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// SPDX-License-Identifier: GPL-3.0-or-later
#include "exporting_engine.h"
static struct engine *engine = NULL;
/**
* Exporting Clean Engine
*
* Clean all variables allocated inside engine structure
*
* @param en a pointer to the strcuture that will be cleaned.
*/
static void exporting_clean_engine()
{
if (!engine)
return;
#if HAVE_KINESIS
if (engine->aws_sdk_initialized)
aws_sdk_shutdown();
#endif
#if ENABLE_PROMETHEUS_REMOTE_WRITE
if (engine->protocol_buffers_initialized)
protocol_buffers_shutdown();
#endif
//Cleanup web api
prometheus_clean_server_root();
for (struct instance *instance = engine->instance_root; instance;) {
struct instance *current_instance = instance;
instance = instance->next;
clean_instance(current_instance);
}
freez((void *)engine->config.hostname);
freez(engine);
}
/**
* Clean up the main exporting thread and all connector workers on Netdata exit
*
* @param ptr thread data.
*/
static void exporting_main_cleanup(void *ptr)
{
struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
info("cleaning up...");
if (!engine) {
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
return;
}
engine->exit = 1;
int found = 0;
usec_t max = 2 * USEC_PER_SEC, step = 50000;
for (struct instance *instance = engine->instance_root; instance; instance = instance->next) {
if (!instance->exited) {
found++;
info("stopping worker for instance %s", instance->config.name);
uv_mutex_unlock(&instance->mutex);
instance->data_is_ready = 1;
uv_cond_signal(&instance->cond_var);
} else
info("found stopped worker for instance %s", instance->config.name);
}
while (found && max > 0) {
max -= step;
info("Waiting %d exporting connectors to finish...", found);
sleep_usec(step);
found = 0;
for (struct instance *instance = engine->instance_root; instance; instance = instance->next) {
if (!instance->exited)
found++;
}
}
exporting_clean_engine();
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
}
/**
* Exporting engine main
*
* The main thread used to control the exporting engine.
*
* @param ptr a pointer to netdata_static_structure.
*
* @return It always returns NULL.
*/
void *exporting_main(void *ptr)
{
netdata_thread_cleanup_push(exporting_main_cleanup, ptr);
engine = read_exporting_config();
if (!engine) {
info("EXPORTING: no exporting connectors configured");
goto cleanup;
}
if (init_connectors(engine) != 0) {
error("EXPORTING: cannot initialize exporting connectors");
send_statistics("EXPORTING_START", "FAIL", "-");
goto cleanup;
}
RRDSET *st_main_rusage = NULL;
RRDDIM *rd_main_user = NULL;
RRDDIM *rd_main_system = NULL;
create_main_rusage_chart(&st_main_rusage, &rd_main_user, &rd_main_system);
usec_t step_ut = localhost->rrd_update_every * USEC_PER_SEC;
heartbeat_t hb;
heartbeat_init(&hb);
while (!netdata_exit) {
heartbeat_next(&hb, step_ut);
engine->now = now_realtime_sec();
if (mark_scheduled_instances(engine))
prepare_buffers(engine);
send_main_rusage(st_main_rusage, rd_main_user, rd_main_system);
#ifdef UNIT_TESTING
return NULL;
#endif
}
cleanup:
netdata_thread_cleanup_pop(1);
return NULL;
}
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