void TrackingSyncSource::checkStatus(SyncSourceReport &changes)
{
// use the most reliable (and most expensive) method by default
ChangeMode mode = CHANGES_FULL;
// assume that we do a regular sync, with reusing stored information
// if possible
string oldRevision = m_metaNode->readProperty("databaseRevision");
if (!oldRevision.empty()) {
string newRevision = databaseRevision();
SE_LOG_DEBUG(this, NULL, "old database revision '%s', new revision '%s'",
oldRevision.c_str(),
newRevision.c_str());
if (newRevision == oldRevision) {
SE_LOG_DEBUG(this, NULL, "revisions match, no item changes");
mode = CHANGES_NONE;
}
}
if (mode == CHANGES_FULL) {
SE_LOG_DEBUG(this, NULL, "using full item scan to detect changes");
}
detectChanges(*m_trackingNode, mode);
// copy our item counts into the report
changes.setItemStat(ITEM_LOCAL, ITEM_ADDED, ITEM_TOTAL, getNewItems().size());
changes.setItemStat(ITEM_LOCAL, ITEM_UPDATED, ITEM_TOTAL, getUpdatedItems().size());
changes.setItemStat(ITEM_LOCAL, ITEM_REMOVED, ITEM_TOTAL, getDeletedItems().size());
changes.setItemStat(ITEM_LOCAL, ITEM_ANY, ITEM_TOTAL, getAllItems().size());
}
int main(){
height = 5, width = 5;
freopen("rays.in", "r", stdin);
initialize();
getInputAtoms();
getHitOrder();
detectChanges();
printBoard();
}
void TrackingSyncSource::beginSync(const std::string &lastToken, const std::string &resumeToken)
{
// use the most reliable (and most expensive) method by default
ChangeMode mode = CHANGES_FULL;
// resume token overrides the normal token; safe to ignore in most
// cases and this detectChanges() is done independently of the
// token, but let's do it right here anyway
string token;
if (!resumeToken.empty()) {
token = resumeToken;
} else {
token = lastToken;
}
// slow sync if token is empty
if (token.empty()) {
SE_LOG_DEBUG(this, NULL, "slow sync or testing, do full item scan to detect changes");
mode = CHANGES_SLOW;
} else {
string oldRevision = m_metaNode->readProperty("databaseRevision");
if (!oldRevision.empty()) {
string newRevision = databaseRevision();
SE_LOG_DEBUG(this, NULL, "old database revision '%s', new revision '%s'",
oldRevision.c_str(),
newRevision.c_str());
if (newRevision == oldRevision) {
SE_LOG_DEBUG(this, NULL, "revisions match, no item changes");
mode = CHANGES_NONE;
}
// Reset old revision. If anything goes wrong, then we
// don't want to rely on a possibly incorrect optimization.
m_metaNode->setProperty("databaseRevision", "");
m_metaNode->flush();
}
}
if (mode == CHANGES_FULL) {
SE_LOG_DEBUG(this, NULL, "using full item scan to detect changes");
}
detectChanges(*m_trackingNode, mode);
}
