MojErr MojDbIndex::addWatch(const MojDbQueryPlan& plan, MojDbCursor& cursor, MojDbWatcher* watcher, MojDbReq& req)
{
MojAssert(watcher);
MojLogTrace(s_log);
// TODO: use interval tree instead of vector for watches
MojThreadWriteGuard guard(m_lock);
MojErr err = m_watcherVec.push(watcher);
MojErrCheck(err);
// update count map
watcher->domain(req.domain());
WatcherMap::Iterator iter;
err = m_watcherMap.find(req.domain(), iter);
MojErrCheck(err);
if (iter == m_watcherMap.end()) {
err = m_watcherMap.put(req.domain(), 1);
MojErrCheck(err);
} else {
iter.value() += 1;
if (iter.value() > WatchWarningThreshold) {
MojLogWarning(s_log, _T("db:'%s' has %zd watches open on index '%s - %s'"),
req.domain().data(), iter.value(), m_kind->id().data(), m_name.data());
}
}
MojLogInfo(s_log, _T("DbIndex_addWatch - '%s' on index '%s - %s'"),
req.domain().data(), m_kind->id().data(), m_name.data());
// drop lock before acquiring watcher mutex in init
guard.unlock();
watcher->init(this, plan.ranges(), plan.desc(), false);
return MojErrNone;
}
MojErr MojDbIndex::cancelWatch(MojDbWatcher* watcher)
{
LOG_TRACE("Entering function %s", __FUNCTION__);
MojAssert(isOpen());
MojAssert(watcher);
LOG_DEBUG("[db_mojodb] Index_cancelWatch: index name = %s; domain = %s\n",
this->name().data(), watcher->domain().data());
MojThreadWriteGuard guard(m_lock);
MojSize idx;
MojSize size = m_watcherVec.size();
for (idx = 0; idx < size; ++idx) {
if (m_watcherVec.at(idx).get() == watcher) {
MojErr err = m_watcherVec.erase(idx);
MojErrCheck(err);
WatcherMap::Iterator iter;
err = m_watcherMap.find(watcher->domain(), iter);
MojErrCheck(err);
if (iter != m_watcherMap.end()) {
iter.value() -= 1;
if (iter.value() == 0) {
bool found = false;
m_watcherMap.del(iter.key(), found);
MojAssert(found);
LOG_DEBUG("[db_mojodb] Index_cancelwatch: Domain Del found = %d; index name = %s; domain = %s\n",
(int)found, this->name().data(), watcher->domain().data());
}
}
break;
}
}
if (idx == size)
MojErrThrow(MojErrDbWatcherNotRegistered);
return MojErrNone;
}
MojErr MojDbIndex::cancelWatch(MojDbWatcher* watcher)
{
MojAssert(isOpen());
MojAssert(watcher);
MojLogTrace(s_log);
MojLogInfo(s_log, _T("Index_cancelWatch: index name = %s; domain = %s\n"),
this->name().data(), watcher->domain().data());
MojThreadWriteGuard guard(m_lock);
MojSize idx;
MojSize size = m_watcherVec.size();
for (idx = 0; idx < size; ++idx) {
if (m_watcherVec.at(idx).get() == watcher) {
MojErr err = m_watcherVec.erase(idx);
MojErrCheck(err);
WatcherMap::Iterator iter;
err = m_watcherMap.find(watcher->domain(), iter);
MojErrCheck(err);
if (iter != m_watcherMap.end()) {
iter.value() -= 1;
if (iter.value() == 0) {
bool found = false;
m_watcherMap.del(iter.key(), found);
MojAssert(found);
MojLogInfo(s_log, _T("Index_cancelwatch: Domain Del found = %d; index name = %s; domain = %s\n"),
(int)found, this->name().data(), watcher->domain().data());
}
}
break;
}
}
if (idx == size)
MojErrThrow(MojErrDbWatcherNotRegistered);
return MojErrNone;
}
MojErr MojDbIndex::addWatch(const MojDbQueryPlan& plan, MojDbCursor& cursor, MojDbWatcher* watcher, MojDbReq& req)
{
LOG_TRACE("Entering function %s", __FUNCTION__);
MojAssert(watcher);
// TODO: use interval tree instead of vector for watches
MojThreadWriteGuard guard(m_lock);
MojErr err = m_watcherVec.push(watcher);
MojErrCheck(err);
// update count map
watcher->domain(req.domain());
WatcherMap::Iterator iter;
err = m_watcherMap.find(req.domain(), iter);
MojErrCheck(err);
if (iter == m_watcherMap.end()) {
err = m_watcherMap.put(req.domain(), 1);
MojErrCheck(err);
} else {
iter.value() += 1;
if (iter.value() > WatchWarningThreshold) {
LOG_WARNING(MSGID_MOJ_DB_INDEX_WARNING, 4,
PMLOGKS("domain", req.domain().data()),
PMLOGKFV("iter", "%zd", iter.value()),
PMLOGKS("kindId", m_kind->id().data()),
PMLOGKS("name", m_name.data()),
"db:'domain' has 'iter' watches open on index 'kindId - name'");
}
}
LOG_DEBUG("[db_mojodb] DbIndex_addWatch - '%s' on index '%s - %s'",
req.domain().data(), m_kind->id().data(), m_name.data());
// drop lock before acquiring watcher mutex in init
guard.unlock();
watcher->init(this, plan.ranges(), plan.desc(), false);
return MojErrNone;
}