without-cloudfunction-plugin.groovy

configurations {
  invoker
}

dependencies {
  ...
  invoker("com.google.cloud.functions.invoker:java-function-invoker:1.1.0")
  ...
}

tasks.register("runFunction", JavaExec) {
  main = 'com.google.cloud.functions.invoker.runner.Invoker'
  classpath(configurations.invoker)
  inputs.files(configurations.runtimeClasspath, sourceSets.main.output)
  args(
          '--target', project.findProperty('run.functionTarget') ?: 'functions.HelloHttp',
          '--port', project.findProperty('run.port') ?: 8080
  )
  doFirst {
    args('--classpath', files(configurations.runtimeClasspath, sourceSets.main.output).asPath)
  }
}