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Jadex bridge is a base package for kernels and platforms, i.e., it is used by both and provides commonly used interfaces and classes for active components and their management.
package jadex.bridge.service.search;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import jadex.base.Starter;
import jadex.bridge.IComponentIdentifier;
import jadex.bridge.IInternalAccess;
import jadex.bridge.service.IService;
import jadex.bridge.service.IServiceIdentifier;
import jadex.bridge.service.ServiceScope;
import jadex.commons.SUtil;
import jadex.commons.Tuple2;
import jadex.commons.future.Future;
import jadex.commons.future.IFuture;
import jadex.commons.future.ISubscriptionIntermediateFuture;
import jadex.commons.future.SubscriptionIntermediateFuture;
import jadex.commons.future.TerminableIntermediateFuture;
import jadex.commons.future.TerminationCommand;
/**
* Local service registry.
*
* - Search fetches services by types and excludes some according to the scope.
* - Allows for adding persistent queries.
*/
public class ServiceRegistry implements IServiceRegistry // extends AbstractServiceRegistry
{
//-------- attributes --------
/** Read-Write Lock */
protected ReadWriteLock rwlock;
/** The service indexer. */
protected Indexer indexer;
/** The persistent service queries. */
protected Indexer> queries;
/** The excluded services cache. */
protected Map> excludedservices;
/** Read-Write Lock for proxy map. */
protected ReadWriteLock proxyrwlock;
/** Map for looking up local services using the service identifier. */
protected Map localserviceproxies;
/** The query change subscribers. */
protected List> querysubs;
//-------- methods --------
/**
* Create a new registry.
*/
public ServiceRegistry()
{
this.rwlock = new ReentrantReadWriteLock(false);
this.proxyrwlock = new ReentrantReadWriteLock(false);
this.indexer = new Indexer<>(new ServiceKeyExtractor(), false, ServiceKeyExtractor.SERVICE_KEY_TYPES);
this.queries = new Indexer>(new QueryInfoExtractor(), true, QueryInfoExtractor.QUERY_KEY_TYPES_INDEXABLE);
this.localserviceproxies = new HashMap<>();
this.querysubs = new ArrayList<>();
}
/**
* Search for services.
*/
// read
// @SuppressWarnings("unchecked")
public IServiceIdentifier searchService(final ServiceQuery query)
{
// if(query.toString().indexOf("ISecurity")!=-1)
// System.out.println("sdgo");
IServiceIdentifier ret = null;
if(!ServiceScope.NONE.equals(query.getScope()))
{
Set sers = getServices(query);
if(query.toString().indexOf("IComponentFac")!=-1 && sers.size()==0)
System.out.println("found: "+sers);
// Set ownerservices = null;
// rwlock.readLock().lock();
// try
// {
// ownerservices = query.isExcludeOwner()? indexer.getValues(ServiceKeyExtractor.KEY_TYPE_PROVIDER, query.getOwner().toString()) : null;
// }
// finally
// {
// rwlock.readLock().unlock();
// }
if(sers!=null && !sers.isEmpty())
{
for(IServiceIdentifier ser : sers)
{
if(checkRestrictions(query, ser))// &&
// (ownerservices == null || !ownerservices.contains(ser)))
{
ret = ser;
break;
}
}
}
}
return ret;
}
/**
* Search for services.
*/
// read
// @SuppressWarnings("unchecked")
public Set searchServices(ServiceQuery query)
{
Set ret = null;
if(!ServiceScope.NONE.equals(query.getScope()))
{
ret = getServices(query);
// Set ownerservices = null;
// rwlock.readLock().lock();
// try
// {
// ownerservices = query.isExcludeOwner()? indexer.getValues(ServiceKeyExtractor.KEY_TYPE_PROVIDER, query.getOwner().toString()) : null;
// }
// finally
// {
// rwlock.readLock().unlock();
// }
if(ret!=null && !ret.isEmpty())
{
for(Iterator it = ret.iterator(); it.hasNext(); )
{
IServiceIdentifier ser = it.next();
if(!checkRestrictions(query, ser)) // ||
// !(ownerservices == null || !ownerservices.contains(ser)))
{
it.remove();
}
}
}
}
if (ret == null)
ret = Collections.emptySet();
return ret;
}
/**
* Add a service to the registry.
* @param service The service.
