com.rabbitmq.client
Interface Connection

All Known Implementing Classes:

AMQConnection

public interface Connection

Public API: Interface to an AMQ connection. See the see the spec for details.

To connect to a broker, fill in a ConnectionParameters and use a ConnectionFactory as follows:

 ConnectionParameters params = new ConnectionParameters();
 params.setUsername(userName);
 params.setPassword(password);
 params.setVirtualHost(virtualHost);
 params.setRequestedHeartbeat(0);
 ConnectionFactory factory = new ConnectionFactory(params);
 Connection conn = factory.newConnection(hostName, AMQP.PROTOCOL.PORT);

 // Then open a channel and retrieve an access ticket:
 
 Channel channel = conn.createChannel();
 int ticket = channel.accessRequest(realmName);
 

Current implementations are thread-safe for code at the client API level, and in fact thread-safe internally except for code within RPC calls.

Method Summary

void	close(int closeCode, java.lang.String closeMessage) Close this connection with the given code and message.
Channel	createChannel() Create a new channel, using an internally allocated channel number.
Channel	createChannel(int channelNumber) Create a new channel, using the specified channel number if possible.
int	getChannelMax() Get the negotiated maximum number of channels allowed.
int	getFrameMax() Get the negotiated maximum frame size.
int	getHeartbeat() Get the negotiated heartbeat interval.
java.lang.String	getHost() Retrieve the host.
Address[]	getKnownHosts() Retrieve the known hosts.
ConnectionParameters	getParameters() Retrieve the connection parameters.
int	getPort() Retrieve the port number.

Method Detail

getHost

java.lang.String getHost()

Retrieve the host.

Returns:

the hostname of the peer we're connected to.

getPort

int getPort()

Retrieve the port number.

Returns:

the port number of the peer we're connected to.

getParameters

ConnectionParameters getParameters()

Retrieve the connection parameters.

Returns:

the initialization parameters used to open this connection.

getChannelMax

int getChannelMax()

Get the negotiated maximum number of channels allowed. Note that this is the current setting, as opposed to the initially-requested setting available from getParameters().ConnectionParameters.getRequestedChannelMax().

Returns:

the maximum number of simultaneously-open channels permitted for this connection.

getFrameMax

int getFrameMax()

Get the negotiated maximum frame size. Note that this is the current setting, as opposed to the initially-requested setting available from getParameters().ConnectionParameters.getRequestedFrameMax().

Returns:

the maximum frame size, in octets; zero if unlimited

getHeartbeat

int getHeartbeat()

Get the negotiated heartbeat interval. Note that this is the current setting, as opposed to the initially-requested setting available from getParameters().ConnectionParameters.getRequestedHeartbeat().

Returns:

the heartbeat interval, in seconds; zero if none

getKnownHosts

Address[] getKnownHosts()

Retrieve the known hosts.

Returns:

an array of addresses for all hosts that came back in the initial AMQP.Connection.OpenOk open-ok method

createChannel

Channel createChannel()
                      throws java.io.IOException

Create a new channel, using an internally allocated channel number.

Returns:

a new channel descriptor, or null if none is available

Throws:

java.io.IOException - if an I/O problem is encountered

createChannel

Channel createChannel(int channelNumber)
                      throws java.io.IOException

Create a new channel, using the specified channel number if possible.

Parameters:

channelNumber - the channel number to allocate

Returns:

a new channel descriptor, or null if this channel number is already in use

Throws:

java.io.IOException - if an I/O problem is encountered

close

void close(int closeCode,
           java.lang.String closeMessage)
           throws java.io.IOException

Close this connection with the given code and message.

Parameters:

closeCode - code indicating the reason for closing the connection - see AMQP spec for a list of codes

closeMessage - optional message describing the reason for closing the connection

Throws:

java.io.IOException - if an I/O problem is encountered