BaseService (Camel :: API 3.7.2 API)

java.lang.Object
- org.apache.camel.support.service.BaseService

Direct Known Subclasses:

ServiceSupport
```
public abstract class BaseService
extends Object
```
A useful base class which ensures that a service is only initialized once and provides some helper methods for enquiring of its status.
Implementations can extend this base class and implement SuspendableService in case they support suspend/resume.
Important: You should override the lifecycle methods that start with do, eg doStart()}, doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.

Field Summary

Fields
Modifier and Type	Field and Description
`protected static byte`	`BUILT`
`protected static byte`	`FAILED`
`protected static byte`	`INITIALIZED`
`protected static byte`	`INITIALIZING`
`protected Object`	`lock`
`protected static byte`	`NEW`
`protected static byte`	`SHUTDOWN`
`protected static byte`	`SHUTTING_DOWN`
`protected static byte`	`STARTED`
`protected static byte`	`STARTING`
`protected byte`	`status`
`protected static byte`	`STOPPED`
`protected static byte`	`STOPPING`
`protected static byte`	`SUSPENDED`
`protected static byte`	`SUSPENDING`

Constructor Summary

Constructors
Constructor and Description

BaseService()

Constructors
Constructor and Description
`BaseService()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`build()`
`protected void`	`doBuild()` Optional build phase of the service.
`protected void`	`doFail(Exception e)` Implementations override this method to perform any action upon failure.
`protected void`	`doInit()` Initialize the service.
`protected AutoCloseable`	`doLifecycleChange()` Implementations may return an object that will be closed when the lifecycle action is completed.
`protected void`	`doResume()` Implementations override this method to support customized suspend/resume.
`protected void`	`doShutdown()` Implementations override this method to perform customized shutdown.
`protected void`	`doStart()` Implementations override this method to support customized start/stop.
`protected void`	`doStop()` Implementations override this method to support customized start/stop.
`protected void`	`doSuspend()` Implementations override this method to support customized suspend/resume.
`protected void`	`fail(Exception e)`
`ServiceStatus`	`getStatus()`
`void`	`init()`
`boolean`	`isBuild()`
`boolean`	`isInit()`
`boolean`	`isNew()`
`boolean`	`isRunAllowed()`
`boolean`	`isShutdown()`
`boolean`	`isStarted()`
`boolean`	`isStarting()`
`boolean`	`isStartingOrStarted()` Is the service in progress of being suspended or already suspended
`boolean`	`isStopped()`
`boolean`	`isStopping()`
`boolean`	`isStoppingOrStopped()` Is the service in progress of being stopped or already stopped
`boolean`	`isSuspended()`
`boolean`	`isSuspending()`
`boolean`	`isSuspendingOrSuspended()` Is the service in progress of being suspended or already suspended
`void`	`resume()` Important: You should override the lifecycle methods that start with `do`, eg `doStart()`, `doStop()`, etc.
`void`	`shutdown()` Important: You should override the lifecycle methods that start with `do`, eg `doStart()`, `doStop()`, etc.
`void`	`start()` Important: You should override the lifecycle methods that start with `do`, eg `doStart()`, `doStop()`, etc.
`void`	`stop()` Important: You should override the lifecycle methods that start with `do`, eg `doStart()`, `doStop()`, etc.
`void`	`suspend()` Important: You should override the lifecycle methods that start with `do`, eg `doStart()`, `doStop()`, etc.

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

- Field Detail
  - NEW
```
protected static final byte NEW
```
    See Also:
    
    Constant Field Values
  - BUILT
```
protected static final byte BUILT
```
    See Also:
    
    Constant Field Values
  - INITIALIZING
```
protected static final byte INITIALIZING
```
    See Also:
    
    Constant Field Values
  - INITIALIZED
```
protected static final byte INITIALIZED
```
    See Also:
    
    Constant Field Values
  - STARTING
```
protected static final byte STARTING
```
    See Also:
    
    Constant Field Values
  - STARTED
```
protected static final byte STARTED
```
    See Also:
    
    Constant Field Values
  - SUSPENDING
```
protected static final byte SUSPENDING
```
    See Also:
    
    Constant Field Values
  - SUSPENDED
```
protected static final byte SUSPENDED
```
    See Also:
    
    Constant Field Values
  - STOPPING
```
protected static final byte STOPPING
```
    See Also:
    
    Constant Field Values
  - STOPPED
```
protected static final byte STOPPED
```
    See Also:
    
    Constant Field Values
  - SHUTTING_DOWN
```
protected static final byte SHUTTING_DOWN
```
    See Also:
    
    Constant Field Values
  - SHUTDOWN
```
protected static final byte SHUTDOWN
```
    See Also:
    
