Apache Camel K - Copenhagen

~1 sec build and deploy on Kubernetes
Claus Ibsen
@davsclaus

@davsclaus
About me
● Senior Principal Software Engineer at Red Hat
● Java Champion
● 11 years as Apache Camel committer
● Author of Camel in Action books
● https://medium.com/@davsclaus

@davsclaus
Thanks for having me
Slides https://www.slideshare.net/davsclaus/apache-camel-k-copenhagen

@davsclaus
Agenda
● What is Apache Camel?
● Apache Camel v3
● Apache Camel K
● Quarkus & Camel
● Q & A

@davsclaus
Apache Camel
is an
Integration Framework
based on
Enterprise Integration Patterns

@davsclaus
Integration Framework

@davsclaus
Enterprise Integration Patterns

@davsclaus
Camel Routes
from("file:data/inbox")
.to("jms:queue:order");
<route>
<from uri="file:data/inbox"/>
<to uri="jms:queue:order"/>
</route>
Java DSL
XML DSL

@davsclaus
Camel Routes with Splitter

@davsclaus
from("file:inbox")

@davsclaus
from("file:inbox")
.split(body().tokenize("n"))

@davsclaus
from("file:inbox")
.marshal(customToXml)
Custom data
transformation

@davsclaus
from("file:inbox")
.marshal(customToXml)
.to("activemq:line"); Custom data
transformation

@davsclaus
Camel runs everywhere
Application
Servers
Linux
Containers

@davsclaus
Runs on popular Java Runtimes

@davsclaus
Camel connects everything
Enterprise
Systems
● File
● FTP
● JMS
● AMQP
● JDBC
● SQL
● TCP/UDP
● Mail
● HDFS
● JPA
● MongoDB
● Kafka
● ...
Public Cloud
● AWS
○ S3
○ SQS
○ Kinesis
○ ...
● Google
○ BigQuery
○ PubSub
● Azure
○ Blob
○ Queue
● Box
● Dropbox
● Facebook
● Linkedin
● Salesforce
● SAP
● ServiceNowIoT
● CoAP
● MQTT
● PubNub
SaaS

@davsclaus
300+ Components
ahc ahc-ws amqp apns as2 asn1 asterisk atmos atmosphere-websocket atom atomix avro aws aws-xray azure bam barcode base64
beanio beanstalk bean-validator bindy blueprint bonita boon box braintree cache caffeine cassandraql castor cdi chronicle chunk cmis
cm-sms coap cometd consul context corda core-osgi core-xml couchbase couchdb crypto crypto-cms csv cxf cxf-transport
digitalocean disruptor dns docker dozer drill dropbox eclipse ehcache ejb elasticsearch elasticsearch5 elasticsearch-rest elsql etcd
eventadmin exec facebook fastjson fhir flatpack flink fop freemarker ftp ganglia geocoder git github google-bigquery google-calendar
google-drive google-mail google-pubsub google-sheets gora grape groovy groovy-dsl grpc gson guava-eventbus guice hawtdb
hazelcast hbase hdfs hdfs2 headersmap hessian hipchat hl7 http http4 http-common hystrix ibatis ical iec60870 ignite infinispan
influxdb ipfs irc ironmq jackson jacksonxml jasypt javaspace jaxb jbpm jcache jclouds jcr jdbc jetty jetty9 jetty-common jgroups jibx
jing jira jms jmx johnzon jolt josql jpa jsch jsonpath json-validator jt400 juel jxpath kafka kestrel krati kubernetes kura ldap ldif leveldb
linkedin lra lucene lumberjack lzf mail master metrics micrometer milo mina mina2 mllp mongodb mongodb3 mongodb-gridfs mqtt
msv mustache mvel mybatis nagios nats netty netty4 netty4-http netty-http nsq ognl olingo2 olingo4 openshift openstack opentracing
optaplanner paho paxlogging pdf pgevent printer protobuf pubnub quartz quartz2 quickfix rabbitmq reactive-streams reactor restlet
rest-swagger ribbon rmi routebox rss ruby rx rxjava2 salesforce sap-netweaver saxon scala schematron scr script service servicenow
servlet servletlistener shiro sip sjms sjms2 slack smpp snakeyaml snmp soap solr spark spark-rest splunk spring spring-batch spring-
boot spring-cloud spring-cloud-consul spring-cloud-netflix spring-cloud-zookeeper spring-integration spring-javaconfig spring-ldap
spring-redis spring-security spring-ws sql ssh stax stomp stream stringtemplate swagger swagger-java syslog tagsoup tarfile telegram
test test-blueprint test-cdi testcontainers testcontainers-spring test-karaf testng test-spring thrift tika twilio twitter undertow univocity-
parsers urlrewrite velocity vertx weather web3j websocket wordpress xchange xmlbeans xmljson xmlrpc xmlsecurity xmpp xstream
yammer yql zendesk zipfile zipkin zookeeper zookeeper-master

