Package org.infinispan.persistence.manager

Class PersistenceManagerImpl

    • Constructor Detail

      • PersistenceManagerImpl

        public PersistenceManagerImpl()

    • Method Detail

      • start

        public void start()
        Specified by:
        start in interface org.infinispan.commons.api.Lifecycle

      • pollStoreAvailability

        protected CompletionStage<Void> pollStoreAvailability()
        Polls the availability of all configured stores. If a store is found to be unavailable all future requests to this manager will encounter an StoreUnavailableException. Note that this method should only have one availability check running at a time. This is currently guaranteed as it is using a non overlapping scheduler.
        Returns:
        stage that signals that all store availability checks are done

      • stop

        public void stop()
        Specified by:
        stop in interface org.infinispan.commons.api.Lifecycle

      • isPreloaded

        public boolean isPreloaded()
        Specified by:
        isPreloaded in interface PersistenceManager
        Returns:
        true if all entries from the store have been inserted to the cache. If the persistence/preload is disabled or eviction limit was reached when preloading, returns false.

      • publishEntries

        public <K,​V> org.reactivestreams.Publisher<MarshallableEntry<K,​V>> publishEntries​(Predicate<? super K> filter,
                                                                                              boolean fetchValue,
                                                                                              boolean fetchMetadata,
                                                                                              Predicate<? super StoreConfiguration> predicate)
        Description copied from interface: PersistenceManager
        Returns a publisher that will publish all entries stored by the underlying cache store. Only the first cache store that implements AdvancedCacheLoader will be used. Predicate is applied by the underlying loader in a best attempt to improve performance.

        Caller can tell the store to also fetch the value or metadata. In some cases this can improve performance. If metadata is not fetched the publisher may include expired entries.

        Specified by:
        publishEntries in interface PersistenceManager
        Type Parameters:
        K - key type
        V - value type
        Parameters:
        filter - filter so that only entries whose key matches are returned
        fetchValue - whether to fetch value or not
        fetchMetadata - whether to fetch metadata or not
        predicate - whether a store can be used by publish entries
        Returns:
        publisher that will publish entries

      • publishEntries

        public <K,​V> org.reactivestreams.Publisher<MarshallableEntry<K,​V>> publishEntries​(org.infinispan.commons.util.IntSet segments,
                                                                                              Predicate<? super K> filter,
                                                                                              boolean fetchValue,
                                                                                              boolean fetchMetadata,
                                                                                              Predicate<? super StoreConfiguration> predicate)
        Description copied from interface: PersistenceManager
        Returns a publisher that will publish entries that map to the provided segments. It will attempt to find the first segmented store if one is available. If not it will fall back to the first non segmented store and filter out entries that don't map to the provided segment.
        Specified by:
        publishEntries in interface PersistenceManager
        Type Parameters:
        K - key type
        V - value type
        Parameters:
        segments - only entries that map to these segments are processed
        filter - filter so that only entries whose key matches are returned
        fetchValue - whether to fetch value or not
        fetchMetadata - whether to fetch metadata or not
        predicate - whether a store can be used by publish entries
        Returns:
        publisher that will publish entries belonging to the given segments

      • publishKeys

        public <K> org.reactivestreams.Publisher<K> publishKeys​(Predicate<? super K> filter,
                                                        Predicate<? super StoreConfiguration> predicate)
        Description copied from interface: PersistenceManager
        Returns a publisher that will publish all keys stored by the underlying cache store. Only the first cache store that implements AdvancedCacheLoader will be used. Predicate is applied by the underlying loader in a best attempt to improve performance.

        This method should be preferred over PersistenceManager.publishEntries(Predicate, boolean, boolean, Predicate) when only keys are desired as many stores can do this in a significantly more performant way.

