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Check sequence number of SEDP messages

Browse source 
Historical data can processed after new data, effectively going backward
in time, so only process data that is newer than the current state.

Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2019-07-18 19:12:00 +02:00 • committed by eboasson
parent 966ec0dda7
commit 103210bf8e
3 changed files with 84 additions and 74 deletions
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9
src/core/ddsi/include/dds/ddsi/q_entity.h
View file

@ -338,6 +338,7 @@ struct proxy_endpoint_common
struct addrset *as; /* address set to use for communicating with this endpoint */
nn_guid_t group_guid; /* 0:0:0:0 if not available */
nn_vendorid_t vendor; /* cached from proxypp->vendor */
seqno_t seq; /* sequence number of most recent SEDP message */
};
struct proxy_writer {
@ -608,8 +609,8 @@ void purge_proxy_participants (struct q_globals *gv, const nn_locator_t *loc, bo
/* To create a new proxy writer or reader; the proxy participant is
determined from the GUID and must exist. */
int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const struct nn_plist *plist, struct nn_dqueue *dqueue, struct xeventq *evq, nn_wctime_t timestamp);
int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const struct nn_plist *plist, nn_wctime_t timestamp
int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const struct nn_plist *plist, struct nn_dqueue *dqueue, struct xeventq *evq, nn_wctime_t timestamp, seqno_t seq);
int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const struct nn_plist *plist, nn_wctime_t timestamp, seqno_t seq
#ifdef DDSI_INCLUDE_SSM
, int favours_ssm
#endif
@ -623,8 +624,8 @@ int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const
int delete_proxy_writer (struct q_globals *gv, const struct nn_guid *guid, nn_wctime_t timestamp, int isimplicit);
int delete_proxy_reader (struct q_globals *gv, const struct nn_guid *guid, nn_wctime_t timestamp, int isimplicit);
void update_proxy_reader (struct proxy_reader *prd, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp);
void update_proxy_writer (struct proxy_writer *pwr, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp);
void update_proxy_reader (struct proxy_reader *prd, seqno_t seq, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp);
void update_proxy_writer (struct proxy_writer *pwr, seqno_t seq, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp);
int new_proxy_group (const struct nn_guid *guid, const char *name, const struct dds_qos *xqos, nn_wctime_t timestamp);
void delete_proxy_group (struct ephash *guid_hash, const struct nn_guid *guid, nn_wctime_t timestamp, int isimplicit);

18
src/core/ddsi/src/q_ddsi_discovery.c
View file

@ -1120,7 +1120,7 @@ static struct proxy_participant *implicitly_create_proxypp (struct q_globals *gv
return ephash_lookup_proxy_participant_guid (gv->guid_hash, ppguid);
}
static void handle_SEDP_alive (const struct receiver_state *rst, nn_plist_t *datap /* note: potentially modifies datap */, const nn_guid_prefix_t *src_guid_prefix, nn_vendorid_t vendorid, nn_wctime_t timestamp)
static void handle_SEDP_alive (const struct receiver_state *rst, seqno_t seq, nn_plist_t *datap /* note: potentially modifies datap */, const nn_guid_prefix_t *src_guid_prefix, nn_vendorid_t vendorid, nn_wctime_t timestamp)
{
#define E(msg, lbl) do { GVLOGDISC (msg); goto lbl; } while (0)
struct q_globals * const gv = rst->gv;
@ -1275,7 +1275,7 @@ static void handle_SEDP_alive (const struct receiver_state *rst, nn_plist_t *dat
{
if (pwr)
{
update_proxy_writer (pwr, as, xqos, timestamp);
update_proxy_writer (pwr, seq, as, xqos, timestamp);
}
else
{
@ -1287,7 +1287,7 @@ static void handle_SEDP_alive (const struct receiver_state *rst, nn_plist_t *dat
new_proxy_writer (&ppguid, &datap->endpoint_guid, as, datap, channel->dqueue, channel->evq ? channel->evq : gv->xevents, timestamp);
}
#else
new_proxy_writer (gv, &ppguid, &datap->endpoint_guid, as, datap, gv->user_dqueue, gv->xevents, timestamp);
new_proxy_writer (gv, &ppguid, &datap->endpoint_guid, as, datap, gv->user_dqueue, gv->xevents, timestamp, seq);
#endif
}
}
@ -1295,14 +1295,14 @@ static void handle_SEDP_alive (const struct receiver_state *rst, nn_plist_t *dat
{
if (prd)
{
update_proxy_reader (prd, as, xqos, timestamp);
update_proxy_reader (prd, seq, as, xqos, timestamp);
}
else
{
#ifdef DDSI_INCLUDE_SSM
new_proxy_reader (gv, &ppguid, &datap->endpoint_guid, as, datap, timestamp, ssm);
new_proxy_reader (gv, &ppguid, &datap->endpoint_guid, as, datap, timestamp, seq, ssm);
#else
new_proxy_reader (gv, &ppguid, &datap->endpoint_guid, as, datap, timestamp);
new_proxy_reader (gv, &ppguid, &datap->endpoint_guid, as, datap, timestamp, seq);
#endif
}
}
@ -1337,7 +1337,7 @@ static void handle_SEDP_dead (const struct receiver_state *rst, nn_plist_t *data
GVLOGDISC (" %s\n", (res < 0) ? " unknown" : " delete");
}
static void handle_SEDP (const struct receiver_state *rst, nn_wctime_t timestamp, unsigned statusinfo, const void *vdata, uint32_t len)
static void handle_SEDP (const struct receiver_state *rst, seqno_t seq, nn_wctime_t timestamp, unsigned statusinfo, const void *vdata, uint32_t len)
{
struct q_globals * const gv = rst->gv;
const struct CDRHeader *data = vdata; /* built-ins not deserialized (yet) */
@ -1370,7 +1370,7 @@ static void handle_SEDP (const struct receiver_state *rst, nn_wctime_t timestamp
switch (statusinfo & (NN_STATUSINFO_DISPOSE | NN_STATUSINFO_UNREGISTER))
{
case 0:
handle_SEDP_alive (rst, &decoded_data, &rst->src_guid_prefix, rst->vendor, timestamp);
handle_SEDP_alive (rst, seq, &decoded_data, &rst->src_guid_prefix, rst->vendor, timestamp);
break;
case NN_STATUSINFO_DISPOSE:
@ -1736,7 +1736,7 @@ int builtins_dqueue_handler (const struct nn_rsample_info *sampleinfo, const str
break;
case NN_ENTITYID_SEDP_BUILTIN_PUBLICATIONS_WRITER:
case NN_ENTITYID_SEDP_BUILTIN_SUBSCRIPTIONS_WRITER:
handle_SEDP (sampleinfo->rst, timestamp, statusinfo, datap, datasz);
handle_SEDP (sampleinfo->rst, sampleinfo->seq, timestamp, statusinfo, datap, datasz);
break;
case NN_ENTITYID_P2P_BUILTIN_PARTICIPANT_MESSAGE_WRITER:
handle_PMD (sampleinfo->rst, timestamp, statusinfo, datap, datasz);

