static void
dnode_req_forward_error(struct context *ctx, struct conn *conn, struct msg *msg)
{
rstatus_t status;
ASSERT(conn->dnode_client && !conn->dnode_server);
log_debug(LOG_INFO, "dyn: forward req %"PRIu64" len %"PRIu32" type %d from "
"c %d failed: %s", msg->id, msg->mlen, msg->type, conn->sd,
strerror(errno));
msg->done = 1;
msg->error = 1;
msg->err = errno;
/* noreply request don't expect any response */
if (msg->noreply) {
dnode_req_put(msg);
return;
}
if (dnode_req_done(conn, TAILQ_FIRST(&conn->omsg_q))) {
status = event_add_out(ctx->evb, conn);
if (status != DN_OK) {
conn->err = errno;
}
}
}
/* Description: link data from a peer connection to a client-facing connection
* peer_conn: a peer connection
* msg : msg with data from the peer connection after parsing
*/
static void
dnode_rsp_forward(struct context *ctx, struct conn *peer_conn, struct msg *msg)
{
rstatus_t status;
struct msg *pmsg;
struct conn *c_conn;
log_debug(LOG_VERB, "dnode_rsp_forward entering ...");
ASSERT(!peer_conn->dnode_client && !peer_conn->dnode_server);
/* response from a peer implies that peer is ok and heartbeating */
dnode_peer_ok(ctx, peer_conn);
/* dequeue peer message (request) from peer conn */
pmsg = TAILQ_FIRST(&peer_conn->omsg_q);
ASSERT(pmsg != NULL && pmsg->peer == NULL);
ASSERT(pmsg->request && !pmsg->done);
if (TRACING_LEVEL >= LOG_VVERB) {
loga("Dumping content for msg: ");
msg_dump(msg);
loga("msg id %d", msg->id);
loga("Dumping content for pmsg :");
msg_dump(pmsg);
loga("pmsg id %d", pmsg->id);
}
peer_conn->dequeue_outq(ctx, peer_conn, pmsg);
pmsg->done = 1;
/* establish msg <-> pmsg (response <-> request) link */
pmsg->peer = msg;
msg->peer = pmsg;
msg->pre_coalesce(msg);
c_conn = pmsg->owner;
ASSERT(c_conn->client && !c_conn->proxy);
if (TAILQ_FIRST(&c_conn->omsg_q) != NULL && dnode_req_done(c_conn, TAILQ_FIRST(&c_conn->omsg_q))) {
status = event_add_out(ctx->evb, c_conn);
if (status != DN_OK) {
c_conn->err = errno;
}
}
dnode_rsp_forward_stats(ctx, peer_conn->owner, msg);
}
bool
dnode_req_error(struct conn *conn, struct msg *msg)
{
ASSERT(msg->request && dnode_req_done(conn, msg));
return req_error(conn, msg);
}
/* Description: link data from a peer connection to a client-facing connection
* peer_conn: a peer connection
* msg : msg with data from the peer connection after parsing
*/
static void
dnode_rsp_forward_match(struct context *ctx, struct conn *peer_conn, struct msg *rsp)
{
rstatus_t status;
struct msg *req;
struct conn *c_conn;
req = TAILQ_FIRST(&peer_conn->omsg_q);
c_conn = req->owner;
/* if client consistency is dc_one forward the response from only the
local node. Since dyn_dnode_peer is always a remote node, drop the rsp */
if (req->consistency == DC_ONE) {
if (req->swallow) {
dnode_rsp_swallow(ctx, peer_conn, req, rsp);
return;
}
log_warn("req %d:%d with DC_ONE consistency is not being swallowed");
}
/* if client consistency is dc_quorum, forward the response from only the
local region/DC. */
if ((req->consistency == DC_QUORUM) && !peer_conn->same_dc) {
if (req->swallow) {
dnode_rsp_swallow(ctx, peer_conn, req, rsp);
return;
}
log_warn("req %d:%d with DC_QUORUM consistency is not being swallowed");
}
log_debug(LOG_DEBUG, "DNODE RSP RECEIVED %c %d dmsg->id %u req %u:%u rsp %u:%u, ",
peer_conn->dnode_client ? 'c' : (peer_conn->dnode_server ? 's' : 'p'),
peer_conn->sd, rsp->dmsg->id,
req->id, req->parent_id, rsp->id, rsp->parent_id);
ASSERT(req != NULL && req->peer == NULL);
ASSERT(req->request && !req->done);
if (log_loggable(LOG_VVERB)) {
loga("Dumping content for response: ");
msg_dump(rsp);
loga("rsp id %d", rsp->id);
loga("Dumping content for request:");
msg_dump(req);
loga("req id %d", req->id);
}
peer_conn->dequeue_outq(ctx, peer_conn, req);
req->done = 1;
log_debug(LOG_VERB, "%p <-> %p", req, rsp);
/* establish rsp <-> req (response <-> request) link */
req->peer = rsp;
rsp->peer = req;
rsp->pre_coalesce(rsp);
ASSERT((c_conn->client && !c_conn->proxy) || (c_conn->dnode_client && !c_conn->dnode_server));
dnode_rsp_forward_stats(ctx, peer_conn->owner, rsp);
if (TAILQ_FIRST(&c_conn->omsg_q) != NULL && dnode_req_done(c_conn, req)) {
log_debug(LOG_INFO, "handle rsp %d:%d for req %d:%d conn %p",
rsp->id, rsp->parent_id, req->id, req->parent_id, c_conn);
// c_conn owns respnse now
rstatus_t status = conn_handle_response(c_conn,
req->parent_id ? req->parent_id : req->id,
rsp);
if (req->swallow) {
log_debug(LOG_INFO, "swallow request %d:%d", req->id, req->parent_id);
req_put(req);
}
}
}