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module-stat.c
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module-stat.c
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#define MODULE_LOG_PREFIX "stat"
#include "globals.h"
#ifdef WITH_LB
#include "cscrypt/md5.h"
#include "module-cacheex.h"
#include "module-cccam.h"
#include "oscam-array.h"
#include "oscam-cache.h"
#include "oscam-conf-chk.h"
#include "oscam-chk.h"
#include "oscam-client.h"
#include "oscam-ecm.h"
#include "oscam-files.h"
#include "oscam-lock.h"
#include "oscam-string.h"
#include "oscam-time.h"
#define UNDEF_AVG_TIME 99999 //NOT set here 0 or small value! Could cause there reader get selected
#define MAX_ECM_SEND_CACHE 16
#define LB_NONE 0
#define LB_FASTEST_READER_FIRST 1
#define LB_OLDEST_READER_FIRST 2
#define LB_LOWEST_USAGELEVEL 3
#define DEFAULT_LOCK_TIMEOUT 1000000
extern CS_MUTEX_LOCK ecmcache_lock;
extern struct ecm_request_t *ecmcwcache;
static int32_t stat_load_save;
static struct timeb last_housekeeping;
void init_stat(void)
{
stat_load_save = -100;
//checking config
if(cfg.lb_nbest_readers < 2)
{ cfg.lb_nbest_readers = DEFAULT_NBEST; }
if(cfg.lb_nfb_readers < 2)
{ cfg.lb_nfb_readers = DEFAULT_NFB; }
if(cfg.lb_min_ecmcount < 2)
{ cfg.lb_min_ecmcount = DEFAULT_MIN_ECM_COUNT; }
if(cfg.lb_max_ecmcount < 3)
{ cfg.lb_max_ecmcount = DEFAULT_MAX_ECM_COUNT; }
if(cfg.lb_reopen_seconds < 10)
{ cfg.lb_reopen_seconds = DEFAULT_REOPEN_SECONDS; }
if(cfg.lb_retrylimit < 0)
{ cfg.lb_retrylimit = DEFAULT_RETRYLIMIT; }
if(cfg.lb_stat_cleanup <= 0)
{ cfg.lb_stat_cleanup = DEFAULT_LB_STAT_CLEANUP; }
}
#define LINESIZE 1024
static uint32_t get_prid(uint16_t caid, uint32_t prid)
{
int32_t i;
for(i = 0; i < cfg.lb_noproviderforcaid.ctnum; i++)
{
CAIDTAB_DATA *d = &cfg.lb_noproviderforcaid.ctdata[i];
uint16_t tcaid = d->caid;
if(!tcaid) { break; }
if((tcaid == caid) || (tcaid < 0x0100 && (caid >> 8) == tcaid))
{
prid = 0;
break;
}
}
return prid;
}
static void get_stat_query(ECM_REQUEST *er, STAT_QUERY *q)
{
memset(q, 0, sizeof(STAT_QUERY));
q->caid = er->caid;
q->prid = get_prid(er->caid, er->prid);
q->srvid = er->srvid;
q->chid = er->chid;
q->ecmlen = er->ecmlen;
}
void load_stat_from_file(void)
{
stat_load_save = 0;
char buf[256];
char *line;
char *fname;
FILE *file;
if(!cfg.lb_savepath)
{
get_tmp_dir_filename(buf, sizeof(buf), "stat");
fname = buf;
}
else
{ fname = cfg.lb_savepath; }
file = fopen(fname, "r");
if(!file)
{
cs_log("loadbalancer: could not open %s for reading (errno=%d %s)", fname, errno, strerror(errno));
return;
}
if(!cs_malloc(&line, LINESIZE))
{
fclose(file);
return;
}
cs_log_dbg(D_LB, "loadbalancer: load statistics from %s", fname);
struct timeb ts, te;
cs_ftime(&ts);
struct s_reader *rdr = NULL;
