/**
* 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.dashboards.widgets;
import com.codahale.metrics.MetricRegistry;
import com.google.common.collect.ImmutableMap;
import org.graylog2.indexer.IndexHelper;
import org.graylog2.indexer.results.HistogramResult;
import org.graylog2.indexer.searches.Searches;
import org.graylog2.indexer.searches.timeranges.TimeRange;
import javax.annotation.Nullable;
import java.util.Map;
import static com.google.common.base.Strings.isNullOrEmpty;
public class SearchResultChartWidget extends DashboardWidget {
private final String query;
private final TimeRange timeRange;
private final Searches.DateHistogramInterval interval;
@Nullable
private final String streamId;
private final Searches searches;
public SearchResultChartWidget(MetricRegistry metricRegistry, Searches searches, String id, String description, int cacheTime, Map<String, Object> config, String query, TimeRange timeRange, String creatorUserId) {
super(metricRegistry, Type.SEARCH_RESULT_CHART, id, description, cacheTime, config, creatorUserId);
this.searches = searches;
this.query = getNonEmptyQuery(query);
this.timeRange = timeRange;
this.streamId = (String) config.get("stream_id");
if (config.containsKey("interval")) {
this.interval = Searches.DateHistogramInterval.valueOf(((String) config.get("interval")).toUpperCase());
} else {
this.interval = Searches.DateHistogramInterval.MINUTE;
}
}
// We need to ensure query is not empty, or the histogram calculation will fail
private String getNonEmptyQuery(String query) {
if (isNullOrEmpty(query)) {
return "*";
}
return query;
}
public String getQuery() {
return query;
}
public TimeRange getTimeRange() {
return timeRange;
}
@Override
public Map<String, Object> getPersistedConfig() {
final ImmutableMap.Builder<String, Object> persistedConfig = ImmutableMap.<String, Object>builder()
.put("query", query)
.put("interval", interval.toString().toLowerCase())
.put("timerange", timeRange.getPersistedConfig());
if (!isNullOrEmpty(streamId)) {
persistedConfig.put("stream_id", streamId);
}
return persistedConfig.build();
}
@Override
protected ComputationResult compute() {
String filter = null;
if (!isNullOrEmpty(streamId)) {
filter = "streams:" + streamId;
}
try {
HistogramResult histogram = searches.histogram(query, interval, filter, timeRange);
return new ComputationResult(histogram.getResults(), histogram.took().millis(), histogram.getHistogramBoundaries());
} catch (IndexHelper.InvalidRangeFormatException e) {
throw new RuntimeException("Invalid timerange format.", e);
}
}
}