software.amazon.awssdk.crt.eventstream

Class ClientConnection

java.lang.Object

software.amazon.awssdk.crt.CrtResource

software.amazon.awssdk.crt.eventstream.ClientConnection

All Implemented Interfaces:

AutoCloseable

public class ClientConnection
extends CrtResource

Wrapper around an event stream rpc client initiated connection.

Nested Class Summary

Nested classes/interfaces inherited from class software.amazon.awssdk.crt.CrtResource

CrtResource.ResourceInstance

Method Summary

Modifier and Type	Method and Description
protected boolean	canReleaseReferencesImmediately() Override that determines whether a resource releases its dependencies at the same time the native handle is released or if it waits.
void	closeConnection(int shutdownErrorCode) Closes the connection if it hasn't been closed already.
static CompletableFuture<Void>	connect(String hostName, short port, SocketOptions socketOptions, ClientTlsContext tlsContext, ClientBootstrap bootstrap, ClientConnectionHandler connectionHandler) Initiates a new outgoing event-stream-rpc connection.
CompletableFuture<Integer>	getClosedFuture()
boolean	isOpen()
ClientConnectionContinuation	newStream(ClientConnectionContinuationHandler continuationHandler) Create a new stream.
protected void	releaseNativeHandle() Required override method that must begin the release process of the acquired native handle
CompletableFuture<Void>	sendProtocolMessage(List<Header> headers, byte[] payload, MessageType messsageType, int messageFlags) Sends a protocol message on the connection.
void	sendProtocolMessage(List<Header> headers, byte[] payload, MessageType messsageType, int messageFlags, MessageFlushCallback callback) Sends a protocol message on the connection.

Methods inherited from class software.amazon.awssdk.crt.CrtResource

acquireNativeHandle, addRef, addReferenceTo, close, collectNativeResource, collectNativeResources, decRef, getNativeHandle, getResourceLogDescription, isNull, logNativeResources, releaseReferences, removeReferenceTo, setDescription, swapReferenceTo, waitForNoResources

Methods inherited from class java.lang.Object

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

Method Detail

closeConnection

public void closeConnection(int shutdownErrorCode)

Closes the connection if it hasn't been closed already.

Parameters:

shutdownErrorCode - aws-c-* error code to shutdown with. Specify 0 for success.

isOpen

public boolean isOpen()

Returns:

true if the connection is open, false otherwise.

sendProtocolMessage

public CompletableFuture<Void> sendProtocolMessage(List<Header> headers,
                                                   byte[] payload,
                                                   MessageType messsageType,
                                                   int messageFlags)

Sends a protocol message on the connection. Returns a completable future for synchronizing on the message flushing to the underlying transport.

Parameters:

headers - List of event-stream headers. Can be null.

payload - Payload to send for the message. Can be null.

messsageType - Message type for the rpc message.

messageFlags - Union of message flags from MessageFlags.getByteValue()

Returns:

completable future for synchronizing on the message flushing to the underlying transport.

sendProtocolMessage

public void sendProtocolMessage(List<Header> headers,
                                byte[] payload,
                                MessageType messsageType,
                                int messageFlags,
                                MessageFlushCallback callback)

Sends a protocol message on the connection. Callback will be invoked upon the message flushing to the underlying transport

Parameters:

headers - List of event-stream headers. Can be null.

payload - Payload to send for the message. Can be null.

messsageType - Message type for the rpc message.

messageFlags - Union of message flags from MessageFlags.getByteValue()

callback - will be invoked upon the message flushing to the underlying transport

newStream

public ClientConnectionContinuation newStream(ClientConnectionContinuationHandler continuationHandler)

Create a new stream. Activate() must be called on the stream for it to actually initiate the new stream.

Parameters:

continuationHandler - handler to process continuation messages and state changes.

Returns:

The new continuation object.

connect

public static CompletableFuture<Void> connect(String hostName,
                                              short port,
                                              SocketOptions socketOptions,
                                              ClientTlsContext tlsContext,
                                              ClientBootstrap bootstrap,
                                              ClientConnectionHandler connectionHandler)

Initiates a new outgoing event-stream-rpc connection. The future will be completed once the connection either succeeds or fails.

Parameters:

hostName - hostname to connect to, this can be an IPv4 address, IPv6 address, a local socket address, or a dns name.

port - port to connect to hostName with. For local socket address, this value is ignored.

socketOptions - socketOptions to use.

tlsContext - (optional) tls context to use for using SSL/TLS in the connection.

bootstrap - clientBootstrap object to run the connection on.

connectionHandler - handler to process connection messages and state changes.

Returns:

The future will be completed once the connection either succeeds or fails.

getClosedFuture

public CompletableFuture<Integer> getClosedFuture()

Returns:

a future for syncing on Connection closed.

releaseNativeHandle

protected void releaseNativeHandle()

Description copied from class: CrtResource

Required override method that must begin the release process of the acquired native handle

Specified by:

releaseNativeHandle in class CrtResource

canReleaseReferencesImmediately

protected boolean canReleaseReferencesImmediately()

Description copied from class: CrtResource

Override that determines whether a resource releases its dependencies at the same time the native handle is released or if it waits. Resources with asynchronous shutdown processes should override this with false, and establish a callback from native code that invokes releaseReferences() when the asynchronous shutdown process has completed. See HttpClientConnectionManager for an example.

Specified by:

canReleaseReferencesImmediately in class CrtResource

Returns:

true if this resource releases synchronously, false if this resource performs async shutdown