java.lang.Object
- org.apache.cassandra.service.CassandraDaemon

```
public class CassandraDaemon
extends java.lang.Object
```
The CassandraDaemon is an abstraction for a Cassandra daemon service, which defines not only a way to activate and deactivate it, but also hooks into its lifecycle methods (see setup(), start(), stop() and setup()).

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface CassandraDaemon.Server

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String MBEAN_NAME

static java.lang.Runnable SPECULATION_THRESHOLD_UPDATER

protected StartupChecks startupChecks

Constructor Summary

Constructors
Constructor Description

CassandraDaemon()

CassandraDaemon(boolean runManaged)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`activate()`	A convenience method to initialize and start the daemon in one shot.
`void`	`applyConfig()`
`void`	`clearConnectionHistory()`
`void`	`completeSetup()`
`void`	`deactivate()`	A convenience method to stop and destroy the daemon in one shot.
`void`	`destroy()`	Clean up all resources obtained during the lifetime of the daemon.
`void`	`destroyClientTransports()`
`static CassandraDaemon`	`getInstanceForTesting()`
`void`	`init(java.lang.String[] arguments)`	Initialize the Cassandra Daemon based on the given Commons Daemon-specific arguments.
`void`	`initializeClientTransports()`
`boolean`	`isNativeTransportRunning()`
`static void`	`main(java.lang.String[] args)`
`void`	`migrateSystemDataIfNeeded()`	Checks if the data of the local system keyspaces need to be migrated to a different location.
`static void`	`registerNativeAccess()`
`void`	`runStartupChecks()`
`protected void`	`setup()`	This is a hook for concrete daemons to initialize themselves suitably.
`boolean`	`setupCompleted()`
`void`	`setupVirtualKeyspaces()`
`void`	`start()`	Start the Cassandra Daemon, assuming that it has already been initialized via `init(String[])` Hook for JSVC
`void`	`startNativeTransport()`
`void`	`stop()`	Stop the daemon, ideally in an idempotent manner.
`static void`	`stop(java.lang.String[] args)`
`void`	`stopNativeTransport()`
`void`	`validateTransportsCanStart()`

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

- Field Detail
  - MBEAN_NAME
```
public static final java.lang.String MBEAN_NAME
```
    See Also:
    
    Constant Field Values
  - SPECULATION_THRESHOLD_UPDATER
```
public static java.lang.Runnable SPECULATION_THRESHOLD_UPDATER
```
  - startupChecks
```
protected final StartupChecks startupChecks
```
- Constructor Detail
  - CassandraDaemon
```
public CassandraDaemon()
```
  - CassandraDaemon
```
public CassandraDaemon(boolean runManaged)
```
- Method Detail
  - getInstanceForTesting
```
public static CassandraDaemon getInstanceForTesting()
```
  - setup
```
protected void setup()
```
    This is a hook for concrete daemons to initialize themselves suitably. Subclasses should override this to finish the job (listening on ports, etc.)
  - runStartupChecks
```
public void runStartupChecks()
```
  - migrateSystemDataIfNeeded
```
public void migrateSystemDataIfNeeded()
                               throws java.io.IOException
```
    Checks if the data of the local system keyspaces need to be migrated to a different location.
    
    Throws:
    
    java.io.IOException
  - setupVirtualKeyspaces
```
public void setupVirtualKeyspaces()
```
  - initializeClientTransports
```
public void initializeClientTransports()
```
  - completeSetup
```
public void completeSetup()
```
  - setupCompleted
```
public boolean setupCompleted()
```
  - init
```
public void init(java.lang.String[] arguments)
          throws java.io.IOException
```
    Initialize the Cassandra Daemon based on the given Commons Daemon-specific arguments. To clarify, this is a hook for JSVC.
    
    Parameters:
    
    arguments - the arguments passed in from JSVC
    
    Throws:
    
    java.io.IOException
  - start
```
public void start()
```
    Start the Cassandra Daemon, assuming that it has already been initialized via init(String[]) Hook for JSVC
  - stop
```
public void stop()
```
    Stop the daemon, ideally in an idempotent manner. Hook for JSVC / Procrun
  - destroyClientTransports
```
public void destroyClientTransports()
```
  - destroy
```
public void destroy()
```
    Clean up all resources obtained during the lifetime of the daemon. This is a hook for JSVC.
  - activate
```
public void activate()
```
    A convenience method to initialize and start the daemon in one shot.
  - registerNativeAccess
```
public static void registerNativeAccess()
                                 throws javax.management.NotCompliantMBeanException
```
    Throws:
    
    javax.management.NotCompliantMBeanException
  - applyConfig
```
public void applyConfig()
```
  - validateTransportsCanStart
```
public void validateTransportsCanStart()
```
  - startNativeTransport
```
public void startNativeTransport()
```
  - stopNativeTransport
```
public void stopNativeTransport()
```
  - isNativeTransportRunning
```
public boolean isNativeTransportRunning()
```
  - deactivate
```
public void deactivate()
```
    A convenience method to stop and destroy the daemon in one shot.
  - stop
```
public static void stop(java.lang.String[] args)
```
  - main
```
public static void main(java.lang.String[] args)
```
  - clearConnectionHistory
```
public void clearConnectionHistory()
```

Modifier and Type	Field	Description
`static java.lang.String`	`MBEAN_NAME`
`static java.lang.Runnable`	`SPECULATION_THRESHOLD_UPDATER`
`protected StartupChecks`	`startupChecks`

Constructors
Constructor	Description
`CassandraDaemon()`
`CassandraDaemon(boolean runManaged)`

Class CassandraDaemon

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MBEAN_NAME

SPECULATION_THRESHOLD_UPDATER

startupChecks

Constructor Detail

CassandraDaemon

CassandraDaemon

Method Detail

getInstanceForTesting

setup

runStartupChecks

migrateSystemDataIfNeeded

setupVirtualKeyspaces

initializeClientTransports

completeSetup

setupCompleted

init

start

stop

destroyClientTransports

destroy

activate

registerNativeAccess

applyConfig

validateTransportsCanStart

startNativeTransport

stopNativeTransport

isNativeTransportRunning

deactivate

stop

main

clearConnectionHistory