#include <unistd.h>
#include <netdb.h>
+#include <RIC_message_types.h> // needed for route manager messages
+
/*
Passed to a symtab foreach callback to construct a list of pointers from
rmr_sym_foreach_class( rt->hash, 1, ep_counts, id ); // run endpoints in the active table
}
+// ------------ route manager communication -------------------------------------------------
+/*
+ Send a request for a table update to the route manager. Updates come in
+ async, so send and go.
+
+ pctx is the private context for the thread; ctx is the application context
+ that we need to be able to send the application ID in case rt mgr needs to
+ use it to idenfity us.
+
+ Returns 0 if we were not able to send a request.
+*/
+static int send_update_req( uta_ctx_t* pctx, uta_ctx_t* ctx ) {
+ rmr_mbuf_t* smsg;
+ int state = 0;
+
+ if( ctx->rtg_whid < 0 ) {
+ return state;
+ }
+
+ smsg = rmr_alloc_msg( pctx, 1024 );
+ if( smsg != NULL ) {
+ smsg->mtype = RMRRM_REQ_TABLE;
+ smsg->sub_id = 0;
+ snprintf( smsg->payload, 1024, "%s ts=%ld\n", ctx->my_name, (long) time( NULL ) );
+ rmr_vlog( RMR_VL_INFO, "rmr_rtc: requesting table: (%s) whid=%d\n", smsg->payload, ctx->rtg_whid );
+ smsg->len = strlen( smsg->payload ) + 1;
+
+ smsg = rmr_wh_send_msg( pctx, ctx->rtg_whid, smsg );
+ if( (state = smsg->state) != RMR_OK ) {
+ rmr_vlog( RMR_VL_INFO, "rmr_rtc: send failed: %d whid=%d\n", smsg->state, ctx->rtg_whid );
+ rmr_wh_close( ctx, ctx->rtg_whid ); // send failed, assume connection lost
+ ctx->rtg_whid = -1;
+ }
+
+ rmr_free_msg( smsg );
+ }
+
+ return state;
+}
+
+/*
+ Send an ack to the route table manager for a table ID that we are
+ processing. State is 1 for OK, and 0 for failed. Reason might
+ be populated if we know why there was a failure.
+
+ Context should be the PRIVATE context that we use for messages
+ to route manger and NOT the user's context.
+*/
+static void send_rt_ack( uta_ctx_t* ctx, int state, char* reason ) {
+ rmr_mbuf_t* smsg;
+
+ if( ctx == NULL || ctx->rtg_whid < 0 ) {
+ return;
+ }
+
+ if( ctx->flags & CFL_NO_RTACK ) { // don't ack if reading from file etc
+ return;
+ }
+
+ smsg = rmr_alloc_msg( ctx, 1024 );
+ if( smsg != NULL ) {
+ smsg->mtype = RMRRM_TABLE_STATE;
+ smsg->sub_id = 0;
+ snprintf( smsg->payload, 1024, "%s %s %s\n", state == RMR_OK ? "OK" : "ERR",
+ ctx->table_id == NULL ? "<id-missing>" : ctx->table_id, reason == NULL ? "" : reason );
+
+ smsg->len = strlen( smsg->payload ) + 1;
+
+ rmr_vlog( RMR_VL_INFO, "rmr_rtc: sending table state: (%s) state=%d whid=%d\n", smsg->payload, smsg->state, ctx->rtg_whid );
+ smsg = rmr_wh_send_msg( ctx, ctx->rtg_whid, smsg );
+ if( (state = smsg->state) != RMR_OK ) {
+ rmr_vlog( RMR_VL_WARN, "unable to send table state: %d\n", smsg->state );
+ rmr_wh_close( ctx, ctx->rtg_whid ); // send failed, assume connection lost
+ ctx->rtg_whid = -1;
+ }
+
+ rmr_free_msg( smsg );
+ }
+}
// ------------------------------------------------------------------------------------------------
/*
For a RT update, we expect:
- newrt|{start|end [hold]}
+ newrt | start | <table-id>
+ newrt | end | <count>
rte|<mtype>[,sender]|<endpoint-grp>[;<endpoint-grp>,...]
mse|<mtype>[,sender]|<sub-id>|<endpoint-grp>[;<endpoint-grp>,...]
mse| <mtype>[,sender] | <sub-id> | %meid
For a meid map update we expect:
- meid_map | start
+ meid_map | start | <table-id>
meid_map | end | <count> | <md5-hash>
mme_ar | <e2term-id> | <meid0> <meid1>...<meidn>
mme_del | <meid0> <meid1>...<meidn>
+
+ The pctx is our private context that must be used to send acks/status
+ messages back to the route manager. The regular ctx is the ctx that
+ the user has been given and thus that's where we have to hang the route
+ table we're working with.
