/* Create a connection to the OVSDB at db_path and create a dB cache
* for this daemon. */
void
classifierd_ovsdb_init(const char *db_path)
{
VLOG_DBG("%s: db_path = %s\n",__FUNCTION__,db_path);
/* Initialize IDL through a new connection to the dB. */
idl = ovsdb_idl_create(db_path, &ovsrec_idl_class, false, true);
idl_seqno = ovsdb_idl_get_seqno(idl);
ovsdb_idl_set_lock(idl, "ops_classifierd");
/* Reject writes to columns which are not marked write-only using
* ovsdb_idl_omit_alert().
*/
ovsdb_idl_verify_write_only(idl);
/* Choose some OVSDB tables and columns to cache. */
ovsdb_idl_add_table(idl, &ovsrec_table_system);
ovsdb_idl_add_table(idl, &ovsrec_table_subsystem);
/* Monitor the following columns, marking them read-only. */
ovsdb_idl_add_column(idl, &ovsrec_system_col_cur_cfg);
/* Initialize ovsdb interfaces for ACL */
acl_ovsdb_init(idl);
} /* classifierd_ovsdb_init */
static void
usermgmt_init(const char *remote)
{
/* Create connection to OVSDB. */
idl = ovsdb_idl_create(remote, &ovsrec_idl_class, false, true);
idl_seqno = ovsdb_idl_get_seqno(idl);
ovsdb_idl_set_lock(idl, "ops_usermgmt");
/* Get notified when either of these change. */
ovsdb_idl_add_column(idl, &ovsrec_user_col_username);
ovsdb_idl_add_column(idl, &ovsrec_user_col_password);
}
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();
}
}
}
int
main(int argc, char *argv[])
{
struct unixctl_server *unixctl;
bool exiting;
int retval;
ovs_cmdl_proctitle_init(argc, argv);
set_program_name(argv[0]);
parse_options(argc, argv);
fatal_ignore_sigpipe();
daemonize_start();
retval = unixctl_server_create(NULL, &unixctl);
if (retval) {
exit(EXIT_FAILURE);
}
unixctl_command_register("exit", "", 0, 0, ovn_controller_exit, &exiting);
daemonize_complete();
ovsrec_init();
sbrec_init();
ofctrl_init();
lflow_init();
/* Connect to OVS OVSDB instance. We do not monitor all tables by
* default, so modules must register their interest explicitly. */
struct idl_loop ovs_idl_loop = IDL_LOOP_INITIALIZER(
ovsdb_idl_create(ovs_remote, &ovsrec_idl_class, false, true));
ovsdb_idl_add_table(ovs_idl_loop.idl, &ovsrec_table_open_vswitch);
ovsdb_idl_add_column(ovs_idl_loop.idl,
&ovsrec_open_vswitch_col_external_ids);
chassis_register_ovs_idl(ovs_idl_loop.idl);
encaps_register_ovs_idl(ovs_idl_loop.idl);
binding_register_ovs_idl(ovs_idl_loop.idl);
physical_register_ovs_idl(ovs_idl_loop.idl);
get_initial_snapshot(ovs_idl_loop.idl);
/* Connect to OVN SB database. */
char *ovnsb_remote = get_ovnsb_remote(ovs_idl_loop.idl);
struct idl_loop ovnsb_idl_loop = IDL_LOOP_INITIALIZER(
ovsdb_idl_create(ovnsb_remote, &sbrec_idl_class, true, true));
get_initial_snapshot(ovnsb_idl_loop.idl);
/* Main loop. */
exiting = false;
while (!exiting) {
struct controller_ctx ctx = {
.ovs_idl = ovs_idl_loop.idl,
.ovs_idl_txn = idl_loop_run(&ovs_idl_loop),
.ovnsb_idl = ovnsb_idl_loop.idl,
.ovnsb_idl_txn = idl_loop_run(&ovnsb_idl_loop),
};
const struct ovsrec_bridge *br_int = get_br_int(ctx.ovs_idl);
const char *chassis_id = get_chassis_id(ctx.ovs_idl);
if (chassis_id) {
chassis_run(&ctx, chassis_id);
encaps_run(&ctx, br_int, chassis_id);
binding_run(&ctx, br_int, chassis_id);
}
if (br_int) {
