Class AbstractApiService (2.3.1)

  public 
  
 abstract 
  
 class 
 AbstractApiService 
  
 implements 
  
 ApiService 
 

Base class for ApiService . Similar to Guava's AbstractService but redeclared so that Guava can be shaded.

Inheritance

java.lang.Object > AbstractApiService

Implements

ApiService

Constructors

AbstractApiService()

  protected 
  
 AbstractApiService 
 () 
 

Methods

addListener(ApiService.Listener listener, Executor executor)

  public 
  
 void 
  
 addListener 
 ( 
 ApiService 
 . 
 Listener 
  
 listener 
 , 
  
 Executor 
  
 executor 
 ) 
 

Registers a Listener to be executed on the given executor. The listener will have the corresponding transition method called whenever the service changes state. The listener will not have previous state changes replayed, so it is suggested that listeners are added before the service starts.

addListener guarantees execution ordering across calls to a given listener but not across calls to multiple listeners. Specifically, a given listener will have its callbacks invoked in the same order as the underlying service enters those states. Additionally, at most one of the listener's callbacks will execute at once. However, multiple listeners' callbacks may execute concurrently, and listeners may execute in an order different from the one in which they were registered.

RuntimeExceptions thrown by a listener will be caught and logged. Any exception thrown during Executor.execute (e.g., a RejectedExecutionException ) will be caught and logged.

Parameters
Name Description
listener ApiService.Listener
executor Executor

awaitRunning()

  public 
  
 void 
  
 awaitRunning 
 () 
 

Waits for the ApiService to reach the running state .

awaitRunning(long timeout, TimeUnit unit)

  public 
  
 void 
  
 awaitRunning 
 ( 
 long 
  
 timeout 
 , 
  
 TimeUnit 
  
 unit 
 ) 
 

Waits for the ApiService to reach the running state for no more than the given time.

Parameters
Name Description
timeout long
unit TimeUnit
Exceptions
Type Description
TimeoutException

awaitTerminated()

  public 
  
 void 
  
 awaitTerminated 
 () 
 

Waits for the ApiService to reach the terminated state .

awaitTerminated(long timeout, TimeUnit unit)

  public 
  
 void 
  
 awaitTerminated 
 ( 
 long 
  
 timeout 
 , 
  
 TimeUnit 
  
 unit 
 ) 
 

Waits for the ApiService to reach a terminal state (either terminated or failed ) for no more than the given time.

Parameters
Name Description
timeout long
unit TimeUnit
Exceptions
Type Description
TimeoutException

doStart()

  protected 
  
 abstract 
  
 void 
  
 doStart 
 () 
 

doStop()

  protected 
  
 abstract 
  
 void 
  
 doStop 
 () 
 

failureCause()

  public 
  
 Throwable 
  
 failureCause 
 () 
 

Returns the Throwable that caused this service to fail.

Returns
Type Description
Throwable

isRunning()

  public 
  
 boolean 
  
 isRunning 
 () 
 

Returns true if this service is running .

Returns
Type Description
boolean

notifyFailed(Throwable cause)

  protected 
  
 void 
  
 notifyFailed 
 ( 
 Throwable 
  
 cause 
 ) 
 
Parameter
Name Description
cause Throwable

notifyStarted()

  protected 
  
 void 
  
 notifyStarted 
 () 
 

notifyStopped()

  protected 
  
 void 
  
 notifyStopped 
 () 
 

startAsync()

  public 
  
 ApiService 
  
 startAsync 
 () 
 

If the service state is State#NEW , this initiates service startup and returns immediately. A stopped service may not be restarted.

Returns
Type Description
ApiService

state()

  public 
  
 ApiService 
 . 
 State 
  
 state 
 () 
 

Returns the lifecycle state of the service.

Returns
Type Description
ApiService.State

stopAsync()

  public 
  
 ApiService 
  
 stopAsync 
 () 
 

If the service is starting or running , this initiates service shutdown and returns immediately. If the service is new , it is terminated without having been started nor stopped. If the service has already been stopped, this method returns immediately without taking action.

Returns
Type Description
ApiService
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