corda/tools/explorer/capsule/build.gradle

/**
 * This build.gradle exists to package Node Explorer as an executable fat jar.
 */
apply plugin: 'us.kirchmeier.capsule'

description 'Node Explorer'

repositories {
    mavenLocal()
    mavenCentral()
    maven {
        url 'http://oss.sonatype.org/content/repositories/snapshots'
    }
    jcenter()
    maven {
        url 'https://dl.bintray.com/kotlin/exposed'
    }
}

// Force the Caplet to target Java 6. This ensures that running 'java -jar explorer.jar' on any Java 6 VM upwards
// will get as far as the Capsule version checks, meaning that if your JVM is too old, you will at least get
// a sensible error message telling you what to do rather than a bytecode version exception that doesn't.
// If we introduce .java files into this module that need Java 8+ then we will have to push the caplet into
// its own module so its target can be controlled individually, but for now this suffices.
sourceCompatibility = 1.6
targetCompatibility = 1.6

dependencies {
    compile project(':tools:explorer')
}

task buildExplorerJAR(type: FatCapsule) {
    applicationClass 'net.corda.explorer.Main'
    archiveName "node-explorer-${corda_version}.jar"
    applicationSource = files(project.tasks.findByName('jar'), '../build/classes/main/ExplorerCaplet.class')
    classifier 'fat'

    capsuleManifest {
        applicationVersion = corda_version
        systemProperties['visualvm.display.name'] = 'Node Explorer'
        minJavaVersion = '1.8.0'
        // This version is known to work and avoids earlier 8u versions that have bugs.
        minUpdateVersion['1.8'] = '102'
        caplets = ['ExplorerCaplet']

        // JVM configuration:
        // - Constrain to small heap sizes to ease development on low end devices.
        // - Switch to the G1 GC which is going to be the default in Java 9 and gives low pause times/string dedup.
        //
        // If you change these flags, please also update Driver.kt
        jvmArgs = ['-Xmx200m', '-XX:+UseG1GC']
    }

    manifest {
        attributes('Corda-Version': corda_version)
    }
}

build.dependsOn buildExplorerJAR