int MergingKDB::synchronize (KeySet & returned, Key & parentKey, ThreeWayMerge & merger)
{
try
{
// write our config
int ret = KDB::set (returned, parentKey);
// update our config (if no conflict)
KDB::get (returned, parentKey);
return ret;
}
catch (KDBException const &)
{
// a conflict occurred, see if we can solve it with the merger
// refresh the key database
KeySet theirs = returned.dup ();
KDB::get (theirs, parentKey);
// try to merge
MergeResult result = merger.mergeKeySet (MergeTask (BaseMergeKeys (base, parentKey), OurMergeKeys (returned, parentKey),
TheirMergeKeys (theirs, parentKey), parentKey));
if (!result.hasConflicts ())
{
// hurray, we solved the issue
KeySet resultKeys = result.getMergedKeys ();
int ret = KDB::set (resultKeys, parentKey);
base = resultKeys;
return ret;
}
else
{
// nothing we can do anymore
KeySet conflictSet = result.getConflictSet ();
throw MergingKDBException (parentKey, conflictSet);
}
}
}
int MergingKDB::get (KeySet & returned, std::string const & keyname)
{
int ret = KDB::get (returned, keyname);
base = returned.dup ();
return ret;
}
int MergingKDB::get (KeySet & returned, Key & parentKey)
{
int ret = KDB::get (returned, parentKey);
base = returned.dup ();
return ret;
}
int EditorCommand::execute (Cmdline const & cl)
{
#ifdef _WIN32
throw EditorNotAvailable ();
#endif
int argc = cl.arguments.size ();
if (argc < 1)
{
throw invalid_argument ("wrong number of arguments, 1 needed");
}
Key root = cl.createKey (0);
KeySet ours;
KDB kdb;
kdb.get (ours, root);
KeySet oursToEdit = ours.cut (root);
KeySet original = oursToEdit.dup ();
if (cl.strategy == "validate")
{
prependNamespace (oursToEdit, cl.ns);
oursToEdit.cut (prependNamespace (root, cl.ns));
}
// export it to file
string format = cl.format;
if (argc > 1) format = cl.arguments[1];
Modules modules;
PluginPtr plugin = modules.load (format);
tmpFile ();
if (cl.verbose) std::cout << "filename set to " << filename << std::endl;
Key errorKey (root);
errorKey.setString (filename);
if (plugin->set (oursToEdit, errorKey) == -1)
{
printWarnings (cerr, errorKey);
printError (cerr, errorKey);
return 11;
}
printWarnings (cerr, errorKey);
// start editor
if (cl.verbose) std::cout << "running editor with " << filename << std::endl;
if (!cl.editor.empty ())
{
if (!runEditor (cl.editor, filename))
{
std::cerr << "Could not run editor " << cl.editor << std::endl;
return 12;
}
}
else
{
if (!runAllEditors (filename))
{
std::cerr << "Could not run any editor, please change /sw/elektra/kdb/#0/current/editor" << std::endl;
return 12;
}
}
// import from the file
KeySet importedKeys;
plugin->get (importedKeys, errorKey);
importedKeys = importedKeys.cut (root);
printWarnings (cerr, errorKey);
printError (cerr, errorKey);
if (cl.strategy == "validate")
{
applyMeta (importedKeys, original);
kdb.set (importedKeys, root);
printWarnings (cerr, root);
return 0;
}
ThreeWayMerge merger;
MergeHelper helper;
helper.configureMerger (cl, merger);
MergeResult result = merger.mergeKeySet (
MergeTask (BaseMergeKeys (oursToEdit, root), OurMergeKeys (oursToEdit, root), TheirMergeKeys (importedKeys, root), root));
helper.reportResult (cl, result, cout, cerr);
int ret = 13;
if (!result.hasConflicts ())
{
if (cl.verbose)
{
cout << "The merged keyset with strategy " << cl.strategy << " is:" << endl;
cout << result.getMergedKeys ();
}
KeySet resultKeys = result.getMergedKeys ();
if (cl.verbose) std::cout << "about to write result keys " << resultKeys << std::endl;
ours.append (resultKeys);
try
{
kdb.set (ours, root);
if (cl.verbose) std::cout << "successful, cleaning up " << filename << std::endl;
unlink (filename.c_str ());
ret = 0;
}
catch (KDBException const & e)
{
std::cout << "Import of configuration failed with the error:\n";
std::cout << e.what ();
std::cout << "\n\n";
std::cout << "Your changes are not lost." << std::endl;
std::cout << "Please fix, import and remove \"" << filename << '"' << std::endl;
ret = 14;
}
}
else
{
std::cout << "Import not successful, please import and remove \"" << filename << '"' << std::endl;
}
return ret;
}