bool
OfflineCollectorPlugin::expire (
ClassAd &ad )
{
classad::Value result;
bool val;
dprintf (
D_FULLDEBUG,
"In OfflineCollectorPlugin::expire()\n" );
/* bail out if the plug-in is not enabled, or if no ABSENT_REQUIREMENTS
have been defined */
if ( !enabled() || !AbsentReq ) {
return false; // return false tells collector to delete this ad
}
/* for now, if the ad is of any type other than a startd ad, bail out. currently
absent ads only supported for ads of type Machine, because our offline storage
assumes that. */
if ( strcmp(ad.GetMyTypeName(),STARTD_ADTYPE) ) {
return false; // return false tells collector to delete this ad
}
/* The ad may be a STARTD_PVT_ADTYPE, even though GetMyTypeName() claims
it is a STARTD_ADTYPE. Sigh. This is because the startd sends private
ads w/ the wrong type, because the query object queries private ads w/ the
wrong type. If I were to fix the startd to label private ads with the proper
type, an incompatibility between startd/negotiator would have to be dealt with.
So here we try to distinguish if this ad is really a STARTD_PVT_ADTYPE by seeing
if a Capability attr is present and a State attr is not present. */
if ( ad.Lookup(ATTR_CAPABILITY) && !ad.Lookup(ATTR_STATE) ) {
// looks like a private ad, we don't want to store these
return false; // return false tells collector to delete this ad
}
/* If the ad is alraedy has ABSENT=True and it is expiring, then
let it be deleted as in this case it already sat around absent
for the absent lifetime. */
bool already_absent = false;
ad.LookupBool(ATTR_ABSENT,already_absent);
if (already_absent) {
MyString s;
const char *key = makeOfflineKey(ad,s);
if (key) {
persistentRemoveAd(key);
}
return false; // return false tells collector to delete this ad
}
/* Test is ad against the absent requirements expression, and
mark the ad absent if true */
if (EvalExprTree(AbsentReq,&ad,NULL,result) &&
result.IsBooleanValue(val) && val)
{
int lifetime, timestamp;
lifetime = param_integer (
"ABSENT_EXPIRE_ADS_AFTER",
60 * 60 * 24 * 30 ); // default expire absent ads in a month
if ( lifetime == 0 ) lifetime = INT_MAX; // 0 means forever
ad.Assign ( ATTR_ABSENT, true );
ad.Assign ( ATTR_CLASSAD_LIFETIME, lifetime );
timestamp = time(NULL);
ad.Assign(ATTR_LAST_HEARD_FROM, timestamp);
ad.Assign ( ATTR_MY_CURRENT_TIME, timestamp );
persistentStoreAd(NULL,ad);
// if we marked this ad as absent, we want to keep it in the collector
return true; // return true tells the collector to KEEP this ad
}
return false; // return false tells collector to delete this ad
}