READER_STAT *s;
int32_t i = 1;
int32_t valid = 0;
int32_t count = 0;
int32_t type = 0;
char *ptr, *saveptr1 = NULL;
char *split[12];
while(fgets(line, LINESIZE, file))
{
if(!line[0] || line[0] == '#' || line[0] == ';')
{ continue; }
if(!cs_malloc(&s, sizeof(READER_STAT)))
{ continue; }
//get type by evaluating first line:
if(type == 0)
{
if(strstr(line, " rc ")) { type = 2; }
else { type = 1; }
}
if(type == 1) //New format - faster parsing:
{
for(i = 0, ptr = strtok_r(line, ",", &saveptr1); ptr && i < 12 ; ptr = strtok_r(NULL, ",", &saveptr1), i++)
{ split[i] = ptr; }
valid = (i == 11);
if(valid)
{
strncpy(buf, split[0], sizeof(buf) - 1);
s->rc = atoi(split[1]);
s->caid = a2i(split[2], 4);
s->prid = a2i(split[3], 6);
s->srvid = a2i(split[4], 4);
s->chid = a2i(split[5], 4);
s->time_avg = atoi(split[6]);
s->ecm_count = atoi(split[7]);
s->last_received.time = atol(split[8]);
s->fail_factor = atoi(split[9]);
s->ecmlen = a2i(split[10], 2);
}
}
else //Old format - keep for compatibility:
{
i = sscanf(line, "%255s rc %04d caid %04hX prid %06X srvid %04hX time avg %d ms ecms %d last %ld fail %d len %02hX\n",
buf, &s->rc, &s->caid, &s->prid, &s->srvid,
&s->time_avg, &s->ecm_count, &s->last_received.time, &s->fail_factor, &s->ecmlen);
valid = i > 5;
}
if(valid && s->ecmlen > 0)
{
if(rdr == NULL || strcmp(buf, rdr->label) != 0)
{
LL_ITER itr = ll_iter_create(configured_readers);
while((rdr = ll_iter_next(&itr)))
{
if(strcmp(rdr->label, buf) == 0)
{
break;
}
}
}
if(rdr != NULL && strcmp(buf, rdr->label) == 0)
{
if(!rdr->lb_stat)
{
rdr->lb_stat = ll_create("lb_stat");
cs_lock_create(__func__, &rdr->lb_stat_lock, rdr->label, DEFAULT_LOCK_TIMEOUT);
}
ll_append(rdr->lb_stat, s);
count++;
}
else
{
cs_log("loadbalancer: statistics could not be loaded for %s", buf);
NULLFREE(s);
}
}
else
{
cs_log_dbg(D_LB, "loadbalancer: statistics ERROR: %s rc=%d i=%d", buf, s->rc, i);
NULLFREE(s);
}
}
fclose(file);
NULLFREE(line);
cs_ftime(&te);
#ifdef WITH_DEBUG
int64_t load_time = comp_timeb(&te, &ts);
cs_log_dbg(D_LB, "loadbalancer: statistics loaded %d records in %"PRId64" ms", count, load_time);
#endif
}
void lb_destroy_stats(struct s_reader *rdr)
{
if(!rdr->lb_stat)
return;
cs_lock_destroy(__func__, &rdr->lb_stat_lock);
ll_destroy_data(&rdr->lb_stat);
}
/**
* get statistic values for reader ridx and caid/prid/srvid/ecmlen
**/
static READER_STAT *get_stat_lock(struct s_reader *rdr, STAT_QUERY *q, int8_t lock)
{
if(!rdr->lb_stat)
{
rdr->lb_stat = ll_create("lb_stat");
cs_lock_create(__func__, &rdr->lb_stat_lock, rdr->label, DEFAULT_LOCK_TIMEOUT);
}
if(lock) { cs_readlock(__func__, &rdr->lb_stat_lock); }
LL_ITER it = ll_iter_create(rdr->lb_stat);
READER_STAT *s;
int32_t i = 0;
while((s = ll_iter_next(&it)))