*/
// write
public void addService(IServiceIdentifier service)
{
Lock lock = rwlock.writeLock();
lock.lock();
try
{
indexer.removeValue(service);
indexer.addValue(service);
// If services belongs to excluded component cache them
IComponentIdentifier cid = service.getProviderId();
if(excludedservices!=null && excludedservices.containsKey(cid))
{
if(excludedservices==null)
excludedservices = new HashMap<>();
Set exsers = excludedservices.get(cid);
if(exsers==null)
{
exsers = new HashSet<>();
excludedservices.put(cid, exsers);
}
exsers.add(service);
}
else
{
// Downgrade to read lock.
lock = rwlock.readLock();
lock.lock();
rwlock.writeLock().unlock();
checkQueries(service, ServiceEvent.SERVICE_ADDED);
}
}
finally
{
if(lock != null)
lock.unlock();
}
}
/**
* Add a local service to the registry.
* @param service The local service.
*/
// write
public void addLocalService(IService service)
{
// TODO: Optimize write lock acquisition (done twice for local service)
proxyrwlock.writeLock().lock();
try
{
localserviceproxies.put(service.getServiceId(), service);
}
finally
{
proxyrwlock.writeLock().unlock();
}
addService(service.getServiceId());
}
/**
* Updates a service if the service meta-information
* has changes.
*
* @param service The service.
*/
public void updateService(IServiceIdentifier service)
{
if(service == null)
{
rwlock.writeLock().lock();
Set services = indexer.getAllValues();
try
{
for(IServiceIdentifier ser : services)
{
indexer.removeValue(ser);
indexer.addValue(ser);
}
}
finally
{
rwlock.writeLock().unlock();
}
for(IServiceIdentifier ser : services)
checkQueries(ser, ServiceEvent.SERVICE_CHANGED);
}
else
{
rwlock.writeLock().lock();
try
{
indexer.removeValue(service);
indexer.addValue(service);
}
finally
{
rwlock.writeLock().unlock();
}
checkQueries(service, ServiceEvent.SERVICE_CHANGED);
}
}
/**
* Updates a service if the service meta-information
* has changes.
*
* @param service The service (null = all).
*/
public void updateService(IServiceIdentifier service, String propname)
{
if(indexer.isIndexed(propname) && service==null)
{
rwlock.writeLock().lock();
Set services = indexer.getAllValues();
try
{
indexer.updateIndex(propname);
}
finally
{
rwlock.writeLock().unlock();
}
// todo: get only changed?!
for(IServiceIdentifier ser : services)
checkQueries(ser, ServiceEvent.SERVICE_CHANGED);
}
else
{
updateService(service);
}
}
/**
* Remove a service from the registry.
* @param sid The service id.
*/
// write
public void removeService(IServiceIdentifier service)
{
//System.out.println("removing service: "+service);
Lock lock = rwlock.writeLock();
lock.lock();
try
{
indexer.removeValue(service);
// Downgrade to read lock.
lock = rwlock.readLock();
lock.lock();
rwlock.writeLock().unlock();
checkQueries(service, ServiceEvent.SERVICE_REMOVED);
}
finally
{
lock.unlock();
}
proxyrwlock.writeLock().lock();
try
{
localserviceproxies.remove(service);
}
finally
{
proxyrwlock.writeLock().unlock();
}
}
/**
* Remove services of a platform from the registry.
* @param platform The platform, null for everything.
*/
// write
public void removeServices(IComponentIdentifier platform)
{
Set pservs = null;
Lock lock = rwlock.writeLock();
lock.lock();
try
{
if (platform == null)
pservs = indexer.getAllValues();
else
pservs = indexer.getValues(ServiceKeyExtractor.KEY_TYPE_PLATFORM, platform.toString());
if(pservs != null)
{
for(IServiceIdentifier serv : pservs)
{
indexer.removeValue(serv);
}
}
// Downgrade to read lock.
lock = rwlock.readLock();
lock.lock();
rwlock.writeLock().unlock();
if(pservs!=null)
{
for(IServiceIdentifier serv : pservs)
checkQueries(serv, ServiceEvent.SERVICE_REMOVED);
}
}
finally
{
lock.unlock();
}
if (pservs != null && pservs.size() > 0)
{
proxyrwlock.writeLock().lock();
try
{
for (IServiceIdentifier serv : pservs)
localserviceproxies.remove(serv);
}
finally
{
proxyrwlock.writeLock().unlock();
}
}
}
/**
* Remove services of a platform from the registry.
* @param platform The platform.
