void
classifierd_wait(void)
{
if (classifierd_run_timer) {
poll_timer_wait_until(time_msec() +
CLASSIFIERD_RUN_TIMER_INTERVAL_MSEC);
classifierd_run_timer = false;
}
ovsdb_idl_wait(idl);
} /* classifierd_wait */
static void
get_initial_snapshot(struct ovsdb_idl *idl)
{
while (1) {
ovsdb_idl_run(idl);
if (ovsdb_idl_has_ever_connected(idl)) {
return;
}
ovsdb_idl_wait(idl);
poll_block();
}
}
static void
idl_loop_commit_and_wait(struct idl_loop *loop)
{
if (loop->open_txn) {
loop->committing_txn = loop->open_txn;
loop->open_txn = NULL;
loop->precommit_seqno = ovsdb_idl_get_seqno(loop->idl);
}
struct ovsdb_idl_txn *txn = loop->committing_txn;
if (txn) {
enum ovsdb_idl_txn_status status = ovsdb_idl_txn_commit(txn);
if (status != TXN_INCOMPLETE) {
switch (status) {
case TXN_TRY_AGAIN:
/* We want to re-evaluate the database when it's changed from
* the contents that it had when we started the commit. (That
* might have already happened.) */
loop->skip_seqno = loop->precommit_seqno;
if (ovsdb_idl_get_seqno(loop->idl) != loop->skip_seqno) {
poll_immediate_wake();
}
break;
case TXN_SUCCESS:
/* If the database has already changed since we started the
* commit, re-evaluate it immediately to avoid missing a change
* for a while. */
if (ovsdb_idl_get_seqno(loop->idl) != loop->precommit_seqno) {
poll_immediate_wake();
}
break;
case TXN_UNCHANGED:
case TXN_ABORTED:
case TXN_NOT_LOCKED:
case TXN_ERROR:
break;
case TXN_UNCOMMITTED:
case TXN_INCOMPLETE:
OVS_NOT_REACHED();
}
ovsdb_idl_txn_destroy(txn);
loop->committing_txn = NULL;
}
}
ovsdb_idl_wait(loop->idl);
}
/* Retrieves the OVN Southbound remote location from the
* "external-ids:ovn-remote" key in 'ovs_idl' and returns a copy of it.
*
* XXX ovn-controller does not support this changing mid-run, but that should
* be addressed later. */
static char *
get_ovnsb_remote(struct ovsdb_idl *ovs_idl)
{
while (1) {
ovsdb_idl_run(ovs_idl);
const struct ovsrec_open_vswitch *cfg
= ovsrec_open_vswitch_first(ovs_idl);
if (cfg) {
const char *remote = smap_get(&cfg->external_ids, "ovn-remote");
if (remote) {
return xstrdup(remote);
}
}
VLOG_INFO("OVN OVSDB remote not specified. Waiting...");
ovsdb_idl_wait(ovs_idl);
poll_block();
}
}
int
main(int argc, char *argv[])
{
struct ovsdb_idl *idl;
struct ctl_command *commands;
struct shash local_options;
unsigned int seqno;
size_t n_commands;
char *args;
set_program_name(argv[0]);
fatal_ignore_sigpipe();
vlog_set_levels(NULL, VLF_CONSOLE, VLL_WARN);
vlog_set_levels_from_string_assert("reconnect:warn");
sbrec_init();
sbctl_cmd_init();
/* Log our arguments. This is often valuable for debugging systems. */
args = process_escape_args(argv);
VLOG(ctl_might_write_to_db(argv) ? VLL_INFO : VLL_DBG, "Called as %s", args);
/* Parse command line. */
shash_init(&local_options);
parse_options(argc, argv, &local_options);
commands = ctl_parse_commands(argc - optind, argv + optind, &local_options,
&n_commands);
if (timeout) {
time_alarm(timeout);
}
/* Initialize IDL. */
idl = the_idl = ovsdb_idl_create(db, &sbrec_idl_class, false, false);
run_prerequisites(commands, n_commands, idl);
/* Execute the commands.
*
* 'seqno' is the database sequence number for which we last tried to
* execute our transaction. There's no point in trying to commit more than
* once for any given sequence number, because if the transaction fails
* it's because the database changed and we need to obtain an up-to-date
* view of the database before we try the transaction again. */
seqno = ovsdb_idl_get_seqno(idl);
for (;;) {
ovsdb_idl_run(idl);
if (!ovsdb_idl_is_alive(idl)) {
int retval = ovsdb_idl_get_last_error(idl);
ctl_fatal("%s: database connection failed (%s)",
db, ovs_retval_to_string(retval));
}
if (seqno != ovsdb_idl_get_seqno(idl)) {
seqno = ovsdb_idl_get_seqno(idl);
if (do_sbctl(args, commands, n_commands, idl)) {
free(args);
exit(EXIT_SUCCESS);
}
}
if (seqno == ovsdb_idl_get_seqno(idl)) {
ovsdb_idl_wait(idl);
poll_block();
}
}
}