org.graylog.plugins.pipelineprocessor.db.memory.InMemoryPipelineStreamConnectionsService 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.graylog.plugins.pipelineprocessor.db.memory;
import com.google.common.collect.ImmutableSet;
import org.graylog.plugins.pipelineprocessor.db.PipelineStreamConnectionsService;
import org.graylog.plugins.pipelineprocessor.events.PipelineConnectionsChangedEvent;
import org.graylog.plugins.pipelineprocessor.rest.PipelineConnections;
import org.graylog2.database.NotFoundException;
import org.graylog2.events.ClusterEventBus;
import javax.inject.Inject;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
import java.util.stream.Collectors;
public class InMemoryPipelineStreamConnectionsService implements PipelineStreamConnectionsService {
// poor man's id generator
private final AtomicLong idGen = new AtomicLong(0);
private final Map store = new ConcurrentHashMap<>();
private final ClusterEventBus clusterBus;
@Inject
public InMemoryPipelineStreamConnectionsService(ClusterEventBus clusterBus) {
this.clusterBus = clusterBus;
}
@Override
public PipelineConnections save(PipelineConnections connections) {
PipelineConnections toSave = connections.id() != null
? connections
: connections.toBuilder().id(createId()).build();
store.put(toSave.id(), toSave);
clusterBus.post(PipelineConnectionsChangedEvent.create(toSave.streamId(), toSave.pipelineIds()));
return toSave;
}
@Override
public PipelineConnections load(String streamId) throws NotFoundException {
final PipelineConnections connections = store.get(streamId);
if (connections == null) {
throw new NotFoundException("No such pipeline connections for stream " + streamId);
}
return connections;
}
@Override
public Set loadAll() {
return ImmutableSet.copyOf(store.values());
}
@Override
public Set loadByPipelineId(String pipelineId) {
return store.values().stream()
.filter(connection -> connection.pipelineIds().contains(pipelineId))
.collect(Collectors.toSet());
}
@Override
public void delete(String streamId) {
try {
final PipelineConnections connections = load(streamId);
final Set pipelineIds = connections.pipelineIds();
store.remove(connections.id());
clusterBus.post(PipelineConnectionsChangedEvent.create(streamId, pipelineIds));
} catch (NotFoundException e) {
// Do nothing
}
}
private String createId() {
return String.valueOf(idGen.incrementAndGet());
}
}