*/
// write
/*public void removeServicesExcept(IComponentIdentifier platform)
{
Lock lock = rwlock.writeLock();
lock.lock();
try
{
Set pservs = indexer.getAllValues();
if(pservs != null)
{
for(IServiceIdentifier serv : pservs)
{
if(!serv.getProviderId().getRoot().equals(platform))
{
indexer.removeValue(serv);
}
}
}
// Downgrade to read lock.
lock = rwlock.readLock();
lock.lock();
rwlock.writeLock().unlock();
if(pservs != null)
{
for(IServiceIdentifier serv : pservs)
{
if(!serv.getProviderId().getRoot().equals(platform))
checkQueries(serv, ServiceEvent.SERVICE_REMOVED);
}
}
}
finally
{
lock.unlock();
}
}*/
/**
* Returns the service proxy of a local service identified by service ID.
*
* @param serviceid The service ID.
* @return The service proxy.
*/
public IService getLocalService(IServiceIdentifier serviceid)
{
IService ret = null;
proxyrwlock.readLock().lock();
try
{
ret = localserviceproxies.get(serviceid);
}
finally
{
proxyrwlock.readLock().unlock();
}
return ret;
}
/**
* Get all services.
* @return All services (copy).
*/
public Set getAllServices()
{
rwlock.readLock().lock();
try
{
return indexer.getAllValues();
}
finally
{
rwlock.readLock().unlock();
}
}
/**
* Get all queries.
* @return All queries (copy).
*/
public Set> getAllQueries()
{
rwlock.readLock().lock();
try
{
return queries.getAllValues();
}
finally
{
rwlock.readLock().unlock();
}
}
/**
* Returns the lock on the registry.
* Care must be taken to perform proper unlocking
* to avoid permanently blocking the registry.
* Note that the lock is reentrant, so operations
* can be performed while the lock is held.
*
* @return The registry lock.
*/
public ReadWriteLock getLock()
{
return rwlock;
}
/**
* Add a service query to the registry.
* @param query ServiceQuery.
*/
@SuppressWarnings({ "rawtypes" })
public ISubscriptionIntermediateFuture addQuery(final ServiceQuery query)
{
final SubscriptionIntermediateFuture fut = new SubscriptionIntermediateFuture<>();
if(query.getOwner()==null)
{
fut.setException(new IllegalArgumentException("Query owner must not null: "+query));
}
else
{
ServiceQueryInfo ret = null;
fut.setTerminationCommand(new TerminationCommand()
{
public void terminated(Exception reason)
{
removeQuery(query);
}
});
rwlock.writeLock().lock();
Set sers = null;
try
{
ret = new ServiceQueryInfo((ServiceQuery) query, fut);
queries.addValue((ServiceQueryInfo)ret);
// We need the write lock during read for consistency
// This works because rwlock is reentrant.
// deliver currently available services
sers = (Set)getServices(query);
}
finally
{
rwlock.writeLock().unlock();
}
for(IServiceIdentifier ser : SUtil.notNull(sers))
{
if(checkRestrictions(query, ser))
{
dispatchQueryEvent(ret, ser, ServiceEvent.SERVICE_ADDED);
}
}
}
notifyQueryListeners(new QueryEvent(query, QueryEvent.QUERY_ADDED));
return fut;
}
/**
* Remove a service query from the registry.
* @param query ServiceQuery.
*/
// write
public void removeQuery(final ServiceQuery query)
{
rwlock.writeLock().lock();
try
{
Set> qi = queries.getValues(QueryInfoExtractor.KEY_TYPE_ID, query.getId());
if(qi!=null)
{
queries.removeValue(qi.iterator().next());
}
else
{
System.out.println("query not found for removeQuery(): "+query.getId());
}
}
finally
{
rwlock.writeLock().unlock();
}
notifyQueryListeners(new QueryEvent(query, QueryEvent.QUERY_REMOVED));
}
/**
* Remove all service queries of a specific component from the registry.
* @param owner The query owner.
*/
// write
public void removeQueries(IComponentIdentifier owner)
{
rwlock.writeLock().lock();
try
{
Set> qs = queries.getValues(QueryInfoExtractor.KEY_TYPE_OWNER, owner.toString());
if(qs!=null)
{
for(ServiceQueryInfo q: qs)
{
queries.removeValue(q);
}
}
}
finally
{
rwlock.writeLock().unlock();
}
}
/**
* Remove all service queries of a specific platform from the registry.
* @param platform The platform from which the query owner comes.