{
i++;
if(s->caid == q->caid && s->prid == q->prid && s->srvid == q->srvid && s->chid == q->chid)
{
if(s->ecmlen == q->ecmlen)
{ break; }
if(!s->ecmlen)
{
s->ecmlen = q->ecmlen;
break;
}
if(!q->ecmlen) //Query without ecmlen from dvbapi
{ break; }
}
}
if(lock) { cs_readunlock(__func__, &rdr->lb_stat_lock); }
//Move stat to list start for faster access:
if (i > 10 && s && !rdr->lb_stat_busy) {
if (lock) cs_writelock(__func__, &rdr->lb_stat_lock);
ll_iter_move_first(&it);
if (lock) cs_writeunlock(__func__, &rdr->lb_stat_lock);
}
return s;
}
/**
* get statistic values for reader ridx and caid/prid/srvid/ecmlen
**/
static READER_STAT *get_stat(struct s_reader *rdr, STAT_QUERY *q)
{
return get_stat_lock(rdr, q, 1);
}
/**
* Calculates average time
*/
static void calc_stat(READER_STAT *s)
{
int32_t i, c = 0, t = 0;
for(i = 0; i < LB_MAX_STAT_TIME; i++)
{
if(s->time_stat[i] > 0)
{
t += (int32_t)s->time_stat[i];
c++;
}
}
if(!c)
{ s->time_avg = UNDEF_AVG_TIME; }
else
{ s->time_avg = t / c; }
}
/**
* Saves statistik to /tmp/.oscam/stat.n where n is reader-index
*/
static void save_stat_to_file_thread(void)
{
stat_load_save = 0;
char buf[256];
set_thread_name(__func__);
char *fname;
if(!cfg.lb_savepath)
{
get_tmp_dir_filename(buf, sizeof(buf), "stat");
fname = buf;
}
else
{ fname = cfg.lb_savepath; }
FILE *file = fopen(fname, "w");
if(!file)
{
cs_log("can't write to file %s", fname);
return;
}
struct timeb ts, te;
cs_ftime(&ts);
int32_t cleanup_timeout = (cfg.lb_stat_cleanup * 60 * 60 * 1000);
int32_t count = 0;
struct s_reader *rdr;
LL_ITER itr = ll_iter_create(configured_readers);
while((rdr = ll_iter_next(&itr)))
{
if(rdr->lb_stat)
{
rdr->lb_stat_busy = 1;
cs_writelock(__func__, &rdr->lb_stat_lock);
LL_ITER it = ll_iter_create(rdr->lb_stat);
READER_STAT *s;
while((s = ll_iter_next(&it)))
{
int64_t gone = comp_timeb(&ts, &s->last_received);
if(gone > cleanup_timeout || !s->ecmlen) //cleanup old stats
{
ll_iter_remove_data(&it);
continue;
}
//Old version, too slow to parse:
//fprintf(file, "%s rc %d caid %04hX prid %06X srvid %04hX time avg %d ms ecms %d last %ld fail %d len %02hX\n",
// rdr->label, s->rc, s->caid, s->prid,
// s->srvid, s->time_avg, s->ecm_count, s->last_received, s->fail_factor, s->ecmlen);
//New version:
fprintf(file, "%s,%d,%04hX,%06X,%04hX,%04hX,%d,%d,%ld,%d,%02hX\n",
rdr->label, s->rc, s->caid, s->prid,
s->srvid, (uint16_t)s->chid, s->time_avg, s->ecm_count, s->last_received.time, s->fail_factor, s->ecmlen);
count++;
// if (count % 500 == 0) { //Saving stats is using too much cpu and causes high file load. so we need a break
// cs_readunlock(__func__, &rdr->lb_stat_lock);
// cs_sleepms(100);
// cs_readlock(__func__, &rdr->lb_stat_lock);
// }
}
