int
CollectorList::sendUpdates (int cmd, ClassAd * ad1, ClassAd* ad2, bool nonblocking) {
int success_count = 0;
if ( ! adSeq) {
adSeq = new DCCollectorAdSequences();
}
// advance the sequence numbers for these ads
//
time_t now = time(NULL);
DCCollectorAdSeq * seqgen = adSeq->getAdSeq(*ad1);
if (seqgen) { seqgen->advance(now); }
this->rewind();
DCCollector * daemon;
while (this->next(daemon)) {
dprintf( D_FULLDEBUG,
"Trying to update collector %s\n",
daemon->addr() );
if( daemon->sendUpdate(cmd, ad1, *adSeq, ad2, nonblocking) ) {
success_count++;
}
}
return success_count;
}
// Copy constructor for the Ad Sequence Number
DCCollectorAdSeq::DCCollectorAdSeq( const DCCollectorAdSeq &ref )
{
const char *tmp;
tmp = ref.getName( );
if ( tmp ) {
this->Name = strdup( tmp );
} else {
this->Name = NULL;
}
tmp = ref.getMyType( );
if ( tmp ) {
this->MyType = strdup( tmp );
} else {
this->MyType = NULL;
}
tmp = ref.getMachine( );
if ( tmp ) {
this->Machine = strdup( tmp );
} else {
this->Machine = NULL;
}
this->sequence = ref.getSequence( );
}
// Get the sequence number
unsigned
DCCollectorAdSeqMan::getSequence( const ClassAd *ad )
{
int adNum;
char *name = NULL;
char *myType = NULL;
char *machine = NULL;
DCCollectorAdSeq *adSeq = NULL;
// Extract the 'key' attributes of the ClassAd
ad->LookupString( ATTR_NAME, &name );
ad->LookupString( ATTR_MY_TYPE, &myType );
ad->LookupString( ATTR_MACHINE, &machine );
// Walk through the ads that we know of, find a match...
for ( adNum = 0; adNum < numAds; adNum++ ) {
if ( adSeqInfo[adNum]->Match( name, myType, machine ) ) {
adSeq = adSeqInfo[adNum];
break;
}
}
// No matches; create a new one, add to the list
if ( ! adSeq ) {
adSeq = new DCCollectorAdSeq ( name, myType, machine );
adSeqInfo[numAds++] = adSeq;
}
// Free up memory...
if ( name ) {
free( name );
name = NULL;
}
if ( myType ) {
free( myType );
myType = NULL;
}
if ( machine ) {
free( machine );
machine = NULL;
}
// Finally, return the sequence
return adSeq->getSequenceAndIncrement( );
}
bool
DCCollector::sendUpdate( int cmd, ClassAd* ad1, DCCollectorAdSequences& adSeq, ClassAd* ad2, bool nonblocking )
{
if( ! _is_configured ) {
// nothing to do, treat it as success...
return true;
}
if(!use_nonblocking_update || !daemonCore) {
// Either caller OR config may turn off nonblocking updates.
// In other words, both must be true to enable nonblocking.
// Also, must have DaemonCore intialized.
nonblocking = false;
}
// Add start time & seq # to the ads before we publish 'em
if ( ad1 ) {
ad1->Assign(ATTR_DAEMON_START_TIME, startTime);
}
if ( ad2 ) {
ad2->Assign(ATTR_DAEMON_START_TIME, startTime);
}
if ( ad1 ) {
DCCollectorAdSeq* seqgen = adSeq.getAdSeq(*ad1);
if (seqgen) {
long long seq = seqgen->getSequence();
ad1->Assign(ATTR_UPDATE_SEQUENCE_NUMBER, seq);
if (ad2) { ad2->Assign(ATTR_UPDATE_SEQUENCE_NUMBER, seq); }
}
}
// Prior to 7.2.0, the negotiator depended on the startd
// supplying matching MyAddress in public and private ads.
if ( ad1 && ad2 ) {
ad2->CopyAttribute(ATTR_MY_ADDRESS,ad1);
}
// We never want to try sending an update to port 0. If we're
// about to try that, and we're trying to talk to a local
// collector, we should try re-reading the address file and
// re-setting our port.
if( _port == 0 ) {
dprintf( D_HOSTNAME, "About to update collector with port 0, "
"attempting to re-read address file\n" );
if( readAddressFile(_subsys) ) {
_port = string_to_port( _addr );
parseTCPInfo(); // update use_tcp
dprintf( D_HOSTNAME, "Using port %d based on address \"%s\"\n",
_port, _addr );
}
}
if( _port <= 0 ) {
// If it's still 0, we've got to give up and fail.
std::string err_msg;
formatstr(err_msg, "Can't send update: invalid collector port (%d)",
_port );
newError( CA_COMMUNICATION_ERROR, err_msg.c_str() );
return false;
}
//
// We don't want the collector to send TCP updates to itself, since
// this could cause it to deadlock. Since the only ad a collector
// will ever advertise is its own, only check for *_COLLECTOR_ADS.
//
if( cmd == UPDATE_COLLECTOR_AD || cmd == INVALIDATE_COLLECTOR_ADS ) {
if( daemonCore ) {
const char * myOwnSinful = daemonCore->InfoCommandSinfulString();
if( myOwnSinful == NULL ) {
dprintf( D_ALWAYS, "Unable to determine my own address, will not update or invalidate collector ad to avoid potential deadlock.\n" );
return false;
}
if( _addr == NULL ) {
dprintf( D_ALWAYS, "Failing attempt to update or invalidate collector ad because of missing daemon address (probably an unresolved hostname; daemon name is '%s').\n", _name );
return false;
}
if( strcmp( myOwnSinful, _addr ) == 0 ) {
EXCEPT( "Collector attempted to send itself an update.\n" );
}
}
}
if( use_tcp ) {
return sendTCPUpdate( cmd, ad1, ad2, nonblocking );
}
return sendUDPUpdate( cmd, ad1, ad2, nonblocking );
}
