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new d3cc57a7 Camel 4.3 whats new WIP (#1107)
d3cc57a7 is described below
commit d3cc57a77ca9da6c35a756627023abbb3b6ceb3a
Author: Claus Ibsen <[email protected]>
AuthorDate: Mon Dec 18 19:41:50 2023 +0100
Camel 4.3 whats new WIP (#1107)
* Camel 4.3 whats new WIP
* Camel 4.3 whats new WIP
* Camel 4.3 whats new WIP
* Camel 4.3 whats new WIP
* Camel 4.3 whats new WIP
* Camel 4.3 whats new WIP
* Added a little SBOM section in 4.3.0 what's new
Signed-off-by: Andrea Cosentino <[email protected]>
* Camel 4.3 whats new WIP
---------
Signed-off-by: Andrea Cosentino <[email protected]>
Co-authored-by: Andrea Cosentino <[email protected]>
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+---
+title: "Apache Camel 4.3 What's New"
+date: 2023-12-18
+authors: [davsclaus,gzurowski,orpiske,apupier,oscerd]
+categories: ["Releases"]
+preview: Details of what we have done in the Camel 4.3 release.
+---
+
+Apache Camel 4.3 (non LTS) has just been
[released](/blog/2023/12/RELEASE-4.3.0/).
+
+This release introduces a set of new features and noticeable improvements that
we will cover in this blog post.
+
+## Camel Core
+
+Added basic support for Java 21 virtual threads. Note this is experimental and
there is more work to complete
+to have full support for virtual threads. More details at [threading
model](/manual/threading-model.html).
+
+The simple language can now work better with JSon and XML with inlined
jq/jsonpath/xpath functions. This
+can be used for basic message transformation. You can find an examples at:
+
+- [json
transformation](https://github.com/apache/camel-kamelets-examples/tree/main/jbang/json-transform)
+- [xml
transformation](/components/next/languages/xpath-language.html#_transforming_a_xml_message)
+
+We added `debugStandby` option to allow route debugging a running Camel
application on demand. Being in standby mode
+has no overhead and only when debugging is activated then Camel runs in
debugging mode, which can then be deactivated
+to go back to run in normal mode.
+
+## Camel Main
+
+Added support for Prometheus in the new `camel-micrometer-prometheus`
component, that makes it possible to expose
+metrics in Prometheus format, as shown below:
+
+
+
+This can be configured in `application.properties`:
+
+- Micrometer and Prometheus options using `camel.metrics.`
+
+## DSL
+
+We added the following EIPs:
+
+- `setHeaders` EIP to make it easier and less verbose to set multiple headers
from the same EIP.
+- `convertHeaderTo` EIP to make it easy to convert header value to a specific
type.
+
+The `throttler` EIP has been refactored to throttle based on concurrent
requests instead of sliding window.
+
+We improved configuring beans, that can now support builder beans, that are
used to build the actual bean.
+For example in the following YAML notice how the `builderClass` refers to
class responsible for building the target bean:
+
+```yaml
+- beans:
+ - name: myCustomer
+ type: com.mycompany.Customer
+ builderClass: com.mycompany.CustomerBuilder
+ properties:
+ name: "Acme"
+ street: "Somestreet 42"
+ zip: 90210
+ gold: true
+- from:
+ uri: "timer:yaml"
+ parameters:
+ period: "5000"
+ steps:
+ - bean:
+ ref: myCustomer
+ method: summary
+ - log: "${body}"
+```
+
+The builder class is required to have a build method that Camel invokes. The
name of the method is `build` by default.
+
+To see more see the following examples:
+
+-
https://github.com/apache/camel-kamelets-examples/tree/main/jbang/bean-builder
+-
https://github.com/apache/camel-kamelets-examples/tree/main/jbang/bean-inlined-code
+
+## Camel JBang (Camel CLI)
+
+We have continued investing in Camel JBang, and this time we have some great
new stuff in the release.
