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MINOR: mux-h1: count open connections/streams on stats 

Implement as a gauge h1 counters for currently open connections and
streams. The counters are decremented when closing the stream or the
connection.
This commit is contained in:
Christopher Faulet 2021-11-26 18:10:39 +01:00
parent 563c345f6f
commit 60fa051e71
1 changed files with 22 additions and 0 deletions
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22
src/mux_h1.c
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@ -266,18 +266,30 @@ INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE);
/* h1 stats module */
enum {
H1_ST_OPEN_CONN,
H1_ST_OPEN_STREAM,
H1_STATS_COUNT /* must be the last member of the enum */
};
static struct name_desc h1_stats[] = {
[H1_ST_OPEN_CONN] = { .name = "h1_open_connections",
.desc = "Count of currently open connections" },
[H1_ST_OPEN_STREAM] = { .name = "h1_open_streams",
.desc = "Count of currently open streams" },
};
static struct h1_counters {
long long open_conns; /* count of currently open connections */
long long open_streams; /* count of currently open streams */
} h1_counters;
static void h1_fill_stats(void *data, struct field *stats)
{
struct h1_counters *counters = data;
stats[H1_ST_OPEN_CONN] = mkf_u64(FN_GAUGE, counters->open_conns);
stats[H1_ST_OPEN_STREAM] = mkf_u64(FN_GAUGE, counters->open_streams);
}
static struct stats_module h1_stats_module = {
@ -644,6 +656,8 @@ static struct conn_stream *h1s_new_cs(struct h1s *h1s, struct buffer *input)
goto err;
}
HA_ATOMIC_INC(&h1s->h1c->px_counters->open_streams);
h1s->h1c->flags = (h1s->h1c->flags & ~H1C_F_ST_EMBRYONIC) | H1C_F_ST_ATTACHED | H1C_F_ST_READY;
TRACE_LEAVE(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
return cs;
@ -760,6 +774,8 @@ static struct h1s *h1c_bck_stream_new(struct h1c *h1c, struct conn_stream *cs, s
if (h1c->px->options2 & PR_O2_RSPBUG_OK)
h1s->res.err_pos = -1;
HA_ATOMIC_INC(&h1c->px_counters->open_streams);
TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
return h1s;
@ -801,6 +817,8 @@ static void h1s_destroy(struct h1s *h1s)
TRACE_STATE("set shudown on h1c", H1_EV_H1S_END, h1c->conn, h1s);
h1c->flags |= H1C_F_ST_SHUTDOWN;
}
HA_ATOMIC_DEC(&h1c->px_counters->open_streams);
pool_free(pool_head_h1s, h1s);
}
}
@ -914,6 +932,8 @@ static int h1_init(struct connection *conn, struct proxy *proxy, struct session
else if (h1_recv_allowed(h1c))
h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
HA_ATOMIC_INC(&h1c->px_counters->open_conns);
/* mux->wake will be called soon to complete the operation */
TRACE_LEAVE(H1_EV_H1C_NEW, conn, h1c->h1s);
return 0;
@ -983,6 +1003,8 @@ static void h1_release(struct h1c *h1c)
&h1c->wait_event);
h1_shutw_conn(conn);
}
HA_ATOMIC_DEC(&h1c->px_counters->open_conns);
pool_free(pool_head_h1c, h1c);
}