src/aclk/aclk_tx_msgs.c
// SPDX-License-Identifier: GPL-3.0-or-later
#include "aclk_tx_msgs.h"
#include "daemon/common.h"
#include "aclk_util.h"
#include "aclk_stats.h"
#include "aclk.h"
#include "aclk_capas.h"
#include "schema-wrappers/proto_2_json.h"
#ifndef __GNUC__
#pragma region aclk_tx_msgs helper functions
#endif
// version for aclk legacy (old cloud arch)
#define ACLK_VERSION 2
static void freez_aclk_publish5a(void *ptr) {
freez(ptr);
}
static void freez_aclk_publish5b(void *ptr) {
freez(ptr);
}
uint16_t aclk_send_bin_message_subtopic_pid(mqtt_wss_client client, char *msg, size_t msg_len, enum aclk_topics subtopic, const char *msgname)
{
#ifndef ACLK_LOG_CONVERSATION_DIR
UNUSED(msgname);
#endif
uint16_t packet_id;
const char *topic = aclk_get_topic(subtopic);
if (unlikely(!topic)) {
netdata_log_error("Couldn't get topic. Aborting message send.");
return 0;
}
mqtt_wss_publish5(client, (char*)topic, NULL, msg, &freez_aclk_publish5a, msg_len, MQTT_WSS_PUB_QOS1, &packet_id);
#ifdef NETDATA_INTERNAL_CHECKS
aclk_stats_msg_published(packet_id);
#endif
if (aclklog_enabled) {
char *json = protomsg_to_json(msg, msg_len, msgname);
log_aclk_message_bin(json, strlen(json), 1, topic, msgname);
freez(json);
}
return packet_id;
}
#define TOPIC_MAX_LEN 512
#define V2_BIN_PAYLOAD_SEPARATOR "\x0D\x0A\x0D\x0A"
static int aclk_send_message_with_bin_payload(mqtt_wss_client client, json_object *msg, const char *topic, const void *payload, size_t payload_len)
{
uint16_t packet_id;
const char *str;
char *full_msg = NULL;
int len;
if (unlikely(!topic || topic[0] != '/')) {
netdata_log_error("Full topic required!");
json_object_put(msg);
return HTTP_RESP_INTERNAL_SERVER_ERROR;
}
str = json_object_to_json_string_ext(msg, JSON_C_TO_STRING_PLAIN);
len = strlen(str);
size_t full_msg_len = len;
if (payload_len)
full_msg_len += strlen(V2_BIN_PAYLOAD_SEPARATOR) + payload_len;
full_msg = mallocz(full_msg_len);
memcpy(full_msg, str, len);
json_object_put(msg);
if (payload_len) {
memcpy(&full_msg[len], V2_BIN_PAYLOAD_SEPARATOR, strlen(V2_BIN_PAYLOAD_SEPARATOR));
len += strlen(V2_BIN_PAYLOAD_SEPARATOR);
memcpy(&full_msg[len], payload, payload_len);
}
int rc = mqtt_wss_publish5(client, (char*)topic, NULL, full_msg, &freez_aclk_publish5b, full_msg_len, MQTT_WSS_PUB_QOS1, &packet_id);
if (rc == MQTT_WSS_ERR_TOO_BIG_FOR_SERVER)
return HTTP_RESP_CONTENT_TOO_LONG;
#ifdef NETDATA_INTERNAL_CHECKS
aclk_stats_msg_published(packet_id);
#endif
return 0;
}
/*
* Creates universal header common for all ACLK messages. User gets ownership of json object created.
* Usually this is freed by send function after message has been sent.
