Let dds_create_participant determine domain id if config specifies "any" (new default)

Note: DDS_DOMAIN_DEFAULT with a configuration specifying "any" results in domain 0.
Signed-off-by: Erik Boasson <eb@ilities.com>

src/core/ddsc/src/dds__init.h

@@ -32,7 +32,7 @@ dds__check_domain(
  *-# Returns 0 on success or a non-zero error status
  **/
 dds_return_t
-dds_init(void);
+dds_init(dds_domainid_t domain);
 
 /* Finalization function, called from main */
 

src/core/ddsc/src/dds_builtin.c

@@ -137,8 +137,8 @@ dds__create_builtin_participant(
     }
 
     pp->m_entity.m_guid = guid;
-    pp->m_entity.m_domain = dds_domain_create (config.domainId);
-    pp->m_entity.m_domainid = config.domainId;
+    pp->m_entity.m_domain = dds_domain_create (config.domainId.value);
+    pp->m_entity.m_domainid = config.domainId.value;
     pp->m_entity.m_deriver.delete = dds__delete_builtin_participant;
 
 fail:

src/core/ddsc/src/dds_init.c

@@ -41,7 +41,7 @@ dds_globals dds_global = { .m_default_domain = DDS_DOMAIN_DEFAULT };
 static struct cfgst * dds_cfgst = NULL;
 
 dds_return_t
-dds_init(void)
+dds_init(dds_domainid_t domain)
 {
   dds_return_t ret = DDS_RETCODE_OK;
   const char * uri;
@@ -86,9 +86,29 @@ dds_init(void)
     ret = DDS_ERRNO(DDS_RETCODE_ERROR, "Failed to parse configuration XML file %s", uri);
     goto fail_config;
   }
+
+  /* if a domain id was explicitly given, check & fix up the configuration */
+  if (domain != DDS_DOMAIN_DEFAULT)
+  {
+    if (domain < 0 || domain > 230)
+    {
+      ret = DDS_ERRNO(DDS_RETCODE_ERROR, "requested domain id %d is out of range", domain);
+      goto fail_config;
+    }
+    else if (config.domainId.isdefault)
+    {
+      config.domainId.value = domain;
+    }
+    else if (domain != config.domainId.value)
+    {
+      ret = DDS_ERRNO(DDS_RETCODE_ERROR, "requested domain id %d is inconsistent with configured value %d", domain, config.domainId.value);
+      goto fail_config;
+    }
+  }
+
   /* The config.domainId can change internally in DDSI. So, remember what the
    * main configured domain id is. */
-  dds_global.m_default_domain = config.domainId;
+  dds_global.m_default_domain = config.domainId.value;
 
   dds__builtin_init();
 

src/core/ddsc/src/dds_participant.c

@@ -148,7 +148,7 @@ dds_create_participant(
     bool asleep;
 
     /* Make sure DDS instance is initialized. */
-    ret = dds_init();
+    ret = dds_init(domain);
     if (ret != DDS_RETCODE_OK) {
         e = (dds_entity_t)ret;
         goto fail_dds_init;

src/core/ddsc/tests/participant.c

@@ -45,13 +45,13 @@ Test(ddsc_participant, create_with_no_conf_no_env) {
   dds_entity_t participant, participant2, participant3;
   dds_return_t status;
   dds_domainid_t domain_id;
-  dds_domainid_t valid_domain=0;
+  dds_domainid_t valid_domain=3;
 
   const char * env_uri = os_getenv(DDSC_PROJECT_NAME_NOSPACE_CAPS"_URI");
   cr_assert_eq(env_uri, NULL, DDSC_PROJECT_NAME_NOSPACE_CAPS"_URI must be NULL");
 
   //invalid domain
-  participant = dds_create_participant (1, NULL, NULL);
+  participant = dds_create_participant (-2, NULL, NULL);
   cr_assert_lt(participant, 0, "Error must be received for invalid domain value");
 
