/**
* Yobi, Project Hosting SW
*
* Copyright 2014 NAVER Corp.
* http://yobi.io
*
* @Author Yi EungJun
*
* 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 utils;
import org.apache.commons.lang3.exception.ExceptionUtils;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
abstract public class Diagnostic {
private final static List<Diagnostic> diagnostics = new CopyOnWriteArrayList<>();
/**
* Register a diagnostic.
*
* Registered diagnostics are run when someone open Site Management >
* Diagnostics page.
*
* @param diagnostic
*/
public static void register(@Nonnull Diagnostic diagnostic) {
diagnostics.add(diagnostic);
}
@Nonnull
public static List<String> checkAll() {
List<String> errors = new ArrayList<>();
for (Diagnostic diagnostic : diagnostics) {
try {
errors.addAll(diagnostic.check());
} catch (Exception e) {
errors.add("Failed to diagnose: "
+ ExceptionUtils.getStackTrace(e));
}
}
return errors;
}
@Nonnull
abstract public List<String> check();
}