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new 63d9929b Blog post about whats new in 4.1 release. WIP (#1073)
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commit 63d9929b6c4bbcddbfc2d8e70c864700aebc183d
Author: Claus Ibsen <[email protected]>
AuthorDate: Thu Oct 12 14:28:09 2023 +0200
Blog post about whats new in 4.1 release. WIP (#1073)
* Blog post about whats new in 4.1 release. WIP
* Blog post about whats new in 4.1 release. WIP
* Update date
* Blog fix
* Update content/blog/2023/10/camel41-whatsnew/index.md
Co-authored-by: Gregor Zurowski <[email protected]>
* Apply suggestions from code review
Co-authored-by: Gregor Zurowski <[email protected]>
* Update blog
* Update blog
* Update blog
* Fix build
---------
Co-authored-by: Gregor Zurowski <[email protected]>
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+---
+title: "Apache Camel 4.1 What's New"
+date: 2023-10-12
+authors: [davsclaus, gzurowski,orpiske]
+categories: ["Releases"]
+preview: Details of what we have done in the Camel 4.1 release.
+---
+
+Apache Camel 4.1 (non LTS) has just been
[released](/blog/2023/10/RELEASE-4.1.0/).
+
+This release introduces a set of new features and noticeable improvements that
we will cover in this blog post.
+
+## Camel Core
+
+We continue with our [performance
optimizations](/blog/2023/05/camel-4-performance-improvements/) in the core.
+
+This release brings an optimized type converter, that works around JDK issue
8180450,
+and can bring improved performance for many scenarios, such as the
content-based router and filter.
+
+## DSL
+
+The XML and YAML DSL now have better support for defining bean which can be
configured with properties, and
+references to other beans. We have added support for easier configuration to
specify constructor arguments,
+factory beans and methods, and inlined script or java code that gives full
power for creating the bean.
+
+We have also enhanced `camel-core` to make it able to dump route DSLs with
bean included. This makes it possible
+for Camel being able to migrate your route sources between XML and YAML DSLs
(see more in next section).
+
+The XML DSL `camel-xml-io` now has line-precise parsing error that shows you
exactly where the problem is.
+
+## Camel JBang (Camel CLI)
+
+We have continued investing in Camel JBang, and this time we introduce the new
DSL `transform` command, that can be
+used for transforming your Camel source routes from one DSL to another
(currently only XML and YAML is supported).
+
+We also added best effort support for loading and running legacy OSGi
blueprint XML files. This is intended for
+Camel end users to have a tool they can use to assist them for migrating away
from Apache Karaf to a modern
+Camel runtime such as Spring Boot, Quarkus or vanilla Camel Main. You can use
this to migrate those OSGi blueprint
+XML files to standard Camel XML or YAML. We plan to publish a blog post about
this in the near future.
+
+Added `ignoreLoadingError` option to `run` and `transform` commands, that
allows to keep running, even if there
+is error loading route sources on startup.
+
+The `export` is made more robust and can export, even if not all source code
is present to fully run the project.
+
+There is a new `sbom` command to generate SBom (CycloneDX or SPDX).
+
+The `--jvm-debug` option in `run` can now be configured with the debugging
port (4004 by default).
+
+Added `camel get startup` command to output timed report of startup procedures
that can help identify which part may be slow on startup.
+
+
+## Camel Kafka
+
+Added type converter for `byte[]` to `String` to make it easy to get Kafka
header content as text value
+(data is stored as byte array by Kafka).
+
+## Camel OpenTelemetry
+
+Added `OpenTelemetryTracingStrategy` that allows fine-grained tracing of every
step a message is routed by Camel.
+
+Decorators now uses [OpenTelemetry Semantic Naming
Style](https://opentelemetry.io/docs/specs/otel/trace/semantic_conventions/)
+for tracing headers.
+
+## Spring Boot
+
+Upgraded to latest 3.1.4 release.
+
+## Miscellaneous
+
+The `camel-report:route-coverage` Maven plugin can now generate reports in
HTML format.
+
+The `file` component now has options to accept hidden files and directories.
+
+The `xslt` component is more dynamic by make it possible to specify the XSLT
template as a header,
+meaning that each `Exchange` can use a dynamic computed stylesheet.
+
+The `camel-aws-sqs` consumer is now batching visibility extension requests
(reducing network bandwidth) for
+inflight messages currently being processed by Camel.
+
+The `camel-aws-s3` producer can now upload big payloads without reading stream
into memory.
+
+The `rest` component can now use a custom `HeaderFilterStrategy`.
+
+The HTTP server based components will now mute exceptions by default (avoid
sending stactraces in HTTP 500 errors back to clients).
+Set `muteException=false` to have old behaviour.
+
+## New Components
+
+- `camel-aws2-redshift-data` - Perform operations on AWS Redshift using
Redshift Data API.
+- `camel-aws2-timestream` - A Camel Amazon Web Services TimeStream component
+- `camel-thymeleaf` - Transform messages using a Thymeleaf template.
+
+## Upgrading
+
+Make sure to read the [upgrade guide](/manual/camel-4x-upgrade-guide-4_1.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 4.1](/releases/release-4.1.0/)
