This is a small project whose sole purpose is to build a native image from a simple application class depending on the neo4j-java-driver with the help of GraalVM and execute that binary against a Neo4j instance.
It ensures basic connectivity and functionality in two steps: Once with optional dependencies present, once with them being absent.
There's a small JBang Java script to orchestrate the tests.
docker run --publish=7474:7474 --publish=7687:7687 -e 'NEO4J_AUTH=neo4j/secret' -e NEO4J_ACCEPT_LICENSE_AGREEMENT=yes neo4j:4.0
Download the JDK 11 version for your operating system from https://github.com/oracle/graal/releases
All community downloads are available on https://github.com/graalvm/graalvm-ce-builds/releases
Here we used version 21.3.0
Exports should be as follows:
export GRAALVM_HOME=/Library/Java/JavaVirtualMachines/graalvm-ce-java17-21.3.0/Contents/Home
export PATH=$PATH:$GRAALVM_HOME/bin
export JAVA_HOME=$GRAALVM_HOME
Then install the native image tool
gu install native-image
gu list
./mvnw clean package
It will automatically runs a test script against a Docker based instance. You can manually run the program against the above database with:
./target/printmovies
No movies will be printed as long as you didn't install the movie graph, but a query will have been made.
The script has as couple of options:
Usage: printmovies [-p[=<password>]]... [-a=<address>] [-l=<loggingLevel>]
[-m=<metricsAdapter>] [-u=<user>]
-a, --address=<address> The address this migration should connect to. The
driver supports bolt, bolt+routing or neo4j as
schemes.
-l=<loggingLevel> Logging level
-m=<metricsAdapter>
-p, --password[=<password>]
The password of the user connecting to the database.
-u, --username=<user> The login of the user connecting to the database.
