Package com.rabbitmq.client.impl
Class AMQConnection
- java.lang.Object
-
- com.rabbitmq.client.impl.ShutdownNotifierComponent
-
- com.rabbitmq.client.impl.AMQConnection
-
- All Implemented Interfaces:
Connection,NetworkConnection,ShutdownNotifier,Closeable,AutoCloseable
- Direct Known Subclasses:
RecoveryAwareAMQConnection
public class AMQConnection extends ShutdownNotifierComponent implements Connection, NetworkConnection
Concrete class representing and managing an AMQP connection to a broker.To create a broker connection, use
ConnectionFactory. SeeConnectionfor an example.
-
-
Field Summary
Fields Modifier and Type Field Description protected ConsumerWorkService_workServicestatic doubleCHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIERprotected MetricsCollectormetricsCollector
-
Constructor Summary
Constructors Constructor Description AMQConnection(ConnectionParams params, FrameHandler frameHandler)AMQConnection(ConnectionParams params, FrameHandler frameHandler, MetricsCollector metricsCollector)Construct a new connection
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description voidabort()Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'.voidabort(int timeout)Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'.voidabort(int closeCode, String closeMessage)Public API - Abort this connection and all its channels.voidabort(int closeCode, String closeMessage, int timeout)Public API - Abort this connection and all its channels.voidaddBlockedListener(BlockedListener listener)Add aBlockedListener.voidaddRecoveryCanBeginListener(RecoveryCanBeginListener fn)voidclearBlockedListeners()Remove allBlockedListeners.voidclose()Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'.voidclose(int timeout)Public API - Close this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'.voidclose(int closeCode, String closeMessage)Public API - Close this connection and all its channels.voidclose(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause)Protected API - Delegates tothe six-argument close method, passing -1 for the timeout, and false for the abort flag.voidclose(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause, int timeout, boolean abort)Protected API - Close this connection with the given code, message, source and timeout value for all the close operations to complete.voidclose(int closeCode, String closeMessage, int timeout)Public API - Close this connection and all its channels.protected voidconfigureChannelManager(ChannelManager channelManager)ChannelcreateChannel()Public API - Create a new channel, using an internally allocated channel number.ChannelcreateChannel(int channelNumber)Public API - Create a new channel, using the specified channel number if possible.static Map<String,Object>defaultClientProperties()Retrieve a copy of the default table of client properties that will be sent to the server during connection startup.voiddisconnectChannel(ChannelN channel)Protected API - respond, in the driver thread, to a ShutdownSignal.voiddoFinalShutdown()private APIvoidflush()Public API - flush the output buffersInetAddressgetAddress()Retrieve the host.intgetChannelMax()Get the negotiated maximum channel number.intgetChannelRpcTimeout()Map<String,Object>getClientProperties()Get a copy of the map of client properties sent to the serverStringgetClientProvidedName()Returns client-provided connection name, if any.ExceptionHandlergetExceptionHandler()Protected API - retrieve the current ExceptionHandlerFrameHandlergetFrameHandler()intgetFrameMax()Get the negotiated maximum frame size.intgetHeartbeat()Get the negotiated heartbeat interval.StringgetId()Public API - Returns a unique ID for this connection.InetAddressgetLocalAddress()Retrieve the local host.intgetLocalPort()Retrieve the local port number.intgetPort()Retrieve the port number.Map<String,Object>getServerProperties()Retrieve the server properties.ThreadFactorygetThreadFactory()TrafficListenergetTrafficListener()voidhandleConnectionClose(Command closeCommand)voidhandleHeartbeatFailure()private APIvoidhandleIoError(Throwable ex)private APIbooleanhandleReadFrame(Frame frame)private APIbooleanhasBrokerInitiatedShutdown()protected ChannelManagerinstantiateChannelManager(int channelMax, ThreadFactory threadFactory)booleanisRunning()protected intnegotiateChannelMax(int requestedChannelMax, int serverMax)Private API, allows for easier simulation of bogus clients.booleanprocessControlCommand(Command c)Handles incoming control commands on channel zero.booleanremoveBlockedListener(BlockedListener listener)Remove aBlockedListener.voidremoveRecoveryCanBeginListener(RecoveryCanBeginListener fn)voidsetHeartbeat(int heartbeat)Protected API - set the heartbeat timeout.voidsetId(String id)Public API - Sets a unique ID for this connection.voidsetThreadFactory(ThreadFactory threadFactory)Makes it possible to override thread factory that is used to instantiate connection network I/O loop.ShutdownSignalExceptionshutdown(Method reason, boolean initiatedByApplication, Throwable cause, boolean notifyRpc)Protected API - causes all attached channels to terminate (shutdown) with a ShutdownSignal built from the argument, and stops this connection from accepting further work from the application.voidstart()Start up the connection, including the MainLoop thread.voidstartMainLoop()Package private API, allows for easier testing.StringtoString()booleanwillCheckRpcResponseType()booleanwillShutDownConsumerExecutor()Public APIvoidwriteFrame(Frame f)Public API - sends a frame directly to the broker.-