   //valid specific domain value

src/core/ddsi/include/ddsi/q_config.h

@@ -235,11 +235,10 @@ struct config
   enum boolean_default compat_tcp_enable;
   int dontRoute;
   int enableMulticastLoopback;
-  int domainId;
+  struct config_maybe_int32 domainId;
   int participantIndex;
   int maxAutoParticipantIndex;
   int port_base;
-  struct config_maybe_int32 discoveryDomainId;
   char *spdpMulticastAddressString;
   char *defaultMulticastAddressString;
   char *assumeMulticastCapable;

src/core/ddsi/src/q_addrset.c

@@ -101,7 +101,7 @@ static int add_addresses_to_addrset_1 (struct addrset *as, const char *ip, int p
       int i;
       for (i = 0; i <= config.maxAutoParticipantIndex; i++)
       {
-        int port = config.port_base + config.port_dg * config.domainId + i * config.port_pg + config.port_d1;
+        int port = config.port_base + config.port_dg * config.domainId.value + i * config.port_pg + config.port_d1;
         loc.port = (unsigned) port;
         if (i == 0)
           nn_log (LC_CONFIG, "%s", ddsi_locator_to_string(buf, sizeof(buf), &loc));
@@ -114,7 +114,7 @@ static int add_addresses_to_addrset_1 (struct addrset *as, const char *ip, int p
     {
       int port = port_mode;
       if (port == -1)
-        port = config.port_base + config.port_dg * config.domainId + config.port_d0;
+        port = config.port_base + config.port_dg * config.domainId.value + config.port_d0;
       loc.port = (unsigned) port;
       nn_log (LC_CONFIG, "%s", ddsi_locator_to_string(buf, sizeof(buf), &loc));
       add_to_addrset (as, &loc);

src/core/ddsi/src/q_config.c

@@ -161,7 +161,7 @@ DUPF(cipher);
 #ifdef DDSI_INCLUDE_BANDWIDTH_LIMITING
 DUPF(bandwidth);
 #endif
-DU(domainId);
+DUPF(domainId);
 DUPF(durability_cdr);
 DUPF(transport_selector);
 DUPF(many_sockets_mode);
@@ -727,8 +727,6 @@ static const struct cfgelem discovery_peers_cfgelems[] = {
 };
 
 static const struct cfgelem discovery_cfgelems[] = {
-    { LEAF("DomainId"), 1, "default", ABSOFF(discoveryDomainId), 0, uf_maybe_int32, 0, pf_maybe_int32,
-    "<p>This element allows overriding of the DDS Domain Id that is used for DDSI2E.</p>" },
     { LEAF("AdvertiseBuiltinTopicWriters"), 1, "true", ABSOFF(advertise_builtin_topic_writers), 0, uf_boolean, 0, pf_boolean,
     "<p>This element controls whether or not DDSI2E advertises writers for the built-in topics from its discovery for backwards compatibility with older OpenSplice versions.</p>" },
     { LEAF("DSGracePeriod"), 1, "30 s", ABSOFF(ds_grace_period), 0, uf_duration_inf, 0, pf_duration,
@@ -873,7 +871,7 @@ static const struct cfgelem lease_cfgelems[] = {
 
 static const struct cfgelem domain_cfgelems[] = {
     { GROUP("Lease", lease_cfgelems), NULL },
-    { LEAF("Id"), 1, "0", ABSOFF(domainId), 0, uf_domainId, 0, pf_int, NULL },
+    { LEAF("Id"), 1, "any", ABSOFF(domainId), 0, uf_domainId, 0, pf_domainId, NULL },
     WILDCARD,
     END_MARKER
 };
@@ -1904,9 +1902,20 @@ static int uf_int_min_max(struct cfgst *cfgst, void *parent, struct cfgelem cons
         return 1;
 }
 
-static int uf_domainId(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int first, const char *value)
+static int uf_domainId(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, UNUSED_ARG(int first), const char *value)
 {
-    return uf_int_min_max(cfgst, parent, cfgelem, first, value, 0, 230);
+  struct config_maybe_int32 *elem = cfg_address(cfgst, parent, cfgelem);
+  int pos;
+  if (os_strcasecmp(value, "any") == 0) {
+    elem->isdefault = 1;
+    elem->value = 0;
+    return 1;
+  } else if (sscanf(value, "%d%n", &elem->value, &pos) == 1 && value[pos] == 0 && elem->value >= 0 && elem->value <= 230) {
+    elem->isdefault = 0;
+    return 1;
+  } else {
+    return cfg_error(cfgst, "'%s': neither 'any' nor a decimal integer in 0 .. 230\n", value);
+  }
 }
 
 static int uf_participantIndex(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int first, const char *value)
@@ -2213,11 +2222,11 @@ static void pf_uint32(struct cfgst *cfgst, void *parent, struct cfgelem const *
 