struct hmap flow_table = HMAP_INITIALIZER(&flow_table);
lflow_run(&ctx, &flow_table);
if (chassis_id) {
physical_run(&ctx, br_int, chassis_id, &flow_table);
}
ofctrl_run(br_int, &flow_table);
hmap_destroy(&flow_table);
}
unixctl_server_run(unixctl);
unixctl_server_wait(unixctl);
if (exiting) {
poll_immediate_wake();
}
idl_loop_commit_and_wait(&ovnsb_idl_loop);
idl_loop_commit_and_wait(&ovs_idl_loop);
if (br_int) {
ofctrl_wait();
}
poll_block();
}
/* It's time to exit. Clean up the databases. */
bool done = false;
while (!done) {
struct controller_ctx ctx = {
.ovs_idl = ovs_idl_loop.idl,
.ovs_idl_txn = idl_loop_run(&ovs_idl_loop),
.ovnsb_idl = ovnsb_idl_loop.idl,
.ovnsb_idl_txn = idl_loop_run(&ovnsb_idl_loop),
};
const struct ovsrec_bridge *br_int = get_br_int(ctx.ovs_idl);
const char *chassis_id = get_chassis_id(ctx.ovs_idl);
/* Run all of the cleanup functions, even if one of them returns false.
* We're done if all of them return true. */
done = binding_cleanup(&ctx, chassis_id);
done = chassis_cleanup(&ctx, chassis_id) && done;
done = encaps_cleanup(&ctx, br_int) && done;
if (done) {
poll_immediate_wake();
}
idl_loop_commit_and_wait(&ovnsb_idl_loop);
idl_loop_commit_and_wait(&ovs_idl_loop);
poll_block();
}
unixctl_server_destroy(unixctl);
lflow_destroy();
ofctrl_destroy();
idl_loop_destroy(&ovs_idl_loop);
idl_loop_destroy(&ovnsb_idl_loop);
free(ovnsb_remote);
free(ovs_remote);
exit(retval);
}
static void
parse_options(int argc, char *argv[])
{
enum {
OPT_PEER_CA_CERT = UCHAR_MAX + 1,
VLOG_OPTION_ENUMS,
DAEMON_OPTION_ENUMS
};
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
VLOG_LONG_OPTIONS,
DAEMON_LONG_OPTIONS,
STREAM_SSL_LONG_OPTIONS,
{"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT},
{NULL, 0, NULL, 0}
};
char *short_options = ovs_cmdl_long_options_to_short_options(long_options);
for (;;) {
int c;
c = getopt_long(argc, argv, short_options, long_options, NULL);
if (c == -1) {
break;
}
switch (c) {
case 'h':
usage();
case 'V':
ovs_print_version(OFP13_VERSION, OFP13_VERSION);
exit(EXIT_SUCCESS);
VLOG_OPTION_HANDLERS
DAEMON_OPTION_HANDLERS
STREAM_SSL_OPTION_HANDLERS
case OPT_PEER_CA_CERT:
stream_ssl_set_peer_ca_cert_file(optarg);
break;
case '?':
exit(EXIT_FAILURE);
default:
abort();
}
}
free(short_options);
argc -= optind;
argv += optind;
if (argc == 0) {
ovs_remote = xasprintf("unix:%s/db.sock", ovs_rundir());
} else if (argc == 1) {
ovs_remote = xstrdup(argv[0]);
} else {
VLOG_FATAL("exactly zero or one non-option argument required; "
"use --help for usage");
}
}
static void
usage(void)
{
printf("%s: OVN controller\n"
"usage %s [OPTIONS] [OVS-DATABASE]\n"
"where OVS-DATABASE is a socket on which the OVS OVSDB server is listening.\n",
program_name, program_name);
stream_usage("OVS-DATABASE", true, false, false);
daemon_usage();
vlog_usage();
printf("\nOther options:\n"
" -h, --help display this help message\n"
" -V, --version display version information\n");
exit(EXIT_SUCCESS);
}
static void
ovn_controller_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
const char *argv[] OVS_UNUSED, void *exiting_)
{
bool *exiting = exiting_;
*exiting = true;
unixctl_command_reply(conn, NULL);
}