*/
// write
public void removeQueriesOfPlatform(IComponentIdentifier platform)
{
rwlock.writeLock().lock();
Set> qinfos = new HashSet>();
try
{
// todo: Should use index to find all services of a platform
Set> qis = queries.getValues(QueryInfoExtractor.KEY_TYPE_OWNER_PLATORM, platform.toString());
if(qis!=null)
{
for(ServiceQueryInfo sqi: qis)
{
queries.removeValue(sqi);
qinfos.add(sqi);
}
}
}
finally
{
rwlock.writeLock().unlock();
}
}
/**
* Add an excluded component.
* @param The component identifier.
*/
// write
public void addExcludedComponent(IComponentIdentifier cid)
{
rwlock.writeLock().lock();
try
{
if (excludedservices == null)
excludedservices = new HashMap<>();
excludedservices.put(cid, null);
}
finally
{
rwlock.writeLock().unlock();
}
}
/**
* Remove an excluded component.
* @param The component identifier.
*/
public void removeExcludedComponent(IComponentIdentifier cid)
{
Lock lock = rwlock.writeLock();
lock.lock();
try
{
if(excludedservices!=null)
{
Set exs = excludedservices.remove(cid);
lock.unlock();
lock = null;
// Get and remove services from cache
if(exs!=null)
{
for(IServiceIdentifier ser: exs)
{
checkQueries(ser, ServiceEvent.SERVICE_ADDED);
}
}
}
}
finally
{
if (lock != null)
lock.unlock();
}
}
/**
* Test if a service is visible, i.e. visible after init for all components or visible for subcomponents also during init.
* @param query The query.
* @param ser The service.
* @return True if is included.
*/
// read
protected boolean checkLifecycleVisibility(ServiceQuery query, IServiceIdentifier ser)
{
boolean inited;
IComponentIdentifier target = ser.getProviderId();
rwlock.readLock().lock();
try
{
inited = excludedservices == null || !excludedservices.containsKey(target);
}
finally
{
rwlock.readLock().unlock();
}
return inited || getDotName(query.getOwner()).endsWith(getDotName(target));
}
/**
* Check the persistent queries for a new service.
* @param ser The service.
* @param removed Indicates if the query was removed.
*/
// read
protected IFuture checkQueries(IServiceIdentifier ser, int eventtype)
{
Future ret = new Future();
List> spec = null;
Set> sqis = null;
rwlock.readLock().lock();
try
{
spec = ((QueryInfoExtractor)queries.getKeyExtractor()).getIndexerSpec(ser);
sqis = queries.getValuesInverted(spec);
}
finally
{
rwlock.readLock().unlock();
}
// Set> r1 = queries.getValues(QueryInfoExtractor.KEY_TYPE_INTERFACE, ser.getServiceType().toString());
// Set> r2 = queries.getValues(QueryInfoExtractor.KEY_TYPE_INTERFACE, "null");
// Set> sqis = r1;
// if(sqis!=null && r2!=null)
// sqis.addAll(r2); // safe because indexer returns copy
// else if(r2!=null)
// sqis=r2;
//
if(sqis!=null)
{
for(ServiceQueryInfo sqi : sqis)
{
ServiceQuery query = sqi.getQuery();
//ServiceEvent.CLASSINFO.getTypeName().equals(query.getReturnType().getTypeName()));
if(checkRestrictions(query, ser))
{
dispatchQueryEvent(sqi, ser, eventtype);
}
}
}
else
{
ret.setResult(null);
}
return ret;
}
@SuppressWarnings("unchecked")
protected void dispatchQueryEvent(ServiceQueryInfo queryinfo, IServiceIdentifier ser, int eventtype)
{
ServiceQuery query = queryinfo.getQuery();
if(query.isEventMode())
{
ServiceEvent event = new ServiceEvent<>(ser, eventtype);
((TerminableIntermediateFuture>)queryinfo.getFuture()).addIntermediateResultIfUndone(event);
}
else if(ServiceEvent.SERVICE_ADDED==eventtype)
{
((TerminableIntermediateFuture)queryinfo.getFuture()).addIntermediateResultIfUndone(ser);
}
}
/**
* Check the services according additional restrictions like scope.
* @param query The query.
* @param ser The service.
* @return True, if service passes tests.
