/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.brooklyn.core.mgmt.rebind;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.brooklyn.api.mgmt.rebind.PersistenceExceptionHandler;
import org.apache.brooklyn.api.mgmt.rebind.mementos.Memento;
import org.apache.brooklyn.api.objs.BrooklynObject;
import org.apache.brooklyn.api.objs.BrooklynObjectType;
import org.apache.brooklyn.util.exceptions.Exceptions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.Sets;
public class PersistenceExceptionHandlerImpl implements PersistenceExceptionHandler {
private static final Logger LOG = LoggerFactory.getLogger(PersistenceExceptionHandlerImpl.class);
private final AtomicBoolean active = new AtomicBoolean(true);
private final Set<String> prevFailedMementoGenerators = Sets.newConcurrentHashSet();
private final Set<String> prevFailedPersisters = Sets.newConcurrentHashSet();
public static Builder builder() {
return new Builder();
}
// Builder is here to copy pattern in RebindExceptionHandler, and to make it easier to edit API in the future
public static class Builder {
public PersistenceExceptionHandler build() {
return new PersistenceExceptionHandlerImpl(this);
}
}
public PersistenceExceptionHandlerImpl(Builder builder) {
}
@Override
public void stop() {
active.set(false);
}
@Override
public void onGenerateMementoFailed(BrooklynObjectType type, BrooklynObject instance, Exception e) {
String errmsg = "generate memento for "+type+" "+instance.getClass().getName()+"("+instance.getId()+")";
onErrorImpl(errmsg, e, prevFailedMementoGenerators.add(instance.getId()));
}
@Override
public void onPersistMementoFailed(Memento memento, Exception e) {
String errmsg = "persist for "+memento.getClass().getSimpleName()+" "+memento.getType()+"("+memento.getId()+")";
onErrorImpl(errmsg, e, prevFailedPersisters.add(memento.getId()));
}
@Override
public void onPersistRawMementoFailed(BrooklynObjectType type, String id, Exception e) {
String errmsg = "persist for "+type+" "+"("+id+")";
onErrorImpl(errmsg, e, prevFailedPersisters.add(id));
}
@Override
public void onDeleteMementoFailed(String id, Exception e) {
String errmsg = "delete for memento "+id;
onErrorImpl(errmsg, e, prevFailedPersisters.add(id));
}
protected void onErrorImpl(String errmsg, Exception e, boolean isNew) {
// TODO the default behaviour is simply to warn; we should have a "fail_at_end" behaviour,
// and a way for other subsystems to tune in to such failures
Exceptions.propagateIfFatal(e);
if (isActive()) {
if (!isNew) {
if (LOG.isDebugEnabled()) LOG.debug("Repeating problem: "+errmsg, e);
} else {
LOG.warn("Problem persisting (ignoring): "+errmsg, e);
}
} else {
if (!isNew) {
if (LOG.isTraceEnabled()) LOG.trace("Repeating problem: "+errmsg+"; but no longer active (ignoring)", e);
} else {
if (LOG.isDebugEnabled()) LOG.debug("Problem: "+errmsg+"; but no longer active (ignoring)", e);
}
}
}
protected boolean isActive() {
return active.get();
}
}