Methods inherited from class com.rabbitmq.client.impl.ShutdownNotifierComponent
addShutdownListener, getCloseReason, isOpen, notifyListeners, removeShutdownListener, setShutdownCauseIfOpen
-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
-
Methods inherited from interface com.rabbitmq.client.ShutdownNotifier
addShutdownListener, getCloseReason, isOpen, notifyListeners, removeShutdownListener
-
-
-
-
Field Detail
-
CHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIER
public static final double CHANNEL_SHUTDOWN_TIMEOUT_MULTIPLIER
- See Also:
- Constant Field Values
-
_workService
protected ConsumerWorkService _workService
-
metricsCollector
protected final MetricsCollector metricsCollector
-
-
Constructor Detail
-
AMQConnection
public AMQConnection(ConnectionParams params, FrameHandler frameHandler)
-
AMQConnection
public AMQConnection(ConnectionParams params, FrameHandler frameHandler, MetricsCollector metricsCollector)
Construct a new connection- Parameters:
params- parameters for it
-
-
Method Detail
-
defaultClientProperties
public static Map<String,Object> defaultClientProperties()
Retrieve a copy of the default table of client properties that will be sent to the server during connection startup. This method is called when each new ConnectionFactory instance is constructed.- Returns:
- a map of client properties
- See Also:
Connection.getClientProperties()
-
disconnectChannel
public final void disconnectChannel(ChannelN channel)
Protected API - respond, in the driver thread, to a ShutdownSignal.- Parameters:
channel- the channel to disconnect
-
getAddress
public InetAddress getAddress()
Retrieve the host.- Specified by:
getAddressin interfaceConnection- Specified by:
getAddressin interfaceNetworkConnection- Returns:
- the hostname of the peer we're connected to.
-
getLocalAddress
public InetAddress getLocalAddress()
Description copied from interface:NetworkConnectionRetrieve the local host.- Specified by:
getLocalAddressin interfaceNetworkConnection- Returns:
- the client socket address.
-
getPort
public int getPort()
Retrieve the port number.- Specified by:
getPortin interfaceConnection- Specified by:
getPortin interfaceNetworkConnection- Returns:
- the port number of the peer we're connected to.
-
getLocalPort
public int getLocalPort()
Description copied from interface:NetworkConnectionRetrieve the local port number.- Specified by:
getLocalPortin interfaceNetworkConnection- Returns:
- the client socket port number
-
getFrameHandler
public FrameHandler getFrameHandler()
-
getServerProperties
public Map<String,Object> getServerProperties()
Retrieve the server properties.- Specified by:
getServerPropertiesin interfaceConnection- Returns:
- a map of the server properties. This typically includes the product name and version of the server.
-
start
public void start() throws IOException, TimeoutExceptionStart up the connection, including the MainLoop thread. Sends the protocol version negotiation header, and runs through Connection.Start/.StartOk, Connection.Tune/.TuneOk, and then calls Connection.Open and waits for the OpenOk. Sets heart-beat and frame max values after tuning has taken place.- Throws:
IOException- if an error is encountered either before, or during, protocol negotiation; sub-classesProtocolVersionMismatchExceptionandPossibleAuthenticationFailureExceptionwill be thrown in the corresponding circumstances.AuthenticationFailureExceptionwill be thrown if the broker closes the connection with ACCESS_REFUSED. If an exception is thrown, connection resources allocated can all be garbage collected when the connection object is no longer referenced.TimeoutException
-
instantiateChannelManager
protected ChannelManager instantiateChannelManager(int channelMax, ThreadFactory threadFactory)
-
configureChannelManager
protected void configureChannelManager(ChannelManager channelManager)
-
startMainLoop
public void startMainLoop()
Package private API, allows for easier testing.
-
negotiateChannelMax
protected int negotiateChannelMax(int requestedChannelMax, int serverMax)Private API, allows for easier simulation of bogus clients.
-
getChannelMax
public int getChannelMax()
Get the negotiated maximum channel number. Usable channel numbers range from 1 to this number, inclusive.- Specified by:
getChannelMaxin interfaceConnection- Returns:
- the maximum channel number permitted for this connection.
