Acts just like SocketAppender except that instead of connecting to a given remote log server, SocketHubAppender
accepts connections from the remote log servers as clients. It can accept more than one connection. When a log event is received, the event is sent to the set of currently connected remote log servers. Implemented this way it does not require any update to the configuration file to send data to another remote log server. The remote log server simply connects to the host and port the SocketHubAppender
is running on.
The SocketHubAppender
does not store events such that the remote side will events that arrived after the establishment of its connection. Once connected, events arrive in order as guaranteed by the TCP protocol.
This implementation borrows heavily from the SocketAppender.
The SocketHubAppender has the following characteristics:
SocketHubAppender
does not use a layout. It ships a serialized spi::LoggingEvent object to the remote side.
SocketHubAppender
relies on the TCP protocol. Consequently, if the remote side is reachable, then log events will eventually arrive at remote client.
SocketHubAppender
exits before the SocketHubAppender
is closed either explicitly or subsequent to garbage collection, then there might be untransmitted data in the pipe which might be lost. This is a common problem on Windows based systems. SocketHubAppender
either explicitly or by calling the LogManager::shutdown method before exiting the application.
Public Member Functions | |
SocketHubAppender () | |
~SocketHubAppender () | |
SocketHubAppender (int port) | |
Connects to remote server at address and port . | |
virtual void | activateOptions (log4cxx::helpers::Pool &p) |
Set up the socket server on the specified port. | |
virtual void | setOption (const LogString &option, const LogString &value) |
Set options. | |
virtual void | close () |
Release any resources allocated within the appender such as file handles, network connections, etc. | |
virtual void | append (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &p) |
Append an event to all of current connections. | |
virtual bool | requiresLayout () const |
The SocketHubAppender does not use a layout. | |
void | setPort (int port1) |
The Port option takes a positive integer representing the port where the server is waiting for connections. | |
int | getPort () const |
Returns value of the Port option. | |
void | setLocationInfo (bool locationInfo1) |
The LocationInfo option takes a boolean value. | |
bool | getLocationInfo () const |
Returns value of the LocationInfo option. |
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Connects to remote server at
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Set up the socket server on the specified port.
Reimplemented from AppenderSkeleton. |
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Append an event to all of current connections.
Implements AppenderSkeleton. |
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Release any resources allocated within the appender such as file handles, network connections, etc. It is a programming error to append to a closed appender. Implements Appender. |
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Returns value of the LocationInfo option.
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Returns value of the Port option.
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The SocketHubAppender does not use a layout.
Hence, this method returns Implements Appender. |
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The LocationInfo option takes a boolean value. If true, the information sent to the remote host will include location information. By default no location information is sent to the server. |
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Set options.
Reimplemented from AppenderSkeleton. |
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The Port option takes a positive integer representing the port where the server is waiting for connections.
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