me.prettyprint.cassandra.connection.client
Class HThriftClient

java.lang.Object
  me.prettyprint.cassandra.connection.client.HThriftClient

All Implemented Interfaces:

HClient

Direct Known Subclasses:

HKerberosThriftClient, HSaslThriftClient

public class HThriftClient
extends Object
implements HClient

Field Summary

protected org.apache.cassandra.thrift.Cassandra.Client	cassandraClient
protected String	keyspaceName
protected int	timeout
protected org.apache.thrift.transport.TTransport	transport

Constructor Summary

HThriftClient(CassandraHost cassandraHost)
Constructor

HThriftClient(CassandraHost cassandraHost, org.apache.thrift.transport.TSSLTransportFactory.TSSLTransportParameters params)
Constructor

Method Summary

void	clearAuthentication() Clears current authentication
HThriftClient	close() Close this client and its underlying connection.
boolean	equals(Object obj) Compares the toString of these clients
org.apache.cassandra.thrift.Cassandra.Client	getCassandra() Returns a new Cassandra.Client on each invocation using the underlying transport.
org.apache.cassandra.thrift.Cassandra.Client	getCassandra(String keyspaceNameArg) Returns a new Cassandra.Client on each invocation using the underlying transport.
CassandraHost	getCassandraHost() Retrieves the CassandraHost associate to this client.
long	getCreatedTime() Returns the time that this HClient was created.
long	getLastSuccessTime() Retrieves the time of the last success in milliseconds.
long	getSinceLastUsed() Retrieves the time in milliseconds since this client was used last time.
boolean	isAlreadyAuthenticated(Map<String,String> credentials) Retrieves whether client has been authenticated with the given credentials.
boolean	isOpen() Retrieves whether the underlying connection for this client is open or not.
protected org.apache.thrift.transport.TTransport	maybeWrapWithTFramedTransport(org.apache.thrift.transport.TTransport transport)
HThriftClient	open() Open a connection for this client.
void	setAuthenticated(Map<String,String> credentials) Sets authentication credentials to the client.
void	startToUse() Start tracking the beginning of use for this client.
String	toString()
void	updateLastSuccessTime() Update the time of the last success with the current time.

Methods inherited from class java.lang.Object

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

Field Detail

timeout

protected final int timeout

keyspaceName

protected String keyspaceName

transport

protected org.apache.thrift.transport.TTransport transport

cassandraClient

protected org.apache.cassandra.thrift.Cassandra.Client cassandraClient

Constructor Detail

HThriftClient

public HThriftClient(CassandraHost cassandraHost)

Constructor

Parameters:

cassandraHost -

HThriftClient

public HThriftClient(CassandraHost cassandraHost,
                     org.apache.thrift.transport.TSSLTransportFactory.TSSLTransportParameters params)

Constructor

Parameters:

cassandraHost -

params -

Method Detail

getCassandra

public org.apache.cassandra.thrift.Cassandra.Client getCassandra()

Returns a new Cassandra.Client on each invocation using the underlying transport.

Specified by:

getCassandra in interface HClient

Returns:

Cassandra.Client from the underlying transport

getCassandra

public org.apache.cassandra.thrift.Cassandra.Client getCassandra(String keyspaceNameArg)

Returns a new Cassandra.Client on each invocation using the underlying transport.

Specified by:

getCassandra in interface HClient

Parameters:

keyspaceNameArg - a keyspace

Returns:

Cassandra.Client from the underlying transport

close

public HThriftClient close()

Close this client and its underlying connection.

Specified by:

close in interface HClient

Returns:

this object

open

public HThriftClient open()

Open a connection for this client.

Specified by:

open in interface HClient

Returns:

this object

maybeWrapWithTFramedTransport

protected org.apache.thrift.transport.TTransport maybeWrapWithTFramedTransport(org.apache.thrift.transport.TTransport transport)

isOpen

public boolean isOpen()

Retrieves whether the underlying connection for this client is open or not.

Specified by:

isOpen in interface HClient

Returns:

TRUE if the underlying connection for this client is open. FALSE otherwise

startToUse

public void startToUse()

Start tracking the beginning of use for this client. This is expected to be called per operation basis. Followed by a HClient.getSinceLastUsed()

Specified by:

startToUse in interface HClient

getSinceLastUsed

public long getSinceLastUsed()

Retrieves the time in milliseconds since this client was used last time.

Specified by:

getSinceLastUsed in interface HClient

Returns:

time in milliseconds since last used.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Compares the toString of these clients

Overrides:

equals in class Object

getCassandraHost

public CassandraHost getCassandraHost()

Retrieves the CassandraHost associate to this client.

Specified by:

getCassandraHost in interface HClient

Returns:

the @link CassandraHost object for this client

isAlreadyAuthenticated

public boolean isAlreadyAuthenticated(Map<String,String> credentials)

Retrieves whether client has been authenticated with the given credentials.

Specified by:

isAlreadyAuthenticated in interface HClient

Parameters:

credentials - authentication credentials

Returns:

TRUE if the client has previously been authenticated using the credentials, FALSE otherwise (wrong credentials or not authenticated)

clearAuthentication

public void clearAuthentication()

Clears current authentication

Specified by:

clearAuthentication in interface HClient

setAuthenticated

public void setAuthenticated(Map<String,String> credentials)

Sets authentication credentials to the client.

Specified by:

setAuthenticated in interface HClient

Parameters:

credentials - credentials to be set.

getCreatedTime

public long getCreatedTime()

Returns the time that this HClient was created.

Specified by:

getCreatedTime in interface HClient

Returns:

the time this client was created

getLastSuccessTime

public long getLastSuccessTime()

Retrieves the time of the last success in milliseconds.

Specified by:

getLastSuccessTime in interface HClient

Returns:

-1 if no successful operation has already happened, or the time of the last success in milliseconds.

updateLastSuccessTime

public void updateLastSuccessTime()

Update the time of the last success with the current time.

Specified by:

updateLastSuccessTime in interface HClient