com.tangosol.internal.net.topic.impl.paged.PagedTopicConfigMap Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of coherence Show documentation
Show all versions of coherence Show documentation
Oracle Coherence Community Edition
/*
* Copyright (c) 2000, 2023, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* https://oss.oracle.com/licenses/upl.
*/
package com.tangosol.internal.net.topic.impl.paged;
import com.tangosol.internal.net.topic.impl.paged.model.PagedTopicSubscription;
import com.tangosol.internal.net.topic.impl.paged.model.SubscriberGroupId;
import com.tangosol.internal.net.topic.impl.paged.model.SubscriberId;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
/**
* A config map utility class for a {@link com.tangosol.net.PagedTopicService}.
*
* @author Jonathan Knight
* @since 22.06.4
*/
public abstract class PagedTopicConfigMap
{
/**
* Return a {@link Set} of topic names known to this config map.
*
* @return a {@link Set} of topic names known to this config map
*/
public static Set getTopicNames(Map configMap)
{
return configMap.keySet().stream()
.filter(key -> key instanceof String)
.map(String.class::cast)
.collect(Collectors.toSet());
}
/**
* Return a {@link Set} of {@link SubscriberGroupId subscriber group identifiers}
* for a specific topic known to this config map.
*
* @param sTopicName the name of the topic to get the groups for
*
* @return a {@link Set} of {@link SubscriberGroupId subscriber group identifiers}
* for a specific topic known to this config map
*/
public static Set getSubscriberGroups(Map configMap, String sTopicName)
{
return configMap.keySet().stream()
.filter(v -> v instanceof PagedTopicSubscription.Key)
.map(PagedTopicSubscription.Key.class::cast)
.filter(key -> key.getTopicName().equals(sTopicName))
.map(PagedTopicSubscription.Key::getGroupId)
.collect(Collectors.toSet());
}
/**
* Return a {@link Set} of {@link SubscriberId subscriber identifiers} for subscribers
* that sre subscribed to a specific subscriber group for a specific topic known to
* this config map.
*
* @param sTopicName the name of the topic to get the groups for
*
* @return a {@link Set} of {@link SubscriberId subscriber identifiers} for subscribers
* that sre subscribed to a specific subscriber group for a specific topic known to
* this config map
*/
public static Set getSubscribers(Map configMap, String sTopicName, SubscriberGroupId groupId)
{
PagedTopicSubscription subscription = getSubscription(configMap, sTopicName, groupId);
if (subscription != null)
{
return subscription.getSubscriberIds();
}
return Collections.emptySet();
}
/**
* Return an {@link Iterable} of {@link PagedTopicSubscription subscriptions}
* known to this config map.
*
* @return an {@link Iterable} of {@link PagedTopicSubscription subscriptions}
* known to this config map
*/
public static Iterable getSubscriptions(Map configMap)
{
return configMap.values().stream()
.filter(v -> v instanceof PagedTopicSubscription)
.map(PagedTopicSubscription.class::cast)
.collect(Collectors.toList());
}
/**
* Update this config map with the specified {@link PagedTopicSubscription subscription}.
*
* @param subscription the {@link PagedTopicSubscription subscription} to update
*/
public static void updateSubscription(Map configMap, PagedTopicSubscription subscription)
{
configMap.put(subscription.getKey(), subscription);
}
/**
* Return a {@link PagedTopicSubscription subscription}.
*
* @param lSubscriptionId the identifier of the subscription
*
* @return the {@link PagedTopicSubscription subscription} or {@code null}
* if no {@link PagedTopicSubscription subscription} exists
* for the specified identifier
*/
public static PagedTopicSubscription getSubscription(Map configMap, long lSubscriptionId)
{
return configMap.values().stream()
.filter(PagedTopicSubscription.class::isInstance)
.map(PagedTopicSubscription.class::cast)
.filter(s -> s.getSubscriptionId() == lSubscriptionId)
.findFirst()
.orElse(null);
}
/**
* Return a {@link PagedTopicSubscription subscription}.
*
* @param sTopicName the name of the topic
* @param groupId the subscriber group identifier
*
* @return the {@link PagedTopicSubscription subscription} or {@code null}
* if no {@link PagedTopicSubscription subscription} exists
* for the specified topic and subscriber group identifier
*/
public static PagedTopicSubscription getSubscription(Map configMap, String sTopicName, SubscriberGroupId groupId)
{
return (PagedTopicSubscription) configMap.get(new PagedTopicSubscription.Key(sTopicName, groupId));
}
/**
* Return a {@link PagedTopicSubscription subscription} identifier.
*
* @param sTopicName the name of the topic
* @param groupId the subscriber group identifier
*
* @return the {@link PagedTopicSubscription subscription} identifier or
* zero if no {@link PagedTopicSubscription subscription} exists
* for the specified topic and subscriber group identifier
*/
public static long getSubscriptionId(Map configMap, String sTopicName, SubscriberGroupId groupId)
{
PagedTopicSubscription subscription = getSubscription(configMap, sTopicName, groupId);
return subscription == null ? 0 : subscription.getSubscriptionId();
}
/**
* Remove a subscription from this config map.
*
* @param key the {@link PagedTopicSubscription.Key key} of the subscription to remove
*/
public static void removeSubscription(Map configMap, PagedTopicSubscription.Key key)
{
configMap.computeIfPresent(key, (k, v) -> null);
}
/**
* Returns {@code true} if the specified subscription exists with the
* specified subscriber subscribed to it.
*
* @param lSubscriptionId the subscription identifier
* @param subscriberId the subscriber identifier
*
* @return {@code true} if the specified subscription exists with the
* specified subscriber subscribed to it
*/
public static boolean hasSubscription(Map configMap, long lSubscriptionId, SubscriberId subscriberId)
{
PagedTopicSubscription subscription = getSubscription(configMap, lSubscriptionId);
if (subscription != null)
{
return subscriberId == null
|| subscription.hasSubscriber(subscriberId);
}
return false;
}
/**
* Remove configurations for the specified topic name.
*
* @param sTopicName the name of the topic to remove
*/
public static void removeTopic(Map configMap, String sTopicName)
{
// remove the topic entry
configMap.remove(sTopicName);
// remove all the subscriptions for the topic
Set setKeys = configMap.keySet().stream()
.filter(v -> v instanceof PagedTopicSubscription.Key)
.map(PagedTopicSubscription.Key.class::cast)
.filter(key -> key.getTopicName().equals(sTopicName))
.collect(Collectors.toSet());
setKeys.forEach(configMap::remove);
}
}