nut-debian/drivers/powerman-pdu.c
2011-01-26 10:35:08 +01:00

280 lines
7.1 KiB
C

/* powerman-pdu.c - Powerman PDU client driver
*
* Copyright (C) 2008 Arnaud Quette <aquette.dev@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "main.h"
#include <libpowerman.h>
#define DRIVER_NAME "Powerman PDU client driver"
#define DRIVER_VERSION "0.11"
/* driver description structure */
upsdrv_info_t upsdrv_info = {
DRIVER_NAME,
DRIVER_VERSION,
"Arnaud Quette <aquette.dev@gmail.com>",
DRV_EXPERIMENTAL,
{ NULL }
};
/* Powerman functions and variables */
static pm_err_t query_one(pm_handle_t pm, char *s, int mode);
static pm_err_t query_all(pm_handle_t pm, int mode);
pm_handle_t pm;
char ebuf[64];
/* modes to snmp_ups_walk. */
#define WALKMODE_INIT 0
#define WALKMODE_UPDATE 1
static int reconnect_ups(void);
static int instcmd(const char *cmdname, const char *extra)
{
pm_err_t rv = -1;
char *cmdsuffix = NULL;
char *cmdindex = NULL;
char outletname[SMALLBUF];
upsdebugx(1, "entering instcmd (%s)", cmdname);
/* only consider the end of the command */
if ( (cmdsuffix = strrchr(cmdname, '.')) == NULL )
return STAT_INSTCMD_UNKNOWN;
else
cmdsuffix++;
/* get the outlet name */
if ( (cmdindex = strchr(cmdname, '.')) == NULL )
return STAT_INSTCMD_UNKNOWN;
else {
char buf[32];
cmdindex++;
snprintf(buf, sizeof(buf), "outlet.%i.desc", atoi(cmdindex));
snprintf(outletname, sizeof(outletname), "%s", dstate_getinfo(buf));
}
/* Power on the outlet */
if (!strcasecmp(cmdsuffix, "on")) {
rv = pm_node_on(pm, outletname);
return (rv==PM_ESUCCESS)?STAT_INSTCMD_HANDLED:STAT_SET_INVALID;
}
/* Power off the outlet */
if (!strcasecmp(cmdsuffix, "off")) {
rv = pm_node_off(pm, outletname);
return (rv==PM_ESUCCESS)?STAT_INSTCMD_HANDLED:STAT_SET_INVALID;
}
/* Cycle the outlet */
if (!strcasecmp(cmdsuffix, "cycle")) {
rv = pm_node_cycle(pm, outletname);
return (rv==PM_ESUCCESS)?STAT_INSTCMD_HANDLED:STAT_SET_INVALID;
}
upslogx(LOG_NOTICE, "instcmd: unknown command [%s]", cmdname);
return STAT_INSTCMD_UNKNOWN;
}
void upsdrv_updateinfo(void)
{
pm_err_t rv = PM_ESUCCESS;
if ( (rv = query_all(pm, WALKMODE_UPDATE)) != PM_ESUCCESS) {
upslogx(2, "Error: %s (%i)\n", pm_strerror(rv, ebuf, sizeof(ebuf)), errno);
/* FIXME: try to reconnect?
* dstate_datastale();
*/
reconnect_ups();
}
}
void upsdrv_initinfo(void)
{
pm_err_t rv = PM_ESUCCESS;
/* try to detect the PDU here - call fatal_with_errno(EXIT_FAILURE, ) if it fails */
/* FIXME: can we report something useful? */
dstate_setinfo("ups.mfr", "Powerman");
dstate_setinfo("device.mfr", "Powerman");
dstate_setinfo("ups.model", "unknown PDU");
dstate_setinfo("device.model", "unknown PDU");
dstate_setinfo("device.type", "pdu");
/* Now walk the data tree */
if ( (rv = query_all(pm, WALKMODE_INIT)) != PM_ESUCCESS) {
upslogx(2, "Error: %s\n", pm_strerror(rv, ebuf, sizeof(ebuf)));
/* FIXME: try to reconnect?
