Package org.apache.geode.cache

Class CacheFactory

  • java.lang.Object
    • org.apache.geode.cache.CacheFactory
  • public class CacheFactory
extends java.lang.Object
    Factory class used to create the singleton cache and connect to the GemFire singleton distributed system. If the application wants to connect to GemFire as a client it should use ClientCacheFactory instead.

    Once the factory has been configured using its set(String, String) method you produce a Cache by calling the create() method.

    To get the existing unclosed singleton cache instance call getAnyInstance().

    If an instance of DistributedSystem already exists when this factory creates a cache, that instance will be used if it is compatible with this factory.

    The following examples illustrate bootstrapping the cache using region shortcuts:

    Example 1: Create a cache and a replicate region named customers. 

     Cache c = new CacheFactory().create();
 Region r = c.createRegionFactory(REPLICATE).create("customers");
    Example 2: Create a cache and a partition region with redundancy 
     Cache c = new CacheFactory().create();
 Region r = c.createRegionFactory(PARTITION_REDUNDANT).create("customers");
    Example 3: Construct the cache region declaratively in cache.xml 
      <!DOCTYPE cache PUBLIC
    "-//GemStone Systems, Inc.//GemFire Declarative Caching 8.0//EN"
    "http://www.gemstone.com/dtd/cache8_0.dtd">
  <cache>
    <region name="myRegion" refid="REPLICATE"/>
      <!-- you can override or add to the REPLICATE attributes by adding
           a region-attributes sub element here -->
  </cache>
    Now, create the cache telling it to read your cache.xml file: 
     Cache c = new CacheFactory().set("cache-xml-file", "myCache.xml").create();
 Region r = c.getRegion("myRegion");

    For a complete list of all region shortcuts see RegionShortcut. Applications that need to explicitly control the individual region attributes can do this declaratively in XML or using APIs.

    Since:
    GemFire 3.0

    • Constructor Detail

      • CacheFactory

        public CacheFactory()
        Creates a default cache factory.
        Since:
        GemFire 6.5

      • CacheFactory

        public CacheFactory​(java.util.Properties props)
        Create a CacheFactory initialized with the given gemfire properties. For a list of valid GemFire properties and their meanings see ConfigurationProperties.
        Parameters:
        props - the gemfire properties to initialize the factory with.
        Since:
        GemFire 6.5

    • Method Detail

      • create

        public Cache create()
             throws TimeoutException,
                    CacheWriterException,
                    GatewayException,
                    RegionExistsException
        Creates a new cache that uses the configured distributed system. If a connected distributed system already exists it will be used if it is compatible with the properties on this factory. Otherwise a a distributed system will be created with the configured properties. If a cache already exists it will be returned.

        If the cache does need to be created it will also be initialized from cache.xml if it exists.

        Returns:
        the created or already existing singleton cache
        Throws:
        CacheXmlException - If a problem occurs while parsing the declarative caching XML file.
        TimeoutException - If a Region.put(Object, Object) times out while initializing the cache.
        CacheWriterException - If a CacheWriterException is thrown while initializing the cache.
        GatewayException - If a GatewayException is thrown while initializing the cache.
        RegionExistsException - If the declarative caching XML file describes a region that already exists (including the root region).
        java.lang.IllegalStateException - if cache already exists and is not compatible with the new configuration.
        AuthenticationFailedException - if authentication fails.
        AuthenticationRequiredException - if the distributed system is in secure mode and this new member is not configured with security credentials.
        Since:
        GemFire 6.5

      • set

        public CacheFactory set​(java.lang.String name,
                        java.lang.String value)
        Sets a gemfire property that will be used when creating the Cache. For a list of valid GemFire properties and their meanings see ConfigurationProperties.
        Parameters:
        name - the name of the gemfire property
        value - the value of the gemfire property
        Returns:
        a reference to this CacheFactory object
        Since:
        GemFire 6.5

      • setPdxReadSerialized

        public CacheFactory setPdxReadSerialized​(boolean readSerialized)
        Sets the object preference to PdxInstance type. When a cached object that was serialized as a PDX is read from the cache a PdxInstance will be returned instead of the actual domain class. The PdxInstance is an interface that provides run time access to the fields of a PDX without deserializing the entire PDX. The PdxInstance implementation is a light weight wrapper that simply refers to the raw bytes of the PDX that are kept in the cache. Using this method applications can choose to access PdxInstance instead of Java object.

        Note that a PdxInstance is only returned if a serialized PDX is found in the cache. If the cache contains a deserialized PDX, then a domain class instance is returned instead of a PdxInstance.

