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Merge pull request #15594 from huffman/feat/appconfig

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DEV-54: Add support for application config
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Shannon Romano 2019-05-21 10:01:19 -07:00 committed by GitHub
commit 8d36b90b8b
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1 changed files with 45 additions and 0 deletions
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45
interface/src/main.cpp
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@ -75,6 +75,7 @@ int main(int argc, const char* argv[]) {
QCommandLineOption helpOption = parser.addHelpOption();
QCommandLineOption urlOption("url", "", "value");
QCommandLineOption noLauncherOption("no-launcher", "Do not execute the launcher");
QCommandLineOption noUpdaterOption("no-updater", "Do not show auto-updater");
QCommandLineOption checkMinSpecOption("checkMinSpec", "Check if machine meets minimum specifications");
QCommandLineOption runServerOption("runServer", "Whether to run the server");
@ -84,6 +85,7 @@ int main(int argc, const char* argv[]) {
QCommandLineOption overrideScriptsPathOption(SCRIPTS_SWITCH, "set scripts <path>", "path");
parser.addOption(urlOption);
parser.addOption(noLauncherOption);
parser.addOption(noUpdaterOption);
parser.addOption(checkMinSpecOption);
parser.addOption(runServerOption);
@ -106,6 +108,49 @@ int main(int argc, const char* argv[]) {
Q_UNREACHABLE();
}
QString applicationPath;
{
// A temporary application instance is needed to get the location of the running executable
// Tests using high_resolution_clock show that this takes about 30-50 microseconds (on my machine, YMMV)
// If we wanted to avoid the QCoreApplication, we would need to write our own
// cross-platform implementation.
QCoreApplication tempApp(argc, const_cast<char**>(argv));
applicationPath = QCoreApplication::applicationDirPath();
}
static const QString APPLICATION_CONFIG_FILENAME = "config.json";
QDir applicationDir(applicationPath);
QFile configFile(applicationDir.filePath(APPLICATION_CONFIG_FILENAME));
if (configFile.exists()) {
if (!configFile.open(QIODevice::ReadOnly)) {
qWarning() << "Found application config, but could not open it";
} else {
auto contents = configFile.readAll();
QJsonParseError error;
auto doc = QJsonDocument::fromJson(contents, &error);
if (error.error) {
qWarning() << "Found application config, but could not parse it: " << error.errorString();
} else {
static const QString LAUNCHER_PATH_KEY = "launcherPath";
QString launcherPath = doc.object()[LAUNCHER_PATH_KEY].toString();
if (!launcherPath.isEmpty()) {
if (!parser.isSet(noLauncherOption)) {
qDebug() << "Found a launcherPath in application config. Starting launcher.";
QProcess launcher;
launcher.setProgram(launcherPath);
launcher.startDetached();
return 0;
} else {
qDebug() << "Found a launcherPath in application config, but the launcher"
" has been suppressed. Continuing normal execution.";
}
}
}
}
}
// Early check for --traceFile argument
auto tracer = DependencyManager::set<tracing::Tracer>();
const char * traceFile = nullptr;