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Add more logging framework documentation.

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Jon Siwek 2011-12-09 14:30:21 -06:00
parent 6d3b29b0ec
commit 1f57827e54
6 changed files with 272 additions and 59 deletions
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scripts/base/frameworks/logging/postprocessors/scp.bro
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##! This script defines a postprocessing function that can be applied
##! to a logging filter in order to automatically SCP (secure copy)
##! a log stream (or a subset of it) to a remote host at configurable
##! rotation time intervals.
##! rotation time intervals. Generally, to use this functionality
##! you must handle the :bro:id:`bro_init` event and do the following
##! in your handler:
##!
##! 1) Create a new :bro:type:`Log::Filter` record that defines a name/path,
##! rotation interval, and set the ``postprocessor`` to
##! :bro:id:`Log::scp_postprocessor`.
##! 2) Add the filter to a logging stream using :bro:id:`Log::add_filter`.
##! 3) Add a table entry to :bro:id:`Log::scp_destinations` for the filter's
##! writer/path pair which defines a set of :bro:type:`Log::SCPDestination`
##! records.
module Log;
export {
## This postprocessor SCP's the rotated-log to all the remote hosts
## Secure-copies the rotated-log to all the remote hosts
## defined in :bro:id:`Log::scp_destinations` and then deletes
## the local copy of the rotated-log. It's not active when
## reading from trace files.
##
## info: A record holding meta-information about the log file to be
## postprocessed.
##
## Returns: True if secure-copy system command was initiated or
## if no destination was configured for the log as described
## by *info*.
global scp_postprocessor: function(info: Log::RotationInfo): bool;
## A container that describes the remote destination for the SCP command
## argument as ``user@host:path``.
type SCPDestination: record {
## The remote user to log in as. A trust mechanism should be
## pre-established.
user: string;
## The remote host to which to transfer logs.
host: string;
## The path/directory on the remote host to send logs.
path: string;
};
## A table indexed by a particular log writer and filter path, that yields
## a set remote destinations. The :bro:id:`Log::scp_postprocessor`
## function queries this table upon log rotation and performs a secure
## copy of the rotated-log to each destination in the set.
## copy of the rotated-log to each destination in the set. This
## table can be modified at run-time.
global scp_destinations: table[Writer, string] of set[SCPDestination];
}