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#include "job_ctx.h"
#include "common.h"
#include "trace_output.h"
#include <MESA/maat.h>
#include <cjson/cJSON.h>
#include <stdlib.h>
#include <string.h>
struct dp_trace_job_occupy
{
uint8_t uesd;
uint8_t role;
};
static struct dp_trace_job_occupy dp_trace_job_occupy[DP_TRACE_JOB_NUM_MAX] = {};
static struct dp_trace_telemetry_desc telemetry_descs[DP_TRACE_JOB_NUM_MAX] = {};
static int telemetry_unused_job_index_get();
static void job_desc_dump(struct dp_trace_job_desc * desc);
void job_rule_apply(struct dp_trace_job_desc desc[], unsigned int nr_desc)
{
int ret = 0;
for (unsigned int i = 0; i < nr_desc; i++)
{
job_desc_dump(&desc[i]);
uint8_t rule_index = desc[i].rule_index;
job_bitmap_t cur_job_id = index_to_job_id(rule_index);
uint8_t cur_job_uesd = is_job_id_used(cur_job_id);
// The job that was not originally in the system is now included in the configuration.
if (cur_job_uesd == 0 && desc[i].enable && strlen(desc[i].bpf_expr) != 0)
{
ret = marsio_dp_trace_job_add(mr_instance, &desc[i]);
if (ret == 0)
{
dzlog_error("add rule %u failed. bpf_expr is: %s", rule_index, desc[i].bpf_expr);
}
else
{
dp_trace_job_occupy[rule_index].uesd = 1;
dp_trace_job_occupy[rule_index].role = desc[i].measurement_type;
dzlog_info("add rule %u successfully. bpf_expr is: %s", rule_index, desc[i].bpf_expr);
}
continue;
}
// The job that originally existed in the system is not in the configuration now.
if (cur_job_uesd == 1 && (desc[i].enable == false || strlen(desc[i].bpf_expr) == 0))
{
ret = marsio_dp_trace_job_del(mr_instance, cur_job_id);
if (ret < 0)
{
dzlog_error("del rule %u failed. bpf_expr is: %s", rule_index, desc[i].bpf_expr);
}
else
{
uint8_t tmp_role = dp_trace_job_occupy[rule_index].role;
dp_trace_job_occupy[rule_index].uesd = 0;
dp_trace_job_occupy[rule_index].role = DP_TRACE_NO_ROLE;
if (tmp_role == DP_TRACE_MEASUREMENT_TYPE_TRACE)
{
dp_trace_pcapng_merger(cur_job_id);
}
dzlog_info("del rule %u successfully. bpf_expr is: %s", rule_index, desc[i].bpf_expr);
}
continue;
}
}
}
void telemetry_job_add_cb(const char * table_name, int table_id, const char * key, const char * table_line, void ** ad,
long argl, void * argp)
{
int ret = 0;
struct dp_trace_telemetry_desc telemetry_desc = {};
struct dp_trace_job_desc * job_desc = &telemetry_desc.job_desc;
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[512];
char traffic_link_id[1024];
unsigned int is_valid = 0;
dzlog_debug("telemetry add maat parse config rule:%s", table_line);
ret = sscanf(table_line, "%s\t%u\t%s\t%u\t%u\t%u\t%u\t%512s\t%1024s\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);
// return;
}
if (is_valid == 0)
{
dzlog_warn("rule is not valid:%s", table_line);
// return;
}
ret = uuid_parse(uuid, telemetry_desc.uuid);
if (ret != 0)
{
dzlog_error("uuid parsing failed: %s", uuid);
return;
}
backspace_remove(bpf_expr, job_desc->bpf_expr);
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;
int index = telemetry_unused_job_index_get();
if (index < 0)
{
dzlog_warn("no enough job for bpf_expr:", job_desc->bpf_expr);
return;
}
job_desc->rule_index = index;
job_desc->enable = true;
memcpy(&telemetry_descs[index], &telemetry_desc, sizeof(struct dp_trace_telemetry_desc));
job_rule_apply(&telemetry_descs[index].job_desc, 1);
*ad = &telemetry_descs[index];
}
void telemetry_job_del_cb(int table_id, void ** ad, long argl, void * argp)
{
struct dp_trace_telemetry_desc * telemetry_desc = *ad;
struct dp_trace_job_desc * job_desc = &telemetry_desc->job_desc;
job_desc->enable = false;
job_rule_apply(job_desc, 1);
return;
}
int is_job_id_used(job_bitmap_t job_id)
{
unsigned int index = job_id_to_index(job_id);
return dp_trace_job_occupy[index].uesd;
}
uint8_t job_id_role_get(job_bitmap_t job_id)
{
unsigned int index = job_id_to_index(job_id);
return dp_trace_job_occupy[index].role;
}
int job_id_to_index(job_bitmap_t job_id)
{
assert(__builtin_popcount(job_id) == 1);
unsigned int index = __builtin_ctz(job_id);
assert(index < DP_TRACE_JOB_NUM_MAX);
return index;
}
job_bitmap_t index_to_job_id(unsigned int index)
{
assert(index < DP_TRACE_JOB_NUM_MAX);
return 1 << index;
}
void telemetry_job_uuid_get(job_bitmap_t job_id, unsigned char * uu)
{
unsigned int index = job_id_to_index(job_id);
uuid_copy(uu, telemetry_descs[index].uuid);
}
static int telemetry_unused_job_index_get()
{
#define TELEMETRY_INDEX_START 8
#define TELEMETRY_INDEX_END DP_TRACE_JOB_NUM_MAX
int ret = -1;
for (unsigned int i = TELEMETRY_INDEX_START; i < TELEMETRY_INDEX_END; i++)
{
job_bitmap_t job_id = index_to_job_id(i);
if (is_job_id_used(job_id))
{
continue;
}
ret = i;
break;
}
return ret;
}
static void job_desc_dump(struct dp_trace_job_desc * desc)
{
dzlog_info("dp trace job desc dump");
dzlog_info("enable:%u", desc->enable);
dzlog_info("measurement_type:%u", desc->measurement_type);
dzlog_info("rule_index:%u", desc->rule_index);
dzlog_info("bpf_expr:%s", desc->bpf_expr);
dzlog_info("pkt_cnt_max:%u", desc->pkt_cnt_max);
dzlog_info("sampling:%u", desc->sampling);
dzlog_info("snaplen:%u", desc->snaplen);
}
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