cs_writeunlock(__func__, &rdr->lb_stat_lock);
rdr->lb_stat_busy = 0;
}
}
fclose(file);
cs_ftime(&te);
int64_t load_time = comp_timeb(&te, &ts);
cs_log("loadbalancer: statistic saved %d records to %s in %"PRId64" ms", count, fname, load_time);
}
void save_stat_to_file(int32_t thread)
{
stat_load_save = 0;
if(thread)
{ start_thread("save lb stats", (void *)&save_stat_to_file_thread, NULL, NULL, 1, 1); }
else
{ save_stat_to_file_thread(); }
}
/**
* fail_factor is multiplied to the reopen_time. This function increases the fail_factor
**/
static void inc_fail(READER_STAT *s)
{
if(s->fail_factor <= 0)
{ s->fail_factor = 1; }
else
{ s->fail_factor++; } // inc by one at the time
}
static READER_STAT *get_add_stat(struct s_reader *rdr, STAT_QUERY *q)
{
if (rdr->lb_stat_busy)
return NULL;
if(!rdr->lb_stat)
{
rdr->lb_stat = ll_create("lb_stat");
cs_lock_create(__func__, &rdr->lb_stat_lock, rdr->label, DEFAULT_LOCK_TIMEOUT);
}
cs_writelock(__func__, &rdr->lb_stat_lock);
READER_STAT *s = get_stat_lock(rdr, q, 0);
if(!s)
{
if(cs_malloc(&s, sizeof(READER_STAT)))
{
s->caid = q->caid;
s->prid = q->prid;
s->srvid = q->srvid;
s->chid = q->chid;
s->ecmlen = q->ecmlen;
s->time_avg = UNDEF_AVG_TIME; //dummy placeholder
s->rc = E_FOUND; //set to found--> do not change!
cs_ftime(&s->last_received);
s->fail_factor = 0;
s->ecm_count = 0;
ll_prepend(rdr->lb_stat, s);
}
}
cs_writeunlock(__func__, &rdr->lb_stat_lock);
return s;
}
static void housekeeping_stat(int32_t force);
static int32_t get_reopen_seconds(READER_STAT *s)
{
int32_t max = (INT_MAX / cfg.lb_reopen_seconds);
if(max > 9999) { max = 9999; }
if(s->fail_factor > max)
{ s->fail_factor = max; }
if(!s->fail_factor)
{ return cfg.lb_reopen_seconds; }
return s->fail_factor * cfg.lb_reopen_seconds;
}
/**
* Adds caid/prid/srvid/ecmlen to stat-list for reader ridx with time/rc
*/
static void add_stat(struct s_reader *rdr, ECM_REQUEST *er, int32_t ecm_time, int32_t rc, uint8_t rcEx)
{
//inc ecm_count if found, drop to 0 if not found:
// rc codes:
// 0 = found +
// 1 = cache1 #
// 2 = cache2 #
// 3 = cacheex #
// 4 = not found -
// 5 = timeout -
// 6 = sleeping #
// 7 = fake -
// 8 = invalid -
// 9 = corrupt #
// 10= no card #
// 11= expdate #
// 12= disabled #
// 13= stopped #
// 100= unhandled #
// + = adds statistic values
// # = ignored because of duplicate values, temporary failures or softblocks
// - = causes loadbalancer to block this reader for this caid/prov/sid
if(!rdr || !er || !cfg.lb_mode || !er->ecmlen || !er->client || rdr->lb_stat_busy)
{ return; }
struct s_client *cl = rdr->client;
if(!check_client(cl))
{ return; }
//IGNORE stats for fallback reader with lb_force_fallback parameter
if(chk_is_fixed_fallback(rdr, er) && rdr->lb_force_fallback)
{ return; }