31
src/core/ddsi/src/q_entity.c
View file

@ -3659,15 +3659,15 @@ void new_proxy_participant
assert (is_builtin_entityid (guid1.entityid, proxypp->vendor));
if (is_writer_entityid (guid1.entityid))
{
new_proxy_writer (gv, ppguid, &guid1, proxypp->as_meta, &plist_wr, gv->builtins_dqueue, gv->xevents, timestamp);
new_proxy_writer (gv, ppguid, &guid1, proxypp->as_meta, &plist_wr, gv->builtins_dqueue, gv->xevents, timestamp, 0);
}
else
{
#ifdef DDSI_INCLUDE_SSM
const int ssm = addrset_contains_ssm (gv, proxypp->as_meta);
new_proxy_reader (gv, ppguid, &guid1, proxypp->as_meta, &plist_rd, timestamp, ssm);
new_proxy_reader (gv, ppguid, &guid1, proxypp->as_meta, &plist_rd, timestamp, 0, ssm);
#else
new_proxy_reader (gv, ppguid, &guid1, proxypp->as_meta, &plist_rd, timestamp);
new_proxy_reader (gv, ppguid, &guid1, proxypp->as_meta, &plist_rd, timestamp, 0);
#endif
}
}
@ -3696,7 +3696,7 @@ int update_proxy_participant_plist_locked (struct proxy_participant *proxypp, se
nn_plist_mergein_missing (new_plist, datap, PP_PRISMTECH_NODE_NAME | PP_PRISMTECH_EXEC_NAME | PP_PRISMTECH_PROCESS_ID | PP_ENTITY_NAME, QP_USER_DATA);
nn_plist_mergein_missing (new_plist, &proxypp->e.gv->default_plist_pp, ~(uint64_t)0, ~(uint64_t)0);
if (seq && seq > proxypp->seq)
if (seq > proxypp->seq)
proxypp->seq = seq;
switch (source)
@ -3953,7 +3953,7 @@ uint64_t get_entity_instance_id (const struct q_globals *gv, const struct nn_gui
/* PROXY-ENDPOINT --------------------------------------------------- */
static void proxy_endpoint_common_init (struct entity_common *e, struct proxy_endpoint_common *c, enum entity_kind kind, const struct nn_guid *guid, nn_wctime_t tcreate, struct proxy_participant *proxypp, struct addrset *as, const nn_plist_t *plist)
static void proxy_endpoint_common_init (struct entity_common *e, struct proxy_endpoint_common *c, enum entity_kind kind, const struct nn_guid *guid, nn_wctime_t tcreate, seqno_t seq, struct proxy_participant *proxypp, struct addrset *as, const nn_plist_t *plist)
{
const char *name;
@ -3968,6 +3968,7 @@ static void proxy_endpoint_common_init (struct entity_common *e, struct proxy_en
c->as = ref_addrset (as);
c->topic = NULL; /* set from first matching reader/writer */
c->vendor = proxypp->vendor;
c->seq = seq;
if (plist->present & PP_GROUP_GUID)
c->group_guid = plist->group_guid;
@ -3991,7 +3992,7 @@ static void proxy_endpoint_common_fini (struct entity_common *e, struct proxy_en
/* PROXY-WRITER ----------------------------------------------------- */
int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const nn_plist_t *plist, struct nn_dqueue *dqueue, struct xeventq *evq, nn_wctime_t timestamp)
int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const nn_plist_t *plist, struct nn_dqueue *dqueue, struct xeventq *evq, nn_wctime_t timestamp, seqno_t seq)
{
struct proxy_participant *proxypp;
struct proxy_writer *pwr;
@ -4008,7 +4009,7 @@ int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const
