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Migration guide: version 6.0 to 7.0

Version 7.0.0 of the Genesis platform requires Java version 17 and gradle version 8.3.

info

If you have an existing application running on version 6 of the Genesis platform and you are using gradle, these instructions will enable you to migrate to version 7 of the platform without difficulties. For applications running on older versions of the platform, please contact your Genesis representative.

Upgrade references to the artifacts​

To migrate an existing application to version 7.0.0:

In your gradle.properties file, bump up genesisVersion and all modules in the application to 7.0.0.

genesisVersion=7.0.0
authVersion=7.0.0
deployPluginVersion=7.0.0

Modify the build​

  1. Update your server/jvm/build.gradle.kts file so that it references Java 17 (including compiler options) and Kotlin 1.9.

Still in the server/jvm/build.gradle.kts file, add the required directives to support Junit 5 and properties to run tests.

server/jvm/build.gradle.kts
...
subprojects  {
    ...
    tasks {
        ...
        test {
            systemProperty("DbLayer", "SQL")
            systemProperty("DbHost", "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1")
            systemProperty("DbQuotedIdentifiers", "true")
            useJUnitPlatform()

            // Add exports and opens so ChronicleQueue can continue working in JDK 17.
            // More info in: https://chronicle.software/chronicle-support-java-17/
            jvmArgs = jvmArgs!! + listOf(
                "--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED",
                "--add-exports=java.base/sun.nio.ch=ALL-UNNAMED",
                "--add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED",
                "--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED",
                "--add-opens=jdk.compiler/com.sun.tools.javac=ALL-UNNAMED",
                "--add-opens=java.base/java.lang=ALL-UNNAMED",
                "--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
                "--add-opens=java.base/java.io=ALL-UNNAMED",
                "--add-opens=java.base/java.util=ALL-UNNAMED",
                "--add-opens=java.base/java.nio=ALL-UNNAMED" // this one is opened for LMDB
            )
        }
        ...
    }
}
...

Lastly, configure the copyDependencies task and replace JavaLanguageVersion.

server/jvm/build.gradle.kts
...
subprojects  {
    ...
    tasks {
        ...
        //testing should use H2 mem db
        test {
            systemProperty("DbLayer", "SQL")
            systemProperty("DbHost", "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1")
            systemProperty("DbQuotedIdentifiers", "true")
        } 

        afterEvaluate {
	        val copyDependencies = tasks.findByName("copyDependencies") ?: return@afterEvaluate

            tasks.withType<Jar> {
                dependsOn(copyDependencies)
            }
        }           
    }
}
tasks {
    ...
}
allprojects {
    ...
    kotlin {
        jvmToolchain {
            (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(17))
        }
    }
    ...
    java {
        toolchain {
            languageVersion.set(JavaLanguageVersion.of(17))
        }
    }
    ...
}

  1. In the ** server/jvm/-application_-site-specific/build.gradle.kts ** file, configure the copyDependencies task:
...
// To give custom name to the distribution package
tasks {
    copyDependencies {
        enabled = false
    }    
    distZip {
        archiveBaseName.set("alpha-site-specific")
        archiveClassifier.set("bin")
        archiveExtension.set("zip")
    }
}
...

  1. In the file server/jvm/-application_- distribution/build.gradle.kts file, configure the distTar task:
...
tasks {
    distTar {
        mustRunAfter(":alpha-deploy:copyDependencies")
    }    
    distZip {
        ...
    }
    ...
}
...

Finishing​

Double check

Before running the final commands, make sure your Java and Gradle are running using the required versions (Java 17 and Gradle 8.3).

java -version
gradle -version

Also, make sure your environment variables are set properly, specially JAVA_HOME and PATH.

After modifying the gradle files, open a terminal in the folder where you have your project; then upgrade the gradle wrapper:

gradle wrapper --gradle-version=8.3

Then you need to repeat the command in the server/jvm folder:

cd server/jvm
gradle wrapper --gradle-version=8.3

After you have done this:

  • If everything has worked, a distribution will be generated - congratulations! You have migrated your application to Genesis 7.
  • If there are errors, you need to search through the release notes for all your modules to check for breaking changes.