VBUCKET_CONFIG_DIFF* vbucket_compare(VBUCKET_CONFIG_HANDLE from,
VBUCKET_CONFIG_HANDLE to) {
VBUCKET_CONFIG_DIFF *rv = calloc(1, sizeof(VBUCKET_CONFIG_DIFF));
int num_servers = (from->num_servers > to->num_servers
? from->num_servers : to->num_servers) + 1;
assert(rv);
rv->servers_added = calloc(num_servers, sizeof(char*));
rv->servers_removed = calloc(num_servers, sizeof(char*));
/* Compute the added and removed servers */
compute_vb_list_diff(from, to, rv->servers_added);
compute_vb_list_diff(to, from, rv->servers_removed);
/* Verify the servers are equal in their positions */
if (to->num_servers == from->num_servers) {
int i;
rv->sequence_changed = false;
for (i = 0; i < from->num_servers; i++) {
rv->sequence_changed |= (0 != strcmp(vbucket_config_get_server(from, i),
vbucket_config_get_server(to, i)));
}
} else {
/* Just say yes */
rv->sequence_changed = true;
}
/* Consider the sequence changed if the auth credentials changed */
if (from->user != NULL && to->user != NULL) {
rv->sequence_changed |= (strcmp(from->user, to->user) != 0);
} else {
rv->sequence_changed |= ((from->user != NULL) ^ (to->user != NULL));
}
if (from->password != NULL && to->password != NULL) {
rv->sequence_changed |= (strcmp(from->password, to->password) != 0);
} else {
rv->sequence_changed |= ((from->password != NULL) ^ (to->password != NULL));
}
/* Count the number of vbucket differences */
if (to->num_vbuckets == from->num_vbuckets) {
int i;
for (i = 0; i < to->num_vbuckets; i++) {
rv->n_vb_changes += (vbucket_get_master(from, i)
== vbucket_get_master(to, i)) ? 0 : 1;
}
} else {
rv->n_vb_changes = -1;
}
return rv;
}
lcbvb_CONFIGDIFF *
lcbvb_compare(lcbvb_CONFIG *from, lcbvb_CONFIG *to)
{
int nservers;
lcbvb_CONFIGDIFF *ret;
unsigned ii;
ret = calloc(1, sizeof(*ret));
nservers = (from->nsrv > to->nsrv ? from->nsrv : to->nsrv) + 1;
ret->servers_added = calloc(nservers, sizeof(*ret->servers_added));
ret->servers_removed = calloc(nservers, sizeof(*ret->servers_removed));
compute_vb_list_diff(from, to, ret->servers_added);
compute_vb_list_diff(to, from, ret->servers_removed);
if (to->nsrv == from->nsrv) {
for (ii = 0; ii < from->nsrv; ii++) {
const char *sa, *sb;
sa = from->servers[ii].authority;
sb = to->servers[ii].authority;
ret->sequence_changed |= (0 != strcmp(sa, sb));
}
} else {
ret->sequence_changed = 1;
}
if (from->nvb == to->nvb) {
for (ii = 0; ii < from->nvb; ii++) {
lcbvb_VBUCKET *vba = from->vbuckets + ii, *vbb = to->vbuckets + ii;
if (vba->servers[0] != vbb->servers[0]) {
ret->n_vb_changes++;
}
}
} else {
ret->n_vb_changes = -1;
}
return ret;
}