}
pwr = ddsrt_malloc (sizeof (*pwr));
proxy_endpoint_common_init (&pwr->e, &pwr->c, EK_PROXY_WRITER, guid, timestamp, proxypp, as, plist);
proxy_endpoint_common_init (&pwr->e, &pwr->c, EK_PROXY_WRITER, guid, timestamp, seq, proxypp, as, plist);
ddsrt_avl_init (&pwr_readers_treedef, &pwr->readers);
pwr->n_reliable_readers = 0;
@ -4084,7 +4085,7 @@ int new_proxy_writer (struct q_globals *gv, const struct nn_guid *ppguid, const
return 0;
}
void update_proxy_writer (struct proxy_writer *pwr, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp)
void update_proxy_writer (struct proxy_writer *pwr, seqno_t seq, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp)
{
struct reader * rd;
struct pwr_rd_match * m;
@ -4093,6 +4094,9 @@ void update_proxy_writer (struct proxy_writer *pwr, struct addrset *as, const st
/* Update proxy writer endpoints (from SEDP alive) */
ddsrt_mutex_lock (&pwr->e.lock);
if (seq > pwr->c.seq)
{
pwr->c.seq = seq;
if (! addrset_eq_onesidederr (pwr->c.as, as))
{
#ifdef DDSI_INCLUDE_SSM
@ -4114,10 +4118,11 @@ void update_proxy_writer (struct proxy_writer *pwr, struct addrset *as, const st
}
update_qos_locked (&pwr->e, pwr->c.xqos, xqos, timestamp);
}
ddsrt_mutex_unlock (&pwr->e.lock);
}
void update_proxy_reader (struct proxy_reader *prd, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp)
void update_proxy_reader (struct proxy_reader *prd, seqno_t seq, struct addrset *as, const struct dds_qos *xqos, nn_wctime_t timestamp)
{
struct prd_wr_match * m;
nn_guid_t wrguid;
@ -4125,6 +4130,9 @@ void update_proxy_reader (struct proxy_reader *prd, struct addrset *as, const st
memset (&wrguid, 0, sizeof (wrguid));
ddsrt_mutex_lock (&prd->e.lock);
if (seq > prd->c.seq)
{
prd->c.seq = seq;
if (! addrset_eq_onesidederr (prd->c.as, as))
{
/* Update proxy reader endpoints (from SEDP alive) */
@ -4168,6 +4176,7 @@ void update_proxy_reader (struct proxy_reader *prd, struct addrset *as, const st
}
update_qos_locked (&prd->e, prd->c.xqos, xqos, timestamp);
}
ddsrt_mutex_unlock (&prd->e.lock);
}
@ -4219,7 +4228,7 @@ int delete_proxy_writer (struct q_globals *gv, const struct nn_guid *guid, nn_wc
/* PROXY-READER ----------------------------------------------------- */
int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const nn_plist_t *plist, nn_wctime_t timestamp
int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const struct nn_guid *guid, struct addrset *as, const nn_plist_t *plist, nn_wctime_t timestamp, seqno_t seq
#ifdef DDSI_INCLUDE_SSM
, int favours_ssm
#endif
@ -4239,7 +4248,7 @@ int new_proxy_reader (struct q_globals *gv, const struct nn_guid *ppguid, const
}
prd = ddsrt_malloc (sizeof (*prd));
proxy_endpoint_common_init (&prd->e, &prd->c, EK_PROXY_READER, guid, timestamp, proxypp, as, plist);
proxy_endpoint_common_init (&prd->e, &prd->c, EK_PROXY_READER, guid, timestamp, seq, proxypp, as, plist);
prd->deleting = 0;
#ifdef DDSI_INCLUDE_SSM