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new cd909d0 Camel 3.16 whats new blog. (#809)
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commit cd909d0c634ac29f68cbc5eac1d793d3d22d8aa6
Author: Claus Ibsen <[email protected]>
AuthorDate: Mon Mar 28 18:24:04 2022 +0200
Camel 3.16 whats new blog. (#809)
* Camel 3.16 whats new blog.
* Added notes for resume API, camel-kafka and camel-test-infra
* Fixed links to the resume-api and camel-test-infra blog posts
* Add an example of how to create a route from a route template in the
supported DSL
* Add some more details about the metadata of component headers
* Add a note about the status of the documentation of the headers
* Added a little intro to Secrets loading from cloud services
* Polished
* Fix Otavio username
* fixed href
Co-authored-by: Otavio Rodolfo Piske <[email protected]>
Co-authored-by: Nicolas Filotto <[email protected]>
Co-authored-by: Andrea Cosentino <[email protected]>
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+---
+title: "Apache Camel 3.16 What's New"
+date: 2022-03-28
+authors: [davsclaus, orpiske, essobedo, oscerd]
+categories: ["Releases"]
+preview: Details of what we have done in the Camel 3.16 release.
+---
+
+Apache Camel 3.16 has just been [released](/blog/2022/03/RELEASE-3.16.0/).
+
+This release introduces a set of new features and noticeable improvements that
we will cover in this blog post.
+
+### Resume from Offset
+
+This release brings a new API to simplify consuming data at scale: the resume
API V2. Please check the [blog post](/blog/2022/03/resume-api-v2/) we wrote to
introduce it to our community.
+
+### Load properties from valut/secrets cloud services
+
+This release brings a new feature: the ability to retrieve properties values
from a Vault/Secrets cloud services.
+We are currently supporting AWS Secret manager service and Google Secret
Manager, but we are planning to add more.
+
+See more details at the following [blog
post](/blog/2022/03/secrets-properties-functions/)
+
+### Camel Main
+
+We added base package scanning support when running a Camel Main application,
that
+makes it easier to auto-discover Camel routes, configuration classes, type
converters,
+and other classes using dependency injections.
+
+A new `camel-test-main` module added to make it easier to unit test Camel Main
based applications.
+
+### Camel JBang
+
+We continue to innovate and make running Camel quickly and easily with JBang
better and better.
+Now `camel-jbang` supports reloading `.properties` files in reload mode.
+
+We also added support for loading `.java` source containing custom POJOs,
processors,
+or type-converters which can be reloaded. This allows users to modify the
source code,
+and let `camel-jbang` hot re-load changes.
+
+The `camel-jbang` now also supports Camel K _modeline_ configurations, and
other parts
+from Camel K & Kamelets, that makes camel-jbang more on-par with Camel K and
makes it possible to
+run many more Camel K files out-of-the-box.
+
+And we also made `camel-jbang` auto download DSLs, so for example It's
possible to run a kotlin
+source file and automatic download the needed `camel-kotlin-dsl` JAR.
+
+A preliminary support for using dependency injection annotations from Spring,
Quarkus, and CDI
+has been added, which bridges the gap between camel-jbang and using Camel K,
Camel Spring Boot,
+or Camel Quarkus. The intention is to allow getting started with building
Camel integrations
+using `camel-jbang` / [Camel Karavan](https://github.com/apache/camel-karavan)
and then
+later transition to a regular Camel on Spring Boot or Quarkus project.
+We will continue working on this story for upcoming releases.
+
+See more details at the [Camel JBang documentation](/manual/camel-jbang.html)
+
+### Camel UI Designer
+
+The [Camel Karavan](https://github.com/apache/camel-karavan) project is
progressing nicely, and during the development we have identified
+a number of _mistakes_ in the route model in Camel that has been improved and
corrected.
+
+This overall makes it easier to build custom Camel tooling as there are less
_model hacks_ you may need to
+implement in the tool.
+
+The changes to the model may affect users when upgrading, so make sure to read
the [upgrade guide](/manual/camel-3x-upgrade-guide-3_16.html).
+
+### Camel Health Checks
+
+The `camel-health` has been overhauled to be made simpler to implement custom
health-checks.
+
+### Camel Route Templates
+
+The XML, Spring XML, Java and YAML DSL now also support creating routes from
route templates.
+
+Assuming that you have a simple route template whose id is `someTemplate` with
one template parameter `message`, according to the DSL of your choice, you can
create a new route from this template as next:
+
+In Java DSL
+```java
+templatedRoute("someTemplate")
+ .parameter("message", "Hello Camel templated route!");
+```
+
+In Spring XML DSL
+```xml
+<camelContext>
+ <templatedRoute routeTemplateRef="someTemplate">
+ <parameter name="message" value="Hello Camel templated route!"/>
+ </templatedRoute>
+</camelContext>
+```
+
+In XML DSL
+```xml
+<templatedRoutes xmlns="http://camel.apache.org/schema/spring";>
+ <templatedRoute routeTemplateRef="someTemplate">
+ <parameter name="message" value="Hello Camel templated route!"/>
+ </templatedRoute>
+</templatedRoutes>
+```
+
+In YAML DSL
+```yaml
+- templated-route:
+ route-template-ref: "someTemplate"
+ parameters:
+ - name: "message"
+ value: "Hello Camel templated route!"
+```
+
+### Component Headers
+
+Most of the components produce or consume headers so like endpoints' options,
it was important to provide some tooling to generate the documentation of the
headers in a standardized way.
+
+For this, we added a new element called `headersClass` to the annotation
`@UriEndpoint` in order to provide the class that holds all the name of headers
as `String` constants. Generally, it is the class whose name is of type
*xxxConstants* where *xxx* is the name of the corresponding component like for
example `FtpConstants` for the component camel-ftp.
+
+Then, in the headers class, each constant defining the name of a header, is
then annotated with `@Metadata` to provide its documentation like for the
options.
+
+We started [^1] marking up all headers in every component for automatic
generation of documentation, but also to expose the metadata of the headers to
external tools.
+
+[^1]: For now, only the headers of components whose name starts with A to G
have been documented.
+
+### Camel Kafka
+
+We added specific health-checks for kafka producer and consumers that checks
the kafka-client
+internals if the connectivity with the kafka brokers is healthy or not.
+
+We did other bug fixes, and we continue to make the camel-kafka component more
robust. In this release we fixed offset management issues. Please check the
release notes for details.
+
+### Quarkus
+
+The upcoming Camel Quarkus 2.8 release will be upgraded to Camel 3.16.
+
+### Spring Boot
+
+We have upgraded to the latest Spring Boot 2.6 release.
+
+Added more unit tests to various starter JARs to increase the QA of this
project.
+
+## Deprecated Components: Camel Testcontainers
+
+In this release we are replacing the camel-testcontainers components with the
camel-test-infra. These new set of test-related components simplify integration
testing with Camel, allow us to test edge case scenarios more easily, reduce
our maintenance effort and more. Please check the [blog
post](/blog/2022/02/camel-test-infra/) where we explained about the changes.
+
+## Upgrading
+
+Make sure to read the [upgrade
guide](/manual/camel-3x-upgrade-guide-3_16.html) if you are upgrading from a
previous Camel version.
+
+## Release Notes
+
+You can find more information about this release in the with a list of JIRA
tickets resolved in the release:
+
+- [release notes 3.16](/releases/release-3.16.0/)
+