*/
protected boolean checkRestrictions(ServiceQuery query, final IServiceIdentifier ser)
{
return !(query.isExcludeOwner() && query.getOwner().equals(ser.getProviderId()))
&& checkSearchScope(query, ser)
&& checkPublicationScope(query, ser)
&& checkLifecycleVisibility(query, ser);
}
/**
* Check if service is ok with respect to search scope of caller.
*/
protected boolean checkSearchScope(ServiceQuery query, IServiceIdentifier ser)
{
boolean ret = false;
ServiceScope scope = query.getScope();
// IComponentIdentifier searchstart = query.getProvider()!=null ? query.getProvider()
// : query.getPlatform()!=null ? query.getPlatform() : query.getOwner();
IComponentIdentifier searchstart = query.getSearchStart() != null ? query.getSearchStart() : query.getOwner();
if(ServiceScope.GLOBAL.equals(scope))
{
ret = true;
}
else if(ServiceScope.NETWORK.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.APPLICATION_GLOBAL.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.APPLICATION_NETWORK.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.PLATFORM.equals(scope))
{
// Test if searcher and service are on same platform
ret = searchstart.getPlatformName().equals(ser.getProviderId().getPlatformName());
}
else if(ServiceScope.APPLICATION.equals(scope))
{
IComponentIdentifier sercid = ser.getProviderId();
ret = sercid.getPlatformName().equals(searchstart.getPlatformName())
&& getApplicationName(sercid).equals(getApplicationName(searchstart));
}
else if(ServiceScope.COMPONENT.equals(scope))
{
IComponentIdentifier sercid = ser.getProviderId();
ret = getDotName(sercid).endsWith(getDotName(searchstart));
}
else if(ServiceScope.COMPONENT_ONLY.equals(scope))
{
// only the component itself
ret = ser.getProviderId().equals(searchstart);
}
else if(ServiceScope.PARENT.equals(scope))
{
// check if parent of searcher reaches the service
IComponentIdentifier sercid = ser.getProviderId();
String subname = getSubcomponentName(searchstart);
ret = sercid.getName().endsWith(subname);
}
//if(query.getServiceType()!=null && query.getServiceType().toString().indexOf("Calc")!=-1)
// System.out.println("calc check: "+query.getOwner()+" "+scope+" "+ser+" "+ret);
return ret;
}
/**
* Check if service is ok with respect to publication scope.
*/
protected boolean checkPublicationScope(ServiceQuery query, IServiceIdentifier ser)
{
boolean ret = false;
ServiceScope scope = ser.getScope()!=null && !ServiceScope.DEFAULT.equals(ser.getScope())?
ser.getScope(): ServiceScope.PLATFORM;
if(ServiceScope.GLOBAL.equals(scope))
{
ret = true;
}
else if(ServiceScope.NETWORK.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.APPLICATION_GLOBAL.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.APPLICATION_NETWORK.equals(scope))
{
// todo: fixme
ret = true;
}
else if(ServiceScope.PLATFORM.equals(scope))
{
// Test if searcher and service are on same platform
ret = query.getOwner().getPlatformName().equals(ser.getProviderId().getPlatformName());
}
else if(ServiceScope.APPLICATION.equals(scope))
{
// todo: special case platform service with app scope
IComponentIdentifier sercid = ser.getProviderId();
ret = sercid.getPlatformName().equals(query.getOwner().getPlatformName())
&& getApplicationName(sercid).equals(getApplicationName(query.getOwner()));
}
else if(ServiceScope.COMPONENT.equals(scope))
{
IComponentIdentifier sercid = ser.getProviderId();
ret = getDotName(query.getOwner()).endsWith(getDotName(sercid));
}
else if(ServiceScope.COMPONENT_ONLY.equals(scope))
{
// only the component itself
ret = ser.getProviderId().equals(query.getOwner());
}
else if(ServiceScope.PARENT.equals(scope))
{
//if(query.getServiceType()!=null && query.getServiceType().toString().indexOf("Calc")!=-1)
// System.out.println("found");
// check if parent of service reaches the searcher
IComponentIdentifier sercid = ser.getProviderId();
String subname = getSubcomponentName(sercid);
String owner = getDotName(query.getOwner());
ret = owner.equals(subname) || owner.endsWith(":"+subname);
// Must include delimiter to avoid special cases like
// DistributedServicePoolAgent:MandelbrotAgent:DESKTOP-TMQFG7J_tyg
// ServicePoolAgent:MandelbrotAgent:DESKTOP-TMQFG7J_tyg
// delivering true
//System.out.println("parent check: "+subname+" "+getDotName(query.getOwner())+" "+ret);
}
return ret;
}
/**
* Get all services.
