voldemort.store.stats
Class StatTrackingStore

java.lang.Object
  extended by voldemort.store.AbstractStore<K,V,T>
      extended by voldemort.store.DelegatingStore<ByteArray,byte[],byte[]>
          extended by voldemort.store.stats.StatTrackingStore
All Implemented Interfaces:
Store<ByteArray,byte[],byte[]>

public class StatTrackingStore
extends DelegatingStore<ByteArray,byte[],byte[]>

A store wrapper that tracks basic usage statistics


Constructor Summary
StatTrackingStore(Store<ByteArray,byte[],byte[]> innerStore, StoreStats parentStats)
           
 
Method Summary
 boolean delete(ByteArray key, Version version)
          Delete all entries prior to the given version
 boolean delete(CompositeVoldemortRequest<ByteArray,byte[]> request)
          Delete all entries prior to the given version
 java.util.List<Versioned<byte[]>> get(ByteArray key, byte[] transforms)
          Get the value associated with the given key
 java.util.List<Versioned<byte[]>> get(CompositeVoldemortRequest<ByteArray,byte[]> request)
          Get the value associated with the given key
 java.util.Map<ByteArray,java.util.List<Versioned<byte[]>>> getAll(CompositeVoldemortRequest<ByteArray,byte[]> request)
          Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values.
 java.util.Map<ByteArray,java.util.List<Versioned<byte[]>>> getAll(java.lang.Iterable<ByteArray> keys, java.util.Map<ByteArray,byte[]> transforms)
          Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values.
 java.lang.Object getCapability(StoreCapabilityType capability)
          Get some capability of the store.
 StoreStats getStats()
           
 void put(ByteArray key, Versioned<byte[]> value, byte[] transforms)
          Associate the value with the key and version in this store
 void put(CompositeVoldemortRequest<ByteArray,byte[]> request)
          Associate the value with the key and version in this store
 void resetStatistics()
           
 
Methods inherited from class voldemort.store.DelegatingStore
close, getInnerStore, getVersions, toString
 
Methods inherited from class voldemort.store.AbstractStore
getName
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

StatTrackingStore

public StatTrackingStore(Store<ByteArray,byte[],byte[]> innerStore,
                         StoreStats parentStats)
Method Detail

delete

public boolean delete(ByteArray key,
                      Version version)
               throws VoldemortException
Description copied from interface: Store
Delete all entries prior to the given version

Specified by:
delete in interface Store<ByteArray,byte[],byte[]>
Overrides:
delete in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
key - The key to delete
version - The current value of the key
Returns:
True if anything was deleted
Throws:
VoldemortException

get

public java.util.List<Versioned<byte[]>> get(ByteArray key,
                                             byte[] transforms)
                                      throws VoldemortException
Description copied from interface: Store
Get the value associated with the given key

Specified by:
get in interface Store<ByteArray,byte[],byte[]>
Overrides:
get in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
key - The key to check for
Returns:
The value associated with the key or an empty list if no values are found.
Throws:
VoldemortException

getAll

public java.util.Map<ByteArray,java.util.List<Versioned<byte[]>>> getAll(java.lang.Iterable<ByteArray> keys,
                                                                         java.util.Map<ByteArray,byte[]> transforms)
                                                                  throws VoldemortException
Description copied from interface: Store
Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values. Note that the returned map will only contain entries for the keys which have a value associated with them.

Specified by:
getAll in interface Store<ByteArray,byte[],byte[]>
Overrides:
getAll in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
keys - The keys to check for.
Returns:
A Map of keys to a list of versioned values.
Throws:
VoldemortException

put

public void put(ByteArray key,
                Versioned<byte[]> value,
                byte[] transforms)
         throws VoldemortException
Description copied from interface: Store
Associate the value with the key and version in this store

Specified by:
put in interface Store<ByteArray,byte[],byte[]>
Overrides:
put in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
key - The key to use
value - The value to store and its version.
Throws:
VoldemortException

getCapability

public java.lang.Object getCapability(StoreCapabilityType capability)
Description copied from interface: Store
Get some capability of the store. Examples would be the serializer used, or the routing strategy. This provides a mechanism to verify that the store hierarchy has some set of capabilities without knowing the precise layering.

Specified by:
getCapability in interface Store<ByteArray,byte[],byte[]>
Overrides:
getCapability in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
capability - The capability type to retrieve
Returns:
The given capaiblity

getStats

public StoreStats getStats()

resetStatistics

public void resetStatistics()

get

public java.util.List<Versioned<byte[]>> get(CompositeVoldemortRequest<ByteArray,byte[]> request)
                                      throws VoldemortException
Description copied from interface: Store
Get the value associated with the given key

Specified by:
get in interface Store<ByteArray,byte[],byte[]>
Overrides:
get in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
request - Contains the key to check for and associated transforms
Returns:
The value associated with the key or an empty list if no values are found.
Throws:
VoldemortException

getAll

public java.util.Map<ByteArray,java.util.List<Versioned<byte[]>>> getAll(CompositeVoldemortRequest<ByteArray,byte[]> request)
                                                                  throws VoldemortException
Description copied from interface: Store
Get the values associated with the given keys and returns them in a Map of keys to a list of versioned values. Note that the returned map will only contain entries for the keys which have a value associated with them.

Specified by:
getAll in interface Store<ByteArray,byte[],byte[]>
Overrides:
getAll in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
request - Contains the keys to check for.
Returns:
A Map of keys to a list of versioned values.
Throws:
VoldemortException

put

public void put(CompositeVoldemortRequest<ByteArray,byte[]> request)
         throws VoldemortException
Description copied from interface: Store
Associate the value with the key and version in this store

Specified by:
put in interface Store<ByteArray,byte[],byte[]>
Overrides:
put in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
request - Contains the key to use along with the value and version to use.
Throws:
VoldemortException

delete

public boolean delete(CompositeVoldemortRequest<ByteArray,byte[]> request)
               throws VoldemortException
Description copied from interface: Store
Delete all entries prior to the given version

Specified by:
delete in interface Store<ByteArray,byte[],byte[]>
Overrides:
delete in class DelegatingStore<ByteArray,byte[],byte[]>
Parameters:
request - Contains the key to delete and current version of the key
Returns:
True if anything was deleted
Throws:
VoldemortException


Jay Kreps, Roshan Sumbaly, Alex Feinberg, Bhupesh Bansal, Lei Gao, Chinmay Soman, Vinoth Chandar, Zhongjie Wu