1 /* Copyright (c) 2015 Nicira, Inc.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 #include "ovn-controller.h"
26 #include "command-line.h"
30 #include "openvswitch/vconn.h"
31 #include "openvswitch/vlog.h"
32 #include "ovn/lib/ovn-sb-idl.h"
33 #include "poll-loop.h"
34 #include "fatal-signal.h"
35 #include "lib/vswitch-idl.h"
38 #include "stream-ssl.h"
48 VLOG_DEFINE_THIS_MODULE(main);
50 static unixctl_cb_func ovn_controller_exit;
52 #define DEFAULT_BRIDGE_NAME "br-int"
54 static void parse_options(int argc, char *argv[]);
55 OVS_NO_RETURN static void usage(void);
57 static char *ovs_remote;
58 static char *ovnsb_remote;
62 get_initial_snapshot(struct ovsdb_idl *idl)
66 if (ovsdb_idl_has_ever_connected(idl)) {
74 static const struct ovsrec_bridge *
75 get_bridge(struct controller_ctx *ctx, const char *name)
77 const struct ovsrec_bridge *br;
79 OVSREC_BRIDGE_FOR_EACH(br, ctx->ovs_idl) {
80 if (!strcmp(br->name, name)) {
88 /* Retrieve the OVN integration bridge from the "external-ids:ovn-bridge"
89 * key, the remote location from the "external-ids:ovn-remote" key, and
90 * the chassis name from the "external-ids:system-id" key in the
91 * Open_vSwitch table of the OVS database instance.
93 * xxx ovn-controller does not support changing any of these mid-run,
94 * xxx but that should be addressed later. */
96 get_core_config(struct controller_ctx *ctx)
98 const struct ovsrec_open_vswitch *cfg;
100 cfg = ovsrec_open_vswitch_first(ctx->ovs_idl);
102 VLOG_ERR("No Open_vSwitch row defined.");
103 ovsdb_idl_destroy(ctx->ovs_idl);
108 const struct ovsrec_bridge *br_int;
109 const char *remote, *system_id, *br_int_name;
111 ovsdb_idl_run(ctx->ovs_idl);
113 br_int_name = smap_get(&cfg->external_ids, "ovn-bridge");
115 br_int_name = DEFAULT_BRIDGE_NAME;
117 ctx->br_int_name = xstrdup(br_int_name);
119 br_int = get_bridge(ctx, ctx->br_int_name);
121 VLOG_INFO("Integration bridge '%s' does not exist. Waiting...",
126 remote = smap_get(&cfg->external_ids, "ovn-remote");
128 VLOG_INFO("OVN OVSDB remote not specified. Waiting...");
132 system_id = smap_get(&cfg->external_ids, "system-id");
134 VLOG_INFO("system-id not specified. Waiting...");
138 ovnsb_remote = xstrdup(remote);
139 ctx->chassis_id = xstrdup(system_id);
143 ovsdb_idl_wait(ctx->ovs_idl);
150 main(int argc, char *argv[])
152 struct unixctl_server *unixctl;
153 struct controller_ctx ctx = { .chassis_id = NULL };
157 ovs_cmdl_proctitle_init(argc, argv);
158 set_program_name(argv[0]);
159 parse_options(argc, argv);
160 fatal_ignore_sigpipe();
164 retval = unixctl_server_create(NULL, &unixctl);
168 unixctl_command_register("exit", "", 0, 0, ovn_controller_exit, &exiting);
170 daemonize_complete();
177 /* Connect to OVS OVSDB instance. We do not monitor all tables by
178 * default, so modules must register their interest explicitly. */
179 ctx.ovs_idl = ovsdb_idl_create(ovs_remote, &ovsrec_idl_class, false, true);
181 /* Register interest in "external_ids" column in "Open_vSwitch" table,
