static int spontaneous_flush_periods=100000;
static int max_separated_periods=2000;
static int need_activity_periods=1000;
+static int lowvol_thresh=3;
+static int lowvol_periods=1000;
static double max_bad_data_ratio= 1; /* conv'd from percentage by main */
static int max_bad_data_initial= 30;
static char *path_lock, *path_flushing, *path_defer, *path_dump;
static char *globpat_backlog;
static pid_t self_pid;
+static int *lowvol_perperiod;
+static int lowvol_circptr;
+static int lowvol_total;
/* statemc_init initialises */
static StateMachineState sms;
/*========== management of connections ==========*/
+static void reconnect_blocking_event(void) {
+ until_connect= reconnect_delay_periods;
+}
+
static void conn_closefd(Conn *conn, const char *msgprefix) {
int r= close_perhaps(&conn->fd);
if (r) info("C%d %serror closing socket: %s",
conn->fd, msgprefix, strerror(errno));
}
+static int conn_busy(Conn *conn) {
+ return
+ conn->waiting.count ||
+ conn->priority.count ||
+ conn->sent.count ||
+ conn->xmitu;
+}
+
static void conn_dispose(Conn *conn) {
if (!conn) return;
if (conn->rd) {
}
conn_closefd(conn,"");
free(conn);
- until_connect= reconnect_delay_periods;
}
static void *conn_exception(oop_source *lp, int fd,
conn->fd, conns.count, RCI_TRIPLE_VALS_BASE(requeue, /*nothing*/), m);
free(m);
+ reconnect_blocking_event();
conn_dispose(conn);
check_assign_articles();
}
va_end(al);
}
+static void conn_idle_close(Conn *conn, const char *why) {
+ static const char quitcmd[]= "QUIT\r\n";
+ int todo= sizeof(quitcmd)-1;
+ const char *p= quitcmd;
+ for (;;) {
+ int r= write(conn->fd, p, todo);
+ if (r<0) {
+ if (isewouldblock(errno))
+ connfail(conn, "blocked writing QUIT to idle connection");
+ else
+ connfail(conn, "failed to write QUIT to idle connection: %s",
+ strerror(errno));
+ break;
+ }
+ assert(r<=todo);
+ todo -= r;
+ if (!todo) {
+ conn->quitting= 1;
+ conn->since_activity= 0;
+ debug("C%d is idle (%s), quitting", conn->fd, why);
+ break;
+ }
+ }
+}
+
+/*
+ * For our last connection, we also shut it down if we have had
+ * less than K in the last L
+ */
static void check_idle_conns(void) {
Conn *conn;
+
+ int verylowvol= lowvol_perperiod[lowvol_circptr];
+ lowvol_circptr++;
+ lowvol_circptr %= lowvol_periods;
+ lowvol_total -= lowvol_perperiod[lowvol_circptr];
+ lowvol_perperiod[lowvol_circptr]= 0;
+
FOR_CONN(conn)
conn->since_activity++;
+
search_again:
FOR_CONN(conn) {
if (conn->since_activity <= need_activity_periods) continue;
else if (conn->xmitu)
connfail(conn,"peer has been sending responses"
" before receiving our commands!");
- else {
- static const char quitcmd[]= "QUIT\r\n";
- int todo= sizeof(quitcmd)-1;
- const char *p= quitcmd;
- for (;;) {
- int r= write(conn->fd, p, todo);
- if (r<0) {
- if (isewouldblock(errno))
- connfail(conn, "blocked writing QUIT to idle connection");
- else
- connfail(conn, "failed to write QUIT to idle connection: %s",
- strerror(errno));
- break;
- }
- assert(r<=todo);
- todo -= r;
- if (!todo) {
- conn->quitting= 1;
- conn->since_activity= 0;
- debug("C%d is idle, quitting", conn->fd);