* @return The services.
*/
protected Set getServices()
{
rwlock.readLock().lock();
try
{
return indexer.getAllValues();
}
finally
{
rwlock.readLock().unlock();
}
}
/**
* Get services per query. Uses not the full query spec and
* does not check scope and filter.
* @param query The query.
* @return First matching service or null.
*/
protected Set getServices(final ServiceQuery query)
{
rwlock.readLock().lock();
try
{
Tuple2, Object> res = indexer.getValues(query.getIndexerSearchSpec());
Set ret = res==null? null: res.getFirstEntity();
//if(res!=null && res.getFirstEntity()!=null && res.getFirstEntity().size()>0 && query.getServiceType()!=null && query.getServiceType().toString().indexOf("IComponentF")!=-1)
// System.out.println("micro kernel start bug: "+res.getSecondEntity());
return ret;
}
finally
{
rwlock.readLock().unlock();
}
/*try
{
rwlock.readLock().tryLock(5, TimeUnit.SECONDS);
Set ret = indexer.getValues(query.getIndexerSearchSpec());
return ret;
}
catch(Exception e)
{
e.printStackTrace();
throw new RuntimeException(e);
}
finally
{
//System.out.println("getServices end: "+query);
rwlock.readLock().unlock();
}*/
}
/**
* Get the registry from a component.
*/
public static IServiceRegistry getRegistry(IComponentIdentifier platform)
{
return (IServiceRegistry)Starter.getPlatformValue(platform, Starter.DATA_SERVICEREGISTRY);
}
/**
* Get the registry from a component.
*/
public static IServiceRegistry getRegistry(IInternalAccess ia)
{
return getRegistry(ia.getId());
}
/**
* Get the application name. Equals the local component name in case it is a child of the platform.
* [email protected] -> awa
* @return The application name.
*/
public static String getApplicationName(IComponentIdentifier cid)
{
String ret = cid.getName();
int idx;
// If it is a direct subcomponent
if((idx = ret.lastIndexOf(':')) != -1)
{
// cut off platform name
ret = ret.substring(0, idx);
// cut off local name
if((idx = ret.indexOf('@'))!=-1)
ret = ret.substring(idx + 1);
if((idx = ret.indexOf(':'))!=-1)
ret = ret.substring(idx + 1);
}
else
{
ret = cid.getLocalName();
}
return ret;
}
/**
* Get the subcomponent name.
* @param cid The component id.
* @return The subcomponent name.
*/
public static String getSubcomponentName(IComponentIdentifier cid)
{
String ret = cid.getName();
int idx;
if((idx = ret.indexOf('@'))!=-1)
ret = ret.substring(idx + 1);
return ret;
}
/**
* Subscribe for query events.
*/
public ISubscriptionIntermediateFuture subscribeToQueries()
{
final SubscriptionIntermediateFuture fut = new SubscriptionIntermediateFuture<>();
fut.setTerminationCommand(new TerminationCommand()
{
public void terminated(Exception reason)
{
rwlock.writeLock().lock();
try
{
querysubs.remove(fut);
}
finally
{
rwlock.writeLock().unlock();
}
}
});
rwlock.writeLock().lock();
try
{
querysubs.add(fut);
}
finally
{
rwlock.writeLock().unlock();
}
Set> qs = getAllQueries();
for(ServiceQueryInfo qi : SUtil.notNull(qs))
{
QueryEvent event = new QueryEvent(qi.getQuery(), QueryEvent.QUERY_ADDED);
fut.addIntermediateResultIfUndone(event);
}
return fut;
}
/**
* Notify all listeners.
* @param fut
* @param type
*/
protected void notifyQueryListeners(QueryEvent event)
{
List> qis;
rwlock.writeLock().lock();
try
{
qis = new ArrayList<>();
qis.addAll(querysubs);
}
finally
{
rwlock.writeLock().unlock();
}
for(SubscriptionIntermediateFuture fut: qis)
{
fut.addIntermediateResultIfUndone(event);
}
}
/**
* Get the name without @ replaced by dot.
*/
public static String getDotName(IComponentIdentifier cid)
{
return cid.getName().replace('@', ':');
// return cid.getParent()==null? cid.getName(): cid.getLocalName()+":"+getSubcomponentName(cid);
}
/**
* Get the indexer.
* @return the indexer
*/
protected Indexer getIndexer()
{
return indexer;
}
}