* dstate_datastale();
*/
reconnect_ups();
}
upsh.instcmd = instcmd;
/* FIXME: no need for setvar (ex for outlet.n.delay.*)!? */
}
void upsdrv_shutdown(void)
{
/* FIXME: shutdown all outlets? */
fatalx(EXIT_FAILURE, "shutdown not supported");
/* OL: this must power cycle the load if possible */
/* OB: the load must remain off until the power returns */
}
/*
static int setvar(const char *varname, const char *val)
{
if (!strcasecmp(varname, "outlet.n.delay.*")) {
...
return STAT_SET_HANDLED;
}
upslogx(LOG_NOTICE, "setvar: unknown variable [%s]", varname);
return STAT_SET_UNKNOWN;
}
*/
void upsdrv_help(void)
{
}
/* list flags and values that you want to receive via -x */
void upsdrv_makevartable(void)
{
/* FIXME: anything useful to be put here? */
}
void upsdrv_initups(void)
{
pm_err_t rv = PM_ESUCCESS;
/* Connect to the PowerMan daemon */
if ((rv = pm_connect(device_path, NULL, &pm, 0)) != PM_ESUCCESS) {
fatalx(EXIT_FAILURE, "Can't connect to %s: %s\n", device_path,
pm_strerror(rv, ebuf, sizeof(ebuf)));
}
/* FIXME: suitable?
* poll_interval = 30; */
}
void upsdrv_cleanup(void)
{
pm_disconnect(pm);
}
static int reconnect_ups(void)
{
pm_err_t rv;
upsdebugx(4, "==================================================");
upsdebugx(4, "= connexion lost with Powerman, try to reconnect =");
upsdebugx(4, "==================================================");
/* clear the situation */
pm_disconnect(pm);
/* Connect to the PowerMan daemon */
if ((rv = pm_connect(device_path, NULL, &pm, 0)) != PM_ESUCCESS)
return 0;
else {
upsdebugx(4, "connexion restored with Powerman");
return 1;
}
}
/*
* powerman support functions
****************************/
static pm_err_t query_one(pm_handle_t pm, char *s, int outletnum)
{
pm_err_t rv;
pm_node_state_t ns;
char outlet_prop[64];
upsdebugx(1, "entering query_one (%s)", s);
rv = pm_node_status(pm, s, &ns);
if (rv == PM_ESUCCESS) {
upsdebugx(3, "updating status");
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.status", outletnum);
dstate_setinfo(outlet_prop, "%s", ns == PM_ON ? "on" :
ns == PM_OFF ? "off" : "unknown");
dstate_dataok();
}
return rv;
}
static pm_err_t query_all(pm_handle_t pm, int mode)
{
pm_err_t rv;
pm_node_iterator_t itr;
char outlet_prop[64];
char *s;
int outletnum = 1;
upsdebugx(1, "entering query_all ()");
rv = pm_node_iterator_create(pm, &itr);
if (rv != PM_ESUCCESS)
return rv;
while ((s = pm_node_next(itr))) {
/* in WALKMODE_UPDATE, we always call this one for the
* status update... */
if ((rv = query_one(pm, s, outletnum)) != PM_ESUCCESS)
break;
else {
/* set the initial generic properties (ie except status)
* but only if the status query succeeded */
if (mode == WALKMODE_INIT) {
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.id", outletnum);
dstate_setinfo(outlet_prop, "%i", outletnum);
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.desc", outletnum);
dstate_setinfo(outlet_prop, "%s", s);
/* we assume it's always true! */
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.switchable", outletnum);
dstate_setinfo(outlet_prop, "yes");
/* add instant commands */
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.load.on", outletnum);
dstate_addcmd(outlet_prop);
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.load.off", outletnum);
dstate_addcmd(outlet_prop);
snprintf(outlet_prop, sizeof(outlet_prop), "outlet.%i.load.cycle", outletnum);
dstate_addcmd(outlet_prop);
}
}
outletnum++;
}
pm_node_iterator_destroy(itr);
return rv;
}