void
req_server_enqueue_imsgq(struct context *ctx, struct conn *conn, struct msg *msg)
{
ASSERT(msg->request);
ASSERT((!conn->client && !conn->proxy) || (!conn->dnode_client && !conn->dnode_server));
/*
* timeout clock starts ticking the instant the message is enqueued into
* the server in_q; the clock continues to tick until it either expires
* or the message is dequeued from the server out_q
*
* noreply request are free from timeouts because client is not interested
* in the reponse anyway!
*/
if (!msg->noreply) {
msg_tmo_insert(msg, conn);
}
TAILQ_INSERT_TAIL(&conn->imsg_q, msg, s_tqe);
if (!conn->dyn_mode) {
stats_server_incr(ctx, conn->owner, in_queue);
stats_server_incr_by(ctx, conn->owner, in_queue_bytes, msg->mlen);
} else {
struct server_pool *pool = (struct server_pool *) array_get(&ctx->pool, 0);
stats_pool_incr(ctx, pool, peer_in_queue);
stats_pool_incr_by(ctx, pool, peer_in_queue_bytes, msg->mlen);
}
}
void
req_server_enqueue_imsgq_head(struct context *ctx, struct conn *conn, struct msg *msg)
{
ASSERT(msg->request);
ASSERT(!conn->client && !conn->proxy);
/*
* timeout clock starts ticking the instant the message is enqueued into
* the server in_q; the clock continues to tick until it either expires
* or the message is dequeued from the server out_q
*
* noreply request are free from timeouts because client is not intrested
* in the reponse anyway!
*/
if (!msg->noreply) {
msg_tmo_insert(msg, conn);
}
TAILQ_INSERT_HEAD(&conn->imsg_q, msg, s_tqe);
stats_server_incr(ctx, conn->owner, in_queue);
stats_server_incr_by(ctx, conn->owner, in_queue_bytes, msg->mlen);
}
//接收的客户端msg信息通过req_server_enqueue_imsgq添加到该队列 在req_send_next中发往后端真实服务器
//msg数据添加到conn->imsg_q队列入队，在req_send_next中发往后端真实服务器
void //req_server_enqueue_imsgq添加到队列尾部，req_server_enqueue_imsgq_head添加到队列头部
req_server_enqueue_imsgq(struct context *ctx, struct conn *conn, struct msg *msg)
{//req_forward中执行 req_forward->req_server_enqueue_imsgq
ASSERT(msg->request);
ASSERT(!conn->client && !conn->proxy);
/*
* timeout clock starts ticking the instant the message is enqueued into
* the server in_q; the clock continues to tick until it either expires
* or the message is dequeued from the server out_q
*
* noreply request are free from timeouts because client is not intrested
* in the response anyway!
*/
if (!msg->noreply) { //该msg需要得到应答，添加到红黑树超时定时器
//该定时器在core_timeout中删除
msg_tmo_insert(msg, conn); //添加到tmo_rbt 该msg需要发往后端真实服务器，并且需要等待对方应答
}
TAILQ_INSERT_TAIL(&conn->imsg_q, msg, s_tqe);//在core_core中的写事件把imsg_q中的msg发送出去
stats_server_incr(ctx, conn->owner, in_queue);
stats_server_incr_by(ctx, conn->owner, in_queue_bytes, msg->mlen);
}