//IGNORE fails for ratelimit check
if(rc == E_NOTFOUND && rcEx == E2_RATELIMIT)
{
#ifdef WITH_DEBUG
if((D_LB & cs_dblevel))
{
char buf[ECM_FMT_LEN];
format_ecm(er, buf, ECM_FMT_LEN);
cs_log_dbg(D_LB, "loadbalancer: NOT adding stat (blocking) for reader %s because fails ratelimit checks!", rdr->label);
}
#endif
return;
}
//IGNORE fails when reader has positive services defined in new lb_whitelist_services parameter! See ticket #3310,#3311
if(rc >= E_NOTFOUND && has_lb_srvid(cl, er))
{
#ifdef WITH_DEBUG
if((D_LB & cs_dblevel))
{
char buf[ECM_FMT_LEN];
format_ecm(er, buf, ECM_FMT_LEN);
cs_log_dbg(D_LB, "loadbalancer: NOT adding stat (blocking) for reader %s because has positive srvid: rc %d %s time %d ms",
rdr->label, rc, buf, ecm_time);
}
#endif
return;
}
//IGNORE fails for sleep CMD08
if(rc == E_NOTFOUND && rdr->client->stopped==2)
{
#ifdef WITH_DEBUG
if((D_LB & cs_dblevel))
{
char buf[ECM_FMT_LEN];
format_ecm(er, buf, ECM_FMT_LEN);
cs_log_dbg(D_LB, "loadbalancer: NOT adding stat (no block) for reader %s because CMD08 sleep command!", rdr->label);
}
#endif
return;
}
//IGNORE timeouts on local readers (they could be busy handling an emm or entitlement refresh)
if(rc == E_TIMEOUT && !is_network_reader(rdr))
{
#ifdef WITH_DEBUG
if((D_LB & cs_dblevel))
{
cs_log_dbg(D_LB, "loadbalancer: NOT adding stat (no block) for reader %s because timeout on local reader", rdr->label);
}
#endif
return;
}
//IGNORE unhandled ecmresponses
if(rc == E_UNHANDLED)
{
#ifdef WITH_DEBUG
if((D_LB & cs_dblevel))
{
cs_log_dbg(D_LB, "loadbalancer: NOT adding stat (no block) for reader %s because unhandled reponse", rdr->label);
}
#endif
return;
}
//ignore too old ecms
if((uint32_t)ecm_time >= 3 * cfg.ctimeout)
{ return; }
STAT_QUERY q;
get_stat_query(er, &q);
READER_STAT *s;
s = get_add_stat(rdr, &q);
if (!s) return;
struct timeb now;
cs_ftime(&now);
cs_ftime(&s->last_received);
if(rc == E_FOUND) //found
{
s->rc = E_FOUND;
s->ecm_count++;
s->fail_factor = 0;
//FASTEST READER:
s->time_idx++;
if(s->time_idx >= LB_MAX_STAT_TIME)
{ s->time_idx = 0; }
s->time_stat[s->time_idx] = ecm_time;
calc_stat(s);
//OLDEST READER now set by get best reader!
//USAGELEVEL:
/* Assign a value to rdr->lb_usagelevel_ecmcount,
because no determined value was assigned before. */
if(rdr->lb_usagelevel_ecmcount < 0)
{ rdr->lb_usagelevel_ecmcount = 0; }
rdr->lb_usagelevel_ecmcount++; /* ecm is found so counter should increase */
if((rdr->lb_usagelevel_ecmcount % cfg.lb_min_ecmcount) == 0) //update every MIN_ECM_COUNT usagelevel:
{
int64_t t = comp_timeb(&now, &rdr->lb_usagelevel_time) / 1000;
rdr->lb_usagelevel = cfg.lb_min_ecmcount * 1000 / (t < 1 ? 1 : t);
/* Reset of usagelevel time and counter */
rdr->lb_usagelevel_time = now;