    Constant Field Values
  - FAILED
```
protected static final byte FAILED
```
    See Also:
    
    Constant Field Values
  - lock
```
protected final Object lock
```
  - status
```
protected volatile byte status
```
- Constructor Detail
  - BaseService
```
public BaseService()
```
- Method Detail
  - build
```
public void build()
```
  - init
```
public void init()
```
  - start
```
public void start()
```
    Important: You should override the lifecycle methods that start with do, eg doStart(), doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.
  - stop
```
public void stop()
```
    Important: You should override the lifecycle methods that start with do, eg doStart(), doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.
  - suspend
```
public void suspend()
```
    Important: You should override the lifecycle methods that start with do, eg doStart(), doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.
  - resume
```
public void resume()
```
    Important: You should override the lifecycle methods that start with do, eg doStart(), doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.
  - shutdown
```
public void shutdown()
```
    Important: You should override the lifecycle methods that start with do, eg doStart(), doStop(), etc. where you implement your logic. The methods start(), stop() should NOT be overridden as they are used internally to keep track of the state of this service and properly invoke the operation in a safe manner.
  - getStatus
```
public ServiceStatus getStatus()
```
  - isNew
```
public boolean isNew()
```
  - isBuild
```
public boolean isBuild()
```
  - isInit
```
public boolean isInit()
```
  - isStarted
```
public boolean isStarted()
```
  - isStarting
```
public boolean isStarting()
```
  - isStopping
```
public boolean isStopping()
```
  - isStopped
```
public boolean isStopped()
```
  - isSuspending
```
public boolean isSuspending()
```
  - isSuspended
```
public boolean isSuspended()
```
  - isRunAllowed
```
public boolean isRunAllowed()
```
  - isShutdown
```
public boolean isShutdown()
```
  - isStoppingOrStopped
```
public boolean isStoppingOrStopped()
```
    Is the service in progress of being stopped or already stopped
  - isSuspendingOrSuspended
```
public boolean isSuspendingOrSuspended()
```
    Is the service in progress of being suspended or already suspended
  - isStartingOrStarted
```
public boolean isStartingOrStarted()
```
    Is the service in progress of being suspended or already suspended
  - fail
```
protected void fail(Exception e)
```
  - doBuild
```
protected void doBuild()
                throws Exception
```
    Optional build phase of the service. This method will only be called by frameworks which supports pre-building projects such as camel-quarkus.
    
    Throws:
    
    Exception
  - doInit
```
protected void doInit()
               throws Exception
```
    Initialize the service. This method will only be called once before starting.
    
    Throws:
    
    Exception
  - doStart
```
protected void doStart()
                throws Exception
```
    Implementations override this method to support customized start/stop.
    Important: See doStop() for more details.
    
    Throws:
    
    Exception
    
    See Also:
    
    doStop()
  - doStop
```
protected void doStop()
               throws Exception
```
    Implementations override this method to support customized start/stop.
    Important: Camel will invoke this doStop() method when the service is being stopped. This method will also be invoked if the service is still in uninitialized state (eg has not been started). The method is always called to allow the service to do custom logic when the service is being stopped, such as when CamelContext is shutting down.
    
    Throws:
    
    Exception
    
    See Also:
    
    doStart()
  - doSuspend
```
protected void doSuspend()
                  throws Exception
```
    Implementations override this method to support customized suspend/resume.
    
    Throws:
    
    Exception
  - doResume
```
protected void doResume()
                 throws Exception
```
    Implementations override this method to support customized suspend/resume.
    
    Throws:
    
    Exception
  - doShutdown
```
protected void doShutdown()
                   throws Exception
```
    Implementations override this method to perform customized shutdown.
    
    Throws:
    
    Exception
  - doFail
```
protected void doFail(Exception e)
```
    Implementations override this method to perform any action upon failure.
  - doLifecycleChange
```
protected AutoCloseable doLifecycleChange()
```
    Implementations may return an object that will be closed when the lifecycle action is completed.

Class BaseService

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NEW

BUILT

INITIALIZING

INITIALIZED

STARTING

STARTED

SUSPENDING

SUSPENDED

STOPPING

STOPPED

SHUTTING_DOWN

SHUTDOWN

FAILED

lock

status

Constructor Detail

BaseService

Method Detail

build

init

start

stop

suspend

resume

shutdown

getStatus

isNew

isBuild

isInit

isStarted

isStarting

isStopping

isStopped

isSuspending

isSuspended

isRunAllowed

isShutdown

isStoppingOrStopped

isSuspendingOrSuspended

isStartingOrStarted

fail

doBuild

doInit

doStart

doStop

doSuspend

doResume

doShutdown

doFail

doLifecycleChange