mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
/** Sending statistics to another node.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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/** @addtogroup hooks Hook functions
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* @{
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*/
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#include "hook.h"
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#include "plugin.h"
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#include "stats.h"
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#include "path.h"
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#include "super_node.h"
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#include "sample.h"
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#include "node.h"
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struct stats_send {
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struct node *dest;
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enum {
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STATS_SEND_MODE_PERIODIC,
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STATS_SEND_MODE_READ
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} mode;
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int decimation;
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};
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static int stats_send_init(struct hook *h)
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{
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struct stats_send *p = h->_vd;
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p->decimation = 1;
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p->mode = STATS_SEND_MODE_PERIODIC;
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return 0;
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}
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static int stats_send_parse(struct hook *h, json_t *cfg)
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{
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struct stats_send *p = h->_vd;
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assert(h->path && h->path->super_node);
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const char *dest = NULL;
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const char *mode = NULL;
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int ret;
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json_error_t err;
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ret = json_unpack_ex(cfg, &err, 0, "{ s: s, s?: s, s?: i }"
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"destination", &dest,
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"mode", &mode,
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"decimation", &p->decimation
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);
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if (ret)
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jerror(&err, "Failed to parse configuration of hook '%s'", plugin_name(h->_vt));
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if (dest) {
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assert(h->path);
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p->dest = list_lookup(&h->path->super_node->nodes, dest);
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if (!p->dest)
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jerror(&err, "Invalid destination node '%s' for hook '%s'", dest, plugin_name(h->_vt));
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}
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else
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jerror(&err, "Missing setting 'destination' for hook '%s'", plugin_name(h->_vt));
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if (mode) {
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if (!strcmp(mode, "periodic"))
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p->mode = STATS_SEND_MODE_PERIODIC;
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else if (!strcmp(mode, "read"))
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p->mode = STATS_SEND_MODE_READ;
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else
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jerror(&err, "Invalid value '%s' for setting 'mode' of hook '%s'", mode, plugin_name(h->_vt));
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}
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return 0;
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}
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static int stats_send_start(struct hook *h)
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{
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struct stats_send *p = h->_vd;
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if (p->dest->state != STATE_STOPPED)
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node_start(p->dest);
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return 0;
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}
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static int stats_send_stop(struct hook *h)
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{
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struct stats_send *p = h->_vd;
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if (p->dest->state != STATE_STOPPED)
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node_stop(p->dest);
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return 0;
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}
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static int stats_send_periodic(struct hook *h)
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{
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struct stats_send *p = h->_vd;
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if (p->mode == STATS_SEND_MODE_PERIODIC)
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stats_send(h->path->stats, p->dest);
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return 0;
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}
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static int stats_send_read(struct hook *h, struct sample *smps[], unsigned *cnt)
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{
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struct stats_send *p = h->_vd;
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assert(h->path->stats);
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if (p->mode == STATS_SEND_MODE_READ) {
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size_t processed = h->path->stats->histograms[STATS_OWD].total;
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if (processed % p->decimation == 0)
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stats_send(h->path->stats, p->dest);
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}
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return 0;
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}
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static struct plugin p = {
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.name = "stats_send",
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.description = "Send path statistics to another node",
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.type = PLUGIN_TYPE_HOOK,
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.hook = {
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.priority = 99,
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.init = stats_send_init,
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.parse = stats_send_parse,
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.start = stats_send_start,
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.stop = stats_send_stop,
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.periodic= stats_send_periodic,
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.read = stats_send_read,
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.size = sizeof(struct stats_send)
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}
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};
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REGISTER_PLUGIN(&p)
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/** @} */
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