OFFIS DCMTK
Version 3.6.0
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Sends spi::InternalLoggingEvent objects to a remote a log server. More...
Classes | |
class | ConnectorThread |
Public Member Functions | |
SocketAppender (const log4cplus::tstring &host, int port, const log4cplus::tstring &serverName=tstring()) | |
SocketAppender (const log4cplus::helpers::Properties &properties, log4cplus::tstring &error) | |
virtual void | close () |
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Appender (const log4cplus::helpers::Properties properties) | |
void | destructorImpl () |
void | doAppend (const log4cplus::spi::InternalLoggingEvent &event) |
This method performs threshold checks and invokes filters before delegating actual logging to the subclasses specific append method. | |
virtual log4cplus::tstring | getName () |
Get the name of this appender. | |
virtual void | setName (const log4cplus::tstring &name) |
Set the name of this appender. | |
virtual void | setErrorHandler (OFauto_ptr< ErrorHandler > eh) |
Set the ErrorHandler for this Appender. | |
virtual ErrorHandler * | getErrorHandler () |
Return the currently set ErrorHandler for this Appender. | |
virtual void | setLayout (OFauto_ptr< Layout > layout) |
Set the layout for this appender. | |
virtual Layout * | getLayout () |
Returns the layout of this appender. | |
void | setFilter (log4cplus::spi::FilterPtr f) |
Set the filter chain on this Appender. | |
log4cplus::spi::FilterPtr | getFilter () const |
Get the filter chain on this Appender. | |
LogLevel | getThreshold () const |
Returns this appenders threshold LogLevel. | |
void | setThreshold (LogLevel th) |
Set the threshold LogLevel. | |
bool | isAsSevereAsThreshold (LogLevel ll) const |
Check whether the message LogLevel is below the appender's threshold. | |
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void | addReference () const |
void | removeReference () const |
Protected Member Functions | |
void | openSocket () |
void | initConnector () |
virtual void | append (const spi::InternalLoggingEvent &event) |
Protected Attributes | |
log4cplus::helpers::Socket | socket |
log4cplus::tstring | host |
int | port |
log4cplus::tstring | serverName |
class LOG4CPLUS_EXPORT | ConnectorThread |
volatile bool | connected |
helpers::SharedObjectPtr < ConnectorThread > | connector |
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OFauto_ptr< Layout > | layout |
The layout variable does not need to be set if the appender implementation has its own layout. | |
log4cplus::tstring | name |
Appenders are named. | |
LogLevel | threshold |
There is no LogLevel threshold filtering by default. | |
log4cplus::spi::FilterPtr | filter |
The first filter in the filter chain. | |
OFauto_ptr< ErrorHandler > | errorHandler |
It is assumed and enforced that errorHandler is never null. | |
bool | closed |
Is this appender closed? | |
Private Member Functions | |
SocketAppender (const SocketAppender &) | |
SocketAppender & | operator= (const SocketAppender &) |
Friends | |
class | ConnectorThread |
Additional Inherited Members | |
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LOG4CPLUS_MUTEX_PTR_DECLARE | access_mutex |
Sends spi::InternalLoggingEvent objects to a remote a log server.
The SocketAppender has the following properties:
Remote logging is non-intrusive as far as the log event is concerned. In other words, the event will be logged with the same time stamp, NDC, location info as if it were logged locally by the client.
SocketAppenders do not use a layout.
Remote logging uses the TCP protocol. Consequently, if the server is reachable, then log events will eventually arrive at the server.
If the remote server is down, the logging requests are simply dropped. However, if and when the server comes back up, then event transmission is resumed transparently. This transparent reconneciton is performed by a connector thread which periodically attempts to connect to the server.
Logging events are automatically buffered by the native TCP implementation. This means that if the link to server is slow but still faster than the rate of (log) event production by the client, the client will not be affected by the slow network connection. However, if the network connection is slower then the rate of event production, then the client can only progress at the network rate. In particular, if the network link to the the server is down, the client will be blocked.
host
Remote host name to connect and send events to.
port
Port on remote host to send events to.
ServerName
Host name of event's origin prepended to each event.
Definition at line 88 of file socketap.h.