com.tangosol.internal.net.topic.impl.paged.PagedTopicConfigMap Maven / Gradle / Ivy
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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.HashSet;
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 new HashSet<>(subscription.getSubscribers().values());
}
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);
}
}