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[Qt] Add dbcache migration path

Github-Pull: #8407
Rebased-From: 893f379
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jonasschnelli authored and laanwj committed Jul 26, 2016
1 parent 0179a39 commit 45eba4b1e0658639bb92730723b987f05e171529
Showing with 24 additions and 1 deletion.
  1. +21 −0 src/qt/optionsmodel.cpp
  2. +3 −1 src/qt/optionsmodel.h
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@@ -43,6 +43,8 @@ void OptionsModel::Init(bool resetSettings)
if (resetSettings)
Reset();
checkAndMigrate();
QSettings settings;
// Ensure restart flag is unset on client startup
@@ -429,3 +431,22 @@ bool OptionsModel::isRestartRequired()
QSettings settings;
return settings.value("fRestartRequired", false).toBool();
}
void OptionsModel::checkAndMigrate()
{
// Migration of default values
// Check if the QSettings container was already loaded with this client version
QSettings settings;
static const char strSettingsVersionKey[] = "nSettingsVersion";
int settingsVersion = settings.contains(strSettingsVersionKey) ? settings.value(strSettingsVersionKey).toInt() : 0;
if (settingsVersion < CLIENT_VERSION)
{
// -dbcache was bumped from 100 to 300 in 0.13
// see https://github.com/bitcoin/bitcoin/pull/8273
// force people to upgrade to the new value if they are using 100MB
if (settingsVersion < 130000 && settings.contains("nDatabaseCache") && settings.value("nDatabaseCache").toLongLong() == 100)
settings.setValue("nDatabaseCache", (qint64)nDefaultDbCache);
settings.setValue(strSettingsVersionKey, CLIENT_VERSION);
}
}
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@@ -84,9 +84,11 @@ class OptionsModel : public QAbstractListModel
/* settings that were overriden by command-line */
QString strOverriddenByCommandLine;
/// Add option to list of GUI options overridden through command line/config file
// Add option to list of GUI options overridden through command line/config file
void addOverriddenOption(const std::string &option);
// Check settings version and upgrade default values if required
void checkAndMigrate();
Q_SIGNALS:
void displayUnitChanged(int unit);
void coinControlFeaturesChanged(bool);

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