 static void pf_maybe_int32(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int is_default)
 {
-    struct config_maybe_int32 *p = cfg_address(cfgst, parent, cfgelem);
-    if ( p->isdefault )
-        cfg_log(cfgst, "default%s", is_default ? " [def]" : "");
-    else
-        cfg_log(cfgst, "%d%s", p->value, is_default ? " [def]" : "");
+  struct config_maybe_int32 *p = cfg_address(cfgst, parent, cfgelem);
+  if ( p->isdefault )
+    cfg_log(cfgst, "default%s", is_default ? " [def]" : "");
+  else
+    cfg_log(cfgst, "%d%s", p->value, is_default ? " [def]" : "");
 }
 
 static void pf_maybe_memsize(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int is_default)
@@ -2229,6 +2238,14 @@ static void pf_maybe_memsize(struct cfgst *cfgst, void *parent, struct cfgelem c
         pf_int64_unit(cfgst, p->value, is_default, unittab_memsize, "B");
 }
 
+static void pf_domainId(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int is_default)
+{
+  struct config_maybe_int32 *p = cfg_address(cfgst, parent, cfgelem);
+  if ( p->isdefault )
+    cfg_log(cfgst, "any (%d)%s", p->value, is_default ? " [def]" : "");
+  else
+    cfg_log(cfgst, "%d%s", p->value, is_default ? " [def]" : "");
+}
 
 static void pf_float(struct cfgst *cfgst, void *parent, struct cfgelem const * const cfgelem, int is_default)
 {
@@ -2707,6 +2724,12 @@ struct cfgst * config_init
     config.tracingOutputFile = stderr;
     config.enabled_logcats = LC_ERROR | LC_WARNING;
 
+    /* eventually, we domainId.value will be the real domain id selected, even if it was configured
+       to the default of "any" and has "isdefault" set; initializing it to the default-default
+       value of 0 means "any" in the config & DDS_DOMAIN_DEFAULT in create participant automatically
+       ends up on the right value */
+    config.domainId.value = 0;
+
     cfgst = os_malloc(sizeof(*cfgst));
     memset(cfgst, 0, sizeof(*cfgst));
 

src/core/ddsi/src/q_init.c

@@ -74,7 +74,7 @@ static int make_uc_sockets (uint32_t * pdisc, uint32_t * pdata, int ppid)
   if (config.many_sockets_mode == MSM_NO_UNICAST)
   {
     assert (ppid == PARTICIPANT_INDEX_NONE);
-    *pdata = *pdisc = (uint32_t) (config.port_base + config.port_dg * config.domainId);
+    *pdata = *pdisc = (uint32_t) (config.port_base + config.port_dg * config.domainId.value);
     if (config.allowMulticast)
     {
       /* FIXME: ugly hack - but we'll fix up after creating the multicast sockets */
@@ -85,7 +85,7 @@ static int make_uc_sockets (uint32_t * pdisc, uint32_t * pdata, int ppid)
   if (ppid >= 0)
   {
     /* FIXME: verify port numbers are in range instead of truncating them like this */
-    int base = config.port_base + (config.port_dg * config.domainId) + (ppid * config.port_pg);
+    int base = config.port_base + (config.port_dg * config.domainId.value) + (ppid * config.port_pg);
     *pdisc = (uint32_t) (base + config.port_d1);
     *pdata = (uint32_t) (base + config.port_d3);
   }
@@ -284,7 +284,7 @@ static int string_to_default_locator (nn_locator_t *loc, const char *string, uin
 
 static int set_spdp_address (void)
 {
-  const uint32_t port = (uint32_t) (config.port_base + config.port_dg * config.domainId + config.port_d0);
+  const uint32_t port = (uint32_t) (config.port_base + config.port_dg * config.domainId.value + config.port_d0);
   int rc = 0;
   /* FIXME: FIXME: FIXME: */
   gv.loc_spdp_mc.kind = NN_LOCATOR_KIND_INVALID;
@@ -321,7 +321,7 @@ static int set_spdp_address (void)
 
 static int set_default_mc_address (void)
 {
-  const uint32_t port = (uint32_t) (config.port_base + config.port_dg * config.domainId + config.port_d2);
+  const uint32_t port = (uint32_t) (config.port_base + config.port_dg * config.domainId.value + config.port_d2);
   int rc;
   if (!config.defaultMulticastAddressString)
     gv.loc_default_mc = gv.loc_spdp_mc;
@@ -464,15 +464,7 @@ int rtps_config_prep (struct cfgst *cfgst)
   unsigned num_channel_threads = 0;
 #endif
 
