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/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "common.h"
#include "comms.h"
#include "db.h"
#include "log.h"
#include "daemon.h"
#include "zbxjson.h"
#include "proxy.h"
#include "zbxself.h"
#include "dbcache.h"
#include "zbxtasks.h"
#include "dbcache.h"
#include "datasender.h"
#include "zbxcrypto.h"
#include "zbxcompress.h"
extern ZBX_THREAD_LOCAL unsigned char process_type;
extern unsigned char program_type;
extern ZBX_THREAD_LOCAL int server_num, process_num;
extern zbx_vector_ptr_t zbx_addrs;
extern char *CONFIG_HOSTNAME;
extern char *CONFIG_SOURCE_IP;
extern unsigned int configured_tls_connect_mode;
#define ZBX_DATASENDER_AVAILABILITY 0x0001
#define ZBX_DATASENDER_HISTORY 0x0002
#define ZBX_DATASENDER_DISCOVERY 0x0004
#define ZBX_DATASENDER_AUTOREGISTRATION 0x0008
#define ZBX_DATASENDER_TASKS 0x0010
#define ZBX_DATASENDER_TASKS_RECV 0x0020
#define ZBX_DATASENDER_TASKS_REQUEST 0x8000
#define ZBX_DATASENDER_DB_UPDATE (ZBX_DATASENDER_HISTORY | ZBX_DATASENDER_DISCOVERY | \
ZBX_DATASENDER_AUTOREGISTRATION | ZBX_DATASENDER_TASKS | \
ZBX_DATASENDER_TASKS_RECV)
/******************************************************************************
* *
* Function: get_hist_upload_state *
* *
* Purpose: Get current history upload state (disabled/enabled) *
* *
* Parameters: buffer - [IN] the contents of a packet (JSON) *
* *
* Return value: SUCCEED - processed successfully *
* FAIL - an error occurred *
* *
******************************************************************************/
static void get_hist_upload_state(const char *buffer, int *state)
{
struct zbx_json_parse jp;
char value[MAX_STRING_LEN];
if (NULL == buffer || '\0' == *buffer || SUCCEED != zbx_json_open(buffer, &jp))
return;
if (SUCCEED == zbx_json_value_by_name(&jp, ZBX_PROTO_TAG_PROXY_UPLOAD, value, sizeof(value), NULL))
{
if (0 == strcmp(value, ZBX_PROTO_VALUE_PROXY_UPLOAD_ENABLED))
*state = ZBX_PROXY_UPLOAD_ENABLED;
else if (0 == strcmp(value, ZBX_PROTO_VALUE_PROXY_UPLOAD_DISABLED))
*state = ZBX_PROXY_UPLOAD_DISABLED;
}
}
/******************************************************************************
* *
* Function: proxy_data_sender *
* *
* Purpose: collects host availability, history, discovery, autoregistration *
* data and sends 'proxy data' request *
* *
******************************************************************************/
static int proxy_data_sender(int *more, int now, int *hist_upload_state)
{
static int data_timestamp = 0, task_timestamp = 0, upload_state = SUCCEED;
zbx_socket_t sock;
struct zbx_json j;
struct zbx_json_parse jp, jp_tasks;
int availability_ts, history_records = 0, discovery_records = 0,
areg_records = 0, more_history = 0, more_discovery = 0, more_areg = 0, proxy_delay;
zbx_uint64_t history_lastid = 0, discovery_lastid = 0, areg_lastid = 0, flags = 0;
zbx_timespec_t ts;
char *error = NULL, *buffer = NULL;
zbx_vector_ptr_t tasks;
zabbix_log(LOG_LEVEL_DEBUG, "In %s()", __func__);
*more = ZBX_PROXY_DATA_DONE;
zbx_json_init(&j, 16 * ZBX_KIBIBYTE);
