mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
Steffen Vogel
8c8a2c57b7
the number of returned samples is now updated in the passed hook_info::count
118 lines
No EOL
2.7 KiB
C
118 lines
No EOL
2.7 KiB
C
/** Time shift hook.
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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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*********************************************************************************/
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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 "timing.h"
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struct shift {
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union {
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struct timespec ts; /**< For SHIFT_TS_* modes. */
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int seq; /**< For SHIFT_SEQUENCE mode. */
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} offset;
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enum {
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SHIFT_TS_ORIGIN,
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SHIFT_TS_RECEIVED,
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SHIFT_TS_SENT,
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SHIFT_SEQUENCE
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} mode;
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};
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static int hook_shift(struct hook *h, int when, struct hook_info *j)
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{
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struct shift *p = (struct shift *) h->_vd;
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const char *mode;
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switch (when) {
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case HOOK_INIT:
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p->mode = SHIFT_TS_ORIGIN; /* Default mode */
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break;
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case HOOK_PARSE:
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if (!h->cfg)
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error("Missing configuration for hook: '%s'", plugin_name(h->_vt));
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if (config_setting_lookup_string(h->cfg, "mode", &mode)) {
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if (!strcmp(mode, "origin"))
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p->mode = SHIFT_TS_ORIGIN;
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else if (!strcmp(mode, "received"))
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p->mode = SHIFT_TS_RECEIVED;
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else if (!strcmp(mode, "sent"))
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p->mode = SHIFT_TS_SENT;
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else if (!strcmp(mode, "sequence"))
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p->mode = SHIFT_SEQUENCE;
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else
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error("Invalid mode parameter '%s' for hook '%s'", mode, plugin_name(h->_vt));
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}
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switch (p->mode) {
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case SHIFT_TS_ORIGIN:
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case SHIFT_TS_RECEIVED:
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case SHIFT_TS_SENT: {
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double offset;
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if (!config_setting_lookup_float(h->cfg, "offset", &offset))
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cerror(h->cfg, "Missing setting 'offset' for hook '%s'", plugin_name(h->_vt));
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p->offset.ts = time_from_double(offset);
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break;
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}
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case SHIFT_SEQUENCE: {
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int offset;
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if (!config_setting_lookup_int(h->cfg, "offset", &offset))
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cerror(h->cfg, "Missing setting 'offset' for hook '%s'", plugin_name(h->_vt));
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p->offset.seq = offset;
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break;
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}
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}
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break;
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case HOOK_READ:
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for (int i = 0; i < j->count; i++) {
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struct sample *s = j->samples[i];
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switch (p->mode) {
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case SHIFT_TS_ORIGIN:
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s->ts.origin = time_add(&s->ts.origin, &p->offset.ts); break;
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case SHIFT_TS_RECEIVED:
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s->ts.received = time_add(&s->ts.received, &p->offset.ts); break;
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case SHIFT_TS_SENT:
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s->ts.origin = time_add(&s->ts.sent, &p->offset.ts); break;
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case SHIFT_SEQUENCE:
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s->sequence += p->offset.seq; break;
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}
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}
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break;
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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 = "shift",
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.description = "Shift the origin timestamp or sequence number of samples",
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.type = PLUGIN_TYPE_HOOK,
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.hook = {
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.priority = 99,
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.size = sizeof(struct shift),
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.cb = hook_shift,
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.when = HOOK_STORAGE | HOOK_READ
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}
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};
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REGISTER_PLUGIN(&p)
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/** @} */ |