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#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <sys/wait.h>
#include "action.h"
#include "block.h"
#include "any_log.h"
bool action_perform(action_t *action, block_t *block, config_t *config)
{
if (action == NULL)
return true;
block_t *target = block;
bool warned = false;
bool notify = false;
for (size_t i = 0; i < action->length; i++) {
const char *key = action->parts[i].key;
const char *value = action->parts[i].value;
switch (action->parts[i].type) {
case ACTION_TARGET: {
if (strncmp(value, "block.", 6))
log_panic("Invalid target %s", value);
if (!strcmp(value + 6, "default")) {
target = block;
} else {
for (size_t i = 0; i < config->n_blocks; i++) {
if (!strcmp(value + 6, config->blocks[i]->label)) {
target = config->blocks[i];
break;
}
}
}
if (notify && target->scheme->validate_change) {
int errors = block_validate(target, config);
if (config->action_failfast && errors)
goto error;
}
notify = false;
warned = false;
break;
}
case ACTION_SET_PAIR: {
assert(target != NULL);
if (target->scheme->change_fn == NULL) {
if (!warned) {
log_warn("Block '%s' does not support 'set' actions", target->label);
warned = true;
}
continue;
}
// Skip "set-" in key
bool success = block_change(target, config, key + 4, value);
if (config->action_failfast && !success)
goto error;
notify = true;
break;
}
case ACTION_RUN_SYNC: {
// TODO: Pass information about the action/block to the script
pid_t pid = fork();
if (pid == -1) {
if (config->action_failfast) {
log_trace("Failed to fork");
goto error;
}
} else if (pid == 0) {
execl("/bin/sh", "sh", "-c", value, (char *)NULL);
unreachable();
} else {
int status;
waitpid(pid, &status, 0);
bool success = !WIFEXITED(status) || WEXITSTATUS(status) != 0;
if (config->action_strict_run && !success) {
if (config->action_failfast)
goto error;
}
}
break;
}
case ACTION_RUN_ASYNC: {
log_panic("Async not implemented");
break;
}
case ACTION_TRIGGER: {
event_t event;
event_init_trigger(&event, action->label, value);
action_t *action = target->actions[EVENT_TRIGGER];
block_event_t event_fn = target->type == BLOCK_DYNAMIC
? ((block_dynamic_t *)target)->event_fn
: NULL;
log_value_debug("Block received a trigger",
"s:target", target->label,
"s:origin", event.trigger.origin,
"s:payload", event.trigger.payload,
"b:action", action != NULL,
"b:callback", event_fn != NULL);
if (event_fn != NULL) {
// FIXME
layout_t tmp = {
.block = target,
};
event_fn(&tmp, config, event);
log_trace("Completed event callback");
} else if (action != NULL) {
action_perform(action, target, config);
} else {
log_warn("Block '%s' was triggered but had nothing to respond", target->label);
}
break;
}
default:
unreachable();
}
log_value_trace("Performed action step",
"i:type", action->parts[i].type,
"s:key", key,
"s:value", value);
}
if (notify && target->scheme->validate_change) {
int errors = block_validate(target, config);
if (config->action_failfast && errors != 0)
goto error;
}
log_debug("Performed action '%s'", action->label);
return true;
error:
log_debug("Aborted action '%s'", action->label);
return false;
}
int action_validate(action_t *action, config_t *config)
{
action->validated = true;
return 0;
}
bool action_resolve(action_t *action, config_t *config)
{
action->resolved = true;
return true;
}
void action_clean(action_t *action)
{
assert(action != NULL);
for (size_t i = 0; i < action->length; i++) {
free(action->parts[i].key);
free(action->parts[i].value);
}
free(action->parts);
free(action->label);
}
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