@davsclaus
A little Camel Example

@davsclaus 29
kamel run file-copier.js
K
A little Camel K example

@davsclaus
Camel Community in Numbers
● Created in 2007
● 139 Releases
● 473 Contributors on github
● ~ 2500 stars ⭐️ on github (a star is appreciated)
● ~ 36000 commits on master branch (~ 3000/year - 8/day)
● ~ 8600 Q&A on stackoverflow
● ~ 500 users on gitter chat
● 552 follows on twitter (https://twitter.com/apachecamel)

@davsclaus
The good, bad & ugly
● Huge and active community
● Continued and stable release cadence
● Open and welcoming community (we love contributions)
● Burden on core developers
● Well established and "old project" may not appear to hipsters
● Balance of "keep as-is" vs "modernize" architecture
● The outdated website
(new site under development: https://camel.apache.org/staging)

@davsclaus
Camel 3 Timeline
● 3.0 Milestone 1 - February 2019
● 3.0 Milestone 2 - March 2019
● 3.0 Milestone 3 - May 2019
● 3.0 Milestone 4 - July 2019
● 3.0 GA - September 2019
● v3.0 Basic Features
● v3.1 Postponed Features
● v3.2 Postponed Features
● ...
Timeboxed
Schedule

@davsclaus
Camel 3 Major Goals
● Backwards compatible (minimal migration for normal use-cases)
● Light-weight & modular camel-core
● Reactive routing engine (non blocking & back-pressure)
● Tidy up APIs & cleanup of technical debt
● Fluent Builder Endpoint configuration (Java & XML)
● Java 8 DSL improvements
● New Cloud EIP Patterns

@davsclaus
Camel 3 Major Goals
● Apache Camel K
● GraalVM/Quarkus Support
● Timeboxed Release
● New website & documentation
● More presence on social/workshop/blog posts
● There is still a lot of unexpressed potential

@davsclaus
Camel 3 Milestone 1
● Released on February 22th 2019
● Migration Guide (work in progress)
https://github.com/apache/camel/blob/master/MIGRATION.md
● Example of migrating Camel in Action 2nd source code
https://github.com/camelinaction/camelinaction2/compare/camel3m1

@davsclaus
Camel 3 Milestone 1
● Modularization of camel-core
○ camel-api API for end users
○ camel-base Internal
○ camel-core Just like Camel 2.x
○ camel-management-api API for JMX management
○ camel-management-impl JMX is optional
○ camel-support API and support classes for end
users / components
○ camel-util General small utilities
○ camel-util-json Internal (Camel tooling and such)
○ camel-core-xml XML DSL support
○ camel-core-osgi OSGi support (no longer in camel-
core)
Mock
Component still
in camel-core
We will attempt to
move it out in M3

@davsclaus
Camel 3 Milestone 1
● Modularization of camel-core

@davsclaus
Camel 3 Milestone 1
● Reactive Core (internal)

@davsclaus
Camel 3 Milestone 1
● Reactive Core
○ All EIPs now fully reactive
○ Blocking vs Non-Blocking code-paths merged into one (Non-Blocking)
● Reactive Core (todo)
○ Backpressure (M3)
○ Client API (M3)
○ Java 9+ Flowable API (M3)
■ M1/M2 currently Java 8
○ Component metadata
■ To know if a component is fully reactive
● Vert.X (todo 3.1/3.2)
○ Better camel-vertx integration
■ To use its fully reactive components
Not all Camel
components are
100% reactive
compliant

@davsclaus
Camel 3 Milestone 1
● Tidy up API and clean technical debt
○ All deprecated code and components removed
○ Some APIs tidied up
...More internal cleanup on the way (M2/M3)
● camel-core-osgi
○ Upgraded to OSGi R6
● camel-activemq
○ Apache ActiveMQ 5.x (do not use activemq-camel)

