void sender_poll_msgs(void* s) { sender_t* me = s; msg_t* m; while ((m = llqueue_poll(me->inbox))) { switch (m->type) { case RAFT_MSG_APPENDENTRIES: raft_recv_appendentries(me->raft, m->sender, m->data); break; case RAFT_MSG_APPENDENTRIES_RESPONSE: raft_recv_appendentries_response(me->raft, m->sender, m->data); break; case RAFT_MSG_REQUESTVOTE: raft_recv_requestvote(me->raft, m->sender, m->data); break; case RAFT_MSG_REQUESTVOTE_RESPONSE: raft_recv_requestvote_response(me->raft, m->sender, m->data); break; case RAFT_MSG_ENTRY: raft_recv_entry(me->raft, m->sender, m->data); break; case RAFT_MSG_ENTRY_RESPONSE: //raft_recv_entry_response(me->raft, m->sender, m->data); break; } } }
/** HTTP POST entry point for receiving entries from client * Provide the user with an ID */ static int __http_get_id(h2o_handler_t *self, h2o_req_t *req) { static h2o_generator_t generator = { NULL, NULL }; if (!h2o_memis(req->method.base, req->method.len, H2O_STRLIT("POST"))) return -1; /* redirect to leader if needed */ int leader = raft_get_current_leader(sv->raft); if (-1 == leader) { return h2oh_respond_with_error(req, 503, "Leader unavailable"); } else if (leader != sv->node_idx) { raft_node_t* node = raft_get_node(sv->raft, leader); peer_connection_t* leader_conn = raft_node_get_udata(node); char leader_url[LEADER_URL_LEN]; static h2o_generator_t generator = { NULL, NULL }; static h2o_iovec_t body = { .base = "", .len = 0 }; req->res.status = 301; req->res.reason = "Moved Permanently"; h2o_start_response(req, &generator); snprintf(leader_url, LEADER_URL_LEN, "http://%s:%d/", inet_ntoa(leader_conn->addr.sin_addr), leader_conn->http_port); h2o_add_header(&req->pool, &req->res.headers, H2O_TOKEN_LOCATION, leader_url, strlen(leader_url)); h2o_send(req, &body, 1, 1); return 0; } int e; unsigned int ticket = __generate_ticket(); msg_entry_t entry; entry.id = rand(); entry.data.buf = (void*)&ticket; entry.data.len = sizeof(ticket); uv_mutex_lock(&sv->raft_lock); msg_entry_response_t r; e = raft_recv_entry(sv->raft, sv->node_idx, &entry, &r); if (0 != e) return h2oh_respond_with_error(req, 500, "BAD"); /* block until the entry is committed */ int done = 0; do { uv_cond_wait(&sv->appendentries_received, &sv->raft_lock); e = raft_msg_entry_response_committed(sv->raft, &r); switch (e) { case 0: /* not committed yet */ break; case 1: done = 1; uv_mutex_unlock(&sv->raft_lock); break; case -1: uv_mutex_unlock(&sv->raft_lock); return h2oh_respond_with_error(req, 400, "TRY AGAIN"); } } while (!done); /* serialize ID */ char id_str[100]; h2o_iovec_t body; sprintf(id_str, "%d", entry.id); body = h2o_iovec_init(id_str, strlen(id_str)); req->res.status = 200; req->res.reason = "OK"; h2o_start_response(req, &generator); h2o_send(req, &body, 1, 1); return 0; }