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#include "maat.h"
#include "config.h"
#include <MESA/maat.h>
#include <cjson/cJSON.h>
static struct maat * dp_trace_maat_instance_create()
{
int ret = 0;
int redis_port_begin = 0;
int redis_port_end = 0;
int redis_port_select = 0;
struct maat * target = NULL;
const struct config * conf = global_config_get();
struct maat_options * opts = maat_options_new();
maat_options_set_logger(opts, "log/maat.log", (enum log_level)conf->maat_log_level);
maat_options_set_instance_name(opts, "dp_trace_telemetry");
dzlog_info("maat defere load:%u", conf->deferred_load_on);
if (conf->deferred_load_on)
{
ret = maat_options_set_deferred_load_on(opts);
if (ret != 0)
{
dzlog_warn("maat_options_set_deferred_load_on function execution failed.");
}
}
maat_options_set_caller_thread_number(opts, 0);
switch (conf->maat_input_mode)
{
case MAAT_INPUT_JSON:
ret = maat_options_set_json_file(opts, conf->json_cfg_file);
if (ret != 0)
{
dzlog_error("maat_options_set_json_file function execution failed.");
goto end;
}
break;
case MAAT_INPUT_REDIS:
ret = sscanf(conf->redis_port_range, "%d-%d", &redis_port_begin, &redis_port_end);
if (ret == 1)
{
redis_port_select = redis_port_begin;
}
else if (ret == 2)
{
srand(time(NULL));
redis_port_select = redis_port_begin + rand() % (redis_port_end - redis_port_begin);
}
else
{
dzlog_error("Invalid redis port range %s, MAAT init failed.", conf->redis_port_range);
goto end;
}
maat_options_set_redis(opts, conf->redis_server, redis_port_select, conf->redis_db_idx);
break;
default:
dzlog_error("Invalid MAAT Input Mode: %d.", conf->maat_input_mode);
goto end;
break;
}
target = maat_new(opts, conf->table_schema);
if (!target)
{
dzlog_error("maat_new function execution failed.");
goto end;
}
end:
if (opts != NULL)
{
maat_options_free(opts);
}
return target;
}
void dp_trace_maat_init()
{
dzlog_info("data path trace maat init start...");
struct maat * target = dp_trace_maat_instance_create();
DP_TRACE_VERIFY(target, "create maat instance failed.");
int ret = maat_plugin_table_ex_schema_register(target, "DATAPATH_TELEMETRY_JOB", telemetry_job_add_cb,
telemetry_job_del_cb, NULL, 0, NULL);
DP_TRACE_VERIFY(ret == 0, "failed at register callback of DATAPATH_TELEMETRY_JOB.");
dzlog_info("data path trace maat init end");
}
bool maat_rule_parse(const char * table_line, struct dp_trace_telemetry_desc * telemetry_desc)
{
struct dp_trace_job_desc * job_desc = &telemetry_desc->job_desc;
bool valid_rule = false;
const struct config * conf = global_config_get();
char uuid[40] = {};
unsigned int pkt_cnt_max = 0;
char bpf_expr[MR_BPF_EXPRESSION_MAX] = "";
unsigned int timeout = 0;
unsigned int sampling = 0;
unsigned int snaplen = 0;
unsigned int with_packet_capture = 0;
char device_group[1024] = "";
char traffic_link_id[128] = "";
unsigned int is_valid = 1;
cJSON * device_group_json = NULL;
cJSON * traffic_json = NULL;
int ret = 0;
dzlog_info("telemetry add maat parse config rule:%s", table_line);
ret = sscanf(table_line, "%s\t%u\t%127s\t%u\t%u\t%u\t%u\t%1023s\t%127s\t%u", uuid, &pkt_cnt_max, bpf_expr, &timeout,
&sampling, &snaplen, &with_packet_capture, device_group, traffic_link_id, &is_valid);
if (ret != 10)
{
dzlog_warn("maat parse config failed. Not enough fields:%s", table_line);
goto end;
}
bool device_group_match = false;
device_group_json = cJSON_Parse(device_group);
if (device_group_json == NULL)
{
dzlog_error("parse to json failed:%s", device_group);
goto end;
}
cJSON * tag_sets_item = cJSON_GetObjectItem(device_group_json, "tag_sets");
if (!cJSON_IsArray(tag_sets_item))
{
dzlog_warn("tag_sets value is not array");
goto device_group_match_end;
}
int tag_sets_array_size = cJSON_GetArraySize(tag_sets_item);
for (int i = 0; i < tag_sets_array_size; i++)
{
cJSON * tag_sets_item_i = cJSON_GetArrayItem(tag_sets_item, i);
if (!cJSON_IsArray(tag_sets_item_i))
{
dzlog_warn("tag_sets value %d is not array", i);
goto device_group_match_end;
}
int tag_sets_item_i_array_size = cJSON_GetArraySize(tag_sets_item_i);
for (int j = 0; j < tag_sets_item_i_array_size; j++)
{
cJSON * inner_item = cJSON_GetArrayItem(tag_sets_item_i, j);
cJSON * inner_item_value = cJSON_GetObjectItem(inner_item, "value");
if (!cJSON_IsArray(inner_item_value))
{
dzlog_warn("tag_sets %d-%d 'value' is not array", i, j);
goto device_group_match_end;
}
int value_array_size = cJSON_GetArraySize(inner_item_value);
for (int k = 0; k < value_array_size; k++)
{
cJSON * value_item_k = cJSON_GetArrayItem(inner_item_value, k);
if (cJSON_IsString(value_item_k))
{
if (strcasecmp(conf->device_group, value_item_k->valuestring) == 0)
{
device_group_match = true;
goto device_group_match_end;
}
}
}
}
}
device_group_match_end:
if (device_group_match == false)
{
dzlog_info("This rule does not apply to the current device(%s)", conf->device_group);
goto end;
}
if (is_valid == 0)
{
dzlog_warn("rule is not valid:%s", table_line);
goto end;
}
ret = uuid_parse(uuid, telemetry_desc->uuid);
if (ret != 0)
{
dzlog_error("uuid parsing failed: %s", uuid);
goto end;
}
backspace_remove(bpf_expr, job_desc->bpf_expr);
traffic_json = cJSON_Parse(traffic_link_id);
if (traffic_json == NULL || !cJSON_IsArray(traffic_json))
{
dzlog_error("parse traffic link id string to json failed. the string is:%s", traffic_link_id);
goto end;
}
int traffic_obj_array_size = cJSON_GetArraySize(traffic_json);
int id_num_max = (traffic_obj_array_size < DP_TRACE_TRAFFIC_LINK_ID_ARRAY_SIZE_MAX)
? traffic_obj_array_size
: DP_TRACE_TRAFFIC_LINK_ID_ARRAY_SIZE_MAX;
for (int i = 0; i < id_num_max; i++)
{
cJSON * traffic_obj_item_i = cJSON_GetArrayItem(traffic_json, i);
if (traffic_obj_item_i != NULL && cJSON_IsNumber(traffic_obj_item_i))
{
uint16_t value = (uint16_t)traffic_obj_item_i->valueint;
job_desc->traffic_link_ids[job_desc->traffic_link_id_cnt++] = value;
}
}
job_desc->pkt_cnt_max = pkt_cnt_max;
job_desc->sampling = sampling;
job_desc->snaplen = snaplen;
job_desc->measurement_type = DP_TRACE_MEASUREMENT_TYPE_TELEMETRY;
valid_rule = true;
end:
if (device_group_json)
{
cJSON_Delete(device_group_json);
}
if (traffic_json)
{
cJSON_Delete(traffic_json);
}
return valid_rule;
}
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