+
+We have added support for using JBang style for declaring dependencies by
using `//DEPS ` code comments, as shown
+in the following Java file:
+
+```java
+//DEPS org.apache.camel:camel-bom:4.3.0@pom
+//DEPS org.apache.camel:camel-endpointdsl
+//DEPS org.apache.camel:camel-kubernetes
+//DEPS org.apache.camel:camel-aws2-s3
+
+import org.apache.camel.builder.endpoint.EndpointRouteBuilder;
+
+public class foo extends EndpointRouteBuilder {
+
+ @Override
+ public void configure() {
+ from(timer("trigger").delay(1000).repeatCount(1))
+ // something that may use Java APIs from Kubernetes
+ }
+}
+```
+
+You can now also easily use JBang way of editing source code in your favorite
editor, such as `jbang edit -b foo.java`,
+shown in the screenshot below:
+
+
+
+You can find an example at [jbang-edit
example](https://github.com/apache/camel-kamelets-examples/tree/main/jbang/jbang-edit).
+
+Another new functionality is the _live message transformer_ with the new
`camel transform message` command.
+You can find detailed information in the [camel-jbang
docs](/manual/camel-jbang.html#_transforming_message_data_mapping),
+and a basic example here [json
transformation](https://github.com/apache/camel-kamelets-examples/tree/main/jbang/json-transform).
+
+We have improved the `camel export` to avoid starting some services that was
not needed, which could potentially
+cause the export to tail or take longer time.
+
+Camel JBang now accurately reports resolved vs download for dependency
resolution. Previously it may report downloading
+but the dependency was resolved from local disk. You can also run in
`--verbose` mode that shows verbose details
+for dependency resolution that can be useful for troubleshooting.
+
+Camel JBang export to `camel-main` can now configure authentication for
container image registries.
+
+## Spring and Spring Boot
+
+Upgraded to latest [Spring Boot
3.2.0](https://spring.io/blog/2023/11/23/spring-boot-3-2-0-available-now)
release.
+
+The health checks in Camel now incorporate with the Spring Boot way of doing
readiness and liveness check.
+
+## SBOM
+
+Starting from releases 4.0.3 and 4.2.0, we started to publish JSON and XML
SBOM in the Camel website download section. An SBOM is a “software bill of
materials” and in recent years has emerged as a key building block in software
security and software supply chain risk management. An SBOM is a nested
inventory, which means you could have an overview of all the components of your
software.
+
+In combination with other tools, the SBOM could be analyzed against the CVEs
Database and anyone could be able to have a security analysis always
up-to-date. We plan to include SBOMs in all of our releases and the work has
already started.
+
+This is of particular interest for a project like Camel because we are using a
large number of dependencies (direct and transitive) in our projects and it’s
really hard to track everything. From the community perspective, this could
also be a good entry point for new contributors to periodically have a look at
new CVEs and try to fix them.
+
+## Miscellaneous
+
+The `camel-hdfs` component has been deprecated and planned for removal soon.
The Apache Hadoop project is unfortunately
+not offering client JARs with a limited set of dependencies, which leads to a
giant dependency set that have many
+old versions that has known CVEs.
+
+The `camel-file` and `camel-ftp` components can now also write SHA checksum
file, when uploading files.
+
+The `camel-jetty` component has been upgraded from Jetty 10 to 12.
+
+The `camel-openapi-java` now better support both OpenAPI 3.0 and 3.1 at the
same time.
+
+Components such as `camel-ftp` and others that can take a long time on first
poll, will now report as ready
+more eager in readiness check. Before they would become ready after first poll
completed; this could cause
+problems if downloading a large FTP file takes a long time, causing the
readiness check to fail on startup.
+
+Upgraded many 3rd party dependencies to latest release at time of release.
+
+## New Components
+
+- `camel-aws-config` - Manage AWS Config service.
+- `camel-elasticsearch-rest-client` - Perform queries and other operations on
Elasticsearch or OpenSearch (uses low-level client).
+- `camel-kubernetes-cronjob` - Perform operations on Kubernetes CronJob.
+- `camel-micrometer-prometheus` - Camel Micrometer Prometheus for Camel Main
+- `camel-smb` - Receive files from SMB (Server Message Block) shares.
+
+## Upgrading
+
+Make sure to read the [upgrade guide](/manual/camel-4x-upgrade-guide-4_3.html)
if you are upgrading from a previous Camel version.
+
+## Release Notes
+
+You can find more information about this release in the list of JIRA tickets
resolved in the release:
+
+- [Release notes 4.3](/releases/release-4.3.0/)
+
+## Roadmap
+
+The following 4.4 release (LTS) is planned for February 2024.
+
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