@davsclaus
Camel 3 Milestone 1
● Improve project build
○ Faster build and re-build of project
○ More source generation of metadata and other files
○ … more to come in M2
● Apache Camel K
○ Camel K 0.3.0 supports
■ Camel 2.x
■ Camel 3 milestone 1

@davsclaus
Camel 3 Milestone 2
● Released on March 31th 2019
● Migration Guide (work in progress)
https://github.com/apache/camel/blob/master/MIGRATION.md
● Example of migrating Camel in Action 2nd source code
https://github.com/camelinaction/camelinaction2/compare/camel3m2

@davsclaus
Camel 3 Milestone 2
● Tidy up API and clean technical debt
○ All deprecated code and components removed
○ Some APIs tidied up
...More internal cleanup on the way (M3)
● Optimized type converters
○ Invoke type converter directly (no reflection method call)
○ Optimized type converter discovery and loading on startup
○ Allows pre-load with GraalVM/Quarkus

@davsclaus
Camel 3 Milestone 2
● Properties component
○ Fallback to lookup property as OS ENV variable
○ To work better with Kubernetes / Camel K
● Camel Main
○ More functionality out of the box
■ dependency injection (IoC) with camel-core Java (RouteBuilder classes)
■ dependency injection (IoC) with camel-spring Java
○ Convention over configuration out of the box
■ application.properties
○ To work better with Camel K

@davsclaus
Camel 3 Milestone 2
● Writeable registry
○ bind beans to registry
camelContext().getRegistry().bind("myName", myBean);
bindToRegistry("myName", myBean); (in RouteBuilder)
@BindToRegistry
○ Easier unit testing
○ Easier Camel standalone
● Step EIP
○ Group together EIPs (logic name)
○ Grouped performance statistics

@davsclaus
Camel 3 Milestone 2
● Quarkus/GraalVM Support
○ Works better with quarkus-camel
○ More minimal/optimized camel-core
○ Works better with Camel K

@davsclaus
Camel 3 Milestone 3
● camel-core-engine
○ Minimal set of dependency
● camel-mock
○ Move Mock out of camel-core (potentially not possible)
● camel-dataset
○ Move dataset & test component out of camel-core DONE
● camel-bean
○ Move Bean component / Language out of camel-core (likely not possible)
● camel-xml
○ Move all related to XML out of camel-core

@davsclaus
Camel 3 Milestone 3
● Quarkus/GraalVM Support
○ Generate additional metadata in JARs
○ Better integration with Quarkus
○ More minimal/optimized camel-core
○ Works better with Camel K

@davsclaus
Camel 3 Milestone 3
● Auto generated Endpoint DSL
○ Fluent Builders for endpoint in Java / XML
from(file("inbox").recursive().withDelay(2000))
.to(jms("cheese").withTimeToLive(5000));
<route>
<from>
<file directory="inbox" recursive="true" delay=”2000”/>
</from>
<to>
<jms queue="cheese" timeToLive="5000"/>
</to>
</route>

@davsclaus
Camel 3 Milestone 4
● Reactive Core
○ Backpressure
○ Client API
○ Flowable API (Java9+)
● Data Shape
○ IN vs OUT contract
■ Route
■ Component
○ Improved Data Mapping support
■ camel-atmasmap

@davsclaus
Camel 3 Milestone 4
● Java 11
○ Builds on Java 11
○ Java 8 to be dropped
● Stabilization and polish
○ Tidy up for GA release
● New website
○ Staging for preview

@davsclaus
Camel 3 - GA September 2019
Camel 3 is our
“Duke Nukem
Forever”
project 😁

@davsclaus
Apache Camel K
K
~1 sec build and deploy on Kubernetes

@davsclaus
Why Camel K
● Building and deploying Camel on Kubernetes
○ fabric8-maven-plugin to build the image
○ s2i on OpenShift to build the image
○ ci/cd pipeline (such as Jenkins) to build the image
● Minute(s) to build and deploy "Hello Camel"
We want to go faster

@davsclaus
Why Camel K
● Low-code / No-code integration
○ Engine in Red Hat Fuse Online
● Cloud Native Camel on Kubernetes
● Camel Serverless
Cloud Native Camel
on Kubernetes

@davsclaus
Why Camel K
● Quick Prototyping
● Simple or little business logic
● Tiny microservices
● Opinionated runtime
Not intended for traditional
bigger projects
-
Instead use regular Camel

