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// Copyright (C) 2014 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.git.validators;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.events.RefReceivedEvent;
import com.google.gerrit.server.validators.ValidationException;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.transport.ReceiveCommand;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.List;
public class RefOperationValidators {
private static final GetErrorMessages GET_ERRORS = new GetErrorMessages();
private static final Logger LOG = LoggerFactory
.getLogger(RefOperationValidators.class);
public interface Factory {
RefOperationValidators create(Project project, IdentifiedUser user, ReceiveCommand cmd);
}
public static ReceiveCommand getCommand(RefUpdate update, ReceiveCommand.Type type) {
return new ReceiveCommand(update.getOldObjectId(), update.getNewObjectId(),
update.getName(), type);
}
private final RefReceivedEvent event;
private final DynamicSet<RefOperationValidationListener> refOperationValidationListeners;
@Inject
RefOperationValidators(
DynamicSet<RefOperationValidationListener> refOperationValidationListeners,
@Assisted Project project, @Assisted IdentifiedUser user,
@Assisted ReceiveCommand cmd) {
this.refOperationValidationListeners = refOperationValidationListeners;
event = new RefReceivedEvent();
event.command = cmd;
event.project = project;
event.user = user;
}
public List<ValidationMessage> validateForRefOperation()
throws RefOperationValidationException {
List<ValidationMessage> messages = new ArrayList<>();
boolean withException = false;
try {
for (RefOperationValidationListener listener : refOperationValidationListeners) {
messages.addAll(listener.onRefOperation(event));
}
} catch (ValidationException e) {
messages.add(new ValidationMessage(e.getMessage(), true));
withException = true;
}
if (withException) {
throwException(messages, event);
}
return messages;
}
private void throwException(Iterable<ValidationMessage> messages,
RefReceivedEvent event) throws RefOperationValidationException {
Iterable<ValidationMessage> errors = Iterables.filter(messages, GET_ERRORS);
String header = String.format(
"Ref \"%s\" %S in project %s validation failed", event.command.getRefName(),
event.command.getType(), event.project.getName());
LOG.error(header);
throw new RefOperationValidationException(header, errors);
}
private static class GetErrorMessages implements Predicate<ValidationMessage> {
@Override
public boolean apply(ValidationMessage input) {
return input.isError();
}
}
}
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