        Parameters:
        readSerialized - true to prefer PdxInstance
        Returns:
        this CacheFactory
        Since:
        GemFire 6.6
        See Also:
        PdxInstance

      • setSecurityManager

        public CacheFactory setSecurityManager​(SecurityManager securityManager)
        Sets the securityManager for the cache. If this securityManager is set, it will override the security-manager property you set in your gemfire system properties. This is provided mostly for container to inject an already initialized securityManager. An object provided this way is expected to be initialized already. We are not calling the init method on this object
        Parameters:
        securityManager - the securityManager for the cache
        Returns:
        this CacheFactory

      • setPostProcessor

        public CacheFactory setPostProcessor​(PostProcessor postProcessor)
        Sets the postProcessor for the cache. If this postProcessor is set, it will override the security-post-processor setting in the gemfire system properties. This is provided mostly for container to inject an already initialized post processor. An object provided this way is expected to be initialized already. We are not calling the init method on this object
        Parameters:
        postProcessor - the postProcessor for the cache
        Returns:
        this CacheFactory

      • setPdxSerializer

        public CacheFactory setPdxSerializer​(PdxSerializer serializer)
        Set the PDX serializer for the cache. If this serializer is set, it will be consulted to see if it can serialize any domain classes which are added to the cache in portable data exchange format.
        Parameters:
        serializer - the serializer to use
        Returns:
        this CacheFactory
        Since:
        GemFire 6.6
        See Also:
        PdxSerializer

      • setPdxDiskStore

        public CacheFactory setPdxDiskStore​(java.lang.String diskStoreName)
        Set the disk store that is used for PDX meta data. When serializing objects in the PDX format, the type definitions are persisted to disk. This setting controls which disk store is used for that persistence. If not set, the metadata will go in the default disk store.
        Parameters:
        diskStoreName - the name of the disk store to use for the PDX metadata.
        Returns:
        this CacheFactory
        Since:
        GemFire 6.6

      • setPdxPersistent

        public CacheFactory setPdxPersistent​(boolean isPersistent)
        Control whether the type metadata for PDX objects is persisted to disk. The default for this setting is false. If you are using persistent regions with PDX then you must set this to true. If you are using a GatewaySender or AsyncEventQueue with PDX then you should set this to true.
        Parameters:
        isPersistent - true if the metadata should be persistent
        Returns:
        this CacheFactory
        Since:
        GemFire 6.6

      • setPdxIgnoreUnreadFields

        public CacheFactory setPdxIgnoreUnreadFields​(boolean ignore)
        Control whether pdx ignores fields that were unread during deserialization. The default is to preserve unread fields be including their data during serialization. But if you configure the cache to ignore unread fields then their data will be lost during serialization.

        You should only set this attribute to true if you know this member will only be reading cache data. In this use case you do not need to pay the cost of preserving the unread fields since you will never be reserializing pdx data.

        Parameters:
        ignore - true if fields not read during pdx deserialization should be ignored; false, the default, if they should be preserved.
        Returns:
        this CacheFactory
        Since:
        GemFire 6.6

      • addMeterSubregistry

        @Experimental("Micrometer metrics is a new addition to Geode and the API may change")
public CacheFactory addMeterSubregistry​(io.micrometer.core.instrument.MeterRegistry subregistry)
        Adds the given meter registry to the cache's composite registry for publishing cache metrics to external monitoring systems.

        Example adding a meter sub-registry: 

         MeterRegistry prometheusRegistry = new PrometheusMeterRegistry(...);

 Cache cache = new CacheFactory()
     .addMeterSubregistry(prometheusRegistry)
     .create();

        Example adding multiple meter sub-registries: 

         MeterRegistry prometheusRegistry = new PrometheusMeterRegistry(...);
 MeterRegistry influxRegistry = new InfluxMeterRegistry(...);
 MeterRegistry newRelicRegistry = new NewRelicMeterRegistry(...);

 Cache cache = new CacheFactory()
     .addMeterSubregistry(prometheusRegistry)
     .addMeterSubregistry(influxRegistry)
     .addMeterSubregistry(newRelicRegistry)
     .create();

        Experimental: Micrometer metrics is a new addition to Geode and the API may change.

        Parameters:
        subregistry - the registry to add
        Returns:
        this CacheFactory
        See Also:
        Micrometer Documentation, Micrometer Concepts

      • getInstance

        public static Cache getInstance​(DistributedSystem system)
        Gets the instance of Cache produced by an earlier call to create().
        Parameters:
        system - the DistributedSystem the cache was created with.
        Returns:
        the Cache associated with the specified system.
        Throws:
        CacheClosedException - if a cache has not been created or the created one is closed

      • getInstanceCloseOk

        public static Cache getInstanceCloseOk​(DistributedSystem system)
        Gets the instance of Cache produced by an earlier call to create() even if it has been closed.
        Parameters:
        system - the DistributedSystem the cache was created with.
        Returns:
        the Cache associated with the specified system.
        Throws:
        CacheClosedException - if a cache has not been created
        Since:
        GemFire 3.5

      • getAnyInstance

        public static Cache getAnyInstance()
        Gets an arbitrary open instance of Cache produced by an earlier call to create().

        WARNING: To avoid risk of deadlock, do not invoke getAnyInstance() from within any CacheCallback including CacheListener, CacheLoader, CacheWriter, TransactionListener, TransactionWriter. Instead use EntryEvent.getRegion().getCache(), RegionEvent.getRegion().getCache(), LoaderHelper.getRegion().getCache(), or TransactionEvent.getCache().

        Returns:
        arbitrary open instance of Cache produced by an earlier call to create()
        Throws:
        CacheClosedException - if a cache has not been created or the only created one is closed

      • getVersion

        public static java.lang.String getVersion()
        Returns the version of the cache implementation.
        Returns:
        the version of the cache implementation as a String