org.graylog2.dashboards.widgets.strategies.SearchResultChartWidgetStrategy 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.dashboards.widgets.strategies;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import org.graylog2.indexer.results.HistogramResult;
import org.graylog2.indexer.searches.Searches;
import org.graylog2.plugin.dashboards.widgets.ComputationResult;
import org.graylog2.plugin.dashboards.widgets.WidgetStrategy;
import org.graylog2.plugin.indexer.searches.timeranges.TimeRange;
import java.util.Map;
import static com.google.common.base.Strings.isNullOrEmpty;
public class SearchResultChartWidgetStrategy extends ChartWidgetStrategy {
public interface Factory extends WidgetStrategy.Factory {
@Override
SearchResultChartWidgetStrategy create(Map config, TimeRange timeRange, String widgetId);
}
private final String query;
private final Searches searches;
private final TimeRange timeRange;
@AssistedInject
public SearchResultChartWidgetStrategy(Searches searches, @Assisted Map config, @Assisted TimeRange timeRange, @Assisted String widgetId) { super(config);
this.searches = searches;
this.timeRange = timeRange;
this.query = getNonEmptyQuery((String)config.get("query"));
}
// 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;
}
@Override
public ComputationResult compute() {
String filter = null;
if (!isNullOrEmpty(streamId)) {
filter = "streams:" + streamId;
}
final HistogramResult histogram = searches.histogram(query, interval, filter, this.timeRange);
return new ComputationResult(histogram.getResults(), histogram.tookMs(), histogram.getHistogramBoundaries());
}
}