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a bit better appoach

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Blue 2019-04-29 00:34:28 +03:00
parent 88ea4cf3ac
commit d09fef5a34
3 changed files with 168 additions and 104 deletions
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56
core/archive.cpp
View File

@ -206,6 +206,62 @@ Shared::Message Core::Archive::oldest()
return getElement(oldestId());
}
unsigned int Core::Archive::addElements(const std::list<Shared::Message>& messages)
{
if (!opened) {
throw Closed("addElements", jid.toStdString());
}
int success = 0;
int rc = 0;
MDB_val lmdbKey, lmdbData;
MDB_txn *txn;
mdb_txn_begin(environment, NULL, 0, &txn);
std::list<Shared::Message>::const_iterator itr = messages.begin();
while (rc == 0 && itr != messages.end()) {
const Shared::Message& message = *itr;
QByteArray ba;
QDataStream ds(&ba, QIODevice::WriteOnly);
message.serialize(ds);
quint64 stamp = message.getTime().toMSecsSinceEpoch();
const std::string& id = message.getId().toStdString();
lmdbKey.mv_size = id.size();
lmdbKey.mv_data = (char*)id.c_str();
lmdbData.mv_size = ba.size();
lmdbData.mv_data = (uint8_t*)ba.data();
rc = mdb_put(txn, main, &lmdbKey, &lmdbData, MDB_NOOVERWRITE);
if (rc == 0) {
MDB_val orderKey;
orderKey.mv_size = 8;
orderKey.mv_data = (uint8_t*) &stamp;
rc = mdb_put(txn, order, &orderKey, &lmdbKey, 0);
if (rc) {
qDebug() << "An element couldn't be inserted into the index, aborting the transaction" << mdb_strerror(rc);
} else {
success++;
}
} else {
if (rc == MDB_KEYEXIST) {
rc = 0;
} else {
qDebug() << "An element couldn't been added to the archive, aborting the transaction" << mdb_strerror(rc);
}
}
}
if (rc != 0) {
mdb_txn_abort(txn);
success = 0;
} else {
mdb_txn_commit(txn);
}
return success;
}
QString Core::Archive::oldestId()
{
if (!opened) {