rdr->lb_usagelevel_ecmcount = 0;
}
}
else if(rc == E_NOTFOUND || rc == E_TIMEOUT || rc == E_FAKE) //not found / timeout /fake
{
inc_fail(s);
s->rc = rc;
}
else if(rc == E_INVALID) //invalid
{
s->rc = rc;
}
else
{
#ifdef WITH_DEBUG
if(rc >= E_FOUND && (D_LB & cs_dblevel))
{
char buf[ECM_FMT_LEN];
format_ecm(er, buf, ECM_FMT_LEN);
cs_log_dbg(D_LB, "loadbalancer: not handled stat for reader %s: rc %d %s time %d ms",
rdr->label, rc, buf, ecm_time);
}
#endif
return;
}
housekeeping_stat(0);
#ifdef WITH_DEBUG
if(D_LB & cs_dblevel)
{
char buf[ECM_FMT_LEN];
format_ecm(er, buf, ECM_FMT_LEN);
cs_log_dbg(D_LB, "loadbalancer: adding stat for reader %s: rc %d %s time %d ms fail %d",
rdr->label, rc, buf, ecm_time, s->fail_factor);
}
#endif
if(cfg.lb_save)
{
stat_load_save++;
if(stat_load_save > cfg.lb_save)
{ save_stat_to_file(1); }
}
}
int32_t clean_stat_by_rc(struct s_reader *rdr, int8_t rc, int8_t inverse)
{
int32_t count = 0;
if(rdr && rdr->lb_stat)
{
if (rdr->lb_stat_busy) return 0;
rdr->lb_stat_busy = 1;
cs_writelock(__func__, &rdr->lb_stat_lock);
READER_STAT *s;
LL_ITER itr = ll_iter_create(rdr->lb_stat);
while((s = ll_iter_next(&itr)))
{
if((!inverse && s->rc == rc) || (inverse && s->rc != rc))
{
ll_iter_remove_data(&itr);
count++;
}
}
cs_writeunlock(__func__, &rdr->lb_stat_lock);
rdr->lb_stat_busy = 0;
}
return count;
}
int32_t clean_all_stats_by_rc(int8_t rc, int8_t inverse)
{
int32_t count = 0;
LL_ITER itr = ll_iter_create(configured_readers);
struct s_reader *rdr;
while((rdr = ll_iter_next(&itr)))
{
count += clean_stat_by_rc(rdr, rc, inverse);
}
save_stat_to_file(0);
return count;
}
int32_t clean_stat_by_id(struct s_reader *rdr, uint16_t caid, uint32_t prid, uint16_t srvid, uint16_t chid, uint16_t ecmlen)
{
int32_t count = 0;
if(rdr && rdr->lb_stat)
{
if (rdr->lb_stat_busy) return 0;
rdr->lb_stat_busy = 1;
cs_writelock(__func__, &rdr->lb_stat_lock);
READER_STAT *s;
LL_ITER itr = ll_iter_create(rdr->lb_stat);
while((s = ll_iter_next(&itr)))
{
if(s->caid == caid &&
s->prid == prid &&
s->srvid == srvid &&
s->chid == chid &&
s->ecmlen == ecmlen)
{
ll_iter_remove_data(&itr);
count++;
break; // because the entry should unique we can left here
}
}
cs_writeunlock(__func__, &rdr->lb_stat_lock);
rdr->lb_stat_busy = 0;
}
return count;
}
/*
static int32_t has_ident(FTAB *ftab, ECM_REQUEST *er) {
if (!ftab || !ftab->filts)
return 0;
int32_t j, k;
for (j = 0; j < ftab->nfilts; j++) {
if (ftab->filts[j].caid) {
if (ftab->filts[j].caid==er->caid) { //caid matches!
int32_t nprids = ftab->filts[j].nprids;
if (!nprids) // No Provider ->Ok
return 1;
for (k = 0; k < nprids; k++) {
uint32_t prid = ftab->filts[j].prids[k];
if (prid == er->prid) { //Provider matches
return 1;
}
}
}
}
}
return 0; //No match!
