Apache Camel 4.5 has just been released.
This release introduces a set of new features and noticeable improvements that we will cover in this blog post.
Camel Core
When using Kamelets and/or Rest DSL then Camel will now hide their intermediate routes and only show user routes. The number of routes that Camel logs on startup is thus only the number of user routes. This also avoids cluttering up the list of routes in monitoring and management tools.
Camel Main
We added the concept of profile to running Camel standalone or via camel-jbang. For example camel-jbang runs in dev profile by default, and camel-main would run in prod profile by default.
Using profiles allows you to have profile-specific application.properties files, such as application-dev.properties that can provide environment-specific configuration, for example hostname, username and passwords for connecting to systems. To make it quick and easy to have settings for development, and then avoid having to remove those when building for UAT or production.
Camel JBang
We fixed some issues using Camel JBang with Windows, but we would still like more feedback from Windows users.
Added /q/info as HTTP console to show some basic information about the Camel application.
Camel Catalog
We now generate more metadata for every Camel release and have added the following information into camel-catalog, that can be useful for Camel tooling such as Karavan and Kaoto:
dev-consoles- Provides a list of all available developer consolestransformers- Provides a list of all cloud event transformers (Camel K pipes)beans- Provides a list of all miscellaneous beans such asAggregationRepository,IdempotentRepositoryand all the options. (For example to know that Camel offers a Redis idempotent repository).
Camel Micrometer
Added context level metrics as well, so you have combined metrics for the entire Camel application.
Adjusted the tags in the metrics to be shorter. See the upgrade guide for more details.
OpenAPI v2
Support for OpenAPI v2 (swagger) has been removed. Use OpenAPI v3 spec instead. You can use online coverter tools such as: https://converter.swagger.io/
Miscellaneous
The camel-spring-rabbitmq can now automatically bind and create if setting autoDeclareProducer=true for the producers as well.
The camel-yaml-dsl can now set error handler on the route level as well. Previously you had to do this via route configuration.
The camel-kafka has been upgraded to Kafka Client 3.7.
The documentation has many grammar, typo and cosmetic changes.
Upgraded many third-party dependencies to the latest releases at the time of release.
New Components
We have added some new AI based components and support for wasm and jolokia.
camel-aws-bedrock- Invoke Model of AWS Bedrock service.camel-aws-bedrock-agent- Operate on AWS Bedrock through its Agent.camel-aws-bedrock-agent-runtime- Invoke Model of AWS Bedrock Agent Runtime service.camel-langchain-chat- LangChain4j Chat componentcamel-langchain-embeddings- LangChain4j Embeddingscamel-milvus- Perform operations on the Milvus Vector Database.camel-qdrant- Perform operations on the Qdrant Vector Database.camel-wasm- Call a wasm (web assembly) function.camel-platform-http-jolokia- Jolokia plugin for standalone Camel HTTP Platform
Upgrading
Make sure to read the upgrade guide if you are upgrading from a previous Camel version.
If you are upgrading from, for example, 4.0 to 4.4, then make sure to follow the upgrade guides for each release in-between, i.e. 4.0 -> 4.1, 4.1 -> 4.2, and so forth.
Release Notes
You can find more information about this release in the list of JIRA tickets resolved in the release:
Roadmap
The following 4.6 release (non LTS) is planned for May 2024.