Quarkus Main Information.

Contents at a Glance.

• About.
• Documentation.
• Benefits.
• Maven Commands.
• Native Image.
• Build a native executable.
• Articles.
• Conferences.
• Conference Speakers.
• Help.

About.

Documentation.

• Quarkus.
• QUTE REFERENCE GUIDE
• Hot Reload.
• Reactive Programming Style.
• DEPLOYING ON KUBERNETES AND OPENSHIFT
• EXTENSIONS.
• Platform Dependent Application.

Benefits.

• Developer Joy.
• Supersonic Subatomic Java.
• Unifies imperative and reactive.
• Best of breed libraries and standards.

Maven Commands.

• mvn io.quarkus:quarkus-maven-plugin:create
• mvn quarkus:dev Running the application in dev mode.
• mvn compile quarkus:dev Compile the application in dev mode.
• mvn quarkus:list-extensions Show list of extensions.
• mvn quarkus:add-extension -Dextensions="groupId:artifactId" Adding extension.
• mvn quarkus:add-extension -Dextensions="hibernate-*" You can install all extensions which match a globbing pattern.
• mvn package For packaging application. Be aware that it’s not an über-jar as the dependencies are copied into the target/lib directory.
• mvn package -Pnative Compilation into native code.
• mvn verify -Pnative
• mvn verify -Pnative -Dquarkus.test.native-image-profile=test
• mvn failsafe:integration-test
• mvn package -Pnative -Dquarkus.native.container-build=true You can use Docker to build the native executable.
• mvn quarkus-bootstrap:build-tree Displays the build dependency tree for the application.
• mvn package -Pnative -Dquarkus.native.container-build=true Support only JDK8
• mvnw package -Pnative -Dquarkus.native.container-runtime=docker
• mvnw package -Pnative -Dquarkus.native.container-runtime=podman

Native Image.

• Need registration: reflection, dynamic proxy.
• Not supported: Dynamic Class Loading, Method Handlers, Invoke Dynamic.
• Different: Static Initialization on build-time.

Building a native executable.

• The native executable for our application will contain the application code, required libraries, Java APIs, and a reduced version of a VM. The smaller VM base improves the startup time of the application and produces a minimal disk footprint.
• Building a native executable.
• TIPS FOR WRITING NATIVE APPLICATIONS

Preparation environment to build native executable.

• sudo update-alternatives --install /usr/bin/java java /path/.../bin/java 13

• sudo update-alternatives --install /usr/bin/javac javac /path/.../bin/javac 13

• sudo update-alternatives --install /usr/bin/javadoc javadoc /path/.../bin/javadoc 13.
  
  

• sudo update-alternatives --config java

• sudo update-alternatives --config javac

• java -version

• javac -version.
  
  

• export JAVA_HOME=/pathToMainFolder

• echo $JAVA_HOME

• export PATH=$JAVA_HOME/bin:$PATH.
  
  

• export GRAALVM_HOME=/pathToMainFolder

• echo $GRAALVM_HOME

• export PATH=$GRAALVM_HOME/bin:$PATH.
  
  

• source /home/trl/.profile.
  
  

• $GRAALVM_HOME/bin/gu install --file native-image-installable-svm-svmee-java11-linux-amd64-20.0.0.jar
  
  

• Or add a line "GRAALVM_HOME=$JAVA_HOME" in a file with a name ".profile". This file is in the home directory. And when you change "JAVA_HOME", the "GRAALVM_HOME" will change.

Articles.

• Quarkus — новый взгляд на Cloud Native Java. Russian Version.

Conferences.

• Secure your Quarkus Applications by Sebastien Blanc.
• Kubernetes Native Spring apps on Quarkus by Georgios Andrianakis.

Conference Speakers.

Help.