public ConfigUpdateResponse updateConfigFromUI(
final UpdateConfigFromUI command,
final String md5,
Username username,
final LocalizedOperationResult result) {
UiBasedConfigUpdateCommand updateCommand =
new UiBasedConfigUpdateCommand(md5, command, result, cachedGoPartials);
UpdatedNodeSubjectResolver updatedConfigResolver = new UpdatedNodeSubjectResolver();
try {
ConfigSaveState configSaveState = updateConfig(updateCommand);
return latestUpdateResponse(
command, updateCommand, updatedConfigResolver, clonedConfigForEdit(), configSaveState);
} catch (ConfigFileHasChangedException e) {
CruiseConfig updatedConfig = handleMergeException(md5, updateCommand);
result.conflict(LocalizedMessage.string("SAVE_FAILED_WITH_REASON", e.getMessage()));
return latestUpdateResponse(
command, updateCommand, new OldNodeSubjectResolver(), updatedConfig, null);
} catch (ConfigUpdateCheckFailedException e) {
// result is already set
} catch (Exception e) {
ConfigMergeException mergeException = ExceptionUtils.getCause(e, ConfigMergeException.class);
ConfigMergePostValidationException mergePostValidationException =
ExceptionUtils.getCause(e, ConfigMergePostValidationException.class);
if (mergeException != null || mergePostValidationException != null) {
CruiseConfig updatedConfig = handleMergeException(md5, updateCommand);
result.conflict(LocalizedMessage.string("SAVE_FAILED_WITH_REASON", e.getMessage()));
return latestUpdateResponse(
command, updateCommand, new OldNodeSubjectResolver(), updatedConfig, null);
}
GoConfigInvalidException ex = ExceptionUtils.getCause(e, GoConfigInvalidException.class);
if (ex != null) {
CruiseConfig badConfig = ex.getCruiseConfig();
setMD5(md5, badConfig);
Validatable node = updatedConfigResolver.getNode(command, updateCommand.cruiseConfig());
BasicCruiseConfig.copyErrors(command.updatedNode(badConfig), node);
result.badRequest(LocalizedMessage.string("SAVE_FAILED"));
return new ConfigUpdateResponse(
badConfig,
node,
subjectFromNode(command, updatedConfigResolver, node),
updateCommand,
null);
} else {
result.badRequest(LocalizedMessage.string("SAVE_FAILED_WITH_REASON", e.getMessage()));
}
}
CruiseConfig newConfigSinceNoOtherConfigExists = clonedConfigForEdit();
setMD5(md5, newConfigSinceNoOtherConfigExists);
return latestUpdateResponse(
command,
updateCommand,
new OldNodeSubjectResolver(),
newConfigSinceNoOtherConfigExists,
null);
}
private CruiseConfig handleMergeException(String md5, UiBasedConfigUpdateCommand updateCommand) {
CruiseConfig updatedConfig;
try {
updateCommand.update(clonedConfigForEdit());
updatedConfig = updateCommand.cruiseConfig();
} catch (Exception oops) {
// Ignore this. We are trying to retain the user's input. However, if things have changed so
// massively that we cannot apply this update we cannot do anything.
// But hey, at least we tried...
updatedConfig = clonedConfigForEdit();
}
setMD5(md5, updatedConfig);
return updatedConfig;
}