-  /* if the discovery domain id was explicitly set, override the default here */
-  if (!config.discoveryDomainId.isdefault)
-  {
-    config.domainId = config.discoveryDomainId.value;
-  }
-
   /* retry_on_reject_duration default is dependent on late_ack_mode and responsiveness timeout, so fix up */
-
-
   if (config.whc_init_highwater_mark.isdefault)
     config.whc_init_highwater_mark.value = config.whc_lowwater_mark;
   if (config.whc_highwater_mark < config.whc_lowwater_mark ||
@@ -662,7 +654,7 @@ int joinleave_spdp_defmcip (int dojoin)
   unref_addrset (as);
   if (arg.errcount)
   {
-    NN_ERROR ("rtps_init: failed to join multicast groups for domain %d participant %d\n", config.domainId, config.participantIndex);
+    NN_ERROR ("rtps_init: failed to join multicast groups for domain %d participant %d\n", config.domainId.value, config.participantIndex);
     return -1;
   }
   return 0;
@@ -676,7 +668,7 @@ int create_multicast_sockets(void)
   qos->m_multicast = 1;
 
   /* FIXME: should check for overflow */
-  port = (uint32_t) (config.port_base + config.port_dg * config.domainId + config.port_d0);
+  port = (uint32_t) (config.port_base + config.port_dg * config.domainId.value + config.port_d0);
   if ((disc = ddsi_factory_create_conn (gv.m_factory, port, qos)) == NULL)
     goto err_disc;
   if (config.many_sockets_mode == MSM_NO_UNICAST)
@@ -686,7 +678,7 @@ int create_multicast_sockets(void)
   }
   else
   {
-    port = (uint32_t) (config.port_base + config.port_dg * config.domainId + config.port_d2);
+    port = (uint32_t) (config.port_base + config.port_dg * config.domainId.value + config.port_d2);
     if ((data = ddsi_factory_create_conn (gv.m_factory, port, qos)) == NULL)
       goto err_data;
   }
@@ -960,7 +952,7 @@ int rtps_init (void)
 #ifdef DDSI_INCLUDE_NETWORK_PARTITIONS
   /* Convert address sets in partition mappings from string to address sets */
   {
-    const int port = config.port_base + config.port_dg * config.domainId + config.port_d2;
+    const int port = config.port_base + config.port_dg * config.domainId.value + config.port_d2;
     struct config_networkpartition_listelem *np;
     for (np = config.networkPartitions; np; np = np->next)
     {
@@ -1034,7 +1026,7 @@ int rtps_init (void)
     {
       if (make_uc_sockets (&port_disc_uc, &port_data_uc, config.participantIndex) < 0)
       {
-        NN_ERROR ("rtps_init: failed to create unicast sockets for domain %d participant %d\n", config.domainId, config.participantIndex);
+        NN_ERROR ("rtps_init: failed to create unicast sockets for domain %d participant %d\n", config.domainId.value, config.participantIndex);
         goto err_unicast_sockets;
       }
     }
@@ -1052,13 +1044,13 @@ int rtps_init (void)
           continue;
         else /* Oops! */
         {
-          NN_ERROR ("rtps_init: failed to create unicast sockets for domain %d participant %d\n", config.domainId, ppid);
+          NN_ERROR ("rtps_init: failed to create unicast sockets for domain %d participant %d\n", config.domainId.value, ppid);
           goto err_unicast_sockets;
         }
       }
       if (ppid > config.maxAutoParticipantIndex)
       {
-        NN_ERROR ("rtps_init: failed to find a free participant index for domain %d\n", config.domainId);
+        NN_ERROR ("rtps_init: failed to find a free participant index for domain %d\n", config.domainId.value);
         goto err_unicast_sockets;
       }
       config.participantIndex = ppid;
@@ -1069,7 +1061,7 @@ int rtps_init (void)
     }
     nn_log (LC_CONFIG, "rtps_init: uc ports: disc %u data %u\n", port_disc_uc, port_data_uc);
   }
-  nn_log (LC_CONFIG, "rtps_init: domainid %d participantid %d\n", config.domainId, config.participantIndex);
+  nn_log (LC_CONFIG, "rtps_init: domainid %d participantid %d\n", config.domainId.value, config.participantIndex);
 
   if (config.pcap_file && *config.pcap_file)
   {