void gc_reduce(struct reformat *re, int LotNr, char subname[]) {
FILE *GCEDFH;
int i;
unsigned int DocID;
//lagrer hvilkene filer vi har slettet
GCEDFH = lotOpenFileNoCasheByLotNr(LotNr,"gced","a", 'e',subname);
for (i=0; i<NrofDocIDsInLot; i++) {
if ((REN_DocumentIndex(re, i)->Url[0] != '\0') && DIS_isDeleted(REN_DocumentIndex(re, i))) {
#ifdef DEBUG
printf("Adding url \"%s\" to gc file\n",REN_DocumentIndex(re, i)->Url);
#endif
DocID = LotDocIDOfset(LotNr) +i;
if (fwrite(&DocID,sizeof(DocID),1,GCEDFH) != 1) {
perror("can't write gc file");
}
}
}
fclose(GCEDFH);
}
int
gcdecide(int LotNr, char *subname, struct gcaoptFormat *gcaopt, time_t newest_document)
{
int i;
struct reformat *re;
FILE *DOCINDEXFH;
whisper_t whisper;
//åpner dokument indeks får å teste at vi har en, hvis ikke kan vi bare avslutte.
if ( (DOCINDEXFH = lotOpenFileNoCasheByLotNr(LotNr,"DocumentIndex","rb", 's',subname)) == NULL) {
#ifdef DEBUG
printf("lot dont have a DocumentIndex file\n");
#endif
return 0;
}
fclose(DOCINDEXFH);
blog(gcaopt->log,1,"Runing gc for collection \"%s\", lot nr %i",subname,LotNr);
if((re = reopen(LotNr, sizeof(struct DocumentIndexFormat), "DocumentIndex", subname, RE_COPYONCLOSE|RE_HAVE_4_BYTES_VERSION_PREFIX)) == NULL) {
perror("can't reopen()");
exit(1);
}
whisper = gcwhisper_read(subname);
//går gjenom alle på jakt etter de som kan slettes
for (i=0;i<NrofDocIDsInLot;i++) {
if (DIS_isDeleted(REN_DocumentIndex(re, i))) {
continue;
}
#ifdef DEBUG
#ifdef BLACK_BOX
printf("dokument \"%s\", lastSeen: %s",
REN_DocumentIndex(re, i)->Url,
ctime_s(&REN_DocumentIndex(re, i)->lastSeen));
#endif
#endif
#ifdef BLACK_BOX
if ((whisper & GCWHISPER_NOTOLD) == 0 &&
(((gcaopt->lastSeenHack == 1) && (REN_DocumentIndex(re, i)->lastSeen == 0))
|| ((REN_DocumentIndex(re, i)->lastSeen != 0) &&
(newest_document > (REN_DocumentIndex(re, i)->lastSeen + gcaopt->MaxAgeDiflastSeen))))) {
//sletter
DIS_delete(REN_DocumentIndex(re, i));
//sletter dokumentet i bb spesefike ting.
bbdocument_delete (REN_DocumentIndex(re, i)->Url, subname);
blog(gcaopt->log,2,"dokument \"%s\" can be deleted. Last seen: %s, DocID %u",REN_DocumentIndex(re, i)->Url,ctime_s(&REN_DocumentIndex(re, i)->lastSeen),LotDocIDOfset(LotNr) +i);
++gcaopt->gced;
}
else {
++gcaopt->keept;
}
#endif
}
//markerer hva vi kan slette.
gc_reduce(re, LotNr, subname);
reclose(re);
//trunkerer reposetoryet.
gcrepo(LotNr, subname);
//vasker iindex
struct IndekserOptFormat IndekserOpt;
IndekserOpt.optMustBeNewerThen = 0;
IndekserOpt.optAllowDuplicates = 0;
IndekserOpt.optValidDocIDs = NULL;
IndekserOpt.sequenceMode =1;
IndekserOpt.garbareCollection = 1;
for (i=0;i<64;i++) {
Indekser(LotNr,"Main",i,subname,&IndekserOpt);
}
for (i=0;i<64;i++) {
Indekser(LotNr,"acl_allow",i,subname,&IndekserOpt);
}
for (i=0;i<64;i++) {
Indekser(LotNr,"acl_denied",i,subname,&IndekserOpt);
}
for (i=0;i<64;i++) {
Indekser(LotNr,"attributes",i,subname,&IndekserOpt);
}
//siden vi nå har lagt til alle andringer fra rev index kan vi nå slettet gced filen også
//Indekser_deleteGcedFile(LotNr, subname);
lotDeleteFile("gced", LotNr, subname);
return 0;
}