An event handler that logs events to disk.
This module is a
gen_event handler module that can be installed
gen_event process. It logs onto disk all events that are
sent to an event manager. Each event is written as a binary, which makes
the logging very fast. However, a tool such as the Report Browser
rb(3)) must be used to read
the files. The events are written to multiple files. When all files have
been used, the first one is reused and overwritten. The directory
location, the number of files, and the size of each file are configurable.
The directory will include one file called
index, and report files
1, 2, ....
init(Dir, MaxBytes, MaxFiles) -> Args
init(Dir, MaxBytes, MaxFiles, Pred) -> Args
Dir = file:filename()
MaxBytes = integer() >= 0
MaxFiles = 1..255
Pred = fun((Event :: term()) -> boolean())
Args = args()
Initiates the event handler. Returns
is to be used in a call to
gen_event:add_handler(EventMgr, log_mf_h, .
specifies which directory to use for the log
specifies the size of each
specifies how many
files are used.
is a predicate function used
to filter the events. If no predicate function is specified, all
events are logged.