-
getFrameMax
public int getFrameMax()
Get the negotiated maximum frame size.- Specified by:
getFrameMaxin interfaceConnection- Returns:
- the maximum frame size, in octets; zero if unlimited
-
getHeartbeat
public int getHeartbeat()
Get the negotiated heartbeat interval.- Specified by:
getHeartbeatin interfaceConnection- Returns:
- the heartbeat interval, in seconds; zero if none
-
setHeartbeat
public void setHeartbeat(int heartbeat)
Protected API - set the heartbeat timeout. Should only be called during tuning.
-
setThreadFactory
public void setThreadFactory(ThreadFactory threadFactory)
Makes it possible to override thread factory that is used to instantiate connection network I/O loop. Only necessary in the environments with restricted- Parameters:
threadFactory- thread factory to use
-
getThreadFactory
public ThreadFactory getThreadFactory()
- Returns:
- Thread factory used by this connection.
-
getClientProperties
public Map<String,Object> getClientProperties()
Description copied from interface:ConnectionGet a copy of the map of client properties sent to the server- Specified by:
getClientPropertiesin interfaceConnection- Returns:
- a copy of the map of client properties
-
getClientProvidedName
public String getClientProvidedName()
Description copied from interface:ConnectionReturns client-provided connection name, if any. Note that the value returned does not uniquely identify a connection and cannot be used as a connection identifier in HTTP API requests.- Specified by:
getClientProvidedNamein interfaceConnection- Returns:
- client-provided connection name, if any
- See Also:
ConnectionFactory.newConnection(Address[], String),ConnectionFactory.newConnection(ExecutorService, Address[], String)
-
getExceptionHandler
public ExceptionHandler getExceptionHandler()
Protected API - retrieve the current ExceptionHandler- Specified by:
getExceptionHandlerin interfaceConnection- See Also:
ExceptionHandler
-
willShutDownConsumerExecutor
public boolean willShutDownConsumerExecutor()
Public API- Returns:
- true if this work service instance uses its own consumerWorkServiceExecutor (as opposed to a shared one)
-
createChannel
public Channel createChannel(int channelNumber) throws IOException
Public API - Create a new channel, using the specified channel number if possible.- Specified by:
createChannelin interfaceConnection- Parameters:
channelNumber- the channel number to allocate- Returns:
- a new channel descriptor, or null if this channel number is already in use
- Throws:
IOException- if an I/O problem is encountered
-
createChannel
public Channel createChannel() throws IOException
Public API - Create a new channel, using an internally allocated channel number. If automatic connection recovery is enabled, the channel returned by this method will beRecoverable.- Specified by:
createChannelin interfaceConnection- Returns:
- a new channel descriptor, or null if none is available
- Throws:
IOException- if an I/O problem is encountered
-
writeFrame
public void writeFrame(Frame f) throws IOException
Public API - sends a frame directly to the broker.- Throws:
IOException
-
flush
public void flush() throws IOExceptionPublic API - flush the output buffers- Throws:
IOException
-
handleReadFrame
public boolean handleReadFrame(Frame frame)
private API
-
isRunning
public boolean isRunning()
-
hasBrokerInitiatedShutdown
public boolean hasBrokerInitiatedShutdown()
-
handleHeartbeatFailure
public void handleHeartbeatFailure()
private API
-
handleIoError
public void handleIoError(Throwable ex)
private API
-
doFinalShutdown
public void doFinalShutdown()
private API
-
addRecoveryCanBeginListener
public void addRecoveryCanBeginListener(RecoveryCanBeginListener fn)
-
removeRecoveryCanBeginListener
public void removeRecoveryCanBeginListener(RecoveryCanBeginListener fn)
-
processControlCommand
public boolean processControlCommand(Command c) throws IOException
Handles incoming control commands on channel zero.- Throws:
IOException- See Also:
ChannelN.processAsync(com.rabbitmq.client.Command)
-
handleConnectionClose
public void handleConnectionClose(Command closeCommand)
-
shutdown
public ShutdownSignalException shutdown(Method reason, boolean initiatedByApplication, Throwable cause, boolean notifyRpc)
Protected API - causes all attached channels to terminate (shutdown) with a ShutdownSignal built from the argument, and stops this connection from accepting further work from the application.ShutdownListeners for the connection are notified when the main loop terminates.- Parameters:
reason- description of reason for the exceptioninitiatedByApplication- true if caused by a client commandcause- trigger exception which caused shutdownnotifyRpc- true if outstanding rpc should be informed of shutdown- Returns:
- a shutdown signal built using the given arguments
-
close
public void close() throws IOExceptionPublic API - Close this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'. Waits for all the close operations to complete.- Specified by:
closein interfaceAutoCloseable- Specified by:
closein interfaceCloseable- Specified by:
closein interfaceConnection- Throws:
IOException- if an I/O problem is encountered
-
close
public void close(int timeout) throws IOExceptionPublic API - Close this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'. This method behaves in a similar way asConnection.close(), with the only difference that it waits with a provided timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