}*/
static int32_t get_retrylimit(ECM_REQUEST *er)
{
return caidvaluetab_get_value(&cfg.lb_retrylimittab, er->caid, cfg.lb_retrylimit);
}
static int32_t get_nfb_readers(ECM_REQUEST *er)
{
int32_t nfb_readers = er->client->account->lb_nfb_readers == -1 ? cfg.lb_nfb_readers : er->client->account->lb_nfb_readers;
if(nfb_readers <= 0) { nfb_readers = 1; }
return nfb_readers;
}
static int32_t get_nbest_readers(ECM_REQUEST *er)
{
int32_t nbest_readers = er->client->account->lb_nbest_readers == -1 ? cfg.lb_nbest_readers : er->client->account->lb_nbest_readers;
CAIDVALUETAB *nbest_readers_tab = er->client->account->lb_nbest_readers_tab.cvnum == 0 ? &cfg.lb_nbest_readers_tab : &er->client->account->lb_nbest_readers_tab;
if(nbest_readers <= 0) { nbest_readers = 1; }
return caidvaluetab_get_value(nbest_readers_tab, er->caid, nbest_readers);
}
static void convert_to_beta_int(ECM_REQUEST *er, uint16_t caid_to)
{
unsigned char md5tmp[MD5_DIGEST_LENGTH];
convert_to_beta(er->client, er, caid_to);
// update ecmd5 for store ECM in cache
memcpy(er->ecmd5, MD5(er->ecm + 13, er->ecmlen - 13, md5tmp), CS_ECMSTORESIZE);
cacheex_update_hash(er);
er->btun = 2; //marked as auto-betatunnel converted. Also for fixing recursive lock in get_cw
}
static void convert_to_nagra_int(ECM_REQUEST *er, uint16_t caid_to)
{
unsigned char md5tmp[MD5_DIGEST_LENGTH];
convert_to_nagra(er->client, er, caid_to);
// update ecmd5 for store ECM in cache
memcpy(er->ecmd5, MD5(er->ecm + 3, er->ecmlen - 3, md5tmp), CS_ECMSTORESIZE);
cacheex_update_hash(er);
er->btun = 2; //marked as auto-betatunnel converted. Also for fixing recursive lock in get_cw
}
static int32_t lb_valid_btun(ECM_REQUEST *er, uint16_t caidto)
{
STAT_QUERY q;
READER_STAT *s;
struct s_reader *rdr;
get_stat_query(er, &q);
q.caid = caidto;
cs_readlock(__func__, &readerlist_lock);
for(rdr = first_active_reader; rdr ; rdr = rdr->next)
{
if(rdr->lb_stat && rdr->client)
{
s = get_stat(rdr, &q);
if(s && s->rc == E_FOUND)
{
cs_readunlock(__func__, &readerlist_lock);
return 1;
}
}
}
cs_readunlock(__func__, &readerlist_lock);
return 0;
}
static uint16_t __lb_get_betatunnel_caid_to(uint16_t caid)
{
int32_t lbbm = cfg.lb_auto_betatunnel_mode;
if(lbbm <= 3)
{
if(caid == 0x1801) { return 0x1722; }
if(caid == 0x1833) { return 0x1702; }
if(caid == 0x1834) { return 0x1722; }
if(caid == 0x1835) { return 0x1722; }
}
if(lbbm >= 1)
{
if(caid == 0x1702) { return 0x1833; }
}
if(lbbm == 1 || lbbm == 4)
{
if(caid == 0x1722) { return 0x1801; }
}
else if(lbbm == 2 || lbbm == 5)
{
if(caid == 0x1722) { return 0x1834; }
}
else if(lbbm == 3 || lbbm == 6)
{
if(caid == 0x1722) { return 0x1835; }
}
return 0;
}
uint16_t lb_get_betatunnel_caid_to(ECM_REQUEST *er)
{
if(!cfg.lb_auto_betatunnel)
return 0;
uint16_t caidto = __lb_get_betatunnel_caid_to(er->caid);
if(lb_valid_btun(er, caidto))
return caidto;
return 0;
}
void check_lb_auto_betatunnel_mode(ECM_REQUEST *er)
{
int32_t lbbm = cfg.lb_auto_betatunnel_mode;
if(lbbm == 1 || lbbm == 4)
{
er->caid = 0x1801;
}
else if(lbbm == 2 || lbbm == 5)
{
er->caid = 0x1834;
}
else if(lbbm == 3 || lbbm == 6)
{