@davsclaus
Limitations of Camel K
● Opinionated runtime
● Not a replacement for Apache Camel
● Must run on Kubernetes
● Testing framework currently limited
● Early project
... but Camel K has a lot of
potential

@davsclaus
Overview of Camel K
A lightweight platform for running Camel integration DSL in the cloud.
● Based on operator-sdk
● Works on Openshift and “vanilla” Kubernetes
$ kamel run routes.groovy --dev
from(“telegram:bots/bot-id”)
.transform()...
.to(“kafka:topic”);
from(“kafka:topic”)
.to(“http:my-host/api/path”);
File routes.groovy

@davsclaus
Architecture of Camel K

@davsclaus
Knative
Kubernetes-based platform to build, deploy, and manage
modern serverless workloads
● Serving
● Build
● Events
Serving and Events
are most relevant
to Camel K

@davsclaus
Knative Serving and Eventing
Knative
~=
Cloud ESB

@davsclaus
Camel K and Knative
Now part of Knative
Camel K is Serverless:
● Autoscaling and scaling to zero (Knative Serving)
● Event-based communication (Knative eventing)
● CamelSources in Knative: https://github.com/knative/eventing-
sources/tree/master/contrib/camel/samples
+

@davsclaus
Camel K
Demo
Let’s build a Telegram Chat Bot in few minutes.
You’ll need shortly on
your phone:
- Telegram App
- A QR Code reader

@davsclaus
Camel K
Demo
Let’s build a Telegram Chat Bot in few minutes.
@camelkbot

@davsclaus
Camel K - Links
● Apache Camel K
https://github.com/apache/camel-k
● Camel K Telegram Demo Code
https://github.com/nicolaferraro/camel-k-chuck-bot
● Camel K Introduction Blog
https://www.nicolaferraro.me/2018/10/15/introducing-camel-k
● Camel K and Knative tutorial
https://redhat-developer-demos.github.io/knative-tutorial/knative-tutorial-
camelk/v1.0.0/index.html

@davsclaus
Supersonic Subatomic Java
https://quarkus.io

@davsclaus
What is Quarkus
A Kubernetes Native Java stack tailored for
GraalVM & OpenJDK HotSpot, crafted from the
best of breed Java libraries and standards

@davsclaus
Minimal Footprint - Quarkus
● Minimal footprint Java applications
○ Native vs Quarkus+OpenJDK JVM vs Traditional JVM

@davsclaus
Container First - Quakrus
● First Class Support for Graal/SubstrateVM
○ Native compiled first-class supported
● Build Time Metadata Processing
○ Pre-Build and "warump" as much as possible during build time
● Reduction in Reflection Usage
○ Reduce startup and memory
● Native Image Pre Boot
○ Most of startup serialized into native image to startup even faster
https://quarkus.io/vision/container-first

@davsclaus
Programming Model - Quakrus
● Unifies imperative and reactive

@davsclaus
Developer Joy - Quarkus
● Unified configuration
● Zero config, live reload
● Streamlined code (80/20 rule)
● Native executable generation

@davsclaus
Standards - Quarkus
● CDI Dependency Injection
● JAX-RS REST
● JPA persistence
● JTA transactions
● Eclipse Microprofile configuration & monitoring
● Vert.X
● Apache Camel
● ... and more
https://quarkus.io/vision/standards

@davsclaus
Quarkus and Camel / Camel K
● Works with Camel K and regular Camel (3.x)
● Fast startup, low memory usage
● Compile Camel routes to native code (Camel K)
● Compile Camel projects to native code (Camel)
● Bring Camel to the serverless world

@davsclaus
Quarkus and Camel / Camel K
● Work to do
○ Quarkus Dev mode
○ More native Camel components
○ More camel-core optimizations
○ Better Camel and Quakrus integration
○ Better Camel and CDI with Quarkus
○ Native Compilation with GraalVM is not rock solid

@davsclaus
Camel and Quarkus - Links
● Quarkus
https://quarkus.io
● Quarkus Camel Extensions
https://quarkus.io/extensions/#integration
https://github.com/quarkusio/quarkus/tree/master/extensions/camel
● Quarkus Camel Demo
https://github.com/quarkusio/quarkus-quickstarts/tree/development/camel-
java
Will be merged over to master in next release

Apache Camel K - Copenhagen

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