Method persist

fdbclient/ClusterConnectionFile.actor.cpp:148–182

Writes the connection string to the cluster file

// Writes the connection string to the cluster file
Future<bool> ClusterConnectionFile::persist() {
	setPersisted();

	if (filename.size()) {
		try {
			atomicReplace(filename,
			              "# DO NOT EDIT!\n# This file is auto-generated, it is not to be edited by hand\n" +
			                  cs.toString().append("\n"));

			Future<bool> isUpToDate = IClusterConnectionRecord::upToDate();

			// The implementation of upToDate in this class is synchronous
			ASSERT(isUpToDate.isReady());

			if (!isUpToDate.get()) {
				// This should only happen in rare scenarios where multiple processes are updating the same file to
				// different values simultaneously In that case, we don't have any guarantees about which file will
				// ultimately be written
				TraceEvent(SevWarnAlways, "ClusterFileChangedAfterReplace")
				    .detail("Filename", filename)
				    .detail("ConnectionString", cs.toString());
				return false;
			}

			return true;
		} catch (Error& e) {
			TraceEvent(SevWarnAlways, "UnableToChangeConnectionFile")
			    .error(e)
			    .detail("Filename", filename)
			    .detail("ConnectionString", cs.toString());
		}
	}

	return false;
}