static GError *
__get_container_service2(struct sqlx_sqlite3_s *sq3,
struct oio_url_s *url, struct compound_type_s *ct,
struct meta1_backend_s *m1, enum m1v2_getsrv_e mode,
gchar ***result, gboolean *renewed)
{
GError *err = NULL;
struct meta1_service_url_s **used = NULL;
enum service_update_policy_e policy;
guint replicas;
struct service_update_policies_s *pol;
if (!(pol = meta1_backend_get_svcupdate(m1)))
return NEWERROR(CODE_POLICY_NOT_SATISFIABLE, "Bad NS/Policy pair");
policy = service_howto_update(pol, ct->baretype);
replicas = service_howmany_replicas(pol, ct->baretype);
replicas = (replicas > 0 ? replicas : 1);
// Patches the constraint on the service type (if not set in the request)
// by the constraint set in the NS-wide storage policy.
compound_type_update_arg(ct, pol, FALSE);
/* This special "tag" is used for services types that are to be linked
* to containers belonging to other services (e.g. there is a container
* for each rawx in the special "_RDIR" account). It tells the load
* balancer to compare the location of linked service against the
* location of the container owner. */
if (ct->req.k && !strcmp(ct->req.k, NAME_TAGNAME_USER_IS_SERVICE)
&& (!ct->req.v || !ct->req.v[0])) {
oio_str_replace(&(ct->req.v), oio_url_get(url, OIOURL_USER));
}
err = __get_container_all_services(sq3, url, ct->type, &used);
if (NULL != err) {
g_prefix_error(&err, "Preliminary lookup error : ");
return err;
}
if (used && !*used) {
g_free(used);
used = NULL;
}
if (used && (mode != M1V2_GETSRV_RENEW)) {
/* Only keep the services UP, if not forced to renew */
struct meta1_service_url_s **up = __get_services_up(m1, used);
if (up && *up) {
*result = pack_urlv(up);
meta1_service_url_cleanv(up);
meta1_service_url_cleanv(used);
return NULL;
}
meta1_service_url_cleanv(up);
}
if (used && (mode == M1V2_GETSRV_REUSE || policy == SVCUPD_KEEP)) {
/* Services used but unavailable, but we are told to reuse */
*result = pack_urlv(used);
meta1_service_url_cleanv(used);
return err;
}
/* No service available, poll a new one */
struct meta1_service_url_s *m1_url = NULL;
gint seq = urlv_get_max_seq(used);
seq = (seq<0 ? 1 : seq+1);
if (NULL != (m1_url = __poll_services(m1, replicas, ct, seq, used, &err))) {
if (mode != M1V2_GETSRV_DRYRUN) {
if (NULL == err) {
if (policy == SVCUPD_REPLACE)
err = __delete_service(sq3, url, ct->type);
if (NULL == err)
err = __save_service(sq3, url, m1_url, TRUE);
}
}
if (!err && result) {
struct meta1_service_url_s **unpacked = expand_url(m1_url);
*result = pack_urlv(unpacked);
meta1_service_url_cleanv(unpacked);
if (renewed) *renewed = TRUE;
}
g_free(m1_url);
}
meta1_service_url_cleanv(used);
return err;
}
static GError *
__relink_container_services(struct m1v2_relink_input_s *in, gchar ***out)
{
GError *err = NULL;
struct service_info_s **polled = NULL;
struct meta1_service_url_s *packed = NULL;
struct meta1_service_url_s *ref = (in->kept && in->kept[0])
? in->kept[0] : in->replaced[0];
/* check the services provided are those in place */
struct meta1_service_url_s **inplace = NULL;
err = __get_container_all_services (in->sq3, in->url, ref->srvtype, &inplace);
if (!err && !__match_urlv(inplace, in->kept, in->replaced))
err = NEWERROR(CODE_USER_INUSE, "services changed");
meta1_service_url_cleanv (inplace);
inplace = NULL;
/* it is time to poll */
if (!err) {
struct service_update_policies_s *pol = meta1_backend_get_svcupdate(in->m1);
EXTRA_ASSERT (pol != NULL);
struct lb_next_opt_ext_s opt;
memset (&opt, 0, sizeof (opt));
opt.req.max = service_howmany_replicas (pol, in->ct->baretype);
opt.req.distance = opt.req.max > 1 ? 1 : 0;
opt.req.duplicates = FALSE;
opt.req.stgclass = NULL;
opt.req.strict_stgclass = TRUE;
opt.filter.hook = NULL;
opt.filter.data = NULL;
if (in->kept)
opt.srv_inplace = __srvinfo_from_m1srvurl (in->m1->lb,
in->ct->baretype, in->kept);
if (in->replaced)
opt.srv_forbidden = __srvinfo_from_m1srvurl (in->m1->lb,
in->ct->baretype, in->replaced);
if (g_slist_length(opt.srv_inplace) >= opt.req.max)
err = NEWERROR(CODE_POLICY_NOT_SATISFIABLE, "Too many services kept");
if (!err) {
if (!grid_lb_iterator_next_set2 (in->iterator, &polled, &opt)) {
EXTRA_ASSERT(polled == NULL);
err = NEWERROR (CODE_POLICY_NOT_SATISFIABLE, "No service available");
} else {
EXTRA_ASSERT(polled != NULL);
}
}
g_slist_free_full (opt.srv_forbidden, (GDestroyNotify)service_info_clean);
g_slist_free_full (opt.srv_inplace, (GDestroyNotify)service_info_clean);
}
/* Services have been polled, them save them.
