com.tangosol.coherence.config.ServiceSchemeRegistry Maven / Gradle / Ivy
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/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
package com.tangosol.coherence.config;
import com.tangosol.coherence.config.scheme.Scheme;
import com.tangosol.coherence.config.scheme.ServiceScheme;
import com.tangosol.util.UUID;
import java.util.Iterator;
import java.util.LinkedHashMap;
/**
* A {@link ServiceSchemeRegistry} provides a mechanism manage a collection
* of {@link ServiceScheme}s together with the ability to search the registry for
* said {@link ServiceScheme}s, either by name or service name.
*
* {@link ServiceSchemeRegistry}s are {@link Iterable}, the order of iteration
* being the order in which the {@link ServiceScheme}s where added to the said
* {@link ServiceSchemeRegistry}.
*
* @author bo 2012.05.02
* @since Coherence 12.1.2
*/
public class ServiceSchemeRegistry
implements Iterable
{
// ----- constructors ---------------------------------------------------
/**
* Constructs a {@link ServiceSchemeRegistry}.
*/
public ServiceSchemeRegistry()
{
m_mapServiceSchemesBySchemeName = new LinkedHashMap();
}
// ----- Iterable interface ---------------------------------------------
/**
* {@inheritDoc}
*/
@Override
public Iterator iterator()
{
return m_mapServiceSchemesBySchemeName.values().iterator();
}
// ----- SchemeRegistry methods -----------------------------------------
/**
* Attempts to register the specified {@link ServiceScheme}.
*
* @param scheme the {@link ServiceScheme} to register
*
* @throws IllegalArgumentException if a {@link ServiceScheme} with the same
* scheme and/or service name has already
* been registered
*/
public void register(ServiceScheme scheme)
{
if (scheme.isAnonymous())
{
// ensure that there is no other scheme with the same service name
ServiceScheme schemeOther = findSchemeByServiceName(scheme.getServiceName());
if (schemeOther != null)
{
throw new IllegalArgumentException(String.format(
"Attempted to register an anonymous service scheme with a %s that is already defined.",
scheme.getSchemeName()));
}
else
{
// register the scheme with an anonymous name. no one will ever
// try to look this up, but it needs a scheme name in the registry
m_mapServiceSchemesBySchemeName.put("anonymous-" + scheme.getServiceName() + "-" + new UUID(), scheme);
}
}
else if (m_mapServiceSchemesBySchemeName.containsKey(scheme.getSchemeName()))
{
throw new IllegalArgumentException(String.format(
"Attempted to register or redefine a service scheme called %s that already exists with %s",
scheme.getSchemeName(), scheme.toString()));
}
else
{
m_mapServiceSchemesBySchemeName.put(scheme.getSchemeName(), scheme);
}
}
/**
* Attempts to locate a {@link ServiceScheme} registered with the specified
* {@link ServiceScheme#getSchemeName()}.
*
* @param sSchemeName the scheme of the {@link ServiceScheme} to find
*
* @return the registered {@link ServiceScheme} or
* null if not registered
*/
public ServiceScheme findSchemeBySchemeName(String sSchemeName)
{
return m_mapServiceSchemesBySchemeName.get(sSchemeName);
}
/**
* Attempts to locate a {@link ServiceScheme} registered with the specified
* {@link ServiceScheme#getServiceName()} giving preference to "autostart"
* schemes.
*
* @param sServiceName the service name of {@link ServiceScheme} to find
*
* @return the registered {@link ServiceScheme} or
* null if not registered
*/
public ServiceScheme findSchemeByServiceName(String sServiceName)
{
ServiceScheme schemeMatch = null;
for (ServiceScheme scheme : this)
{
if (scheme.getServiceName().equals(sServiceName))
{
if (scheme.isAutoStart()) // see COH-15292
{
return scheme;
}
schemeMatch = scheme;
}
}
return schemeMatch;
}
/**
* Determines the number of {@link Scheme}s registered with the
* {@link ServiceSchemeRegistry}.
*
* @return the number of {@link Scheme}s
*/
public int size()
{
return m_mapServiceSchemesBySchemeName.size();
}
// ----- data members ---------------------------------------------------
/**
* The map of {@link ServiceScheme}s keyed by {@link ServiceScheme#getSchemeName()}.
*/
private LinkedHashMap m_mapServiceSchemesBySchemeName;
}