// Generate and print the upgrade plan
	plan := genUpgradePlan(availUpgrades, configVersionStates)
	return printer.PrintObj(plan, os.Stdout)
}

// genUpgradePlan generates upgrade plan from available upgrades and component config version states
func genUpgradePlan(availUpgrades []upgrade.Upgrade, configVersions []outputapiv1alpha3.ComponentConfigVersionState) *outputapiv1alpha3.UpgradePlan {

    assertEvents(
      "take plan 1",
      "plan 1 TCP connecting...",
    )

    taskFaker.advanceUntil(260.ms)
    assertEvents(
      "plan 1 TCP connected",
      "plan 0 cancel",
      "plan 1 TLS connecting...",
      "plan 1 TLS connect failed",
      "plan 2 TCP connecting...",
      "plan 2 TCP connected",
      "plan 2 TLS connecting...",
      "plan 2 TLS connected",
    )

    if (plan is FailedPlan) return plan.result

    // Connect TCP asynchronously.
    tcpConnectsInFlight += plan
    val taskName = "$okHttpName connect ${routePlanner.address.url.redact()}"
    taskRunner.newQueue().schedule(
      object : Task(taskName) {
        override fun runOnce(): Long {
          val connectResult =
            try {
              plan.connectTcp()

 */
interface RoutePlanner {
  val address: Address

  /** Follow-ups for failed plans and plans that lost a race. */
  val deferredPlans: ArrayDeque<Plan>

  fun isCanceled(): Boolean

  /** Returns a plan to attempt. */
  @Throws(IOException::class)
  fun plan(): Plan

  /**
   * Returns true if there's more route plans to try.
   *

        def controller = controller()

        controller.prepareToScheduleTasks()
        def plan = controller.newWorkGraph()
        controller.populateWorkGraph(plan) { b -> b.addRequestedTasks() }
        controller.finalizeWorkGraph(plan)
        def executionResult = controller.executeTasks(plan)
        executionResult.failures.empty

        def finishResult = controller.finishBuild(null)

import org.gradle.api.NonNullApi;
import org.gradle.api.Task;
import org.gradle.api.internal.GradleInternal;
import org.gradle.execution.plan.ExecutionPlan;
import org.gradle.execution.plan.FinalizedExecutionPlan;
import org.gradle.execution.plan.QueryableExecutionPlan;
import org.gradle.execution.plan.ToPlannedNodeConverterRegistry;
import org.gradle.internal.operations.BuildOperationContext;

    /**
     * Adds an entry task to the execution plan. If called multiple times then execution plan follows the method invocation order.
     *
     */
    void addEntryTask(Task task);

    /**
     * Adds entry tasks to the execution plan. No ordering can be assumed between the elements of the target collection. If called multiple times then execution plan follows the method invocation order.
     */

    while (true) {
      if (routePlanner.isCanceled()) throw IOException("Canceled")

      try {
        val plan = routePlanner.plan()

        if (!plan.isReady) {
          val tcpConnectResult = plan.connectTcp()
          val connectResult =
            when {
              tcpConnectResult.isSuccess -> plan.connectTlsEtc()
              else -> tcpConnectResult
            }

        return buildOperationRunner.call(new ExecuteTasks(gradle, plan));
    }

    private class ExecuteTasks implements CallableBuildOperation<ExecutionResult<Void>> {
        private final GradleInternal gradle;
        private final FinalizedExecutionPlan plan;

        public ExecuteTasks(GradleInternal gradle, FinalizedExecutionPlan plan) {
            this.gradle = gradle;

import org.gradle.execution.plan.BuildWorkPlan
import org.gradle.execution.plan.DefaultExecutionPlan
import org.gradle.execution.plan.DefaultPlanExecutor
import org.gradle.execution.plan.ExecutionNodeAccessHierarchies
import org.gradle.execution.plan.ExecutionPlan
import org.gradle.execution.plan.FinalizedExecutionPlan
import org.gradle.execution.plan.Node
import org.gradle.execution.plan.NodeValidator