println(instance.name) // Prints: myName
----

[[managed_types]]
== Using Gradle Managed Types

A managed type as an abstract class or interface with no fields and whose properties are all managed.
These types have their state entirely managed by Gradle.

For example, this managed type is defined as an interface:

[source,java]
.Resource.java
----

    }

    private <T> T processManaged(Managed managed, ValueVisitor<T> visitor) {
        if (managed.isImmutable()) {
            return visitor.managedImmutableValue(managed);
        } else {
            // May (or may not) be mutable - unpack the state
            T state = processValue(managed.unpackState(), visitor);
            return visitor.managedValue(managed, state);
        }
    }

    }
}

tasks.register<MyPropertyTask>("myPropertyTask") {
    messageProperty.set("Hello, Gradle!")
}
// end::prop-managed[]

// Provider
// tag::prov-managed[]
abstract class MyProviderTask : DefaultTask() {
    final val messageProvider: Provider<String> = project.providers.provider { "Hello, Gradle!" } // message provider

    @TaskAction
    fun printMessage() {
        println(messageProvider.get())
    }
}

    }
}

tasks.register('myPropertyTask', MyPropertyTask) {
    messageProperty.set("Hello, Gradle!")
}
// end::prop-managed[]

// Provider
// tag::prov-managed[]
abstract class MyProviderTask extends DefaultTask {
    final Provider<String> messageProvider = project.providers.provider { "Hello, Gradle!" }

    @TaskAction
    void printMessage() {
        println(messageProvider.get())
    }
}

        }

        @Override
        public ValueSnapshot managedImmutableValue(Managed managed) {
            return new ImmutableManagedValueSnapshot(managed.publicType().getName(), (String) managed.unpackState());
        }

        @Override
        public ValueSnapshot managedValue(Managed value, ValueSnapshot state) {
            return new ManagedValueSnapshot(value.publicType().getName(), state);

The build tree state is managed by the `BuildTreeState` class.
An instance is created at the start of a build execution and discarded at the end of the execution.

### Build state

The "build state" holds the state for a build within the build definition for a single build execution, and is contained by the build tree state.

The build state is managed by the `BuildState` class.

        }

        @Override
        public Isolatable<?> managedImmutableValue(Managed managed) {
            return new IsolatedImmutableManagedValue(managed, managedFactoryRegistry);
        }

        @Override
        public Isolatable<?> managedValue(Managed value, Isolatable<?> state) {

apiVersion: v1
kind: Service
metadata:
  name: managed-owner-istio
spec:
  ports:
  - appProtocol: http
    name: default
    port: 80
  selector:
    gateway.networking.k8s.io/gateway-name: managed-owner
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: managed-owner-istio
spec:
  selector:
    matchLabels:
      gateway.networking.k8s.io/gateway-name: managed-owner
  replicas: 1
  template:

import org.gradle.internal.serialize.graph.readCollection
import org.gradle.internal.serialize.graph.readNonNull
import org.gradle.internal.serialize.graph.writeCollection
import org.gradle.internal.state.Managed
import org.gradle.internal.state.ManagedFactoryRegistry


class AttributeContainerCodec(
    private val attributesFactory: ImmutableAttributesFactory,
    private val managedFactories: ManagedFactoryRegistry

	// If no node with the name nodeName exists in list of nodes managed by the
	// attach/detach attached controller, an error is returned.
	AddPod(podName types.UniquePodName, pod *v1.Pod, volumeSpec *volume.Spec, nodeName k8stypes.NodeName) (v1.UniqueVolumeName, error)

	// DeleteNode removes the given node from the list of nodes managed by the
	// attach/detach controller.
	// If the node does not exist this is a no-op.