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cast: only cast a single signal

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This commit is contained in:
Steffen Vogel 2019-01-16 21:43:20 +01:00
parent e621f6b40f
commit 8fa823767c
1 changed files with 45 additions and 72 deletions
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117
lib/hooks/cast.c
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@ -34,9 +34,7 @@
#include <villas/sample.h>
struct cast {
struct vlist operations;
struct vlist signals;
int index;
};
static int cast_init(struct hook *h)
@ -52,17 +50,8 @@ static int cast_init(struct hook *h)
else
return -1;
ret = vlist_init(&c->signals);
if (ret)
return ret;
/* Copy original signal list */
for (int i = 0; i < vlist_length(orig_signals); i++) {
struct signal *orig_sig = vlist_at(orig_signals, i);
struct signal *new_sig = signal_copy(orig_sig);
vlist_push(&c->signals, new_sig);
}
struct signal *orig_sig = vlist_at(orig_signals, i);
struct signal *new_sig = signal_copy(orig_sig);
return 0;
}
@ -72,10 +61,6 @@ static int cast_destroy(struct hook *h)
int ret;
struct cast *c = (struct cast *) h->_vd;
ret = vlist_destroy(&c->signals, (dtor_cb_t) signal_decref, false);
if (ret)
return ret;
return 0;
}
@ -86,75 +71,63 @@ static int cast_parse(struct hook *h, json_t *cfg)
struct signal *sig;
size_t i;
json_t *json_signals;
json_t *json_signal;
json_error_t err;
ret = json_unpack(cfg, "{ s: o }",
"signals", &json_signals
int index = -1;
const char *name = NULL;
const char *new_name = NULL;
const char *new_unit = NULL;
const char *new_format = NULL;
ret = json_unpack_ex(cfg, &err, "{ s?: s, s?: i, s?: s, s?: s, s?: s }",
"name", &name,
"index", &index,
"new_format", &new_format,
"new_name", &new_name,
"new_unit", &new_unit
);
if (ret)
return ret;
if (json_is_array(json_signals))
/* Find matching original signal descriptor */
if (index >= 0 && name != NULL)
return -1;
json_array_foreach(json_signals, i, json_signal) {
int index = -1;
const char *name = NULL;
if (index < 0 && name == NULL)
return -1;
const char *new_name = NULL;
const char *new_unit = NULL;
const char *new_format = NULL;
sig = name
? vlist_lookup(&c->signals, name)
: vlist_at_safe(&c->signals, index);
if (!sig)
return -1;
ret = json_unpack(json_signal, "{ s?: s, s?: i, s?: s, s?: s, s?: s }",
"name", &name,
"index", &index,
"new_format", &new_format,
"new_name", &new_name,
"new_unit", &new_unit
);
if (ret)
return ret;
/* Cast to new format */
if (new_format) {
enum signal_type fmt;
/* Find matching original signal descriptor */
if (index >= 0 && name != NULL)
fmt = signal_type_from_str(new_format);
if (fmt == SIGNAL_TYPE_INVALID)
return -1;
if (index < 0 && name == NULL)
return -1;
sig->type = fmt;
}
sig = name
? vlist_lookup(&c->signals, name)
: vlist_at_safe(&c->signals, index);
if (!sig)
return -1;
/* Set new name */
if (new_name) {
if (sig->name)
free(sig->name);
/* Cast to new format */
if (new_format) {
enum signal_type fmt;
sig->name = strdup(new_name);
}
fmt = signal_type_from_str(new_format);
if (fmt == SIGNAL_TYPE_INVALID)
return -1;
/* Set new unit */
if (new_unit) {
if (sig->unit)
free(sig->unit);
sig->type = fmt;
}
/* Set new name */
if (new_name) {
if (sig->name)
free(sig->name);
sig->name = strdup(new_name);
}
/* Set new unit */
if (new_unit) {
if (sig->unit)
free(sig->unit);
sig->unit = strdup(new_unit);
}
sig->unit = strdup(new_unit);
}
return 0;
@ -183,7 +156,7 @@ static int cast_process(struct hook *h, struct sample *smps[], unsigned *cnt)
static struct plugin p = {
.name = "cast",
.description = "Cast signals",
.description = "Cast signals types",
.type = PLUGIN_TYPE_HOOK,
.hook = {
.flags = HOOK_NODE_READ | HOOK_PATH,