NodeExtension (Hazelcast Root 3.4 API)

All Known Implementing Classes:

DefaultNodeExtension
```
public interface NodeExtension
```
NodeExtension is a Node extension mechanism to be able to plug different implementations of some modules, like; SerializationService, SocketChannelWrapperFactory etc.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`afterStart(Node node)` Called after node is started
`void`	`beforeStart(Node node)` Called before node is started
`PacketReader`	`createPacketReader(TcpIpConnection connection, IOService ioService)` Creates a `PacketReader` for given `Connection` instance.
`PacketWriter`	`createPacketWriter(TcpIpConnection connection, IOService ioService)` Creates a `PacketWriter` for given `Connection` instance.
`SerializationService`	`createSerializationService()` Creates a `SerializationService` instance to be used by this `Node`.
`<T> T`	`createService(Class<T> type)` Creates a service which is an implementation of given type parameter.
`void`	`destroy()` Destroys `NodeExtension`.
`MemberSocketInterceptor`	`getMemberSocketInterceptor()` Returns `MemberSocketInterceptor` for this `Node` if available, otherwise returns null.
`MemoryStats`	`getMemoryStats()` Returns MemoryStats of for the JVM and current HazelcastInstance.
`Storage<DataRef>`	`getNativeDataStorage()` Deprecated.
`SecurityContext`	`getSecurityContext()` Returns `SecurityContext` for this `Node` if available, otherwise returns null.
`SocketChannelWrapperFactory`	`getSocketChannelWrapperFactory()` Returns `SocketChannelWrapperFactory` instance to be used by this `Node`.
`void`	`onThreadStart(Thread thread)` Called on thread start to inject/intercept extension specific logic, like; registering thread in some service, executing a special method before thread starts to do its own task.
`void`	`onThreadStop(Thread thread)` Called before a thread stops to clean/release injected by `onThreadStart(Thread)`.
`void`	`printNodeInfo(Node node)` Called to print node information during startup

- Method Detail
  - beforeStart
```
void beforeStart(Node node)
```
    Called before node is started
  - printNodeInfo
```
void printNodeInfo(Node node)
```
    Called to print node information during startup
  - afterStart
```
void afterStart(Node node)
```
    Called after node is started
  - createSerializationService
```
SerializationService createSerializationService()
```
    Creates a SerializationService instance to be used by this Node.
    
    Returns:
    a SerializationService instance
  - getSecurityContext
```
SecurityContext getSecurityContext()
```
    Returns SecurityContext for this Node if available, otherwise returns null.
    
    Returns:
    security context
  - getNativeDataStorage
```
@Deprecated
Storage<DataRef> getNativeDataStorage()
```
    Deprecated.
  - createService
```
<T> T createService(Class<T> type)
```
    Creates a service which is an implementation of given type parameter.
    
    Parameters:
    type - type of service
    
    Returns:
    service implementation
    
    Throws:
    
    IllegalArgumentException - if type is not known
  - getMemberSocketInterceptor
```
MemberSocketInterceptor getMemberSocketInterceptor()
```
    Returns MemberSocketInterceptor for this Node if available, otherwise returns null.
    
    Returns:
    MemberSocketInterceptor
  - getSocketChannelWrapperFactory
```
SocketChannelWrapperFactory getSocketChannelWrapperFactory()
```
    Returns SocketChannelWrapperFactory instance to be used by this Node.
    
    Returns:
    SocketChannelWrapperFactory
  - createPacketReader
```
PacketReader createPacketReader(TcpIpConnection connection,
                              IOService ioService)
```
    Creates a PacketReader for given Connection instance.
    
    Parameters:
    connection - tcp-ip connection
    ioService - IOService
    
    Returns:
    packet reader
  - createPacketWriter
```
PacketWriter createPacketWriter(TcpIpConnection connection,
                              IOService ioService)
```
    Creates a PacketWriter for given Connection instance.
    
    Parameters:
    connection - tcp-ip connection
    ioService - IOService
    
    Returns:
    packet writer
  - onThreadStart
```
void onThreadStart(Thread thread)
```
    Called on thread start to inject/intercept extension specific logic, like; registering thread in some service, executing a special method before thread starts to do its own task.
    
    Parameters:
    thread - thread starting
  - onThreadStop
```
void onThreadStop(Thread thread)
```
    Called before a thread stops to clean/release injected by onThreadStart(Thread).
    
    Parameters:
    thread - thread stopping
  - getMemoryStats
```
MemoryStats getMemoryStats()
```
    Returns MemoryStats of for the JVM and current HazelcastInstance.
    
    Returns:
    memory statistics
  - destroy
```
void destroy()
```
    Destroys NodeExtension. Called on Node.shutdown()

Interface NodeExtension

Method Summary

Method Detail

beforeStart

printNodeInfo

afterStart

createSerializationService

getSecurityContext

getNativeDataStorage

createService

getMemberSocketInterceptor

getSocketChannelWrapperFactory

createPacketReader

createPacketWriter

onThreadStart

onThreadStop

getMemoryStats

destroy