MINOR: peers: remove the pointer to the stream
There's no reason to use the stream anymore, only the appctx should be
used by a peer. This was a leftover from the migration to appctx and it
caused some confusion, so let's totally drop it now. Note that half of
the patch are just comment updates.
diff --git a/src/peers.c b/src/peers.c
index 6b8f7f9..1a80ab3 100644
--- a/src/peers.c
+++ b/src/peers.c
@@ -485,10 +485,9 @@
/* peer session identified */
if (peer) {
- if (peer->stream == s) {
+ if (peer->appctx == appctx) {
/* Re-init current table pointers to force announcement on re-connect */
peer->remote_table = peer->last_local_table = NULL;
- peer->stream = NULL;
peer->appctx = NULL;
if (peer->flags & PEER_F_LEARN_ASSIGN) {
/* unassign current peer for learning */
@@ -662,7 +661,7 @@
goto switchstate;
}
- if (curpeer->stream && curpeer->stream != s) {
+ if (curpeer->appctx && curpeer->appctx != appctx) {
if (curpeer->local) {
/* Local connection, reply a retry */
appctx->st0 = PEER_SESS_ST_EXIT;
@@ -679,7 +678,6 @@
curpeer->flags &= ~PEER_F_DWNGRD;
}
}
- curpeer->stream = s;
curpeer->appctx = appctx;
appctx->ctx.peers.ptr = curpeer;
appctx->st0 = PEER_SESS_ST_SENDSUCCESS;
@@ -1748,7 +1746,7 @@
/*
* Create a new peer session in assigned state (connect will start automatically)
*/
-static struct stream *peer_session_create(struct peers *peers, struct peer *peer)
+static struct appctx *peer_session_create(struct peers *peers, struct peer *peer)
{
struct listener *l = LIST_NEXT(&peers->peers_fe->conf.listeners, struct listener *, by_fe);
struct proxy *p = l->frontend; /* attached frontend */
@@ -1822,8 +1820,7 @@
totalconn++;
peer->appctx = appctx;
- peer->stream = s;
- return s;
+ return appctx;
/* Error unrolling */
out_free_strm:
@@ -1882,20 +1879,20 @@
for (ps = peers->remote; ps; ps = ps->next) {
/* For each remote peers */
if (!ps->local) {
- if (!ps->stream) {
- /* no active stream */
+ if (!ps->appctx) {
+ /* no active peer connection */
if (ps->statuscode == 0 ||
((ps->statuscode == PEER_SESS_SC_CONNECTCODE ||
ps->statuscode == PEER_SESS_SC_SUCCESSCODE ||
ps->statuscode == PEER_SESS_SC_CONNECTEDCODE) &&
tick_is_expired(ps->reconnect, now_ms))) {
/* connection never tried
- * or previous stream established with success
- * or previous stream failed during connection
+ * or previous peer connection established with success
+ * or previous peer connection failed while connecting
* and reconnection timer is expired */
/* retry a connect */
- ps->stream = peer_session_create(peers, ps);
+ ps->appctx = peer_session_create(peers, ps);
}
else if (!tick_is_expired(ps->reconnect, now_ms)) {
/* If previous session failed during connection
@@ -1905,9 +1902,9 @@
task->expire = tick_first(task->expire, ps->reconnect);
}
/* else do nothing */
- } /* !ps->stream */
+ } /* !ps->appctx */
else if (ps->statuscode == PEER_SESS_SC_SUCCESSCODE) {
- /* current stream is active and established */
+ /* current peer connection is active and established */
if (((peers->flags & PEERS_RESYNC_STATEMASK) == PEERS_RESYNC_FROMREMOTE) &&
!(peers->flags & PEERS_F_RESYNC_ASSIGN) &&
!(ps->flags & PEER_F_LEARN_NOTUP2DATE)) {
@@ -1919,14 +1916,14 @@
ps->flags |= PEER_F_LEARN_ASSIGN;
peers->flags |= PEERS_F_RESYNC_ASSIGN;
- /* awake peer stream task to handle a request of resync */
+ /* wake up peer handler to handle a request of resync */
appctx_wakeup(ps->appctx);
}
else {
/* Awake session if there is data to push */
for (st = ps->tables; st ; st = st->next) {
if ((int)(st->last_pushed - st->table->localupdate) < 0) {
- /* awake peer stream task to push local updates */
+ /* wake up the peer handler to push local updates */
appctx_wakeup(ps->appctx);
break;
}
@@ -1970,9 +1967,8 @@
/* disconnect all connected peers */
for (ps = peers->remote; ps; ps = ps->next) {
- if (ps->stream) {
+ if (ps->appctx) {
peer_session_forceshutdown(ps->appctx);
- ps->stream = NULL;
ps->appctx = NULL;
}
}
@@ -1988,15 +1984,15 @@
st->table->syncing--;
}
}
- else if (!ps->stream) {
- /* If stream is not active */
+ else if (!ps->appctx) {
+ /* If there's no active peer connection */
if (ps->statuscode == 0 ||
ps->statuscode == PEER_SESS_SC_SUCCESSCODE ||
ps->statuscode == PEER_SESS_SC_CONNECTEDCODE ||
ps->statuscode == PEER_SESS_SC_TRYAGAIN) {
/* connection never tried
- * or previous stream was successfully established
- * or previous stream tcp connect success but init state incomplete
+ * or previous peer connection was successfully established
+ * or previous tcp connect succeeded but init state incomplete
* or during previous connect, peer replies a try again statuscode */
/* connect to the peer */
@@ -2014,11 +2010,10 @@
}
}
else if (ps->statuscode == PEER_SESS_SC_SUCCESSCODE ) {
- /* current stream active and established
- awake stream to push remaining local updates */
+ /* current peer connection is active and established
+ * wake up all peer handlers to push remaining local updates */
for (st = ps->tables; st ; st = st->next) {
if ((int)(st->last_pushed - st->table->localupdate) < 0) {
- /* awake peer stream task to push local updates */
appctx_wakeup(ps->appctx);
break;
}