*/
-static void parse_rt_rec( uta_ctx_t* ctx, char* buf, int vlevel ) {
+static void parse_rt_rec( uta_ctx_t* ctx, uta_ctx_t* pctx, char* buf, int vlevel ) {
int i;
int ntoks; // number of tokens found in something
int ngtoks;
rtable_ent_t* rte; // route table entry added
char* tokens[128];
char* tok; // pointer into a token or string
+ char wbuf[1024];
if( ! buf ) {
return;
case 'n': // newrt|{start|end}
tokens[1] = clip( tokens[1] );
if( strcmp( tokens[1], "end" ) == 0 ) { // wrap up the table we were building
+ if( ntoks >2 ) {
+ if( ctx->new_rtable->updates != atoi( tokens[2] ) ) { // count they added didn't match what we received
+ rmr_vlog( RMR_VL_ERR, "rmr_rtc: RT update had wrong number of records: received %d expected %s\n",
+ ctx->new_rtable->updates, tokens[2] );
+ snprintf( wbuf, sizeof( wbuf ), "missing table records: expected %s got %d\n", tokens[2], ctx->new_rtable->updates );
+ send_rt_ack( pctx, RMR_OK, wbuf );
+ uta_rt_drop( ctx->new_rtable );
+ ctx->new_rtable = NULL;
+ break;
+ }
+ }
+
if( ctx->new_rtable ) {
uta_rt_drop( ctx->old_rtable ); // time to drop one that was previously replaced
ctx->old_rtable = ctx->rtable; // currently active becomes old and allowed to 'drain'
rmr_vlog_force( RMR_VL_DEBUG, "new route table:\n" );
rt_stats( ctx->rtable );
}
+
+ send_rt_ack( pctx, RMR_OK, NULL );
} else {
if( DEBUG > 1 ) rmr_vlog_force( RMR_VL_DEBUG, "end of route table noticed, but one was not started!\n" );
ctx->new_rtable = NULL;
}
- } else { // start a new table.
- if( ctx->new_rtable != NULL ) { // one in progress? this forces it out
+ } else { // start a new table.
+ if( ctx->new_rtable != NULL ) { // one in progress? this forces it out
+ send_rt_ack( pctx, !RMR_OK, "table not complete" ); // nack the one that was pending as end never made it
+
if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "new table; dropping incomplete table\n" );
uta_rt_drop( ctx->new_rtable );
}
+ if( ctx->table_id != NULL ) {
+ free( ctx->table_id );
+ }
+ if( ntoks >2 ) {
+ ctx->table_id = strdup( tokens[2] );
+ } else {
+ ctx->table_id = NULL;
+ }
+
ctx->new_rtable = NULL;
ctx->new_rtable = uta_rt_clone( ctx->rtable ); // create by cloning endpoint and meidtentries from active table
+ ctx->new_rtable->updates = 0; // init count of entries received
if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "start of route table noticed\n" );
}
break;
uta_rt_drop( ctx->new_rtable );
}
+ if( ntoks >2 ) {
+ if( ctx->table_id != NULL ) {
+ free( ctx->table_id );
+ }
+ ctx->table_id = strdup( tokens[2] );
+ }
+
ctx->new_rtable = uta_rt_clone_all( ctx->rtable ); // start with a clone of everything (endpts and entries)
ctx->new_rtable->updates = 0; // init count of updates received
if( DEBUG > 1 || (vlevel > 1) ) rmr_vlog_force( RMR_VL_DEBUG, "start of rt update noticed\n" );
return;
}
- parse_rt_rec( ctx, rec, vlevel );
+ parse_rt_rec( ctx, NULL, rec, vlevel ); // no pvt context as we can't ack
}
if( DEBUG ) rmr_vlog_force( RMR_VL_DEBUG, "rmr_read_static: seed route table successfully parsed: %d records\n", rcount );
Code Review / ric-plt / lib / rmr.git / blobdiff