ocf-shellfuncs.in

linux集群服务器软件代码包

#!/bin/sh
#
# 	$Id: ocf-shellfuncs.in,v 1.8 2004/12/20 16:17:19 sunjd Exp $
#
# 	Common helper functions for the OCF Resource Agents supplied by
# 	heartbeat.
#
# Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Br閑
#                    All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like.  Any license provided herein, whether implied or
# otherwise, applies only to this software file.  Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#


# TODO: Some of this should probably split out into a generic OCF
# library for shell scripts, but for the time being, we'll just use it
# ourselves...
#

# TODO wish-list:
# - Generic function for evaluating version numbers
# - Generic function(s) to extract stuff from our own meta-data
# - Logging function which automatically adds resource identifier etc
#   prefixes
# TODO: Move more common functionality for OCF RAs here.
#
HA_D=@sysconfdir@/ha.d
ocf_set_defaults() {
	ACTION="$1"

	# Return to sanity for the agents...
	unset LANG
	LC_ALL=C
	export LC_ALL

	# TODO: Review whether we really should source this. Or rewrite
	# to match some emerging helper function syntax...? This imports
	# things which no OCF RA should be using...

	. ${HA_D}/shellfuncs

	OCF_SUCCESS=0
	OCF_ERR_GENERIC=1
	OCF_ERR_ARGS=2
	OCF_ERR_UNIMPLEMENTED=3
	OCF_ERR_PERM=4
	OCF_ERR_INSTALLED=5
	OCF_ERR_CONFIGURED=6
	OCF_NOT_RUNNING=7

	VARLIB=@localstatedir@/lib/@HB_PKG@

	# TODO: Anything else we should be setting and thus checking?
	if [ "x$OCF_RA_VERSION_MAJOR" != "x1" ]; then
		ha_log "ERROR: This script is OCF RA API 1.x compliant only!"
		exit $OCF_ERR_UNIMPLEMENTED
	fi
	# TODO: Should the minor level really be a number and not rather
	# a list of flags...?
	if [ -z "$OCF_RA_VERSION_MINOR" ]; then
		ha_log "ERROR: No OCF RA minor version set."
		exit $OCF_ERR_UNIMPLEMENTED
	fi
	if [ ! -d "$OCF_ROOT" ]; then
		ha_log "ERROR: OCF_ROOT points to non-directory $OCF_ROOT."
		exit $OCF_ERR_GENERIC
	fi

	if [ "x$ACTION" = "xmeta-data" ]; then
		export OCF_RESOURCE_INSTANCE="undef"
	fi
	
	if [ -z "$OCF_RESOURCE_INSTANCE" ]; then
		ha_log "ERROR: Need to tell us our resource instance name."
		exit $OCF_ERR_ARGS
	fi
	if [ -z "$OCF_RESOURCE_TYPE" ]; then
		ha_log "ERROR: Need to tell us our resource type."
		exit $OCF_ERR_ARGS
	fi
}

ocf_log() {
	# TODO: Revisit and implement internally.
	local prio=shift
	local msg="$*"

	if [ "$prio" = "err" ]; then
		msg="ERROR: $msg"
	elif  [ "$prio" = "warn" ]; then
		msg="WARN: $msg"
	elif  [ "$prio" = "info" ]; then
		msg="INFO: $msg"

	msg="$OCF_RESOURCE_INSTANCE $msg"

	ha_log "$msg"
}

ocf_set_defaults $*