org.graylog2.inputs.PersistedInputsImpl Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.inputs;
import com.google.common.collect.Lists;
import org.graylog2.database.NotFoundException;
import org.graylog2.plugin.ServerStatus;
import org.graylog2.plugin.database.ValidationException;
import org.graylog2.plugin.inputs.Extractor;
import org.graylog2.plugin.inputs.MessageInput;
import org.graylog2.shared.inputs.NoSuchInputTypeException;
import org.graylog2.shared.inputs.PersistedInputs;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import static com.google.common.base.Strings.isNullOrEmpty;
public class PersistedInputsImpl implements PersistedInputs {
private static final Logger LOG = LoggerFactory.getLogger(PersistedInputsImpl.class);
private final InputService inputService;
private final ServerStatus serverStatus;
@Inject
public PersistedInputsImpl(InputService inputService, ServerStatus serverStatus) {
this.inputService = inputService;
this.serverStatus = serverStatus;
}
@Override
public Iterator iterator() {
List result = Lists.newArrayList();
for (Input io : inputService.allOfThisNode(serverStatus.getNodeId().toString())) {
try {
final MessageInput input = inputService.getMessageInput(io);
result.add(input);
} catch (NoSuchInputTypeException e) {
LOG.warn("Cannot instantiate persisted input. No such type [{}].", io.getType());
} catch (Throwable e) {
LOG.warn("Cannot instantiate persisted input. Exception caught: ", e);
}
}
return result.iterator();
}
@Override
public MessageInput get(String id) {
try {
return inputService.getMessageInput(inputService.find(id));
} catch (NoSuchInputTypeException e) {
LOG.warn("Cannot instantiate persisted input: ", e);
} catch (NotFoundException e) {
LOG.warn("Cannot find persisted Input with id {}", id);
}
return null;
}
@Override
public boolean add(MessageInput input) {
try {
final Input mongoInput = getInput(input);
// Persist input.
String id = inputService.save(mongoInput);
input.setPersistId(id);
return true;
} catch (ValidationException e) {
return false;
}
}
@Override
public boolean remove(Object o) {
if (o instanceof MessageInput) {
final MessageInput messageInput = (MessageInput) o;
if (isNullOrEmpty(messageInput.getId()))
return false;
try {
final Input input = inputService.find(messageInput.getId());
inputService.destroy(input);
return true;
} catch (NotFoundException e) {
return false;
}
}
return false;
}
@Override
public boolean update(String id, MessageInput newInput) {
try {
final Input oldInput = inputService.find(id);
newInput.setPersistId(id);
final Input mongoInput = getInput(newInput);
final List extractors = inputService.getExtractors(oldInput);
final Map staticFields = oldInput.getStaticFields();
inputService.save(mongoInput);
for (Map.Entry entry : staticFields.entrySet())
inputService.addStaticField(mongoInput, entry.getKey(), entry.getValue());
for (Extractor extractor : extractors)
inputService.addExtractor(mongoInput, extractor);
return true;
} catch (NotFoundException | ValidationException e) {
return false;
}
}
private Input getInput(MessageInput input) throws ValidationException {
// Build MongoDB data
final Map inputData = input.asMap();
// ... and check if it would pass validation. We don't need to go on if it doesn't.
final Input mongoInput;
if (input.getId() != null)
mongoInput = inputService.create(input.getId(), inputData);
else
mongoInput = inputService.create(inputData);
return mongoInput;
}
}