zbx_json_addstring(&j, ZBX_PROTO_TAG_REQUEST, ZBX_PROTO_VALUE_PROXY_DATA, ZBX_JSON_TYPE_STRING);
zbx_json_addstring(&j, ZBX_PROTO_TAG_HOST, CONFIG_HOSTNAME, ZBX_JSON_TYPE_STRING);
zbx_json_addstring(&j, ZBX_PROTO_TAG_SESSION, zbx_dc_get_session_token(), ZBX_JSON_TYPE_STRING);
if (SUCCEED == upload_state && CONFIG_PROXYDATA_FREQUENCY <= now - data_timestamp &&
ZBX_PROXY_UPLOAD_DISABLED != *hist_upload_state)
{
if (SUCCEED == get_interface_availability_data(&j, &availability_ts))
flags |= ZBX_DATASENDER_AVAILABILITY;
history_records = proxy_get_hist_data(&j, &history_lastid, &more_history);
if (0 != history_lastid)
flags |= ZBX_DATASENDER_HISTORY;
discovery_records = proxy_get_dhis_data(&j, &discovery_lastid, &more_discovery);
if (0 != discovery_records)
flags |= ZBX_DATASENDER_DISCOVERY;
areg_records = proxy_get_areg_data(&j, &areg_lastid, &more_areg);
if (0 != areg_records)
flags |= ZBX_DATASENDER_AUTOREGISTRATION;
if (ZBX_PROXY_DATA_MORE != more_history && ZBX_PROXY_DATA_MORE != more_discovery &&
ZBX_PROXY_DATA_MORE != more_areg)
{
data_timestamp = now;
}
}
zbx_vector_ptr_create(&tasks);
if (SUCCEED == upload_state && ZBX_TASK_UPDATE_FREQUENCY <= now - task_timestamp)
{
task_timestamp = now;
zbx_tm_get_remote_tasks(&tasks, 0);
if (0 != tasks.values_num)
{
zbx_tm_json_serialize_tasks(&j, &tasks);
flags |= ZBX_DATASENDER_TASKS;
}
flags |= ZBX_DATASENDER_TASKS_REQUEST;
}
if (SUCCEED != upload_state)
flags |= ZBX_DATASENDER_TASKS_REQUEST;
if (0 != flags)
{
size_t buffer_size, reserved;
if (ZBX_PROXY_DATA_MORE == more_history || ZBX_PROXY_DATA_MORE == more_discovery ||
ZBX_PROXY_DATA_MORE == more_areg)
{
zbx_json_adduint64(&j, ZBX_PROTO_TAG_MORE, ZBX_PROXY_DATA_MORE);
*more = ZBX_PROXY_DATA_MORE;
}
zbx_json_addstring(&j, ZBX_PROTO_TAG_VERSION, ZABBIX_VERSION, ZBX_JSON_TYPE_STRING);
zbx_timespec(&ts);
zbx_json_adduint64(&j, ZBX_PROTO_TAG_CLOCK, ts.sec);
zbx_json_adduint64(&j, ZBX_PROTO_TAG_NS, ts.ns);
if (0 != (flags & ZBX_DATASENDER_HISTORY) && 0 != (proxy_delay = proxy_get_delay(history_lastid)))
zbx_json_adduint64(&j, ZBX_PROTO_TAG_PROXY_DELAY, proxy_delay);
if (SUCCEED != zbx_compress(j.buffer, j.buffer_size, &buffer, &buffer_size))
{
zabbix_log(LOG_LEVEL_ERR,"cannot compress data: %s", zbx_compress_strerror());
goto clean;
}
reserved = j.buffer_size;
zbx_json_free(&j); /* json buffer can be large, free as fast as possible */
/* retry till have a connection */
if (FAIL == connect_to_server(&sock, CONFIG_SOURCE_IP, &zbx_addrs, 600, CONFIG_TIMEOUT,
configured_tls_connect_mode, CONFIG_PROXYDATA_FREQUENCY, LOG_LEVEL_WARNING))
{
goto clean;
}
upload_state = put_data_to_server(&sock, &buffer, buffer_size, reserved, &error);
get_hist_upload_state(sock.buffer, hist_upload_state);
if (SUCCEED != upload_state)
{
*more = ZBX_PROXY_DATA_DONE;
if (ZBX_PROXY_UPLOAD_DISABLED != *hist_upload_state)
{
zabbix_log(LOG_LEVEL_WARNING, "cannot send proxy data to server at \"%s\": %s",
sock.peer, error);
}
zbx_free(error);
}
else
{
if (0 != (flags & ZBX_DATASENDER_AVAILABILITY))
zbx_set_availability_diff_ts(availability_ts);
