NestedDeserialization

java.lang.Object
- org.apache.pekko.serialization.NestedDeserialization

```
public class NestedDeserialization
extends java.lang.Object
```
INTERNAL API
Bounds how deeply one deserialization may nest.
Several wire formats carry a nested payload: the enclosed message is an opaque byte array that is deserialized in turn, and that payload may itself enclose another. Each level is parsed on its own, so a protobuf parser's nesting limit does not bound the chain - only the size of the message does. Recursion therefore tracks the nesting rather than the size of the message, and a sufficiently deep chain fails with a StackOverflowError instead of a serialization error.
The depth is per thread because one message is deserialized synchronously on one thread.

Constructor Summary

Constructors
Constructor Description

NestedDeserialization()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T> T`	`atNextLevel(int max, scala.Function0<T> body)`	Runs `body` one level deeper, failing with `NotSerializableException` - the ordinary way a message that cannot be deserialized is reported - when the nesting exceeds `max`.
`static int`	`currentDepth()`	Current nesting depth, for testing.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NestedDeserialization
```
public NestedDeserialization()
```
- Method Detail
  - atNextLevel
```
public static <T> T atNextLevel(int max,
                                scala.Function0<T> body)
```
    Runs body one level deeper, failing with NotSerializableException - the ordinary way a message that cannot be deserialized is reported - when the nesting exceeds max.
  - currentDepth
```
public static int currentDepth()
```
    Current nesting depth, for testing.