- break;
- }
- }
- }
+ else
+ conn_idle_close(conn, "no activity");
+
goto search_again;
}
+
+ conn= LIST_HEAD(conns);
+ if (!verylowvol &&
+ conns.count==1 &&
+ lowvol_total+verylowvol < lowvol_thresh &&
+ !conn_busy(conn))
+ conn_idle_close(conn, "low volume");
}
/*---------- making new connections ----------*/
x:
conn_dispose(conn);
connect_attempt_discard();
+ reconnect_blocking_event();
return OOP_CONTINUE;
}
assert(!connecting_fdpass_sock);
info("starting connection attempt");
+ int ok_reconnect_delay_periods= reconnect_delay_periods;
+ reconnect_blocking_event();
int socks[2];
int r= socketpair(AF_UNIX, SOCK_STREAM, 0, socks);
connecting_fdpass_sock= socks[0];
xsetnonblock(connecting_fdpass_sock, 1);
on_fd_read_except(connecting_fdpass_sock, connchild_event);
+
+ if (!conns.count)
+ reconnect_delay_periods= ok_reconnect_delay_periods;
}
/*---------- assigning articles to conns, and transmitting ----------*/
Article *art= dequeue(0);
if (!art) break;
LIST_ADDTAIL(use->waiting, art);
+ lowvol_perperiod[lowvol_circptr]++;
spare--;
}
conn_maybe_write(use);
} else if (allow_connect_start()) {
- until_connect= reconnect_delay_periods;
connect_start();
break;
} else {
return OOP_CONTINUE;
}
- int conn_busy=
- conn->waiting.count ||
- conn->priority.count ||
- conn->sent.count ||
- conn->xmitu;
+ int busy= conn_busy(conn);
if (conn->quitting) {
- if (code!=205 && code!=503) {
+ if (code!=205 && code!=400) {
connfail(conn, "peer gave unexpected response to QUIT: %s", sani);
} else {
LIST_REMOVE(conns,conn);
notice("C%d (now %d) idle connection closed by us",
conn->fd, conns.count);
- assert(!conn_busy);
+ assert(!busy);
conn_dispose(conn);
}
return OOP_CONTINUE;
default: PEERBADMSG("peer sent unexpected message");
case 400:
- if (conn_busy)
+ if (busy)
PEERBADMSG("peer timed us out or stopped accepting articles");
LIST_REMOVE(conns,conn);
{0,"max-flush-interval", "PERIOD", &spontaneous_flush_periods,op_seconds },
{0,"flush-finish-timeout", "PERIOD", &max_separated_periods, op_seconds },
{0,"idle-timeout", "PERIOD", &need_activity_periods, op_seconds },
+{0,"low-volume-thresh", "PERIOD", &lowvol_thresh, op_integer },
+{0,"low-volume-window", "PERIOD", &lowvol_periods, op_seconds },
{0,"max-bad-input-data-ratio","PERCENT", &max_bad_data_ratio, op_double },
{0,"max-bad-input-data-init", "PERCENT", &max_bad_data_initial, op_integer },
convert_to_periods_rndup(&spontaneous_flush_periods);
convert_to_periods_rndup(&max_separated_periods);
convert_to_periods_rndup(&need_activity_periods);
+ convert_to_periods_rndup(&lowvol_periods);
if (max_bad_data_ratio < 0 || max_bad_data_ratio > 100)
badusage("bad input data ratio must be between 0..100");
if (strchr(feedfile, c))
badusage("feed filename may not contain metacharacter %c",c);
+ int i;
+ lowvol_perperiod= xcalloc(sizeof(*lowvol_perperiod), lowvol_periods);
+ for (i=0; i<lowvol_periods; i++) {
+ lowvol_perperiod[i]= lowvol_thresh;
+ lowvol_total += lowvol_thresh;
+ }
+
/* set things up */
path_lock= xasprintf("%s_lock", feedfile);
~ian / innduct.git / blobdiff