if (SUCCEED == zbx_json_open(sock.buffer, &jp))
{
if (SUCCEED == zbx_json_brackets_by_name(&jp, ZBX_PROTO_TAG_TASKS, &jp_tasks))
flags |= ZBX_DATASENDER_TASKS_RECV;
}
if (0 != (flags & ZBX_DATASENDER_DB_UPDATE))
{
DBbegin();
if (0 != (flags & ZBX_DATASENDER_TASKS))
{
zbx_tm_update_task_status(&tasks, ZBX_TM_STATUS_DONE);
zbx_vector_ptr_clear_ext(&tasks, (zbx_clean_func_t)zbx_tm_task_free);
}
if (0 != (flags & ZBX_DATASENDER_TASKS_RECV))
{
zbx_tm_json_deserialize_tasks(&jp_tasks, &tasks);
zbx_tm_save_tasks(&tasks);
}
if (0 != (flags & ZBX_DATASENDER_HISTORY))
proxy_set_hist_lastid(history_lastid);
if (0 != (flags & ZBX_DATASENDER_DISCOVERY))
proxy_set_dhis_lastid(discovery_lastid);
if (0 != (flags & ZBX_DATASENDER_AUTOREGISTRATION))
proxy_set_areg_lastid(areg_lastid);
DBcommit();
}
}
disconnect_server(&sock);
}
clean:
zbx_vector_ptr_clear_ext(&tasks, (zbx_clean_func_t)zbx_tm_task_free);
zbx_vector_ptr_destroy(&tasks);
zbx_json_free(&j);
zbx_free(buffer);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s more:%d flags:0x" ZBX_FS_UX64, __func__,
zbx_result_string(upload_state), *more, flags);
return history_records + discovery_records + areg_records;
}
/******************************************************************************
* *
* Function: main_datasender_loop *
* *
* Purpose: periodically sends history and events to the server *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(datasender_thread, args)
{
int records = 0, hist_upload_state = ZBX_PROXY_UPLOAD_ENABLED, more;
double time_start, time_diff = 0.0, time_now;
process_type = ((zbx_thread_args_t *)args)->process_type;
server_num = ((zbx_thread_args_t *)args)->server_num;
process_num = ((zbx_thread_args_t *)args)->process_num;
zabbix_log(LOG_LEVEL_INFORMATION, "%s #%d started [%s #%d]", get_program_type_string(program_type),
server_num, get_process_type_string(process_type), process_num);
update_selfmon_counter(ZBX_PROCESS_STATE_BUSY);
#if defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
zbx_tls_init_child();
#endif
zbx_setproctitle("%s [connecting to the database]", get_process_type_string(process_type));
DBconnect(ZBX_DB_CONNECT_NORMAL);
while (ZBX_IS_RUNNING())
{
time_now = zbx_time();
zbx_update_env(time_now);
zbx_setproctitle("%s [sent %d values in " ZBX_FS_DBL " sec, sending data]",
get_process_type_string(process_type), records, time_diff);
records = 0;
time_start = time_now;
do
{
records += proxy_data_sender(&more, (int)time_now, &hist_upload_state);
time_now = zbx_time();
time_diff = time_now - time_start;
}
while (ZBX_PROXY_DATA_MORE == more && time_diff < SEC_PER_MIN && ZBX_IS_RUNNING());
zbx_setproctitle("%s [sent %d values in " ZBX_FS_DBL " sec, idle %d sec]",
get_process_type_string(process_type), records, time_diff,
ZBX_PROXY_DATA_MORE != more ? ZBX_TASK_UPDATE_FREQUENCY : 0);
if (ZBX_PROXY_DATA_MORE != more)
zbx_sleep_loop(ZBX_TASK_UPDATE_FREQUENCY);
}
zbx_setproctitle("%s #%d [terminated]", get_process_type_string(process_type), process_num);
while (1)
zbx_sleep(SEC_PER_MIN);
}
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