/**
* This file is part of Graylog2.
*
* Graylog2 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.
*
* Graylog2 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 Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.radio.rest.resources.system;
import com.codahale.metrics.annotation.Timed;
import com.google.common.collect.Maps;
import org.graylog2.inputs.InputCache;
import org.graylog2.plugin.buffers.BufferWatermark;
import org.graylog2.radio.Configuration;
import org.graylog2.radio.rest.resources.RestResource;
import org.graylog2.shared.buffers.ProcessBufferWatermark;
import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import java.util.Map;
/**
* @author Lennart Koopmann <lennart@torch.sh>
*/
@Path("/system/buffers")
public class BuffersResource extends RestResource {
@Inject
private Configuration configuration;
@Inject
private ProcessBufferWatermark processBufferWatermark;
@Inject
private InputCache inputCache;
@GET @Timed
@Produces(MediaType.APPLICATION_JSON)
public String utilization() {
Map<String, Object> result = Maps.newHashMap();
result.put("buffers", buffers());
result.put("master_caches", masterCaches());
return json(result);
}
private Map<String, Object> masterCaches() {
Map<String, Object> caches = Maps.newHashMap();
Map<String, Object> input = Maps.newHashMap();
input.put("size", inputCache.size());
caches.put("input", input);
return caches;
}
private Map<String, Object> buffers() {
Map<String, Object> buffers = Maps.newHashMap();
Map<String, Object> input = Maps.newHashMap();
BufferWatermark pWm = new BufferWatermark(
configuration.getRingSize(),
processBufferWatermark
);
input.put("utilization_percent", pWm.getUtilizationPercentage());
input.put("utilization", pWm.getUtilization());
buffers.put("input", input);
return buffers;
}
}