closein interfaceConnection- Parameters:
timeout- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity- Throws:
IOException- if an I/O problem is encountered
-
close
public void close(int closeCode, String closeMessage) throws IOExceptionPublic API - Close this connection and all its channels. Waits for all the close operations to complete.- Specified by:
closein interfaceConnection- Parameters:
closeCode- the close code (See under "Reply Codes" in the AMQP specification)closeMessage- a message indicating the reason for closing the connection- Throws:
IOException- if an I/O problem is encountered
-
close
public void close(int closeCode, String closeMessage, int timeout) throws IOExceptionPublic API - Close this connection and all its channels. Waits with the given timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
closein interfaceConnection- Parameters:
closeCode- the close code (See under "Reply Codes" in the AMQP specification)closeMessage- a message indicating the reason for closing the connectiontimeout- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity- Throws:
IOException- if an I/O problem is encountered
-
abort
public void abort()
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'. Forces the connection to close. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abortin interfaceConnection
-
abort
public void abort(int closeCode, String closeMessage)Public API - Abort this connection and all its channels. Forces the connection to close and waits for all the close operations to complete. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abortin interfaceConnection- Parameters:
closeCode- the close code (See under "Reply Codes" in the AMQP specification)closeMessage- a message indicating the reason for closing the connection
-
abort
public void abort(int timeout)
Public API - Abort this connection and all its channels with theAMQP.REPLY_SUCCESSclose code and message 'OK'. This method behaves in a similar way asConnection.abort(), with the only difference that it waits with a provided timeout for all the close operations to complete. When timeout is reached the socket is forced to close.- Specified by:
abortin interfaceConnection- Parameters:
timeout- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity
-
abort
public void abort(int closeCode, String closeMessage, int timeout)Public API - Abort this connection and all its channels. Forces the connection to close and waits with the given timeout for all the close operations to complete. When timeout is reached the socket is forced to close. Any encountered exceptions in the close operations are silently discarded.- Specified by:
abortin interfaceConnection- Parameters:
closeCode- the close code (See under "Reply Codes" in the AMQP specification)closeMessage- a message indicating the reason for closing the connectiontimeout- timeout (in milliseconds) for completing all the close-related operations, use -1 for infinity
-
close
public void close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause) throws IOExceptionProtected API - Delegates tothe six-argument close method, passing -1 for the timeout, and false for the abort flag.- Throws:
IOException
-
close
public void close(int closeCode, String closeMessage, boolean initiatedByApplication, Throwable cause, int timeout, boolean abort) throws IOExceptionProtected API - Close this connection with the given code, message, source and timeout value for all the close operations to complete. Specifies if any encountered exceptions should be ignored.- Throws:
IOException
-
addBlockedListener
public void addBlockedListener(BlockedListener listener)
Description copied from interface:ConnectionAdd aBlockedListener.- Specified by:
addBlockedListenerin interfaceConnection- Parameters:
listener- the listener to add
-
removeBlockedListener
public boolean removeBlockedListener(BlockedListener listener)
Description copied from interface:ConnectionRemove aBlockedListener.- Specified by:
removeBlockedListenerin interfaceConnection- Parameters:
listener- the listener to remove- Returns:
trueif the listener was found and removed,falseotherwise
-
clearBlockedListeners
public void clearBlockedListeners()
Description copied from interface:ConnectionRemove allBlockedListeners.- Specified by:
clearBlockedListenersin interfaceConnection
-
getId
public String getId()
Public API - Returns a unique ID for this connection. This ID must be unique, otherwise some services like the metrics collector won't work properly. This ID doesn't have to be provided by the client, services that require it will be assigned automatically if not set.- Specified by:
getIdin interfaceConnection- Returns:
- unique ID for this connection.
-
setId
public void setId(String id)
Public API - Sets a unique ID for this connection. This ID must be unique, otherwise some services like the metrics collector won't work properly. This ID doesn't have to be provided by the client, services that require it will be assigned automatically if not set.- Specified by:
setIdin interfaceConnection
-
getChannelRpcTimeout
public int getChannelRpcTimeout()
-
willCheckRpcResponseType
public boolean willCheckRpcResponseType()
-
getTrafficListener
public TrafficListener getTrafficListener()
-
-