void
classifierd_run(void)
{
struct ovsdb_idl_txn *txn;
/* Process a batch of messages from OVSDB. */
ovsdb_idl_run(idl);
if (ovsdb_idl_is_lock_contended(idl)) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
VLOG_ERR_RL(&rl, "Another classifierd process is running, "
"disabling this process until it goes away");
return;
} else if (!ovsdb_idl_has_lock(idl)) {
return;
}
/* Nothing to do until system has been configured, i.e. cur_cfg > 0. */
if (!classifierd_system_is_configured()) {
return;
}
/* Update the local configuration and push any changes to the dB. */
txn = ovsdb_idl_txn_create(idl);
if (classifierd_reconfigure()) {
VLOG_DBG("%s: Committing changes\n",__FUNCTION__);
/* Some OVSDB write needs to happen. */
ovsdb_idl_txn_commit_block(txn);
}
ovsdb_idl_txn_destroy(txn);
return;
} /* classifierd_run */
/* Perform all of the per-loop processing. */
static void
daemon_run(void)
{
unsigned int new_idl_seqno = ovsdb_idl_get_seqno(idl);
ovsdb_idl_run(idl);
if (ovsdb_idl_is_lock_contended(idl)) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
VLOG_ERR_RL(&rl, "another ops-usermgmt process is running, "
"disabling this process until it goes away");
return;
} else if (!ovsdb_idl_has_lock(idl)) {
return;
}
/* Acquired lock, we're officially ops-usermgmt now. */
if (!populated) {
/* First time we got this far, populate database from passwd. */
if (sync_to_db())
populated = true;
daemonize_complete();
vlog_enable_async();
VLOG_INFO_ONCE("%s (OpenSwitch usermgmt)", program_name);
}
if (new_idl_seqno == idl_seqno)
return;
/* Change in OVSDB detected. */
idl_seqno = new_idl_seqno;
sync_from_db();
}
static struct ovsdb_idl_txn *
idl_loop_run(struct idl_loop *loop)
{
ovsdb_idl_run(loop->idl);
loop->open_txn = (loop->committing_txn
|| ovsdb_idl_get_seqno(loop->idl) == loop->skip_seqno
? NULL
: ovsdb_idl_txn_create(loop->idl));
return loop->open_txn;
}
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();
}
}
/* 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();
}
}
}
