - SimpleLRUCache add support for soft cache
CAMEL-20038: camel-core - Deprecate LRUWeakCache
CAMEL-20026: camel-jbang - Export allow to configure jib-maven-plugin version
CAMEL-20025: camel-aws - Should we make region an enum
CAMEL-20024: camel-core-model - Add description for new registry bean model
CAMEL-20016: camel-lra - Allow accessing Exchange in LRAClient
CAMEL-20013: AdviceWith requires camel-xml-io
CAMEL-20011: camel-vertx: Avoid usage of deprecated Vertx.executeBlocking(Handler<Promise<T>>)
CAMEL-20004: camel-core - DataTypeTransformer should be JdkService
CAMEL-20002: camel-core: Make it easier to extend DefaultInjector
CAMEL-19999: camel-bean - Allow to configure bean introspection cache on component
CAMEL-19998: camel-core: cleanup cyclic dependencies in the AbstractCamelContext
CAMEL-19997: camel-cifs: new component for the Common Internet File System
CAMEL-19988: camel-core - PropertyBindingSupport - Should not hide IllegalArgumentException with real cause if failing to set property
CAMEL-19987: camel-core - Optimize EndpointHelper.matchEndpoint to avoid regexp
CAMEL-19977: camel-core - Java DSL to support text blocks for URI endpoints
CAMEL-19905: camel-platform-http-vertx - Streaming mode for message body
CAMEL-19830: camel-seda: investigate improvements and cleanups
CAMEL-19707: camel-aws2-s3 multipart uploads crash with zero-byte files
CAMEL-19437: Provide a profile to activate Camel Route debugger when generating Camel Quarkus project with Camel JBang export
CAMEL-19398: camel-core: type converter performs slowly due to exception-based flow control
CAMEL-17040: rest-dsl - Add option to return http 204 when no data in response
CAMEL-15211: camel-main - Allow to configure SSL context parameters
CAMEL-8306: rest-dsl - Add support for wildcards to match on prefix

New Feature (13)

CAMEL-20088: Camel-Azure-Schema-Registry component: Moving the bits from camel-kamelets and have a non-classic component
CAMEL-20083: camel-opentelemtry - Make it easier to configure for camel-main
CAMEL-20082: camel-jbang - Export to support javaagents
CAMEL-20078: camel-jbang - Debug command
CAMEL-20057: camel-azure - Allow to send binary files to azure service bus
CAMEL-20050: camel-spring - Add support for @Primary spring bean autowiring
CAMEL-20036: Provide endpoint producer builder for https endpoints
CAMEL-19995: camel-jbang - Run and reload from clipboard
CAMEL-19994: camel-platform-http-vertx - Allow access to vertx request object
CAMEL-19945: camel-core - Add bean as property placeholder function
CAMEL-19907: Introduce the ability to use the old Micrometer meter names or follow the new Micrometer naming conventions
CAMEL-19085: camel-main - Allow to configure SSLContextParameters
CAMEL-18637: camel-http - support OAuth 2.0

Sub-task (1)

CAMEL-20008: Java 21 - Test failures related to xml attribute order

Task (18)

CAMEL-20084: Create a Camel-SMB Spring Boot Starter
CAMEL-20066: camel-language - Missing examples in docs
CAMEL-20062: camel-core: type converter refactoring is causing a split package warning on Quarkus
CAMEL-20051: camel-core: fallback conversions are not cached
CAMEL-20043: Micrometer: unclear instructions of docInstrumentedThreadPoolFactory configuration in the documentation
CAMEL-20030: camel-xslt-saxon - Non-working link in docs
CAMEL-20029: camel-language - Missing examples in docs
CAMEL-20022: camel-yaml-dsl: Add WARN log if kebab-case is detected
CAMEL-19986: tests: create throtling executor
CAMEL-19983: Camel-micrometer: Spring should not be mentioned as a part of the examples in the doc
CAMEL-19974: camel-examples - Add missing descriptions
CAMEL-19962: Camel-Azure-Datalake: Headers metadata are wrong
CAMEL-19955: Camel-Infinispan: Review the usage of Protostream sample domain definition and implementation in tests
CAMEL-19757: camel-examples - Move examples to root folder
CAMEL-19557: camel-core: ensure tests have assertions
CAMEL-19541: camel-quartz: replace Thread.sleep in tests
CAMEL-19536: camel-micrometer: replace Thread.sleep in tests
CAMEL-19526: camel-jms: replace Thread.sleep in tests

Test (4)

CAMEL-20098: camel-core - Flaky test using AbstractJsseParametersTest
CAMEL-19993: camel-core - Fix XMLTokenizer tests for Java 21
CAMEL-19958: Java 21 - Test failures on CI server
CAMEL-18998: camel-ftp: FromFileToFtpSplitParallelIT tests a hanging up

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