com.staros.service

Class ServiceManager

java.lang.Object

com.staros.service.ServiceManager

public class ServiceManager
extends java.lang.Object

Service Manager handles all operations that are related to Service, including service registration, service bootstrap, etc.

Constructor Summary

Constructors

Constructor and Description
ServiceManager()
ServiceManager(JournalSystem journalSystem, IdGenerator idGenerator)

Method Summary

Modifier and Type	Method and Description
java.lang.String	bootstrapService(java.lang.String serviceTemplateName, java.lang.String serviceName) Bootstrap a service
void	deregisterService(java.lang.String name) Deregister a service template
void	dump(java.io.DataOutputStream out)
void	dumpMeta(java.io.OutputStream out) Dump ServiceManager info into checkpoint image
boolean	existService(java.lang.String serviceId)
FileStoreMgr	getFileStoreMgr(java.lang.String serviceId)
int	getServiceCount()
java.util.Set<java.lang.String>	getServiceIdSet()
ServiceInfo	getServiceInfoById(java.lang.String serviceId) Get a service info
ServiceInfo	getServiceInfoByName(java.lang.String serviceName) Get a service info
int	getServiceTemplateCount()
ShardManager	getShardManager(java.lang.String serviceId)
void	loadMeta(java.io.InputStream in)
java.util.concurrent.locks.Lock	readLock()
void	registerService(java.lang.String name, java.util.List<java.lang.String> serviceComponents) Register a service template
void	replayBootstrapService(Service service)
void	replayDeregisterService(java.lang.String name)
void	replayRegisterService(ServiceTemplate serviceTemplate)
void	replayShutdownService(Service service)
void	replayUpdateFileStore(java.lang.String serviceId, FileStoreInfo fsInfo)
void	setShardScheduler(Scheduler shardScheduler)
void	shutdownService(java.lang.String serviceId) Shutdown a service
void	updateFileStore(java.lang.String serviceId, FileStoreInfo fsInfo)
java.util.concurrent.locks.Lock	writeLock()

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceManager

public ServiceManager()

ServiceManager

public ServiceManager(JournalSystem journalSystem,
                      IdGenerator idGenerator)

Method Detail

registerService

public void registerService(java.lang.String name,
                            java.util.List<java.lang.String> serviceComponents)
                     throws StarException

Register a service template

Parameters:

name - service template name

serviceComponents - service component that describes this service template

Throws:

StarException - if service template already exists

deregisterService

public void deregisterService(java.lang.String name)
                       throws StarException

Deregister a service template

Parameters:

name - service template name

Throws:

StarException - if service template does not exist, or this service template has running service

bootstrapService

public java.lang.String bootstrapService(java.lang.String serviceTemplateName,
                                         java.lang.String serviceName)
                                  throws StarException

Bootstrap a service

Parameters:

serviceTemplateName - service template name

serviceName - service name

Throws:

StarException - if service template does not exist, or this service is already bootstraped

shutdownService

public void shutdownService(java.lang.String serviceId)
                     throws StarException

Shutdown a service

Parameters:

serviceId - service id

Throws:

StarException - if service does not exist

getServiceInfoById

public ServiceInfo getServiceInfoById(java.lang.String serviceId)
                               throws StarException

Get a service info

Parameters:

serviceId - service id

Throws:

StarException - if service does not exist

getServiceInfoByName

public ServiceInfo getServiceInfoByName(java.lang.String serviceName)
                                 throws StarException

Get a service info

Parameters:

serviceName - service name

Throws:

StarException - if service does not exist

getServiceTemplateCount

public int getServiceTemplateCount()

getServiceCount

public int getServiceCount()

existService

public boolean existService(java.lang.String serviceId)

readLock

public java.util.concurrent.locks.Lock readLock()

writeLock

public java.util.concurrent.locks.Lock writeLock()

setShardScheduler

public void setShardScheduler(Scheduler shardScheduler)

getShardManager

public ShardManager getShardManager(java.lang.String serviceId)

replayRegisterService

public void replayRegisterService(ServiceTemplate serviceTemplate)

replayDeregisterService

public void replayDeregisterService(java.lang.String name)

replayBootstrapService

public void replayBootstrapService(Service service)

replayShutdownService

public void replayShutdownService(Service service)

replayUpdateFileStore

public void replayUpdateFileStore(java.lang.String serviceId,
                                  FileStoreInfo fsInfo)

dumpMeta

public void dumpMeta(java.io.OutputStream out)
              throws java.io.IOException

Dump ServiceManager info into checkpoint image

Parameters:

out - Output Stream

Throws:

java.io.IOException - I/O exception

  +----------------------+
  |  SERVICE_MGR_HEADER  | (number of service template, number of services)
  +----------------------+
  | SERVICE_MGR_SVC_TMPLS|
  +--------------------- +
  |       Templates      |
  +----------------------+
  |   SERVICE_MGR_SVCS   |
  +----------------------+
  |        Services      |
  +----------------------+
  | SERVICE_MGR_SHARD_MGR|
  +----------------------+
  |     SERVICE_ID_1     |
  |    SHARDMANAGER_1    |
  |     SERVICE_ID_2     |
  |    SHARDMANAGER_2    |
  |        ...           |
  |     SERVICE_ID_N     |
  |    SHARDMANAGER_N    |
  +----------------------+
 

loadMeta

public void loadMeta(java.io.InputStream in)
              throws java.io.IOException

Throws:

java.io.IOException

getServiceIdSet

public java.util.Set<java.lang.String> getServiceIdSet()

updateFileStore

public void updateFileStore(java.lang.String serviceId,
                            FileStoreInfo fsInfo)

dump

public void dump(java.io.DataOutputStream out)
          throws java.io.IOException

Throws:

java.io.IOException

getFileStoreMgr

public FileStoreMgr getFileStoreMgr(java.lang.String serviceId)
                             throws StarException

Throws:

StarException