er->caid = 0x1835;
}
////no other way to autodetect is 1801,1834 or 1835
}
uint16_t get_rdr_caid(struct s_reader *rdr)
{
if(is_network_reader(rdr))
{
return 0; //reader caid is not real caid
}
else
{
return rdr->caid;
}
}
static void reset_ecmcount_reader(READER_STAT *s, struct s_reader *rdr)
{
cs_readlock(__func__, &rdr->lb_stat_lock);
if(rdr->lb_stat && rdr->client)
{
if(s)
{
s->ecm_count = 0;
}
}
cs_readunlock(__func__, &rdr->lb_stat_lock);
}
static void reset_avgtime_reader(READER_STAT *s, struct s_reader *rdr)
{
cs_readlock(__func__, &rdr->lb_stat_lock);
if(rdr->lb_stat && rdr->client)
{
if(!s) { return; }
int32_t i;
for(i = 0; i < LB_MAX_STAT_TIME; i++)
{
if(s->time_stat[i] > 0) { s->time_stat[i] = 0; }
}
s->time_avg = UNDEF_AVG_TIME;
}
cs_readunlock(__func__, &rdr->lb_stat_lock);
}
/* force_reopen=1 -> force opening of block readers
* force_reopen=0 -> no force opening of block readers, use reopen_seconds
*/
static void try_open_blocked_readers(ECM_REQUEST *er, STAT_QUERY *q, int32_t *max_reopen, int32_t *force_reopen)
{
struct s_ecm_answer *ea;
READER_STAT *s;
struct s_reader *rdr;
for(ea = er->matching_rdr; ea; ea = ea->next)
{
if((ea->status & READER_FALLBACK) || (ea->status & READER_ACTIVE)) { continue; }
rdr = ea->reader;
s = get_stat(rdr, q);
if(!s) { continue; }
if(!cfg.lb_reopen_invalid && s->rc == E_INVALID){
cs_log_dbg(D_LB, "loadbalancer: reader %s blocked because INVALID sent! It will be blocked until stats cleaned!", rdr->label);
continue;
}
//if force_reopen we must active the "valid" reader
if(s->rc != E_FOUND && (*force_reopen) && cfg.lb_force_reopen_always)
{
cs_log_dbg(D_LB, "loadbalancer: force opening reader %s and reset fail_factor! --> ACTIVE", rdr->label);
ea->status |= READER_ACTIVE;
s->fail_factor = 0;
continue;
}
//active readers reach get_reopen_seconds(s)
struct timeb now;
cs_ftime(&now);
int64_t gone = comp_timeb(&now, &s->last_received);
int32_t reopenseconds = get_reopen_seconds(s);
if(s->rc != E_FOUND && gone > reopenseconds*1000 )
{
if(*max_reopen)
{
cs_log_dbg(D_LB, "loadbalancer: reader %s reaches %d seconds for reopening (fail_factor %d) --> ACTIVE", rdr->label, reopenseconds, s->fail_factor);
ea->status |= READER_ACTIVE;
(*max_reopen)--;
}
else
{
cs_log_dbg(D_LB, "loadbalancer: reader %s reaches %d seconds for reopening (fail_factor %d), but max_reopen reached!", rdr->label, reopenseconds, s->fail_factor);
}
continue;
}
if(s->rc != E_FOUND) //for debug output
{
cs_log_dbg(D_LB, "loadbalancer: reader %s blocked for %d seconds (fail_factor %d), retrying in %d seconds", rdr->label, get_reopen_seconds(s), s->fail_factor, (uint) (reopenseconds - (gone/1000)));
continue;
}
if(s->rc == E_FOUND) //for debug output
{ cs_log_dbg(D_LB, "loadbalancer: reader %s \"e_found\" but not selected for lbvalue check", rdr->label); }
}
}
/**
* Gets best reader for caid/prid/srvid/ecmlen.
* Best reader is evaluated by lowest avg time but only if ecm_count > cfg.lb_min_ecmcount (5)
* Also the reader is asked if he is "available"
* returns ridx when found or -1 when not found
*/
void stat_get_best_reader(ECM_REQUEST *er)
{