co.cask.tephra.distributed

Class AbstractClientProvider

java.lang.Object

co.cask.tephra.distributed.AbstractClientProvider

All Implemented Interfaces:

ThriftClientProvider

Direct Known Subclasses:

PooledClientProvider, SingleUseClientProvider, ThreadLocalClientProvider

public abstract class AbstractClientProvider
extends Object
implements ThriftClientProvider

An abstract tx client provider that implements common functionality.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	AbstractClientProvider.EndpointStrategy This class helps picking up an endpoint from a list of Discoverable.
class	AbstractClientProvider.RandomEndpointStrategy Randomly picks endpoint from the list of available endpoints.
class	AbstractClientProvider.TimeLimitEndpointStrategy An AbstractClientProvider.EndpointStrategy that make sure it picks an endpoint within the given timeout limit.

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicBoolean	initialized

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractClientProvider(org.apache.hadoop.conf.Configuration configuration, org.apache.twill.discovery.DiscoveryServiceClient discoveryServiceClient)

Method Summary

Methods

Modifier and Type	Method and Description
void	initialize() Initialize the provider.
protected TransactionServiceThriftClient	newClient()
protected TransactionServiceThriftClient	newClient(int timeout)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface co.cask.tephra.distributed.ThriftClientProvider

discardClient, getClient, returnClient

Field Detail

initialized

protected final AtomicBoolean initialized

Constructor Detail

AbstractClientProvider

protected AbstractClientProvider(org.apache.hadoop.conf.Configuration configuration,
                      org.apache.twill.discovery.DiscoveryServiceClient discoveryServiceClient)

Method Detail

initialize

public void initialize()
                throws org.apache.thrift.TException

Description copied from interface: ThriftClientProvider

Initialize the provider. At this point, it should be verified that tx service is up and running and getClient() can create new clients when necessary.

Specified by:

initialize in interface ThriftClientProvider

Throws:

org.apache.thrift.TException

newClient

protected TransactionServiceThriftClient newClient()
                                            throws org.apache.thrift.TException

Throws:

org.apache.thrift.TException

newClient

protected TransactionServiceThriftClient newClient(int timeout)
                                            throws org.apache.thrift.TException

Throws:

org.apache.thrift.TException