201
core/contact.cpp
View File

@ -108,7 +108,9 @@ unsigned int Core::Contact::groupsCount() const
void Core::Contact::addMessageToArchive(const Shared::Message& msg)
{
hisoryCache.emplace_back(msg);
if (msg.getId().size() > 0 && msg.getBody().size() > 0) {
hisoryCache.emplace_back(msg);
}
}
void Core::Contact::requestHistory(int count, const QString& before)
@ -150,57 +152,37 @@ void Core::Contact::performRequest(int count, const QString& before)
switch (archiveState) {
case empty:
emit needEarlierHistory(before, "", QDateTime(), QDateTime());
emit needHistory(before, "", QDateTime(), QDateTime());
break;
case chunk:
case beginning: {
bool found = false;
if (appendCache.size() != 0) {
for (std::list<Shared::Message>::const_reverse_iterator itr = appendCache.rbegin(), end = appendCache.rend(); itr != end; ++itr) {
const Shared::Message& msg = *itr;
if (found) {
responseCache.emplace_front(msg);
} else {
if (msg.getId() == before) {
found = true;
responseCache.emplace_front(*itr);
}
}
if (responseCache.size() == count) {
break;
}
}
if (responseCache.size() == count) {
nextRequest();
break;
}
}
if (found) {
requestedBefore = responseCache.front().getId();
emit needEarlierHistory(requestedBefore, "", QDateTime(), QDateTime());
} else {
if (requestFromArchive(before)) {
nextRequest();
}
}
case beginning:
if (count != -1) {
requestCache.emplace_back(requestedCount, before);
requestedCount = -1;
}
emit needHistory("", archive->newestId(), QDateTime(), QDateTime());
break;
case end: {
case end:
if (count != -1) {
bool found = requestFromArchive(before);
if (found) {
int rSize = responseCache.size();
if (rSize < count) {
if (rSize != 0) {
requestedBefore = responseCache.front().getId();
emit needEarlierHistory(responseCache.front().getId(), "", QDateTime(), QDateTime());
emit needHistory(responseCache.front().getId(), "", QDateTime(), QDateTime());
} else {
requestedBefore = before;
emit needEarlierHistory(before, "", QDateTime(), QDateTime());
emit needHistory(before, "", QDateTime(), QDateTime());
}
} else {
nextRequest();
}
} else {
requestCache.emplace_back(requestedCount, before);
requestedCount = -1;
emit needHistory(archive->oldestId(), "", QDateTime(), QDateTime());
}
} else {
emit needHistory(archive->oldestId(), "", QDateTime(), QDateTime());
}
break;
case complete:
@ -212,8 +194,7 @@ void Core::Contact::performRequest(int count, const QString& before)
}
}
bool Core::Contact::requestFromArchive(const QString& before)
{
bool Core::Contact::requestFromArchive(const QString& before) {
std::list<Shared::Message> arc;
QString lBefore;
if (responseCache.size() > 0) {
@ -229,7 +210,7 @@ bool Core::Contact::requestFromArchive(const QString& before)
} catch (Archive::NotFound e) {
requestCache.emplace_back(requestedCount, before);
requestedCount = -1;
requestEarlierToSync();
emit needHistory(archive->oldestId(), "", QDateTime(), QDateTime());
return false;
}
} else {
@ -239,79 +220,107 @@ bool Core::Contact::requestFromArchive(const QString& before)
//may be even it's a signal that the history is now complete?
return true;
} catch (Archive::NotFound e) {
requestEarlierToSync();
emit needHistory(archive->oldestId(), "", QDateTime(), QDateTime());
return false;
}
}
}
void Core::Contact::requestEarlierToSync()
{
switch (archiveState) {
case empty:
break;
case beginning: //need to reach complete
case chunk: //need to reach end
emit needEarlierHistory("", archive->newestId(), QDateTime(), QDateTime());
break;
case end: //need to reach complete
emit needEarlierHistory(archive->oldestId(), "", QDateTime(), QDateTime());
break;
case complete: //nothing to sync
break;
}
}
void Core::Contact::appendMessageToArchive(const Shared::Message& msg)
{
if (msg.getId().size() > 0 && msg.getBody().size() > 0) {
switch (archiveState) {
case empty:
if (archive->addElement(msg)) {
archiveState = end;
};
requestHistory(-1, msg.getId());
break;
case beginning:
appendCache.emplace_back(msg);
requestHistory(-1, msg.getId());
break;
case end:
archive->addElement(msg);
break;
case chunk:
appendCache.emplace_back(msg);
requestHistory(-1, msg.getId());
break;
case complete:
archive->addElement(msg);
break;
const QString& id = msg.getId();
if (id.size() > 0) {
if (msg.getBody().size() > 0) {
switch (archiveState) {
case empty:
if (archive->addElement(msg)) {
archiveState = end;
};
if (!syncronizing) {
requestHistory(-1, id);
}
break;
case beginning:
appendCache.emplace_back(msg);
if (!syncronizing) {
requestHistory(-1, id);
}
break;
case end:
archive->addElement(msg);
break;
case chunk:
appendCache.emplace_back(msg);
if (!syncronizing) {
requestHistory(-1, id);
}
break;
case complete:
archive->addElement(msg);
break;
}
} else if (!syncronizing && archiveState == empty) {
requestHistory(-1, id);
}
}
}
void Core::Contact::flushMessagesToArchive(bool finished, const QString& lastId)
void Core::Contact::flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId)
{
unsigned int amount(0);
if (hisoryCache.size() > 0) {
amount = archive->addElements(hisoryCache);
archive->addElements(hisoryCache);
hisoryCache.clear();
}
if (requestedCount == -1) {
if (amount >= requestedCount - responseCache.size()) {
if (requestFromArchive(requestedBefore)){
switch (archiveState) {
break;
case beginning:
if (finished) {
archiveState = complete;
nextRequest();
return;
} else {
emit needHistory("", lastId, QDateTime(), QDateTime());
}
}
if (!finished) {
if (lastId.size() != 0) {
case chunk:
if (finished) {
archiveState = end;
nextRequest();
} else {
emit needHistory("", lastId, QDateTime(), QDateTime());
}
}
} else {
break;
case empty:
archiveState = end;
case end:
if (finished) {
archiveState = complete;
archive->setFromTheBeginning(true);
}
if (requestedCount != -1) {
QString before;
if (responseCache.size() > 0) {
before = responseCache.front().getId();
} else {
before = requestedBefore;
}
if (!requestFromArchive(before)) {
qDebug("Something went terrible wrong flushing messages to the archive");
}
if (requestedCount < responseCache.size()) {
if (archiveState == complete) {
nextRequest();
} else {
emit needHistory(firstId, "", QDateTime(), QDateTime());
}
} else {
nextRequest();
}
} else {
nextRequest();
}
break;
case complete:
nextRequest();
break;
}
}

15
core/contact.h
View File

@ -41,7 +41,7 @@ public:
};
Contact(const QString& pJid, const QString& account, QObject* parent = 0);
~Contact();
ArchiveState getArchiveState() const;
QString getName() const;
void setName(const QString& n);
@ -52,17 +52,17 @@ public:
unsigned int groupsCount() const;
void addMessageToArchive(const Shared::Message& msg);
void appendMessageToArchive(const Shared::Message& msg);
void flushMessagesToArchive(bool finished, const QString& lastId);
void flushMessagesToArchive(bool finished, const QString& firstId, const QString& lastId);
void requestHistory(int count, const QString& before);
signals:
void groupAdded(const QString& name);
void groupRemoved(const QString& name);
void nameChanged(const QString& name);
void subscriptionStateChanged(Shared::SubscriptionState state);
void historyResponse(const std::list<Shared::Message>& messages);
void needEarlierHistory(const QString& before, const QString& after, const QDateTime& from, const QDateTime& to);
void needHistory(const QString& before, const QString& after, const QDateTime& from, const QDateTime& to);
public:
const QString jid;
@ -72,7 +72,7 @@ private:
ArchiveState archiveState;
Archive* archive;
Shared::SubscriptionState subscriptionState;
bool syncronizing;
int requestedCount;
QString requestedBefore;
@ -80,12 +80,11 @@ private:
std::list<Shared::Message> appendCache;
std::list<Shared::Message> responseCache;
std::list<std::pair<int, QString>> requestCache;
private:
void nextRequest();
void performRequest(int count, const QString& before);
bool requestFromArchive(const QString& before);
void requestEarlierToSync();
};
}