182 * since we'll need to get the OVN OVSDB remote. */
183 ovsdb_idl_add_table(ctx.ovs_idl, &ovsrec_table_open_vswitch);
184 ovsdb_idl_add_column(ctx.ovs_idl, &ovsrec_open_vswitch_col_external_ids);
191 get_initial_snapshot(ctx.ovs_idl);
193 get_core_config(&ctx);
195 ctx.ovnsb_idl = ovsdb_idl_create(ovnsb_remote, &sbrec_idl_class,
197 get_initial_snapshot(ctx.ovnsb_idl);
201 ovsdb_idl_run(ctx.ovs_idl);
202 ovsdb_idl_run(ctx.ovnsb_idl);
204 /* xxx If run into any surprising changes, we exit. We should
205 * xxx handle this more gracefully. */
206 ctx.br_int = get_bridge(&ctx, ctx.br_int_name);
208 VLOG_ERR("Integration bridge '%s' disappeared",
210 retval = EXIT_FAILURE;
214 if (!ovsdb_idl_is_alive(ctx.ovnsb_idl)) {
215 int retval = ovsdb_idl_get_last_error(ctx.ovnsb_idl);
216 VLOG_ERR("%s: database connection failed (%s)",
217 ovnsb_remote, ovs_retval_to_string(retval));
218 retval = EXIT_FAILURE;
222 if (!ovsdb_idl_is_alive(ctx.ovs_idl)) {
223 int retval = ovsdb_idl_get_last_error(ctx.ovs_idl);
224 VLOG_ERR("%s: database connection failed (%s)",
225 ovs_remote, ovs_retval_to_string(retval));
226 retval = EXIT_FAILURE;
230 ofctrl_clear_flows();
237 unixctl_server_run(unixctl);
239 unixctl_server_wait(unixctl);
241 poll_immediate_wake();
244 ovsdb_idl_wait(ctx.ovs_idl);
245 ovsdb_idl_wait(ctx.ovnsb_idl);
250 unixctl_server_destroy(unixctl);
251 pipeline_destroy(&ctx);
253 binding_destroy(&ctx);
254 chassis_destroy(&ctx);
256 ovsdb_idl_destroy(ctx.ovs_idl);
257 ovsdb_idl_destroy(ctx.ovnsb_idl);
259 free(ctx.br_int_name);
260 free(ctx.chassis_id);
268 parse_options(int argc, char *argv[])
271 OPT_PEER_CA_CERT = UCHAR_MAX + 1,
276 static struct option long_options[] = {
277 {"help", no_argument, NULL, 'h'},
278 {"version", no_argument, NULL, 'V'},
281 STREAM_SSL_LONG_OPTIONS,
282 {"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT},
285 char *short_options = ovs_cmdl_long_options_to_short_options(long_options);
290 c = getopt_long(argc, argv, short_options, long_options, NULL);
300 ovs_print_version(OFP13_VERSION, OFP13_VERSION);
304 DAEMON_OPTION_HANDLERS
305 STREAM_SSL_OPTION_HANDLERS
307 case OPT_PEER_CA_CERT:
308 stream_ssl_set_peer_ca_cert_file(optarg);
324 ovs_remote = xasprintf("unix:%s/db.sock", ovs_rundir());
325 } else if (argc == 1) {
326 ovs_remote = xstrdup(argv[0]);
328 VLOG_FATAL("exactly zero or one non-option argument required; "
329 "use --help for usage");
336 printf("%s: OVN controller\n"
337 "usage %s [OPTIONS] [OVS-DATABASE]\n"
338 "where OVS-DATABASE is a socket on which the OVS OVSDB server is listening.\n",
339 program_name, program_name);
340 stream_usage("OVS-DATABASE", true, false, false);
343 printf("\nOther options:\n"
344 " -h, --help display this help message\n"
345 " -V, --version display version information\n");
350 ovn_controller_exit(struct unixctl_conn *conn, int argc OVS_UNUSED,
351 const char *argv[] OVS_UNUSED, void *exiting_)
353 bool *exiting = exiting_;
356 unixctl_command_reply(conn, NULL);