rstatus_t
dnode_peer_replace(void *rmsg)
{
//rstatus_t status;
struct ring_msg *msg = rmsg;
struct server_pool *sp = msg->sp;
struct node *node = array_get(&msg->nodes, 0);
log_debug(LOG_VVERB, "dyn: peer has a replaced message '%.*s'", node->name.len, node->name.data);
struct array *peers = &sp->peers;
struct server *s = NULL;
uint32_t i,nelem;
//bool node_exist = false;
//TODOs: use hash table here
for (i=1, nelem = array_n(peers); i< nelem; i++) {
struct server * peer = (struct server *) array_get(peers, i);
if (string_compare(&peer->rack, &node->rack) == 0) {
//TODOs: now only compare 1st token and support vnode later - use hash string on a tokens for comparison
struct dyn_token *ptoken = (struct dyn_token *) array_get(&peer->tokens, 0);
struct dyn_token *ntoken = &node->token;
if (cmp_dyn_token(ptoken, ntoken) == 0) {
s = peer; //found a node to replace
}
}
}
if (s != NULL) {
log_debug(LOG_INFO, "Found an old node to replace '%.*s'", s->name.len, s->name.data);
log_debug(LOG_INFO, "Replace with address '%.*s'", node->name.len, node->name.data);
string_deinit(&s->pname);
string_deinit(&s->name);
string_copy(&s->pname, node->pname.data, node->pname.len);
string_copy(&s->name, node->name.data, node->name.len);
//TODOs: need to free the previous s->addr?
//if (s->addr != NULL) {
// dn_free(s->addr);
//}
struct sockinfo *info = dn_alloc(sizeof(*info)); //need to free this
dn_resolve(&s->name, s->port, info);
s->family = info->family;
s->addrlen = info->addrlen;
s->addr = (struct sockaddr *)&info->addr; //TODOs: fix this by copying, not reference
dnode_peer_each_disconnect(s, NULL);
dnode_peer_each_preconnect(s, NULL);
} else {
log_debug(LOG_INFO, "Unable to find any node matched the token");
}
return DN_OK;
}
static int
dict_node_key_compare(void *privdata, const void *key1, const void *key2)
{
DICT_NOTUSED(privdata);
const struct gossip_node *node1 = key1;
const struct gossip_node *node2 = key2;
ASSERT(node1 == NULL || node2 == NULL);
return (string_compare(&node1->dc, &node2->dc) == 0) &&
(string_compare(&node1->rack, &node2->rack) == 0) &&
(cmp_dyn_token(&node1->token, &node2->token) == 0);
}
