io.silverware.microservices

Class Executor

java.lang.Object

io.silverware.microservices.Executor

All Implemented Interfaces:

MicroserviceProvider, ProvidingSilverService, SilverService, Runnable

public class Executor
extends Object
implements MicroserviceProvider, ProvidingSilverService

The main Microservice provider that starts all other providers.

Author:

Martin Večeřa

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Executor.ShutdownHook

Field Summary

Fields

Modifier and Type	Field and Description
static String	BOOT_THREAD Name of the thread that boots the platform.
static String	MAIN_THREAD Name of the main thread of the platform.
static String	SHUTDOWN_HOOK Property to omit a shutdown hook.
static String	THREAD_PREFIX Prefix of names of threads running Microservice providers.

Constructor Summary

Constructors

Constructor and Description
Executor()

Method Summary

Modifier and Type	Method and Description
static void	bootHook() The main entry point to the platform.
static void	bootHook(Context initialContext) The main entry point to the platform.
Context	getContext() Gets the current context this instance has been created with.
void	initialize(Context context)
Set<Object>	lookupMicroservice(MicroserviceMetaData metaData) Looks up all available Microservices supported by this provider.
void	run() Searches for Microservice providers, creates their instances and starts them.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.silverware.microservices.silver.ProvidingSilverService

lookupLocalMicroservice

Field Detail

THREAD_PREFIX

public static final String THREAD_PREFIX

Prefix of names of threads running Microservice providers.

See Also:

Constant Field Values

BOOT_THREAD

public static final String BOOT_THREAD

Name of the thread that boots the platform.

See Also:

Constant Field Values

MAIN_THREAD

public static final String MAIN_THREAD

Name of the main thread of the platform.

See Also:

Constant Field Values

SHUTDOWN_HOOK

public static final String SHUTDOWN_HOOK

Property to omit a shutdown hook. Useful for tests mainly.

See Also:

Constant Field Values

Constructor Detail

Executor

public Executor()

Method Detail

bootHook

public static void bootHook()
                     throws InterruptedException

The main entry point to the platform. This creates a default empty context.

Throws:

InterruptedException - If the main thread fails for any reason.

bootHook

public static void bootHook(Context initialContext)
                     throws InterruptedException

The main entry point to the platform. Uses an already created context.

Parameters:

initialContext - The context associated with this platform instance.

Throws:

InterruptedException - If the main thread was interrupted. This does not mean anything wrong has happened - it is a normal shutdown procedure.

initialize

public void initialize(Context context)

Specified by:

initialize in interface MicroserviceProvider

run

public void run()

Searches for Microservice providers, creates their instances and starts them. Continues execution as long as there are any active providers.

Specified by:

run in interface MicroserviceProvider

Specified by:

run in interface Runnable

lookupMicroservice

public Set<Object> lookupMicroservice(MicroserviceMetaData metaData)

Description copied from interface: ProvidingSilverService

Looks up all available Microservices supported by this provider.

Specified by:

lookupMicroservice in interface ProvidingSilverService

Parameters:

metaData - Meta-data query.

Returns:

All available Microservices supported by this provider that meet the given query.

getContext

public Context getContext()

Description copied from interface: SilverService

Gets the current context this instance has been created with.

Specified by:

getContext in interface SilverService

Returns:

The current context this instance has been created with.