* We MUST use the same SEQ number. Since the service are packed in one
* entry, we can save them with a single SQL statement. */
if (!err && !in->dryrun) {
packed = _siv_to_url (polled);
packed->seq = ref->seq;
strcpy (packed->srvtype, ref->srvtype);
err = __save_service (in->sq3, in->url, packed, TRUE);
}
/* if the checks, polling and storage succeeded, prepare the output for
* the caller */
if (!err) {
struct meta1_service_url_s **newset = expand_url (packed);
*out = pack_urlv (newset);
meta1_service_url_cleanv (newset);
}
service_info_cleanv (polled, FALSE);
meta1_service_url_clean (packed);
return err;
}
static GError *
__get_container_service2(struct sqlx_sqlite3_s *sq3,
struct oio_url_s *url, struct compound_type_s *ct,
struct meta1_backend_s *m1, enum m1v2_getsrv_e mode,
gchar ***result, gboolean *renewed)
{
GError *err = NULL;
struct meta1_service_url_s **used = NULL;
enum service_update_policy_e policy;
guint replicas;
struct service_update_policies_s *pol;
if (!(pol = meta1_backend_get_svcupdate(m1)))
return NEWERROR(CODE_POLICY_NOT_SATISFIABLE, "Bad NS/Policy pair");
policy = service_howto_update(pol, ct->baretype);
replicas = service_howmany_replicas(pol, ct->baretype);
replicas = (replicas > 0 ? replicas : 1);
// Patches the constraint on the service type (if not set in the request)
// by the constraint set in the NS-wide storage policy.
compound_type_update_arg(ct, pol, FALSE);
err = __get_container_all_services(sq3, url, ct->type, &used);
if (NULL != err) {
g_prefix_error(&err, "Preliminary lookup error : ");
return err;
}
if (used && !*used) {
g_free(used);
used = NULL;
}
if (used && (mode != M1V2_GETSRV_RENEW)) {
/* Only keep the services UP, if not forced to renew */
struct meta1_service_url_s **up = __get_services_up(m1, used);
if (up && *up) {
*result = pack_urlv(up);
meta1_service_url_cleanv(up);
meta1_service_url_cleanv(used);
return NULL;
}
meta1_service_url_cleanv(up);
}
if (used && (mode == M1V2_GETSRV_REUSE || policy == SVCUPD_KEEP)) {
/* Services used but unavailable, but we are told to reuse */
*result = pack_urlv(used);
meta1_service_url_cleanv(used);
return err;
}
/* No service available, poll a new one */
struct meta1_service_url_s *m1_url = NULL;
gint seq = urlv_get_max_seq(used);
seq = (seq<0 ? 1 : seq+1);
if (NULL != (m1_url = __poll_services(m1, replicas, ct, seq, used, &err))) {
if (mode != M1V2_GETSRV_DRYRUN) {
if (NULL == err) {
if (policy == SVCUPD_REPLACE)
err = __delete_service(sq3, url, ct->type);
if (NULL == err)
err = __save_service(sq3, url, m1_url, TRUE);
}
}
if (!err && result) {
struct meta1_service_url_s **unpacked = expand_url(m1_url);
*result = pack_urlv(unpacked);
meta1_service_url_cleanv(unpacked);
if (renewed) *renewed = TRUE;
}
g_free(m1_url);
}
meta1_service_url_cleanv(used);
return err;
}