        This publisher will never return a key which belongs to an expired entry

        Specified by:
        publishKeys in interface PersistenceManager
        Type Parameters:
        K - key type
        Parameters:
        filter - filter so that only keys which match are returned
        predicate - access mode to choose what type of loader to use
        Returns:
        publisher that will publish keys

      • publishKeys

        public <K> org.reactivestreams.Publisher<K> publishKeys​(org.infinispan.commons.util.IntSet segments,
                                                        Predicate<? super K> filter,
                                                        Predicate<? super StoreConfiguration> predicate)
        Description copied from interface: PersistenceManager
        Returns a publisher that will publish keys that map to the provided segments. It will attempt to find the first segmented store if one is available. If not it will fall back to the first non segmented store and filter out entries that don't map to the provided segment.

        This method should be preferred over PersistenceManager.publishEntries(IntSet, Predicate, boolean, boolean, Predicate) when only keys are desired as many stores can do this in a significantly more performant way.

        This publisher will never return a key which belongs to an expired entry

        Specified by:
        publishKeys in interface PersistenceManager
        Type Parameters:
        K - key type
        Parameters:
        segments - only keys that map to these segments are processed
        filter - filter so that only keys which match are returned
        predicate - access mode to choose what type of loader to use
        Returns:
        publisher that will publish keys belonging to the given segments

      • loadFromAllStores

        public <K,​V> CompletionStage<MarshallableEntry<K,​V>> loadFromAllStores​(Object key,
                                                                                   boolean localInvocation,
                                                                                   boolean includeStores)
        Description copied from interface: PersistenceManager
        Loads an entry from the persistence store for the given key. The returned value may be null. This value is guaranteed to not be expired when it was returned.
        Specified by:
        loadFromAllStores in interface PersistenceManager
        Parameters:
        key - key to read the entry from
        localInvocation - whether this invocation is a local invocation. Some loaders may be ignored if it is not local
        includeStores - if a loader that is also a store can be loaded from
        Returns:
        entry that maps to the key

      • size

        public CompletionStage<Long> size​(Predicate<? super StoreConfiguration> predicate)
        Description copied from interface: PersistenceManager
        Returns the count of how many entries are persisted. If no store can handle the request for the given mode a value of -1 is returned instead.
        Specified by:
        size in interface PersistenceManager
        Parameters:
        predicate - whether a loader can be used
        Returns:
        size or -1 if size couldn't be computed

      • size

        public CompletionStage<Long> size​(org.infinispan.commons.util.IntSet segments)
        Description copied from interface: PersistenceManager
        Returns the count of how many entries are persisted within the given segments. The returned value will always be 0 or greater.
        Specified by:
        size in interface PersistenceManager
        Parameters:
        segments - which segments to count entries from
        Returns:
        how many entries are in the store which map to the given segments

      • isAvailable

        public boolean isAvailable()
        Specified by:
        isAvailable in interface PersistenceManager
        Returns:
        true if all configured stores are available and ready for read/write operations.

      • addSegments

        public CompletionStage<Boolean> addSegments​(org.infinispan.commons.util.IntSet segments)
        Description copied from interface: PersistenceManager
        Notifies any underlying segmented stores that the segments provided are owned by this cache and to start/configure any underlying resources required to handle requests for entries on the given segments.

        This only affects stores that are not shared as shared stores have to keep all segments running at all times

        This method returns true if all stores were able to handle the added segments. That is that either there are no stores or that all the configured stores are segmented. Note that configured loaders do not affect the return value.

        Specified by:
        addSegments in interface PersistenceManager
        Parameters:
        segments - segments this cache owns
        Returns:
        false if a configured store couldn't configure newly added segments

      • removeSegments

        public CompletionStage<Boolean> removeSegments​(org.infinispan.commons.util.IntSet segments)
        Description copied from interface: PersistenceManager
        Notifies any underlying segmented stores that a given segment is no longer owned by this cache and allowing it to remove the given segments and release resources related to it.

        This only affects stores that are not shared as shared stores have to keep all segments running at all times

        This method returns true if all stores were able to handle the removed segments. That is that either there are no stores or that all the configured stores are segmented. Note that configured loaders do not affect the return value.

        Specified by:
        removeSegments in interface PersistenceManager
        Parameters:
        segments - segments this cache no longer owns
        Returns:
        false if a configured store couldn't remove configured segments