*/
static struct json_object *create_hdr(const char *type, const char *msg_id, time_t ts_secs, usec_t ts_us, int version)
{
nd_uuid_t uuid;
char uuid_str[36 + 1];
json_object *tmp;
json_object *obj = json_object_new_object();
tmp = json_object_new_string(type);
json_object_object_add(obj, "type", tmp);
if (unlikely(!msg_id)) {
uuid_generate(uuid);
uuid_unparse(uuid, uuid_str);
msg_id = uuid_str;
}
if (ts_secs == 0) {
ts_us = now_realtime_usec();
ts_secs = ts_us / USEC_PER_SEC;
ts_us = ts_us % USEC_PER_SEC;
}
tmp = json_object_new_string(msg_id);
json_object_object_add(obj, "msg-id", tmp);
tmp = json_object_new_int64(ts_secs);
json_object_object_add(obj, "timestamp", tmp);
// TODO handle this somehow on older json-c
// tmp = json_object_new_uint64(ts_us);
// probably jso->_to_json_string -> custom function
// jso->o.c_uint64 -> map this with pointer to signed int
// commit that implements json_object_new_uint64 is 3c3b592
// between 0.14 and 0.15
tmp = json_object_new_int64(ts_us);
json_object_object_add(obj, "timestamp-offset-usec", tmp);
tmp = json_object_new_int64(aclk_session_sec);
json_object_object_add(obj, "connect", tmp);
// TODO handle this somehow see above
// tmp = json_object_new_uint64(0 /* TODO aclk_session_us */);
tmp = json_object_new_int64(aclk_session_us);
json_object_object_add(obj, "connect-offset-usec", tmp);
tmp = json_object_new_int(version);
json_object_object_add(obj, "version", tmp);
return obj;
}
#ifndef __GNUC__
#pragma endregion
#endif
#ifndef __GNUC__
#pragma region aclk_tx_msgs message generators
#endif
void aclk_http_msg_v2_err(mqtt_wss_client client, const char *topic, const char *msg_id, int http_code, int ec, const char* emsg, const char *payload, size_t payload_len)
{
json_object *tmp, *msg;
msg = create_hdr("http", msg_id, 0, 0, 2);
tmp = json_object_new_int(http_code);
json_object_object_add(msg, "http-code", tmp);
tmp = json_object_new_int(ec);
json_object_object_add(msg, "error-code", tmp);
tmp = json_object_new_string(emsg);
json_object_object_add(msg, "error-description", tmp);
if (aclk_send_message_with_bin_payload(client, msg, topic, payload, payload_len)) {
netdata_log_error("Failed to send cancellation message for http reply %zu %s", payload_len, payload);
}
}
int aclk_http_msg_v2(mqtt_wss_client client, const char *topic, const char *msg_id, usec_t t_exec, usec_t created, int http_code, const char *payload, size_t payload_len)
{
json_object *tmp, *msg;
msg = create_hdr("http", msg_id, 0, 0, 2);
tmp = json_object_new_int64(t_exec);
json_object_object_add(msg, "t-exec", tmp);
tmp = json_object_new_int64(created);
json_object_object_add(msg, "t-rx", tmp);
tmp = json_object_new_int(http_code);
json_object_object_add(msg, "http-code", tmp);
int rc = aclk_send_message_with_bin_payload(client, msg, topic, payload, payload_len);
switch (rc) {
case HTTP_RESP_CONTENT_TOO_LONG:
aclk_http_msg_v2_err(client, topic, msg_id, rc, CLOUD_EC_REQ_REPLY_TOO_BIG, CLOUD_EMSG_REQ_REPLY_TOO_BIG, NULL, 0);
break;
case HTTP_RESP_INTERNAL_SERVER_ERROR:
aclk_http_msg_v2_err(client, topic, msg_id, rc, CLOUD_EC_FAIL_TOPIC, CLOUD_EMSG_FAIL_TOPIC, payload, payload_len);
break;
case HTTP_RESP_GATEWAY_TIMEOUT:
case HTTP_RESP_SERVICE_UNAVAILABLE:
aclk_http_msg_v2_err(client, topic, msg_id, rc, CLOUD_EC_SND_TIMEOUT, CLOUD_EMSG_SND_TIMEOUT, payload, payload_len);
break;
}
return rc ? rc : http_code;
}
uint16_t aclk_send_agent_connection_update(mqtt_wss_client client, int reachable) {
size_t len;
uint16_t pid;
update_agent_connection_t conn = {
.reachable = (reachable ? 1 : 0),
.lwt = 0,
.session_id = aclk_session_newarch,
.capabilities = aclk_get_agent_capas()
};
rrdhost_aclk_state_lock(localhost);
if (unlikely(!localhost->aclk_state.claimed_id)) {
netdata_log_error("Internal error. Should not come here if not claimed");
rrdhost_aclk_state_unlock(localhost);
return 0;
}
if (localhost->aclk_state.prev_claimed_id)
conn.claim_id = localhost->aclk_state.prev_claimed_id;
else
conn.claim_id = localhost->aclk_state.claimed_id;
char *msg = generate_update_agent_connection(&len, &conn);
rrdhost_aclk_state_unlock(localhost);
if (!msg) {
netdata_log_error("Error generating agent::v1::UpdateAgentConnection payload");
return 0;
}
pid = aclk_send_bin_message_subtopic_pid(client, msg, len, ACLK_TOPICID_AGENT_CONN, "UpdateAgentConnection");
if (localhost->aclk_state.prev_claimed_id) {
freez(localhost->aclk_state.prev_claimed_id);
localhost->aclk_state.prev_claimed_id = NULL;
}
return pid;
}
char *aclk_generate_lwt(size_t *size) {
update_agent_connection_t conn = {
.reachable = 0,
.lwt = 1,
.session_id = aclk_session_newarch,
.capabilities = NULL
};
rrdhost_aclk_state_lock(localhost);
if (unlikely(!localhost->aclk_state.claimed_id)) {
netdata_log_error("Internal error. Should not come here if not claimed");
rrdhost_aclk_state_unlock(localhost);
return NULL;
}
conn.claim_id = localhost->aclk_state.claimed_id;
char *msg = generate_update_agent_connection(size, &conn);
rrdhost_aclk_state_unlock(localhost);
if (!msg)
netdata_log_error("Error generating agent::v1::UpdateAgentConnection payload for LWT");
return msg;
}
#ifndef __GNUC__
#pragma endregion
#endif